CN110234135B - Method and device for data transmission by using single radio frequency and user equipment - Google Patents
Method and device for data transmission by using single radio frequency and user equipment Download PDFInfo
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- CN110234135B CN110234135B CN201810179829.0A CN201810179829A CN110234135B CN 110234135 B CN110234135 B CN 110234135B CN 201810179829 A CN201810179829 A CN 201810179829A CN 110234135 B CN110234135 B CN 110234135B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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Abstract
The invention provides a method and a device for data transmission by using single radio frequency and user equipment. The method comprises the following steps: after establishing RRC connection and determining a primary cell, configuring a secondary cell according to RRC information; and using single radio frequency time sharing to transmit and receive data of the primary cell and the secondary cell. The invention can realize the data service such as the auxiliary cell search and the like without influencing the service of the main cell, can improve the data performance and reduce the cost.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for data transmission using a single radio frequency, and a user equipment.
Background
Carrier Aggregation (CA) is a technology for increasing transmission bandwidth introduced in the process of continuous enhancement and evolution of an LTE system, and refers to a base station aggregating 2 or more Carrier units (CC) together to provide service for User Equipment (UE) with a larger transmission bandwidth, where the maximum number of Carrier units is 5, and may be adjacent or spaced in frequency. A carrier initially accessed by the UE is referred to as a Primary Cell (PCell) and is responsible for RRC (Radio Resource Control) communication with the UE, and carriers other than the Primary carrier are referred to as Secondary cells (scells) and are added during RRC reconfiguration to provide additional Radio resources.
An existing terminal supporting carrier aggregation generally designs two radio frequency chips, one chip is used for receiving and sending service data such as voice and the like on a main cell, and the other chip is used for transmitting data such as auxiliary cell search and the like.
In the process of implementing the invention, the inventor finds that at least the following technical problems exist in the prior art:
after the terminal establishes the RRC connection and adds configuration information of the secondary cell, regardless of whether there is a service in the secondary cell, two radio frequency chips need to be turned on, and each radio frequency corresponds to data processing of one carrier, and performs upper and lower service processing, cell search, and measurement, which increases power consumption.
Disclosure of Invention
The method, the device and the user equipment for transmitting data by using the single radio frequency provided by the invention can transmit and receive data of the main cell and the auxiliary cell by using the single radio frequency in a time-sharing manner, thereby improving the data performance and reducing the cost and the power consumption.
In a first aspect, the present invention provides a method for data transmission using a single radio frequency, the method comprising:
after establishing RRC connection and determining a primary cell, configuring a secondary cell according to RRC information;
and using single radio frequency time sharing to transmit and receive data of the primary cell and the secondary cell.
Optionally, the receiving and sending the data of the primary cell and the secondary cell by using the single radio frequency time division includes:
and according to the starting condition of the pilot frequency measurement, transmitting and receiving the data of the secondary cell in the gap allocated by the base station, or transmitting and receiving the data of the secondary cell in the preset gap.
Optionally, the receiving and sending the secondary cell data in the gap allocated by the base station according to the on condition of the inter-frequency measurement includes:
and when the pilot frequency measurement is started, the auxiliary cell frequency point is used as the pilot frequency point to receive and transmit data in the interval distributed by the base station.
Optionally, the receiving and sending the secondary cell data in the preset gap according to the on condition of the inter-frequency measurement includes:
when the inter-frequency measurement is not on, the specified period of the fixed cycle is set as the gap under the non-DRX operation mechanism.
Optionally, the receiving and sending the secondary cell data in the preset gap according to the on condition of the inter-frequency measurement further includes:
when the inter-frequency measurement is not on, a specified period before the duration timer wakes up is set as a gap under the DRX operation mechanism.
Optionally, the method further comprises:
and transmitting and receiving the data of the main cell outside the interval allocated by the base station or outside the preset interval.
Optionally, the method further comprises:
and transmitting and receiving the data of the primary cell in the time when the duration timer is awake.
In a second aspect, the present invention provides an apparatus for data transmission using a single radio frequency, the apparatus comprising:
the configuration unit is used for configuring the secondary cell according to the RRC message after the RRC connection is established and the primary cell is determined;
and the first processing unit is used for carrying out the data receiving and sending of the main cell and the auxiliary cell by using single radio frequency time sharing.
Optionally, the first processing unit is configured to perform, according to an on condition of inter-frequency measurement, transceiving of secondary cell data in a gap allocated by the base station, or perform transceiving of secondary cell data in a preset gap.
Optionally, the first processing unit is configured to receive and transmit data in a gap allocated by the base station by using the secondary cell frequency point as the pilot frequency point when the pilot frequency measurement is started.
Optionally, the first processing unit is configured to set the specified period of the fixed cycle as the gap in a non-DRX operation mechanism when the inter-frequency measurement is not turned on.
Optionally, the first processing unit is further configured to set, as the gap, a specified period before the duration timer wakes up under the DRX operation mechanism when the inter-frequency measurement is not turned on.
Optionally, the apparatus further comprises:
and the second processing unit is used for transmitting and receiving the data of the main cell outside the interval allocated by the base station or outside the preset interval.
Optionally, the apparatus further comprises:
and a third processing unit, configured to perform primary cell data transceiving within a time period in which the duration timer is awake.
In a third aspect, the present invention provides a user equipment, where the user equipment includes the above apparatus for data transmission using single radio frequency.
According to the method, the device and the user equipment for transmitting data by using the single radio frequency, provided by the embodiment of the invention, when the UE is in a connected state and the auxiliary cell is not activated, the single radio frequency is used for carrying out time division multiplexing on the main cell and the auxiliary cell, and when the main cell carries out services such as voice and the like, the data service of the auxiliary cell is carried out by using the gaps distributed by the base station or the preset gaps according to different scenes. Compared with the prior art, the invention realizes the data services such as auxiliary cell search and the like without influencing the service of the main cell, can improve the data performance, only needs to design a single radio frequency chip in the aspect of hardware, can reduce the power consumption and reduce the cost.
Drawings
Fig. 1 is a flow chart of a method for data transmission using a single radio frequency according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a scheduling strategy for data transmission using a single radio frequency according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a scheduling strategy for data transmission using a single RF according to another embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a scheduling strategy for data transmission using a single RF according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for data transmission using a single radio frequency according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 present invention provides a method for data transmission using a single radio frequency, as shown in fig. 1, the method includes:
s11, after establishing RRC connection and determining the primary cell, configuring the secondary cell according to the RRC message;
and S12, transmitting and receiving data of the primary cell and the secondary cell by using single radio frequency time sharing.
The LTE provides a mechanism for configuring and de-configuring, activating and deactivating an auxiliary cell, once a terminal supporting carrier aggregation establishes RRC connection, the auxiliary cell can be configured to provide additional wireless resources, when the UE is in a connection state and the auxiliary cell is not activated, the invention uses single radio frequency to carry out time division multiplexing on a main cell and the auxiliary cell, and carries out voice service on the main cell and simultaneously carries out data service on the auxiliary cell by using corresponding GAPs (GAP) according to different scenes.
The following scenarios are mainly available in the LTE connection state: (1) starting inter-frequency measurement in a non-DRX (Discontinuous reception) or DRX working mechanism (no DRX/with DRX) LTE system; (2) the LTE system does not start pilot frequency measurement under a non-DRX working mechanism; (3) the LTE system does not start the inter-frequency measurement under the DRX working mechanism.
Aiming at the three scenes, the invention adopts different scheduling strategies according to whether the LTE system starts the pilot frequency measurement, and realizes the implementation of the data services such as the auxiliary cell search, the measurement and the like by using the single radio frequency.
Optionally, the receiving and sending the data of the primary cell and the secondary cell by using the single radio frequency time division includes:
and according to the starting condition of the pilot frequency measurement, transmitting and receiving the data of the secondary cell in the gap allocated by the base station, or transmitting and receiving the data of the secondary cell in the preset gap.
Optionally, when the LTE system pilot frequency measurement is started, the secondary cell frequency point is used as a pilot frequency point to perform data transceiving in the gap allocated by the base station.
Aiming at a scene (1) in an LTE connection state, no matter an LTE system starts to measure a plurality of pilot frequency points, the frequency points of an auxiliary cell are taken as pilot frequency points and added into a pilot frequency point list, and the pilot frequency GAP distributed by a base station is utilized to search the auxiliary cell. For example, the base station measures n pilot frequency points for the main cell, and after adding the frequency points of the auxiliary cell into the pilot frequency list of the main cell, the pilot frequency points of the main cell are changed into n +1 pilot frequency points, and the priority of the frequency points of the auxiliary cell is set to be high priority.
As shown in fig. 2, for the scheduling strategy diagram of the invention using single radio frequency for data transmission in view of scenario (1), three pilot frequency points are measured, the priority of each frequency point is high as well, and cell search is performed in a GAP at regular GAP periods. The auxiliary cell frequency point is taken as the pilot frequency point and occupies GAP together with other frequency points in turn, so that although the search period of each pilot frequency point is prolonged, the search frequency can be improved to meet the protocol requirement.
Optionally, the method further comprises: and the UE receives and transmits the service data of the main cell outside the GAP allocated by the base station.
The scenario (2) and the scenario (3) in the LTE connection state are the situations where the LTE system does not start inter-frequency measurement, and at this time, the secondary cell data needs to be received and transmitted according to the preset GAP.
DRX is a power saving operation mechanism introduced in LTE, and LTE connected state is under non-DRX (scenario (2)) and DRX operation mechanism (scenario (3)) and different GAPs need to be set.
Optionally, under a non-DRX operating mechanism, setting a specified period of a fixed cycle as GAP;
under the DRX operation mechanism, a specified period before the duration timer wakes up is set to GAP.
Wherein the specified period of the fixed cycle or the specified period before the timer wakes up is 6 ms.
Specifically, for scenario (2) in the LTE connection state, since there is no GAP time slot allocated by the base station, a method of dropping the primary cell service at a fixed period can only be used to provide a GAP for the SCC to perform cell search. As shown in fig. 3, for a scenario (2), a scheduling strategy diagram for performing data transmission using single radio frequency according to the present invention is shown, when a primary cell performs a service, 6ms of service is knocked out for performing cell search for a secondary cell, and such an operation is performed every 480ms, and although the 6ms of knocking out may affect a service of a primary cell, PCC drop is not caused, which not only reduces the impact on downlink service, but also ensures that the secondary cell search is performed in time.
Optionally, the method further comprises: under the non-DRX working mechanism, the UE receives and transmits the service data of the main cell outside the set GAP.
Specifically, for scenario (3) in LTE connected state, under DRX operation mechanism, the UE maintains an awake time after waking up from DRX each time, and the UE receives data during the time, and the DRX maintains the awake time by using an on duration timer (on duration timer). As shown in fig. 4, for scenario (3), the scheduling strategy for data transmission using single radio frequency according to the present invention is schematically shown, and the scheduling strategy wakes up in advance to process a cell search of a secondary cell 6ms before the duration timer, so that even if the base station has no inter-frequency GAP, the impact on the service of the primary cell is avoided.
Optionally, the method further comprises: under the DRX operation mechanism, the UE performs primary cell data reception during the time when the duration timer is awake.
According to the method for transmitting data by using the single radio frequency, provided by the embodiment of the invention, when the UE is in a connected state and the auxiliary cell is not activated, the single radio frequency is used for carrying out time division multiplexing on the main cell and the auxiliary cell, and when the main cell carries out services such as voice and the like, the data service of the auxiliary cell is carried out by using the gaps distributed by the base station or the preset gaps according to different scenes. Compared with the prior art, the invention realizes the data services such as auxiliary cell search and the like without influencing the service of the main cell, can improve the data performance, only needs to design a single radio frequency chip in the aspect of hardware, can reduce the power consumption and reduce the cost.
An embodiment of the present invention further provides an apparatus for performing data transmission using single radio frequency, as shown in fig. 5, the apparatus includes:
a configuration unit 11, configured to configure a secondary cell according to an RRC message after establishing an RRC connection and determining a primary cell;
the first processing unit 12 is configured to perform sending and receiving of data of the primary cell and the secondary cell in a time-sharing manner by using a single radio frequency.
Optionally, the first processing unit is configured to perform, according to an on condition of inter-frequency measurement, transceiving of secondary cell data in a gap allocated by the base station, or perform transceiving of secondary cell data in a preset gap.
Optionally, the first processing unit is configured to receive and transmit data in a gap allocated by the base station by using the secondary cell frequency point as the pilot frequency point when the pilot frequency measurement is started.
Optionally, the first processing unit is configured to set the specified period of the fixed cycle as the gap in a non-DRX operation mechanism when the inter-frequency measurement is not turned on.
Optionally, the first processing unit is further configured to set, as the gap, a specified period before the duration timer wakes up under the DRX operation mechanism when the inter-frequency measurement is not turned on.
Optionally, the specified period of the fixed cycle or the specified period before the timer wakes up is 6 ms.
Optionally, the apparatus further comprises:
and the second processing unit is used for receiving and sending the service data of the main cell outside the interval allocated by the base station or outside the preset interval.
Optionally, the apparatus further comprises:
and a third processing unit, configured to perform primary cell data transceiving within a time period in which the duration timer is awake.
The device for transmitting data by using single radio frequency provided by the embodiment of the invention uses the single radio frequency to perform time division multiplexing on the main cell and the auxiliary cell when the UE is in a connected state and the auxiliary cell is not activated, and performs data service of the auxiliary cell by using the gaps distributed by the base station or the preset gaps according to different scenes while performing services such as voice and the like on the main cell. Compared with the prior art, the invention realizes the data services such as auxiliary cell search and the like without influencing the service of the main cell, can improve the data performance, only needs to design a single radio frequency chip in the aspect of hardware, can reduce the power consumption and reduce the cost.
The embodiment of the invention also provides the user equipment which comprises the device for carrying out data transmission by using the single radio frequency.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
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 (11)
1. A method for data transmission using a single radio frequency, the method comprising:
after establishing RRC connection and determining a primary cell, configuring a secondary cell according to RRC information;
the method for transmitting and receiving data of the primary cell and the secondary cell by using single radio frequency time sharing comprises the following steps:
according to the starting condition of the pilot frequency measurement, transmitting and receiving the data of the auxiliary cell in the gap distributed by the base station, or transmitting and receiving the data of the auxiliary cell in the preset gap; it includes:
when the inter-frequency measurement is not on, a specified period before the duration timer wakes up is set as a gap under the DRX operation mechanism.
2. The method of claim 1, wherein the performing, according to the on-condition of inter-frequency measurement, the transceiving of the secondary cell data in the gap allocated by the base station comprises:
and when the pilot frequency measurement is started, the auxiliary cell frequency point is used as the pilot frequency point to receive and transmit data in the interval distributed by the base station.
3. The method of claim 1, wherein the performing, according to the on-state of the inter-frequency measurement, the secondary cell data transmission and reception within a preset gap comprises:
when the inter-frequency measurement is not on, the specified period of the fixed cycle is set as the gap under the non-DRX operation mechanism.
4. The method according to any one of claims 1 to 3, further comprising:
and transmitting and receiving the data of the main cell outside the interval allocated by the base station or outside the preset interval.
5. The method of claim 4, further comprising:
and transmitting and receiving the data of the primary cell in the time when the duration timer is awake.
6. An apparatus for data transmission using a single radio frequency, the apparatus comprising:
the configuration unit is used for configuring the secondary cell according to the RRC message after the RRC connection is established and the primary cell is determined;
the first processing unit is used for receiving and transmitting data of the main cell and the auxiliary cell in a time-sharing mode by using single radio frequency;
the first processing unit is configured to perform, according to the on-condition of the inter-frequency measurement, transceiving of secondary cell data in a gap allocated by the base station, or perform transceiving of secondary cell data in a preset gap;
the first processing unit is further configured to set a specified period before the duration timer wakes up as a gap under the DRX operation mechanism when the inter-frequency measurement is not turned on.
7. The apparatus of claim 6, wherein the first processing unit is configured to transmit and receive data in a gap allocated by a base station by using the secondary cell frequency point as an inter-frequency point when inter-frequency measurement is started.
8. The apparatus of claim 6, wherein the first processing unit is configured to set a specified period of a fixed cycle as a gap in a non-DRX operation mechanism when inter-frequency measurement is not turned on.
9. The apparatus of any one of claims 6 to 8, further comprising:
and the second processing unit is used for transmitting and receiving the data of the main cell outside the interval allocated by the base station or outside the preset interval.
10. The apparatus of claim 9, further comprising:
and a third processing unit, configured to perform primary cell data transceiving within a time period in which the duration timer is awake.
11. A user equipment, characterized in that the user equipment comprises the apparatus for data transmission using a single radio frequency according to any one of claims 6 to 10.
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