CN102647791B - Method and device for sending and receiving downlink control message - Google Patents
Method and device for sending and receiving downlink control message Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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Abstract
The embodiment of the invention discloses a method and a device for sending and receiving a downlink control message and relates to the technical field of communication, and the method and the device are used for expanding the downlink control channel capacity. The method for sending the downlink control information in the embodiment of the invention comprises the following steps of: mapping a vacant time slot in a physical channel, in which an expansion public control channel is positioned, on a cell main carrier frequency as a downlink control channel; and transmitting the downlink control information through the downlink control channel. The scheme provided by the embodiment of the invention is suitable for carrying out expansion on the downlink control channel on the cell main carrier frequency.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for sending and receiving a downlink control message.
Background
Logical channels can be divided into traffic channels and control channels. The Control channels include a Broadcast Channel (BCH), a Common Control Channel (CCCH), and a Dedicated Control Channel (DCCH). Further, the Broadcast Channel includes a Broadcast Control Channel (BCCH), a Frequency Correction Channel (FCCH), and a Synchronization Channel (SCH); the common control Channel includes a Random Access Channel (RACH), a Paging Channel (PCH), an Access response Channel (AGCH), and a Cell Broadcast Channel (CBCH), where only the RACH is a unidirectional uplink Channel and the rest are unidirectional downlink channels.
In the GSM system, each cell has several carrier frequencies, each carrier frequency having 8 time slots (TS 0-TS 7). A number of carrier frequencies in a cell are denoted as C0, C1, and C0, respectively, where C0 is the carrier frequency where the BCCH channel is located. Generally, TS0 on carrier C0 is used to map broadcast and common control channels, as shown in fig. 1. When the traffic of a certain cell is high, the system configures TS0 of carrier C0 as the main BCCH channel, and extends three sets of combinations using CCCH channel configuration on TS2, TS4, and TS6 of carrier C0, as shown in fig. 2.
In the process of implementing the above communication channel configuration, the inventor finds that at least the following problems exist in the prior art:
in existing GSM networks, downlink Common Control Channel (CCCH) resources are limited. In general, only one CCCH channel is allocated to TS0 of carrier C0; at most, there are only four CCCH channels TS0, TS2, TS4, and TS6 for carrier C0. Because a PCH channel and an AGCH channel exist in a downlink CCCH channel at the same time, and only a RACH channel exists in a corresponding uplink channel; in some cases, for example, when a large number of M2M terminals send random access request messages through the RACH channel, a problem occurs in that downlink common control channel resources are insufficient, which may cause access failure.
Disclosure of Invention
The embodiment of the invention provides a method and a device for sending and receiving a downlink control message, which are used for expanding the capacity of a downlink control channel.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
a method for sending a downlink control message comprises the following steps:
mapping an idle time slot in a physical channel where an extended common control channel on a cell main carrier frequency is positioned into a downlink control channel;
and sending a downlink control message through the downlink control channel.
A method for receiving downlink control messages comprises the following steps:
receiving a system message or a paging message, wherein the system message or the paging message comprises an indication for monitoring a newly added downlink control channel; the newly added downlink control channel is obtained by mapping idle time slots in a physical channel in which an extended common control channel on the cell main carrier frequency is located;
and receiving a downlink control message through the newly added downlink control channel.
A network device, comprising:
a mapping unit, configured to map an idle timeslot in a physical channel where an extended common control channel on a cell main carrier frequency is located as a downlink control channel;
and the sending unit is used for sending the downlink control message through the downlink control channel.
A terminal, comprising:
a first receiving unit, configured to receive a system message or a paging message, where the system message or the paging message includes an indication for monitoring a newly added downlink control channel; the newly added downlink control channel is obtained by mapping idle time slots in a physical channel in which an extended common control channel on the cell main carrier frequency is located;
and the second receiving unit is used for receiving the downlink control message through the newly added downlink control channel.
According to the method and the device for sending and receiving the downlink control message, provided by the embodiment of the invention, the idle time slot in the extended common control channel CCCH on the cell main carrier frequency is mapped into the downlink control channel, so that the idle time slot in the existing extended CCCH can be fully utilized, and the utilization rate of channel resources is improved; meanwhile, the problem of lack of a downlink common control channel can be relieved by utilizing the idle time slot in the extended CCCH to send downlink control messages, and the phenomenon of terminal access failure is reduced. Therefore, the scheme in the embodiment of the invention can realize the expansion of the capacity of the downlink control channel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a diagram illustrating a mapping relationship of a main BCCH channel on a cell carrier frequency C0 in the prior art;
fig. 2 is a diagram illustrating a mapping relationship of an extended CCCH channel on cell carrier frequency C0 in the prior art;
fig. 3 is a flowchart of a method for sending a downlink control message according to a first embodiment of the present invention;
fig. 4 is a flowchart of a method for receiving a downlink control message according to a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a network device according to a first embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to a first embodiment of the present invention;
fig. 7 is a schematic structural diagram of a communication system according to a first embodiment of the present invention;
fig. 8 is a flowchart of a method for transmitting and receiving a downlink control message in the second embodiment of the present invention;
fig. 9 is a schematic diagram of a first downlink control channel mapping manner according to a second embodiment of the present invention;
fig. 10 is a diagram illustrating a second downlink control channel mapping method according to a second embodiment of the present invention;
fig. 11 is a schematic diagram of a third downlink control channel mapping manner in the second embodiment of the present invention;
fig. 12 is a schematic diagram of a downlink control channel mapping manner four in the second embodiment of the present invention;
fig. 13 is a schematic diagram of a fifth downlink control channel mapping manner in the second embodiment of the present invention;
fig. 14 is a flowchart of a method for transmitting and receiving a downlink control message in a third embodiment of the present invention;
fig. 15 is a schematic structural diagram of a network device according to a fourth embodiment of the present invention;
fig. 16 is a schematic structural diagram of a terminal in the fourth embodiment of the present invention.
Detailed Description
In a communication system, a 51-multiframe is generally used as a cycle period to carry logical channels such as a broadcast channel BCH and a common control channel CCCH. See fig. 1 and 2 for a mapping of different channels on cell carrier frequency C0 over 51 multiframes. The mapping structure of the BCCH channel and the PCH channel (PCH channel is taken as an example in the figure) in the extended CCCH channel in fig. 2 is the same as the mapping structure of the BCCH channel and the PCH channel (PCH channel is taken as an example in the figure) in the main BCCH channel in fig. 1. The PCH channel and the AGCH channel may share the same physical channel resource. The mobile terminal needs to monitor the paging messages belonging to its paging group in the idle state. When the mobile terminal initiates an access process, firstly, a random access request message is sent to a network side, then all downlink common control channels of a time slot in which a paging group to which the mobile terminal belongs are monitored, and the network side issues an AGCH message in a downlink CCCH.
The frequency correction channel FCCH and the synchronization channel SCH can only appear in the physical channel of the primary BCCH channel on carrier frequency C0, i.e. slot 0; the FCCH channel and the SCH channel do not appear in the physical channel where the extended common control channel CCCH is located, and then the frames corresponding to the FCCH channel and the SCH channel in the physical channel where the primary BCCH channel is located are idle. As shown in fig. 2, the idle frames do not correspond to any logical channel, that is, the idle timeslots corresponding to the idle frames do not need to carry any information during the communication process. In the 51-multiframe structure, the idle timeslot in the foregoing may be a timeslot corresponding to a part of or all of idle frames with frame numbers 0, 1, 10, 11, 20, 21, 30, 31, 40, 41, and 50 in a physical channel in which an extended common control channel is located, and one idle timeslot described in the embodiment of the present invention is a burst (burst).
In the solution provided in the embodiment of the present invention, idle frames in the extended CCCH channel on the cell carrier frequency C0 are fully utilized, and downlink control messages are issued through time slots corresponding to the idle frames. Therefore, the utilization rate of the downlink channel is improved, and the problem of access failure when a plurality of terminals simultaneously initiate access requests due to lack of the downlink common control channel can be solved.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 3, a method for sending a downlink control message on a network side provided in the embodiment of the present invention includes:
301. and mapping the idle time slot in the physical channel where the extended common control channel on the cell main carrier frequency is positioned into a downlink control channel.
302. And sending a downlink control message through the downlink control channel.
In this embodiment, after the idle timeslot is mapped to a downlink control channel, the downlink control channel may be used to transmit one or more messages of downlink common control messages such as a paging message, an access response message, and a cell broadcast message.
The executing body of the above steps may be a base station, or other network devices.
Corresponding to the method for sending the downlink control message on the network equipment side, the embodiment of the invention also provides a method for receiving the downlink control message on the basis of the terminal side.
As shown in fig. 4, a method for receiving a downlink control message at a terminal side includes:
401. receiving a system message or a paging message, wherein the system message or the paging message comprises an indication for monitoring a newly added downlink control channel; the newly added downlink control channel is obtained by mapping idle time slots in a physical channel in which an extended common control channel on the cell main carrier frequency is located.
402. And receiving a downlink control message through the newly added downlink control channel.
Of course, the terminal may also report the capability of whether the terminal supports the newly added downlink control channel to the network side, and the network side determines whether to issue the downlink control message through the newly added downlink control channel according to the capabilities of different terminals.
The extended common control channel CCCH described in the above embodiment is a common control channel located in time slot 2, and/or time slot 4, and/or time slot 6 on the cell primary carrier frequency, and since the FCCH channel and the SCH channel are only set in the physical channel where the primary BCCH channel of the cell carrier frequency C0 is located, an idle time slot corresponding to the extended common control channel CCCH occurs in the physical channel where the extended common control channel CCCH is located. Correspondingly, the idle time slot in the physical channel where the extended common control channel CCCH is located may be an idle time slot in time slot 2 or time slot 4 or time slot 6 in cell carrier frequency C0, that is, a frame corresponding to the frequency correction channel and the synchronization channel in time slot 0 on the cell main carrier frequency in the physical channel where the extended common control channel is located, and a time slot corresponding to part or all of other idle frames. In the 51-multiframe structure, the empty time slots may be time slots corresponding to all or part of the frames in the last frame in the 51-multiframe structure, and the frequency correction channel FCCH and the synchronization channel SCH in the physical channel in which the primary BCCH channel is located, in the channel mapping structure.
The downlink control channel may be a paging channel PCH, an access response channel AGCH, or a cell broadcast channel CBCH.
When idle time slots in a physical channel where an extended common control channel CCCH on a cell primary carrier frequency C0 is located are mapped as a downlink control channel, 4 idle time slots, or 2 idle time slots, or 1 idle time slot may be formed into one radio block to carry a downlink control message. The above mapping scheme is preferably applied in 51 multiframes in the embodiment of the present invention. In particular, the amount of the solvent to be used,
mapping the corresponding time slots of four idle frames in a 51-multiframe into a wireless block, wherein the four idle frames comprise two groups of idle frames, and each group of idle frames comprises two continuous idle frames; two groups of idle frames can be separated by two wireless blocks or 8 non-idle frames; of course, the two groups of idle frames may also be any two groups of idle frames in one 51-multiframe, and further, the four idle frames may also be any four idle frames in one 51-multiframe.
And/or mapping the idle frames with the frame numbers of 40 and 41 in the 51 multiframes and the corresponding time slots of the first two idle frames in the next 51 multiframes adjacent to the 51 multiframes into a wireless block;
and/or mapping the corresponding time slot combination of the last frame in the 51 multiframes and the last frame in the other three 51 multiframes continuous with the 51 multiframes into a wireless block;
or,
mapping corresponding time slots of two continuous idle frames in a 51-multiframe into a wireless block; and/or the presence of a gas in the gas,
mapping a combination of time slots of a last frame of the 51-multiframes and a last frame of a next 51-multiframe continuous with the 51-multiframe into a radio block;
or,
the corresponding time slot of any idle frame in a 51-multiframe is mapped to a radio block.
In addition, the network side device may also send an indication for monitoring the new newly added downlink control channel to the terminal, and further may include indication information of a mapping manner of the newly added downlink control channel. Of course, the network side device may also determine whether to issue the downlink control message through the newly added downlink control channel according to the capability information reported by the terminal.
Corresponding to the sending and receiving methods of the downlink control message, the embodiment of the present invention further provides a network device 50 and a terminal 60, which can be used for implementing the methods.
As shown in fig. 5, the network device 50 includes:
a mapping unit 51, configured to map an idle timeslot in a physical channel where an extended common control channel on a cell main carrier frequency is located as a downlink control channel; the newly added downlink control channel is obtained by mapping idle time slots in a physical channel in which an extended common control channel on the cell main carrier frequency is located;
a sending unit 52, configured to send a downlink control message through the downlink control channel.
As shown in fig. 6, the terminal 60 includes:
a first receiving unit 61, configured to receive a system message or a paging message, where the system message or the paging message includes an indication for monitoring a newly added downlink control channel; the newly added downlink control channel is obtained by mapping idle time slots in a physical channel in which an extended common control channel on the cell main carrier frequency is located.
A second receiving unit 62, configured to receive the downlink control message through the newly added downlink control channel.
The sending and receiving method of the downlink control message, the network equipment and the terminal can be applied to a communication system to form the communication system capable of realizing the capacity expansion of the downlink control channel. Specifically, as shown in fig. 7, the communication system includes the above-described network device 50 and terminal 60; wherein,
network equipment 50, configured to map an idle timeslot in a physical channel where an extended common control channel on a cell main carrier frequency is located as a downlink control channel, and send a downlink control message through the downlink control channel;
the terminal 60 is a terminal capable of supporting the downlink control channel, and is configured to monitor the downlink control channel and receive the downlink control message.
According to the method, the device and the system for sending and receiving the downlink control message, provided by the embodiment of the invention, the idle time slot in the physical channel where the extended common control channel CCCH on the cell main carrier frequency is located is mapped into the downlink control channel, so that the idle time slot in the physical channel where the existing extended common control channel CCCH is located can be fully utilized, the utilization rate of channel resources is improved, and the capacity expansion of the downlink control channel is realized; meanwhile, the problem of lack of the downlink common control channel can be relieved by sending the downlink control message by using the idle time slot in the physical channel where the extended common control channel CCCH is located, and the phenomenon of terminal access failure is reduced.
Example two:
in this embodiment, taking the network device as a base station as an example, the method for sending and receiving the downlink control message in the embodiment of the present invention will be further described. Of course, the network device may also be a base station controller, or a combination of a base station and a Base Station Controller (BSC).
As shown in fig. 8, the method for sending and receiving a downlink control message provided in the embodiment of the present invention specifically includes the following steps:
801. the base station maps the idle time slot in the physical channel where the extended common control channel CCCH on the cell main carrier frequency C0 is located into a downlink control channel.
In this embodiment, the scheme in the present invention is described by taking the example of mapping the idle timeslot to an access response channel AGCH. The downlink control channel may of course also be a paging channel PCH or a cell broadcast channel CBCH.
Specifically, the implementation manner of mapping the idle time slots in the physical channel where the extended common control channel CCCH on carrier frequency C0 is located to the AGCH channel may be that 4 idle time slots, or 2 idle time slots, or 1 idle time slot are combined into one radio block in the physical channel where the same extended common control channel CCCH on carrier frequency C0 is located; the radio block is used for carrying downlink control messages.
The specific implementation of the above channel mapping can have various implementations.
Specifically, the cell main carrier frequency C0 adopts 51 multiframes; in the physical channel where the same extended common control channel CCCH on the cell primary carrier frequency C0 is located, 4 idle timeslots are combined into one radio block, which may be:
mapping corresponding time slots of four idle frames in a 51 multiframe into a wireless block in a physical channel where the same extended common control channel on the cell main carrier frequency is located, wherein the four idle frames comprise two groups of idle frames, and each group of idle frame comprises two continuous idle frames;
and/or mapping corresponding time slots of the last group of idle frames in the 51 multiframes and the first group of idle frames in another 51 multiframes adjacent to the 51 multiframes into a wireless block;
and/or mapping the corresponding time slot combination of the frame with the frame number of 50 (namely the last frame) in the 51-multiframes and the frame with the frame number of 50 in the other three 51-multiframes continuous to the 51-multiframes into a wireless block.
The four idle frames in the same 51 multiframe may be frames with frame numbers of 0, 1, 10, and 11 in one 51 multiframe and/or frames with frame numbers of 20, 21, 30, and 31 in the 51 multiframe; or, the four idle frames in the same 51 multiframe are frames with frame numbers of 10, 11, 20, and 21 in one 51 multiframe and/or frames with frame numbers of 30, 31, 40, and 41 in the 51 multiframe.
In a first mode
As shown in fig. 9, a cell primary carrier frequency C0 uses 51 multiframes to carry logical channels such as BCH and CCCH;
in TS2/TS4/TS6 of carrier frequency C0, the corresponding time slot of the frame with frame numbers 0, 1, 10, 11 in each 51-multiframe is mapped to a radio block0, and the corresponding time slot of the frame with frame numbers 20, 21, 30, 31 in the 51-multiframe is mapped to a radio block 1.
The newly composed radio block may be used as a downlink control channel, such as a downlink common control channel like an AGCH channel. With this implementation, 2 AGCH resource blocks can be added in each 51 multiframe.
Mode two
As shown in fig. 10, a cell primary carrier frequency C0 uses 51 multiframes to carry logical channels such as BCH and CCCH;
in TS2/TS4/TS6 of carrier frequency C0, two 51 multiframes are grouped, corresponding time slots of frames with frame numbers of 0, 1, 10 and 11 in the first 51 multiframe are mapped into a radio block0, corresponding time slots of frames with frame numbers of 20, 21, 30 and 31 are mapped into a radio block1, corresponding time slots of frames with frame numbers of 10, 11, 20 and 21 in the second 51 multiframe are mapped into a radio block3, corresponding time slots of frames with frame numbers of 30, 31, 40 and 41 are mapped into a radio block4, and corresponding time slots of frames with frame numbers of 40 and 41 in the first 51 multiframe and frames with frame numbers of 0 and 1 in the second 51 multiframe are mapped into a radio block 2.
Specifically, the first 51 multiframe and the second 51 multiframe may be an odd number 51 multiframe and a backward adjacent even number 51 multiframe in the current channel, or an even number 51 multiframe and a backward adjacent odd number 51 multiframe in the current channel.
Taking the first 51 multiframe and the second 51 multiframe as the odd number of the current channel and the backward adjacent even number of the 51 multiframe as an example:
when performing channel mapping, it may be calculated that each frame belongs to the 51 th multiframe, and then whether the 51 th multiframe is the odd 51 th multiframe or the even 51 th multiframe. Using T value to indicate whether the 51-multiframe to which a certain Frame belongs is an odd Number or an even Number, and then T ═ FN DIV 51 mod 2, wherein FN is the radio Frame Number (Frame Number) of the Frame;
then, mapping the corresponding time slots of the frames with frame numbers of 0, 1, 10 and 11 in the odd 51-complex frames to a wireless block0, mapping the corresponding time slots of the frames with frame numbers of 20, 21, 30 and 31 to a wireless block1, mapping the corresponding time slots of the frames with frame numbers of 10, 11, 20 and 21 in the even 51-complex frames to a wireless block3, mapping the corresponding time slots of the frames with frame numbers of 30, 31, 40 and 41 to a wireless block4, and mapping the corresponding time slots of the frames with frame numbers of 40 and 41 in the odd 51-complex frames and the frames with frame numbers of 0 and 1 in the subsequent even 51-complex frames to a wireless block 2.
If the even numbered 51 multiframes in the current channel and the odd numbered 51 multiframes adjacent to the current channel backward are used as the first 51 multiframes and the second 51 multiframes, the channel allocation situation is similar to the above situation, and the description is omitted here.
The newly composed radio block may be used as a downlink control channel, such as a downlink common control channel like an AGCH channel. With this implementation 5 AGCH resource blocks can be added in every two 51 multiframes.
Mode III
As shown in fig. 11, a further improvement can be made on the basis of the second implementation, so that the last frame (frame number 50) in each 51-multiframe is also utilized.
Adopting 51 multiframes to carry logic channels such as BCH, CCCH and the like on a cell main carrier frequency C0; specifically, in TS2/TS4/TS6 of carrier frequency C0, adjacent four 51 multiframes are grouped;
mapping corresponding time slots of frames with frame numbers of 0, 1, 10 and 11 in a first 51-multiframe to be a wireless block0, mapping corresponding time slots of frames with frame numbers of 20, 21, 30 and 31 to be a wireless block1, mapping corresponding time slots of frames with frame numbers of 10, 11, 20 and 21 in a second 51-multiframe to be a wireless block3, mapping corresponding time slots of frames with frame numbers of 30, 31, 40 and 41 to be a wireless block4, and mapping corresponding time slots of frames with frame numbers of 40 and 41 in the first 51-multiframe and frames with frame numbers of 0 and 1 in the second 51-multiframe to be a wireless block 2;
similarly, mapping the corresponding time slots of the frames with frame numbers 0, 1, 10, 11 in the third 51-multiframe as a radio block0, mapping the corresponding time slots of the frames with frame numbers 20, 21, 30, 31 as a radio block1, mapping the corresponding time slots of the frames with frame numbers 10, 11, 20, 21 in the fourth 51-multiframe as a radio block3, mapping the corresponding time slots of the frames with frame numbers 30, 31, 40, 41 as a radio block4, and mapping the corresponding time slots of the frames with frame numbers 40, 41 in the third 51-multiframe and the frames with frame numbers 0, 1 in the fourth 51-multiframe as a radio block 2;
and mapping a corresponding time slot combination of a frame with a frame number of 50 in the first, second, third and fourth 51-multiframes to a radio block 5.
The newly composed radio block may be used as a downlink control channel, such as a downlink common control channel like an AGCH channel. With this implementation, 11 AGCH resource blocks can be added in every four 51-multiframes.
In the first, second and third modes, when 4 idle frames are taken from the same 51-multiframe, the adjacent 4 idle frames are taken, namely, the selected 4 idle frames comprise two groups of idle frames, each group of idle frames comprises two continuous idle frames, and two wireless blocks or 8 non-idle frames are arranged between the two groups of idle frames; however, the scope of the present invention is not limited thereto, and of course, any two sets of idle frames may be taken, for example, 4 idle frames with frame numbers 0, 1, 20, and 21, or 4 idle frames randomly extracted from 51 multiple idle frames for mapping into one radio block, for example, 4 idle frames with frame numbers 0, 11, 30, and 50.
As long as the network side device, such as the base station, notifies the terminal of the specific mapping manner after completing the channel mapping, the normal communication between the network side and the terminal will not be affected.
In addition, the above-mentioned forming 2 idle timeslots in the physical channel where the same extended common control channel CCCH on the cell primary carrier frequency C0 is located into one radio block may be:
mapping corresponding time slots of two continuous idle frames in a 51 multiframe into a wireless block in a physical channel where the same extended common control channel on the cell main carrier frequency is located; and/or the presence of a gas in the gas,
and mapping the corresponding time slot combination of the frame with the frame number of 50 (namely the last frame) in the 51-multiframe and the frame with the frame number of 50 in another 51-multiframe continuous to the 51-multiframe into a wireless block.
In order to visually describe the above channel mapping implementation for mapping 2 idle timeslots into one radio block, the following examples are given:
mode IV
This implementation is similar to the first, but in this implementation two timeslots are used as one radio block. In particular, the amount of the solvent to be used,
as shown in fig. 12, a cell primary carrier frequency C0 uses 51 multiframes to carry logical channels such as BCH and CCCH;
in TS2/TS4/TS6 of carrier frequency C0, the corresponding time slots of frames with frame numbers 0 and 1 in each 51-multiframe are mapped to a radio block0, the corresponding time slots of frames with frame numbers 10 and 11 are mapped to a radio block1, the corresponding time slots of frames with frame numbers 20 and 21 are mapped to a radio block2, the corresponding time slots of frames with frame numbers 30 and 31 are mapped to a radio block3, and the corresponding time slots of frames with frame numbers 40 and 41 are mapped to a radio block 4.
The newly composed radio block may be used as a downlink control channel, such as a downlink common control channel like an AGCH channel. With this implementation 5 AGCH resource blocks can be added in each 51 multiframe.
Mode five
As shown in fig. 13, a further improvement can be made on the basis of the fourth implementation mode, so that the last frame (frame number 50) in each 51-multiframe is also utilized.
Adopting 51 multiframes to carry logic channels such as BCH, CCCH and the like on a cell main carrier frequency C0; specifically, in TS2/TS4/TS6 of carrier frequency C0, two adjacent 51 multiframes are grouped;
mapping corresponding time slots of frames with frame numbers of 0 and 1 in a first 51-multiframe to be a wireless block0, mapping corresponding time slots of frames with frame numbers of 10 and 11 to be a wireless block1, mapping corresponding time slots of frames with frame numbers of 20 and 21 to be a wireless block2, mapping corresponding time slots of frames with frame numbers of 30 and 31 to be a wireless block3, and mapping corresponding time slots of frames with frame numbers of 40 and 41 to be a wireless block 4;
mapping corresponding time slots of frames with frame numbers of 0 and 1 in the second 51-multiframe to be a wireless block5, mapping corresponding time slots of frames with frame numbers of 10 and 11 to be a wireless block6, mapping corresponding time slots of frames with frame numbers of 20 and 21 to be a wireless block7, mapping corresponding time slots of frames with frame numbers of 30 and 31 to be a wireless block8, and mapping corresponding time slots of frames with frame numbers of 40 and 41 to be a wireless block 9;
and mapping the corresponding time slot combination of the frame with the frame number of 50 in the first 51-multiframe and the second 51-multiframe into a wireless block 10.
The newly composed radio block may be used as a downlink control channel, such as a downlink common control channel like an AGCH channel. With this implementation, 10 AGCH resource blocks can be added in every two 51-multiframes.
Further, in the embodiment of the present invention, any one idle timeslot in 51-multiframes may also be used to map to one radio block. Specific examples are as follows:
the method six:
adopting 51 multiframes to carry logic channels such as BCH, CCCH and the like on a cell main carrier frequency C0; specifically, in TS2/TS4/TS6 of carrier frequency C0, any one or more time slots in corresponding time slots of frames with frame numbers of 0, 1, 10, 11, 20, 21, 30, 31, 40, 41, 50 in each 51-multiframe constitute one or more radio blocks, i.e., one time slot is mapped to one radio block.
The mapped new radio block can be used as a downlink control channel, for example, a downlink common control channel such as an AGCH channel. With this implementation, 11 AGCH resource blocks can be added in each 51 multiframe.
In the above six channel mapping manners, an AGCH channel is taken as an example, and the newly added downlink control channel may also be a PCH channel or a CBCH channel.
802. And the base station sends a system message or a paging message to the terminal, wherein the system message or the paging message comprises an instruction for monitoring the downlink control channel.
The downlink control channel is the newly added downlink common control channel in step 801. Still taking the AGCH channel as an example, the network side indicates, through a system message or a paging message, that the terminal needs to monitor the newly added AGCH channel, and specifically, one or more bits (bits) may be added to the SI2quater, the SI3, or other system messages to carry the indication information.
If the implementation manner of mapping the idle time slot in the physical channel where the extended common control channel CCCH on the cell primary carrier frequency C0 is located to the downlink control channels such as AGCH and the like by the base station is unique, for example, only one of the six manners listed in the above step 801 is selected, a bit may be added to the system message, and the bit is used to indicate the terminal capable of supporting the newly added downlink control channel to monitor the newly added AGCH channel on the CCCH channel where the terminal is located.
If the base station adopts two or more implementation manners to map the idle time slot in the physical channel where the extended common control channel CCCH on the cell main carrier frequency C0 is located to the downlink control channels such as AGCH, a plurality of bits need to be added in the system message as the indicator bits. The indication bit can be used to inform the terminal capable of supporting the newly added downlink control channel to monitor the newly added AGCH channel on the CCCH channel where the terminal is located, and can also indicate the mapping mode adopted by the newly added AGCH channel by the terminal, that is, the system message also contains information indicating the mapping mode of the downlink control channel.
After receiving the system message, the terminal capable of supporting the newly added AGCH channel sends an access request message to the base station, and monitors the newly added AGCH channel in addition to all existing PCH channels and dedicated AGCH channels.
803. And the base station sends the downlink control message through the downlink control channel.
For example, the base station may issue the access response message through the newly added AGCH channel, so as to alleviate the problem that when a plurality of terminals (e.g., M2M terminals) initiate access requests at the same time, the downlink control channel resource is lacking to cause access failure.
The numbers of the above steps are not used to limit the execution sequence; for example, steps 802 and 803 may be repeated a plurality of times after step 801 is completed.
According to the method for sending and receiving the downlink control message, the idle time slot in the physical channel where the extended common control channel CCCH on the cell main carrier frequency is located is mapped into the downlink control channel, so that the idle time slot in the physical channel where the existing extended common control channel CCCH is located can be fully utilized, the utilization rate of channel resources is improved, and the capacity of the downlink control channel is expanded; meanwhile, the problem of lack of the downlink common control channel can be relieved by sending the downlink control message by using the idle time slot in the physical channel where the extended common control channel CCCH is located, and the phenomenon of terminal access failure is reduced.
Example three:
in this embodiment, still taking the network device as a base station as an example, a method for sending and receiving a downlink control message in the embodiment of the present invention is further described. The network device may also be a base station controller, or a combination of a base station and a base station controller.
As shown in fig. 14, the method for sending and receiving a downlink control message provided in the embodiment of the present invention specifically includes the following steps:
1401. the base station maps the idle time slot in the physical channel where the extended common control channel CCCH on the cell main carrier frequency C0 is located into a downlink control channel.
In this embodiment, the scheme in the present invention is described by taking the example of mapping the idle timeslot to an access response channel AGCH. The downlink control channel may of course also be a paging channel PCH or a cell broadcast channel CBCH.
Specifically, the implementation manner of mapping the idle timeslot in the physical channel where the extended CCCH channel on carrier frequency C0 is located to the AGCH channel is substantially the same as that in step 801 in the embodiment, and is not described here again.
1402. And the base station receives terminal capability information provided by the terminal, wherein the terminal capability information indicates whether the terminal supports the downlink control channel.
The terminal sends terminal capability indication information to the network side to indicate whether the terminal has the capability of supporting the newly added downlink control channel. The method for the terminal to send the capability indication information to the base station may be to include the capability of whether to support the newly added downlink control channel in the wireless capability information and send the capability indication information to the network, or to add the capability indication information in the access request message to notify the network whether the terminal can support the newly added downlink control channel currently.
If the newly added downlink control channel is used for the paging channel PCH, the terminal monitors the newly added downlink paging channel belonging to the terminal.
If the newly added downlink control channel is used for the AGCH channel, the network side can issue an access response message aiming at the terminal on the newly added AGCH channel after acquiring the terminal capability indication information. After the terminal capable of reading the newly added AGCH channel sends the access request message, it needs to monitor the newly added AGCH channel in addition to all existing PCHs and dedicated AGCH channels.
1403. And the base station sends a downlink control message to the terminal supporting the downlink control channel through the downlink control channel.
The numbers of the above steps are not used to limit the execution sequence; for example, steps 1402 and 1403 may be repeated a plurality of times after step 1401 is completed.
According to the method for sending and receiving the downlink control message provided by the embodiment of the invention, the idle time slot in the physical channel where the extended common control channel CCCH on the cell main carrier frequency is located is mapped into the downlink control channel, so that the idle time slot in the physical channel where the existing extended common channel CCCH is located can be fully utilized, the utilization rate of channel resources is improved, and the capacity expansion of the downlink control channel is realized; meanwhile, the problem of lack of the downlink common control channel can be relieved by sending the downlink control message by using the idle time slot in the physical channel where the extended common control channel CCCH is located, and the phenomenon of terminal access failure is reduced.
Of course, in the process of specific implementation, the methods in the second embodiment and the third embodiment may also be implemented in combination. For example, the terminal may report its own terminal capability information to the base station first, and inform the base station whether or not it supports the newly added downlink control channel, and then the base station may send a downlink control message to the terminal supporting the newly added downlink control channel according to the terminal capability information; that is, after reporting the terminal capability information of the terminal supporting the newly added downlink control channel, the terminal supporting the newly added downlink control channel can monitor the newly added downlink control channel to obtain the corresponding downlink control message.
Example four:
corresponding to the foregoing method embodiment, this embodiment provides a network device and a terminal that can be used to implement the foregoing methods for sending and receiving a downlink control message.
As shown in fig. 15, the network device includes: a mapping unit 151 and a transmitting unit 152;
a mapping unit 151, configured to map an idle timeslot in a physical channel where an extended common control channel CCCH on a cell main carrier frequency is located as a downlink control channel;
a sending unit 152, configured to send a downlink control message through the downlink control channel.
The primary carrier frequency C0 adopts 51-multiframes to carry downlink control channels such as BCH and CCCH.
For the above method embodiments, the idle time slots in the physical channel where the extended common channel CCCH on the carrier frequency C0 is located are mapped to AGCH channels, and correspondingly, the mapping unit 151 in this embodiment may also be specifically configured to combine 4 idle time slots, or 2 idle time slots, or 1 idle time slot into one radio block in the physical channel where the same extended common control channel on the cell main carrier frequency is located; the radio block is used for carrying downlink control messages.
Specifically, the mapping unit is specifically configured to map, in a physical channel where a same extended common control channel on the cell main carrier frequency is located, corresponding time slots of four idle frames in one 51-multiframe into a radio block, where the four idle frames include two groups of idle frames in the same 51-multiframe, and each group of idle frames includes two consecutive idle frames; two groups of idle frames can be separated by two wireless blocks or 8 non-idle frames; of course, the two groups of idle frames may also be any two groups of idle frames in one 51-multiframe, and further, the four idle frames may also be any four idle frames in one 51-multiframe.
And/or mapping corresponding time slots of the last group of idle frames in the 51 multiframes and the first group of idle frames in another 51 multiframes adjacent to the 51 multiframes into a wireless block;
and/or mapping the corresponding time slot combination of the frame with the frame number of 50 in the 51 multiframes and the frame with the frame number of 50 in the other three 51 multiframes continuous to the 51 multiframes into a wireless block.
Wherein, the four idle frames in the same 51 multiframe may be frames with frame numbers of 0, 1, 10, and 11 in one 51 multiframe and/or frames with frame numbers of 20, 21, 30, and 31 in the 51 multiframe; or, the four idle frames in the same 51 multiframe are frames with frame numbers of 10, 11, 20, and 21 in one 51 multiframe and/or frames with frame numbers of 30, 31, 40, and 41 in the 51 multiframe.
In order to be able to explain more vividly the implementation of the above mapping unit, several examples of the mapping unit are also provided in the present embodiment; such as:
the mapping unit 151 includes a first mapping module, configured to map, in TS2/TS4/TS6 on the cell main carrier frequency, respective time slots of frames with frame numbers 0, 1, 10, and 11 in a 51-multiframe as one radio block, and map respective time slots of frames with frame numbers 20, 21, 30, and 31 in the 51-multiframe as one radio block;
or,
the mapping unit 151 includes a second mapping module, configured to map, in TS2/TS4/TS6 on the cell main carrier frequency, corresponding time slots of frames with frame numbers of 0, 1, 10, and 11 in a first 51 multiframe as a group of two adjacent 51 multiframes as a radio block and corresponding time slots of frames with frame numbers of 20, 21, 30, and 31 as a radio block, map corresponding time slots of frames with frame numbers of 10, 11, 20, and 21 in a second 51 multiframe as a radio block and corresponding time slots of frames with frame numbers of 30, 31, 40, and 41 as a radio block, and map corresponding time slots of frames with frame numbers of 40 and 41 in the first 51 multiframe and corresponding time slots of frames with frame numbers of 0 and 1 in the second 51 multiframe as a radio block;
or,
the mapping unit 151 includes a third mapping module, configured to map, in TS2/TS4/TS6 on the cell main carrier frequency, the corresponding time slots of frames with frame numbers of 0, 1, 10, and 11 in a first 51 multiframe as a group into one radio block and the corresponding time slots of frames with frame numbers of 20, 21, 30, and 31 in the first 51 multiframe as one radio block, map the corresponding time slots of frames with frame numbers of 10, 11, 20, and 21 in a second 51 multiframe as one radio block and the corresponding time slots of frames with frame numbers of 30, 31, 40, and 41 in the second 51 multiframe as one radio block, and map the corresponding time slots of frames with frame numbers of 40 and 41 in the first 51 multiframe and the corresponding time slots of frames with frame numbers of 0 and 1 in the second 51 multiframe as one radio block;
mapping corresponding time slots of frames with frame numbers of 0, 1, 10 and 11 in a third 51 multiframe into a wireless block, mapping corresponding time slots of frames with frame numbers of 20, 21, 30 and 31 into a wireless block, mapping corresponding time slots of frames with frame numbers of 10, 11, 20 and 21 in a fourth 51 multiframe into a wireless block, mapping corresponding time slots of frames with frame numbers of 30, 31, 40 and 41 into a wireless block, and mapping corresponding time slots of frames with frame numbers of 40 and 41 in the third 51 multiframe and frames with frame numbers of 0 and 1 in the fourth 51 multiframe into a wireless block;
and mapping a corresponding time slot combination of a frame with a frame number of 50 in the first, second, third and fourth 51-multiframes to one radio block.
In addition, the mapping unit may be further configured to map, in a physical channel in which the same extended common control channel on the cell main carrier frequency is located, corresponding time slots of two consecutive idle frames in one 51-multiframe to one radio block; and/or the presence of a gas in the gas,
and mapping the corresponding time slot combination of the frame with the frame number of 50 in the 51-multiframe and the frame with the frame number of 50 in another 51-multiframe continuous to the 51-multiframe into a wireless block.
Specifically, the above mapping unit can be illustrated by the following example:
the mapping unit 151 includes a fourth mapping module, which is configured to map, in TS2/TS4/TS6 on the cell main carrier frequency, respective time slots of frames with frame numbers 0 and 1 in 51-multiframes into one radio block, respective time slots of frames with frame numbers 10 and 11 into one radio block, respective time slots of frames with frame numbers 20 and 21 into one radio block, respective time slots of frames with frame numbers 30 and 31 into one radio block, and respective time slots of frames with frame numbers 40 and 41 into one radio block;
or,
the mapping unit 151 includes a fifth mapping module, which is configured to map, in TS2/TS4/TS6 on the cell main carrier frequency, the corresponding time slots of frames with frame numbers 0 and 1 in the first 51 multiframe as a group, map the corresponding time slots of frames with frame numbers 10 and 11 as a radio block, map the corresponding time slots of frames with frame numbers 20 and 21 as a radio block, map the corresponding time slots of frames with frame numbers 30 and 31 as a radio block, and map the corresponding time slots of frames with frame numbers 40 and 41 as a radio block;
mapping the corresponding time slots of the frames with the frame numbers of 0 and 1 in the second 51-multiframe to be a wireless block, mapping the corresponding time slots of the frames with the frame numbers of 10 and 11 to be a wireless block, mapping the corresponding time slots of the frames with the frame numbers of 20 and 21 to be a wireless block, mapping the corresponding time slots of the frames with the frame numbers of 30 and 31 to be a wireless block, and mapping the corresponding time slots of the frames with the frame numbers of 40 and 41 to be a wireless block;
and mapping the corresponding time slot combination of the frame with the frame number of 50 in the first 51 multiframe and the second 51 multiframe into a wireless block.
Further, the mapping unit may be further configured to map a corresponding timeslot of an idle frame in the 51-multiframe to a radio block; for example,
the mapping unit 151 includes a sixth mapping module, which is configured to, in TS2/TS4/TS6 on the cell main carrier frequency, form one or more radio blocks from any one or more time slots in corresponding time slots of frames with frame numbers 0, 1, 10, 11, 20, 21, 30, 31, 40, 41, 50 in a 51-multiframe, that is, map one time slot to one radio block.
The radio block may be used as a downlink control channel, for example, a downlink common control channel such as AGCH.
As to how to use the newly added downlink control channel, there are two ways:
firstly, a system message or a paging message is sent to a terminal through the sending unit 152, and the system message or the paging message includes an indication for monitoring the downlink control channel; in general, a network device such as a base station may set a single implementation manner for the mapping unit, so that when sending a system message or a paging message to a terminal, only an indication for monitoring the downlink control needs to be carried;
further, if the mapping unit has multiple implementation manners at the same time, that is, there are multiple implementation manners for mapping the idle timeslot to the downlink control channel, information indicating the mapping manner of the downlink control channel needs to be added to the system message or the paging message; therefore, the terminal can be informed to monitor the newly added downlink control channel, and the terminal can be indicated to the mapping mode adopted by the newly added downlink control channel.
Thus, the terminal capable of supporting the newly added downlink control channel can use the newly added downlink control channel after receiving the system message.
Secondly, the network device provided in this embodiment may further include a receiving unit 153; the receiving unit 153 is configured to receive terminal capability information provided by a terminal, where the terminal capability information indicates whether the terminal supports the downlink control channel;
in this case, the sending unit 152 sends the downlink control message to the terminal supporting the downlink control channel through the downlink control channel.
Thus, the terminal informs the network side of the capability of the terminal, and then the network side instructs the terminal which has the capability of supporting the newly added downlink control channel to use the newly added downlink control channel.
As shown in fig. 16, the terminal in the embodiment of the present invention includes: a first receiving unit 161 and a second receiving unit 162; wherein,
a first receiving unit 161, configured to receive a system message or a paging message sent by a network device, where the system message or the paging message includes an indication for monitoring a newly added downlink control channel; the newly added downlink control channel is obtained by mapping idle time slots in a physical channel in which an extended common control channel on the cell main carrier frequency is located;
a second receiving unit 162, configured to receive the downlink control message through the newly added downlink control channel.
Further, the terminal further includes:
a sending unit 163, configured to report terminal capability information of the current terminal to the network device, where the terminal capability information indicates whether the terminal supports the downlink control channel.
The process of sending and receiving the downlink control message by using the network device and the terminal in this embodiment may refer to the method description in the second embodiment and the method description in the third embodiment, and details are not described here.
In the embodiment of the invention, the idle time slot in the physical channel where the extended common control channel CCCH on the cell main carrier frequency is located is mapped into the downlink control channel, so that the idle time slot in the physical channel where the existing extended common control channel CCCH is located can be fully utilized, the utilization rate of channel resources is improved, and the capacity expansion of the downlink control channel is realized; meanwhile, the problem of lack of a downlink control channel can be relieved by sending the downlink control message by using the idle time slot in the physical channel where the extended common channel CCCH is located, and the phenomenon of terminal access failure is reduced.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary hardware platform, and may also be implemented by hardware entirely. With this understanding in mind, all or part of the technical solutions of the present invention that contribute to the background can be embodied in the form of a software product, which can be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments or some parts of the embodiments of the present invention.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (18)
1. A method for sending downlink control messages is applied to a GSM system, and the method comprises the following steps:
mapping an idle time slot in a physical channel where an extended common control channel on a cell main carrier frequency is located into a downlink control channel, wherein the extended common control channel is a common control channel located on a time slot 2, and/or a time slot 4, and/or a time slot 6 on the cell main carrier frequency, and the idle time slot is a frame corresponding to a frequency correction channel and a synchronization channel in the physical channel where the extended common control channel is located and in a time slot 0 on the cell main carrier frequency, and time slots corresponding to part or all frames in other idle frames;
sending a downlink control message through the downlink control channel;
wherein, the mapping idle time slot in the physical channel where the extended common control channel on the cell main carrier frequency is located to the downlink control channel includes: in a physical channel where the same extended common control channel on the cell main carrier frequency is located, combining 4 idle time slots, or 2 idle time slots, or 1 idle time slot into a wireless block; the radio block is used for carrying downlink control messages.
2. The method for sending downlink control message according to claim 1, wherein the cell primary carrier frequency uses 51 multiframes;
in the physical channel where the same extended common control channel on the cell main carrier frequency is located, 4 idle time slots are combined into one radio block, including:
mapping corresponding time slots of four idle frames in a 51 multiframe into a wireless block in a physical channel where the same extended common control channel on the cell main carrier frequency is located, wherein the four idle frames comprise two groups of idle frames, and each group of idle frame comprises two continuous idle frames;
and/or mapping the idle frames with the frame numbers of 40 and 41 in the 51 multiframes and the corresponding time slots of the first two idle frames in the next 51 multiframes adjacent to the 51 multiframes into a wireless block;
and/or mapping a corresponding time slot combination of the last frame in the 51 multiframes and the last frame in the other three 51 multiframes continuous to the 51 multiframes into a wireless block.
3. The method according to claim 2, wherein two radio blocks are spaced between two idle frames included in the four idle frames; or 8 non-idle frames are spaced between the two groups of idle frames.
4. The method according to claim 3, wherein the four idle frames are idle frames with frame numbers of 0, 1, 10, and 11 in a same 51-multiframe and/or idle frames with frame numbers of 20, 21, 30, and 31 in the 51-multiframe;
or the four idle frames are idle frames with frame numbers of 10, 11, 20, and 21 in the same 51-multiframe and/or idle frames with frame numbers of 30, 31, 40, and 41 in the 51-multiframe.
5. The method for sending downlink control message according to claim 1, wherein the cell primary carrier frequency uses 51 multiframes;
in the physical channel where the same extended common control channel on the cell main carrier frequency is located, forming a radio block with 2 idle time slots, including:
mapping corresponding time slots of two continuous idle frames in a 51 multiframe into a wireless block in a physical channel where the same extended common control channel on the cell main carrier frequency is located; and/or the presence of a gas in the gas,
and mapping the corresponding time slot combination of the last frame in the 51 multiframes and the last frame in the next 51 multiframes continuous to the 51 multiframes into a wireless block.
6. The method according to claim 1, wherein before the sending the downlink control message through the downlink control channel, the method further comprises:
and sending a system message or a paging message to the terminal, wherein the system message or the paging message comprises an instruction for monitoring the downlink control channel.
7. The method of claim 6, wherein the system message or the paging message further includes information indicating a mapping manner of the downlink control channel.
8. The method according to claim 1, wherein before the sending the downlink control message through the downlink control channel, the method further comprises:
receiving terminal capability information provided by a terminal, wherein the terminal capability information indicates whether the terminal supports the downlink control channel or not;
the sending of the downlink control message through the downlink control channel is as follows: and sending a downlink control message to a terminal supporting the downlink control channel through the downlink control channel.
9. A method for receiving downlink control messages is applied to a GSM system, and the method comprises the following steps:
receiving a system message or a paging message, wherein the system message or the paging message comprises an indication for monitoring a newly added downlink control channel; the newly-added downlink control channel is obtained by mapping idle time slots in a physical channel where an extended common control channel on a cell main carrier frequency is located, the extended common control channel is a common control channel located on a time slot 2, and/or a time slot 4, and/or a time slot 6 on the cell main carrier frequency, and the idle time slots are frames corresponding to a frequency correction channel and a synchronous channel in the time slot 0 on the cell main carrier frequency in the physical channel where the extended common control channel is located, and time slots corresponding to part or all frames in other idle frames;
and receiving a downlink control message through the newly added downlink control channel.
10. The method for receiving a downlink control message according to claim 9, further comprising, before the receiving a downlink control message through the newly added downlink control channel:
and reporting terminal capability information of the current terminal, wherein the terminal capability information indicates whether the terminal supports the newly added downlink control channel.
11. A network device, applied in a GSM system, the network device comprising:
a mapping unit, configured to map an idle time slot in a physical channel in which an extended common control channel on a cell main carrier frequency is located as a downlink control channel, where the extended common control channel is a common control channel located in a time slot 2, and/or a time slot 4, and/or a time slot 6 on the cell main carrier frequency, and the idle time slot is a frame corresponding to a frequency correction channel and a synchronization channel in a time slot 0 on the cell main carrier frequency in the physical channel in which the extended common control channel is located, and a time slot corresponding to a part or all of frames in other idle frames;
a sending unit, configured to send a downlink control message through the downlink control channel,
the mapping unit is specifically configured to combine 4 idle timeslots, or 2 idle timeslots, or 1 idle timeslot into one radio block in a physical channel in which the same extended common control channel on the cell primary carrier frequency is located; the radio block is used for carrying downlink control messages.
12. The network device of claim 11, wherein the cell primary carrier frequency employs 51 multiframes;
the mapping unit is specifically configured to map, in a physical channel where a same extended common control channel on the cell main carrier frequency is located, corresponding time slots of four idle frames in one 51-multiframe into a radio block, where the four idle frames include two groups of idle frames in the same 51-multiframe, and each group of idle frames includes two consecutive idle frames;
and/or mapping the idle frames with the frame numbers of 40 and 41 in the 51 multiframes and the corresponding time slots of the first two idle frames in the next 51 multiframes adjacent to the 51 multiframes into a wireless block;
and/or mapping a corresponding time slot combination of the last frame in the 51 multiframes and the last frame in the other three 51 multiframes continuous to the 51 multiframes into a wireless block.
13. The network device of claim 11, wherein the cell primary carrier frequency employs 51 multiframes;
the mapping unit is specifically configured to map, in a physical channel where the same extended common control channel on the cell main carrier frequency is located, corresponding time slots of two consecutive idle frames in one 51-multiframe into one radio block; and/or the presence of a gas in the gas,
and mapping the corresponding time slot combination of the last frame in the 51 multiframes and the last frame in the next 51 multiframes continuous to the 51 multiframes into a wireless block.
14. The network device of claim 11,
the sending unit is further configured to send a system message or a paging message to the terminal, where the system message or the paging message includes an indication for monitoring the downlink control channel.
15. The network device of claim 14, wherein the system message or the paging message further includes information indicating a mapping manner of the downlink control channel.
16. The network device of claim 11, further comprising:
a receiving unit, configured to receive terminal capability information provided by a terminal, where the terminal capability information indicates whether the terminal supports the downlink control channel;
the sending unit is specifically configured to send a downlink control message to a terminal supporting the downlink control channel through the downlink control channel.
17. A terminal, applied in a GSM system, the terminal comprising:
a first receiving unit, configured to receive a system message or a paging message, where the system message or the paging message includes an indication for monitoring a newly added downlink control channel; the newly-added downlink control channel is obtained by mapping idle time slots in a physical channel where an extended common control channel on a cell main carrier frequency is located, the extended common control channel is a common control channel located on a time slot 2, and/or a time slot 4, and/or a time slot 6 on the cell main carrier frequency, and the idle time slots are frames corresponding to a frequency correction channel and a synchronous channel in a time slot 0 on the cell main carrier frequency in the physical channel where the extended common control channel is located, and time slots corresponding to part or all of other idle frames;
and the second receiving unit is used for receiving the downlink control message through the newly added downlink control channel.
18. The terminal of claim 17, further comprising:
a sending unit, configured to report terminal capability information of a current terminal, where the terminal capability information indicates whether the terminal supports the downlink control channel.
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| CN201110042514.XA CN102647791B (en) | 2011-02-22 | 2011-02-22 | Method and device for sending and receiving downlink control message |
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| BR112013021487A BR112013021487A2 (en) | 2011-02-22 | 2012-02-22 | method and apparatus for sending and receiving downlink control message |
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| CN113692000B (en) * | 2017-05-05 | 2023-03-24 | 展讯通信（上海）有限公司 | Method, terminal and storage medium for receiving common control message |
| WO2019134181A1 (en) * | 2018-01-05 | 2019-07-11 | Oppo广东移动通信有限公司 | Method and device for radio communication |
| WO2019196011A1 (en) * | 2018-04-10 | 2019-10-17 | Oppo广东移动通信有限公司 | Communication method and terminal, and network device |
| CN109547147B (en) * | 2018-12-10 | 2020-06-05 | 航天科工空间工程发展有限公司 | Time division multiplexing multi-mode telemetering transmission design method |
| WO2023065331A1 (en) * | 2021-10-22 | 2023-04-27 | 北京小米移动软件有限公司 | Information transmission method and apparatus, information receiving method and apparatus, and device and storage medium |
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| EP1182899A1 (en) * | 2000-08-24 | 2002-02-27 | Motorola, Inc. | Rotating channel allocation in a TDMA-based radio communication system |
| CN101541084B (en) * | 2009-04-24 | 2010-12-01 | 重庆金美通信有限责任公司 | Transmission method of signaling process in TDMA mode |
| CN101924587A (en) * | 2010-08-10 | 2010-12-22 | 北京大学 | Method for dynamically adjusting uplink and downlink time slots in time division duplex communication method |
| CN101931500A (en) * | 2010-08-19 | 2010-12-29 | 优能通信科技（杭州）有限公司 | Method for transmitting backward control signaling by using control channel in DMR system |
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| CN1893344A (en) * | 2005-07-04 | 2007-01-10 | 上海原动力通信科技有限公司 | Multi-carrier-wave communication system TSO time-slot resource distribution method and grouped data transmission method |
| CN101184277A (en) * | 2007-12-07 | 2008-05-21 | 中兴通讯股份有限公司 | Inter-base station synchronization method in time division multiple access system |
| CN101521914A (en) * | 2008-02-26 | 2009-09-02 | 三星电子株式会社 | Mapping method used for HS-SCCH resource allocation information field |
| CN101707800A (en) * | 2009-06-30 | 2010-05-12 | 重庆重邮信科通信技术有限公司 | Method and device for obtaining synchronization timing of GSM neighboring cell |
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| BR112013021487A2 (en) | 2016-10-11 |
| CN102647791A (en) | 2012-08-22 |
| WO2012113332A1 (en) | 2012-08-30 |
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