CN102131272A - Power control method and equipment - Google Patents
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Abstract
The embodiment of the invention provides a power control method and power control equipment. The power control method comprises the following steps that: first equipment configures a first power bias for all or part of second equipment in cells controlled by the first equipment; and the first equipment sends broadcast messages, wherein the broadcast messages comprise a pilot frequency power of the first equipment and first indicating information for indicating the first power bias so as to enable the second equipment to determine a downlink power of the first equipment according to the pilot frequency information and the first indicating information. The method and the equipment provided by the embodiment of the invention can solve the problems that the radio resource control (RRC) signaling flow is increased when the existing evolved node (eNB) adjusts the downlink signal power to cause serious consumption of null resources.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a power control method and apparatus.
Background
In a Long Term Evolution (LTE) system, a User Equipment (UE) located at a cell edge is relatively severely interfered by an adjacent cell. An evolved NodeB (eNB) may adjust the power of a transmitted downlink signal to reduce interference of the eNB to a UE at an edge of an adjacent cell, or improve interference rejection of the UE at the edge of the cell controlled by the eNB.
In the prior art, when the eNB adjusts the downlink signal power each time, it needs to send a Radio Resource Control (RRC) signaling to each UE, and notify the UE of the information that the eNB adjusts the downlink signal power, so that each UE receives the downlink signal sent by the eNB according to the information of the downlink signal power of the eNB. The process increases the RRC signaling traffic and consumes significant air interface resources.
Disclosure of Invention
The embodiment of the invention provides a power control method and equipment, which can solve the problem that the air interface resource consumption is serious because the RRC signaling flow is increased when the downlink signal power is adjusted by the conventional eNB every time.
An aspect of the present invention provides a power control method, including:
the method comprises the steps that first equipment configures a first power bias for all or part of second equipment in a cell controlled by the first equipment;
the first device sends a broadcast message, where the broadcast message includes pilot power of the first device and first indication information for indicating the first power offset, so that the second device determines downlink power of the first device according to the pilot information and the first indication information.
Another aspect of the invention provides an apparatus comprising:
a configuration unit, configured to configure a first power offset for all or part of second devices in a cell controlled by the device;
a sending unit, configured to send a broadcast message to the second device, where the broadcast message includes a pilot power of the device and first indication information used for indicating the first power offset, so that the second device determines a downlink power of the device according to the pilot power and the first indication information.
Another aspect of the present invention provides a power control method, including:
the method comprises the steps that a second device receives a broadcast message sent by a first device, wherein the broadcast message comprises first indication information, the first indication information is used for indicating a first power offset, and the first power offset is a downlink power offset shared by the second device and other second devices in a cell where the second device is located;
and the second equipment determines the power of the downlink signal sent by the first equipment according to the pilot power and the first power offset.
Another aspect of the invention provides an apparatus comprising:
a receiving unit, configured to receive a broadcast message sent by a first device, where the broadcast message includes first indication information, and the first indication information is used to indicate a first power offset, where the first power offset is a downlink power offset shared by the device and another device in a cell where the device is located; and
and the processing unit is used for determining the power of the downlink signal sent by the first equipment according to the pilot power and the first power offset.
The embodiment of the invention can enable the base station to quickly adjust the downlink signal power configured for each UE in the cell controlled by the base station, avoid the serious consumption of air interface resources and not influence the coverage of the cell.
Drawings
FIG. 1 is a schematic flow chart of a method provided by an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a method provided by another embodiment of the present invention;
FIG. 3 is a schematic flow chart of a method provided by another embodiment of the present invention;
fig. 4a and fig. 4b are schematic flow diagrams of a method according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of an apparatus provided by another embodiment of the present invention;
fig. 6 is a schematic diagram of an apparatus according to another embodiment of the present invention.
Detailed Description
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.
In fact, the method provided in each embodiment of the present invention is also applicable to other sending devices and receiving devices of downlink signals, for example, the sending device may be an evolved base station, an Access Point (Access Point), a Relay device (Relay), a Home base station (Home NodeB), a Home evolved base station (Home eNodeB), and the like, and the receiving device may be a mobile phone, various mobile terminals, or a fixed terminal.
The embodiments of the present invention are described by taking power control of the PDSCH (physical downlink Shared Channel) power of the LTE system as an example, but the present invention is not limited thereto. The embodiments of the present invention are applicable to power control for downlink channel power in various communication systems. For example, in a Wideband Code Division Multiple Access (WCDMA) system or a time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system that employs a High Speed Downlink Packet Access (HSDPA) technology, power control is performed on High-Speed Physical Downlink shared channel (HS-PDSCH) power. For another example, in the WCDMA system of R99, power control is performed on the Physical Downlink Shared Channel (PDSCH) power. For another example, in a Code Division Multiple Access (CDMA) system, power control is performed for forward Traffic Channel (forward Traffic Channel) power. For another example, in a Worldwide Interoperability for Microwave Access (Wimax) system, power control is performed for Burst (Burst) power. The embodiments of the present invention have very obvious effects in systems that employ frequency division multiplexing.
As shown in fig. 1, an embodiment of the present invention provides a power control method, which includes a UE receiving a broadcast message sent by a base station (step 110), where the broadcast message includes first indication information used for indicating a first power offset, where the first power offset is a downlink power offset shared by the UE and other UEs in a cell where the UE is located, for example, the first power offset is a downlink power offset configured by the base station for all or part of UEs in the cell where the UE is located. Optionally, the UE determines the power of the downlink signal sent by the base station according to the pilot power and the first power offset (step 120), for example, the sum of the pilot power and the first power offset is determined as the downlink power of the base station. The invention is not limited to the addition operation by taking the pilot power and the first power offset as parameters, and can also take the pilot power and the first power offset as parameters to carry out other types of operation, and determine the obtained operation result as the downlink power of the base station. Optionally, the pilot power is saved by the UE, or is sent to the UE by the base station, for example, carried in the broadcast message.
By applying the embodiment, the UE can timely acquire the first power offset and determine the PDSCH power of the base station, so that the UE can receive PDSCH signals according to the determined PDSCH power. For a cell under the control of the base station, all or part of the UEs in the cell may determine the PDSCH power of the base station by applying the method provided in this embodiment, without the need for the base station to send dedicated signaling to each UE so that each UE knows the power offset for determining the PDSCH power, thereby saving air interface resources.
As shown in fig. 2, another embodiment of the present invention provides a power control method, including the steps of:
210. the UE receives a broadcast message sent by the base station, where the broadcast message includes first indication information, and the first indication information indicates a first power offset, that is, a PDSCH power offset shared by the UE and other UEs in a cell where the UE is located, for example, a PDSCH power offset configured by the base station for all or part of UEs in the cell where the UE is located.
In this embodiment, it may be defined that one information element in the broadcast message sent by the base station carries the first indication information. For the convenience of description, the cell is defined as PA in this embodimentNom。
Optionally, the UE reads the PA in the broadcast messageNomCells, and will PANomThe value of the cell is determined as the first power offset. Suppose a PA received by a UENomThe value of the cell is [ -6, 6]The UE may determine the first power offset to be a in db for any value of a.
Optionally, the UE reads the PA in the broadcast messageNomCells, and will PANomThe value of the cell is used as an index of the first power offset. UE may be according to PANomThe value of the cell is looked up in the first list to determine the first power offset. Assume that the first list maintained by the UE (e.g., the storage unit of the UE) is PANomThe corresponding relation between the cell value and the first power offset, the first power offset determined by the UE is PA in the broadcast message received by the UE in the first listNomThe cell takes a corresponding value. For example, the first list is shown in Table 1 below, the PAs received by the UENomIf the cell value is 1, the UE determines that the first power offset is-5, and the unit is db.
TABLE 1
| PANomValue of cell | First of allPower biasing |
| 0 | -8 |
| 1 | -5 |
| 2 | -3 |
| 3 | 0 |
| … | … |
In this embodiment, the PA in the broadcast messageNomThe type of the cell does not affect the implementation of the control method in this embodiment, and may be, for example, enumeration type or integer type, and the PANomThe relationship between the value of the cell and the first power offset is not limited to the above example.
220. And the UE determines the PDSCH power of the base station according to the pilot power and the first power offset.
For example, the UE determines the sum of the pilot power and the first power offset as the PDSCH power of the base station. Of course, the PDSCH power of the base station may be determined by other algorithms besides addition according to the pilot power and the first power offset, which is not limited herein.
The pilot power may be carried by the broadcast message received by the UE in step 210, or may be stored in a storage unit of the UE itself, for example, the UE receives a message (such as a broadcast message) sent by the base station before step 210 and carries the pilot power, and the UE stores the pilot power in the storage unit of the UE itself.
In this embodiment, the UE may obtain the first power offset in time and determine the PDSCH power of the base station, so as to receive the PDSCH signal according to the determined PDSCH power. For a cell under the control of a base station, all or part of UEs in the cell may determine the PDSCH power of the base station through the embodiment and receive PDSCH signals, without the need for the base station to send dedicated signaling to each UE so that each UE knows the power offset for determining the PDSCH power, thereby saving air interface resources.
Another embodiment of the present invention is similar to the above-described embodiment except that the UE further receives second indication information indicating a second power offset before step 210 or after step 220.
In this embodiment, if the UE further receives second indication information indicating a second power offset before step 210, in step 220, the UE determining the PDSCH power of the base station according to the pilot power and the first power offset includes: and the UE determines the PDSCH power of the base station according to the pilot power, the first power offset and the second power offset. For example, if the base station needs to further adjust the PDSCH power configured for all or part of UEs in the cell where the UEs are located, the base station notifies the first power offset to the UEs involved in further adjusting the PDSCH power through a broadcast message without sending the dedicated signaling to each UE involved in adjusting the PDSCH power one by one, thereby saving air interface resources.
In this embodiment, if after step 220, the UE further receives second indication information indicating a second power offset, the PDSCH power of the base station may be determined according to the pilot power, the first power offset and the second power offset, and the PDSCH signal may be received according to the determined PDSCH power. For a cell under the control of a base station, the base station informs all or part of UEs in the cell of a first power offset through a broadcast message, if the PDSCH power configured for a certain UE needs to be further adjusted, the UE is informed of a second power offset through a special signaling, so that when the base station adjusts the PDSCH power configured for the certain UE or the UE, the special signaling is sent to the UE or the UEs, other UEs still determine the PDSCH power according to the first power offset and the pilot frequency power informed by the broadcast message, and the base station is not required to send the special signaling to each UE so that each UE can know the power offset for determining the PDSCH power, thereby saving air interface resources.
Optionally, the determining, by the UE, the PDSCH power of the base station according to the pilot power, the first power offset, and the second power offset includes: the UE determines a sum of the pilot power, the first power offset, and the second power offset as a PDSCH power of the base station. Of course, the PDSCH power of the base station may also be determined by other algorithms besides addition according to the pilot power, the first power offset and the second power offset, which is not limited in the present invention.
In this embodiment, the second power offset is a dedicated power offset of the UE, for example, a PDSCH power offset configured by the base station for the UE, and the second power offset is a proprietary parameter when the UE determines the PDSCH power of the base station, and is not shared by other UEs in the cell where the UE is located. The second indication is used to indicate a second power offset, and is sent to the UE by the base station through a dedicated signaling, for example, the dedicated signaling is an RRC configuration message or an RRC reconfiguration message, and the second indication information is PA in the RRC configuration message or the RRC reconfiguration messageUEAnd carrying the cell.
Optionally, the UE determines the value of the PAUE cell as the second power offset. Or, mixing PAUEThe value of the cell is used as the index of the second power offset, and the UE can be according to the PAUEThe value of the cell is looked up in the second list to determine the second power offset. Assume that the second list maintained by the UE (e.g., the storage unit of the UE) is PAUEThe corresponding relation between the cell value and the second power offset, the second power offset determined by the UE is the PA received by the UE in the second listUEThe cell takes a corresponding value. For example, the second list is shown in Table 2 below, the PA received by the UEUEIf the cell value is 6, the UE determines the second cellThe power bias is 2 in db.
TABLE 2
| PAUEValue of cell | Second power bias |
| 0 | -6 |
| 1 | -4.77 |
| 2 | -3 |
| 3 | -1.77 |
| 4 | 0 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
By applying the embodiment, the UE may obtain the first power offset, the second power offset, and the pilot power of the base station, thereby determining the PDSCH power of the base station, and receiving the PDSCH signal according to the determined PDSCH power. For the base station, if the PDSCH power configured for the UE is adjusted, the UE can be notified in time, and no waste of air interface resources is caused.
As shown in fig. 3, another embodiment of the present invention provides a power control method, including the steps of:
310. the base station configures a PDSCH power offset for all or part of UEs in a cell (hereinafter referred to as a first cell) controlled by the base station.
320. The base station transmits a broadcast message, wherein the broadcast message comprises pilot power of the base station and first indication information, and the first indication information is used for indicating the PDSCH power offset.
In this embodiment, the PDSCH power offset configured by the base station may be the first power offset in the above embodiments, and the usage and implementation thereof and the like may refer to the above embodiments, which are not described herein again.
In this embodiment, the base station may preset a first power offset, or configure a PDSCH power offset for a certain UE according to the existing method, and send the PDSCH power offset as the first power offset to all or part of UEs in the first cell through a broadcast message, so that the UEs determine the PDSCH power of the base station according to the first power offset and the pilot power. The base station may also determine the PDSCH power offset by any other method, and use the determined PDSCH power offset as the first power offset in this embodiment, which is not limited herein.
Another embodiment of the present invention provides a method of adjusting a first power bias.
In this embodiment, as shown in step 410a to step 420a of fig. 4a, when the base station determines that the load of the first cell controlled by the base station is light (e.g. the load is lower than the threshold a), the base station decreases the first power offset. For example, the first power offset configured by the base station is smaller than the first power offset configured last time by the base station, and the adjusted first power offset is notified to all or part of UEs in the first cell, so that the UEs know that the PDSCH power is to be reduced by the base station, and determine the PDSCH power configured by the base station according to the received first power offset. When the load of the base station in the first cell is light, the interference of the first cell to the adjacent cell can be reduced by reducing the PDSCH power, so that the effect of interference coordination of the adjacent cell is achieved, the power consumption of the base station is reduced, and the effects of energy conservation and emission reduction are achieved. Optionally, the base station sends a broadcast message, where a first power offset indicated by first indication information in the broadcast message is smaller than a first power offset indicated by first indication information in a broadcast message sent by the base station last time, so that the base station quickly reduces PDSCH power for all or part of UEs in the first cell, thereby quickly reducing interference to the neighboring cell.
In this embodiment, as shown in step 410B to step 420B of fig. 4B, when the base station determines that the load of the first cell controlled by the base station is heavy (for example, the load is higher than the threshold B, which may be larger than the threshold a), the base station increases the first power offset. For example, the first power offset configured by the base station is greater than the first power offset configured last time by the base station, and the adjusted first power offset is notified to all or part of UEs in the first cell, so that the UEs know that the PDSCH power is to be increased by the base station, and determine the PDSCH power configured by the base station based on the received first power offset. When the load of the base station in the first cell is heavy, the transmission flow of the UE and the anti-interference capability of the UE can be improved by improving the PDSCH power, and the throughput of the first cell is increased. Optionally, the base station sends a broadcast message, where a first power offset indicated by first indication information in the broadcast message is greater than a first power offset indicated by first indication information in a broadcast message sent last by the base station, so that the base station quickly increases PDSCH power for all or part of UEs in the first cell, thereby quickly increasing the capacity of the first cell.
This embodiment can be combined with the other embodiments described above, and will not be described herein again.
The base station in this embodiment may quickly adjust PDSCH number power configured for all or part of UEs in the cell controlled by the base station and the power offset sent to the UEs, thereby avoiding severe consumption of air interface resources and not affecting coverage of the cell controlled by the base station.
As shown in fig. 5, another embodiment of the present invention also provides an apparatus 500, and the apparatus 500 may include a receiving unit 510 and a processing unit 520. The receiving unit 510 is configured to receive a broadcast message sent by a first device, where the broadcast message includes first indication information, and the first indication information is used to indicate a first power offset, where the first power offset is a downlink power offset shared by the device 500 and another device in a cell where the device 500 is located. The processing unit 520 is configured to determine the power of the downlink signal transmitted by the first device according to the pilot power and the first power offset, for example, determine the sum of the pilot power and the first power offset as the power of the downlink signal transmitted by the first device.
Optionally, the receiving unit is further configured to receive second indication information sent by the first device, where the second indication information is used to indicate a second power offset, and the second power offset is a dedicated downlink power offset of the device 500. The processing unit is further configured to determine a power of a downlink signal transmitted by the first device according to the pilot power, the first power offset, and the second power offset. For example, the sum of the pilot power, the first power offset and the second power offset is determined as the power of the downlink signal transmitted by the first device.
Optionally, the value of the first indication information is a value of a first power offset, and the processing unit 520 is further configured to determine the first power offset from the value of the first indication information received by the receiving unit 510. Optionally, the value of the first indication information is an index of a first power offset, and the processing unit 520 is further configured to determine the first power offset according to a relationship between the index of the first power offset and the value of the first indication information. Wherein the relationship of the index of the first power offset and the first power offset may be stored in a storage unit 530 (not shown in fig. 5) of the device 500.
Optionally, the receiving unit 510 is further configured to receive an RRC configuration message or an RRC reconfiguration message that is sent by the first device and carries the second indication information. Optionally, the value of the second indication information is a value of a second power offset, and the processing unit 520 is further configured to determine the second power offset according to the value of the second indication information. Or, the value of the second indication information is an index of a second power offset, and the processing unit 520 is further configured to determine the second power offset according to a relationship between the index of the second power offset and the value of the second indication information. Wherein the relationship between the index of the second power offset and the second power offset may be stored in the storage unit 530 of the device 500.
Optionally, the receiving unit 510 is further configured to receive pilot power of the first device. The storage unit 530 is further configured to store the pilot power of the first device.
The present embodiment may be applied to various communication systems, and the downlink signal power in the present embodiment may be one of PDSCH power, HS-PDSCH power, forward traffic channel power, or Burst power. The first device in this embodiment may be a device that sends a downlink signal, such as a base station, an evolved node base, an access point, a relay device, a home base station, or a home evolved node base.
The device 500 provided in this embodiment may be a UE, for example, a receiving device of a downlink signal of a mobile phone, various mobile terminals, or a fixed terminal, and may also be used to implement actions performed by the UE in the power control method provided in the foregoing embodiment of the present invention, which is not described herein again.
As shown in fig. 6, another embodiment of the present invention also provides an apparatus 600, which includes a configuration unit 610 and a sending unit 620. The configuration unit 610 is configured to configure a first power offset for all or a part of second devices in a cell controlled by the device 600, and the sending unit 620 is configured to send a broadcast message to the second devices, where the broadcast message includes pilot power of the device 600 and first indication information, and the first indication information is used to indicate the first power offset, so that the second devices determine downlink power of the device 600 according to the pilot power and the first indication information.
Optionally, the value of the first indication information is a value of a first power offset, or the value of the first indication information is an index of the first power offset, and the index of the first power offset and the first power offset have a corresponding relationship. Wherein the correspondence of the index of the first power offset and the first power offset may be saved in a storage unit 630 (not shown in fig. 6) of the device 600.
Optionally, the configuring unit 610 is further configured to decrease the first power bias when it is determined that the load of the cell controlled by the apparatus 600 is lower than the first threshold.
Optionally, the configuration unit 610 is further configured to increase the first power bias when it is determined that the load of the cell controlled by the apparatus 600 is higher than the second threshold.
Optionally, the sending unit 620 is further configured to send an RRC configuration message or an RRC reconfiguration message that carries second indication information, where the second indication information is used to indicate a second power offset, and the second power offset is a downlink power offset configured by the device 600 for a second device that is used to receive the second indication information.
Optionally, the value of the second indication information is a value of a second power offset, or the value of the second indication information is an index of the second power offset, and the index of the first power offset and the second power offset have a corresponding relationship. Wherein the correspondence between the index of the second power offset and the second power offset may be stored in the storage unit 630 of the device 600.
The present embodiment can be applied to various communication systems. The power of the downlink signal in this embodiment may be one of PDSCH power, HS-PDSCH power, forward traffic channel power, or Burst power. The second device in this embodiment may be a UE, for example, a receiving device of a downlink signal such as a mobile phone, various mobile terminals, or a fixed terminal.
The device 600 provided in this embodiment may be a base station, an access point, a relay device, a home base station, or a home evolved node b, and may also be used to implement actions performed by the base station in the power control method provided in the foregoing embodiment of the present invention, and details are not described here again.
Another embodiment of the present invention provides a communication system including a first device and a second device. The second device determines the PDSCH power of the first device according to the pilot power and the first power offset of the first device sent by the first device through the broadcast message, and all or part of the second devices in the first cell under the control of the first device determine the power of the downlink signal sent by the first device according to the received pilot power and the first power offset of the first device. The first device may notify all or a portion of the second devices in the first cell of the first power offset through a broadcast message without sending an RRC signaling to each of the second devices, thereby saving air interface resources. The first device may perform the action performed by the base station in the power control method provided in the foregoing embodiment, and may also adopt the structure of the device 600 provided in the foregoing embodiment, and the second device may perform the action performed by the power control method UE provided in the foregoing embodiment, and may also adopt the structure of the device 500 provided in the foregoing embodiment, which is not described again here.
Those skilled in the art will appreciate that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a computer-readable storage medium, and the program may be configured to: ROM/RAM, magnetic disk, optical disk, etc.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (17)
1. A method of power control, comprising:
the method comprises the steps that first equipment configures a first power bias for all or part of second equipment in a cell controlled by the first equipment;
the first device sends a broadcast message, where the broadcast message includes pilot power of the first device and first indication information for indicating the first power offset, so that the second device determines downlink power of the first device according to the pilot information and the first indication information.
2. The method of claim 1, further comprising:
the first device reduces the first power bias when the first device determines that a load of a cell controlled by the first device is below a first threshold.
3. The method of claim 1, further comprising:
the first device increases the first power bias when the first device determines that a load of a cell controlled by the first device is above a second threshold.
4. An apparatus, comprising:
a configuration unit, configured to configure a first power offset for all or part of second devices in a cell controlled by the device;
a sending unit, configured to send a broadcast message to the second device, where the broadcast message includes a pilot power of the device and first indication information used for indicating the first power offset, so that the second device determines a downlink power of the device according to the pilot power and the first indication information.
5. The apparatus of claim 4,
the configuration unit is further configured to reduce the first power bias when it is determined that the load of the cell controlled by the device is below a first threshold.
6. The apparatus of claim 4,
the configuration unit is further configured to increase the first power bias upon determining that a load of a cell controlled by the device is above a second threshold.
7. A method of power control, comprising:
the method comprises the steps that a second device receives a broadcast message sent by a first device, wherein the broadcast message comprises first indication information, the first indication information is used for indicating a first power offset, and the first power offset is a downlink power offset shared by the second device and other second devices in a cell where the second device is located;
and the second equipment determines the power of the downlink signal sent by the first equipment according to the pilot power and the first power offset.
8. The method of claim 7, wherein the second device determining the power of the downlink signal transmitted by the first device based on the pilot power and the first power offset comprises:
and the second equipment determines the sum of the pilot power and the first power offset as the power of the downlink signal sent by the first equipment.
9. The method of claim 7, further comprising:
the second device receives a Radio Resource Control (RRC) configuration message or an RRC reconfiguration message which is sent by the first device and carries second indication information, wherein the second indication information is used for indicating a second power offset, and the second power offset is a dedicated downlink power offset of the second device.
10. The method of claim 9, wherein the second device determining the power of the downlink signal transmitted by the first device based on the pilot power and the first power offset comprises:
and the second equipment determines the sum of the pilot power, the first power offset and the second power offset as the power of the downlink signal sent by the first equipment.
11. The method of any of claims 7 to 10, wherein the pilot power is maintained by the second device or carried by a broadcast message received by the second device and sent by the first device.
12. The method of any of claims 7 to 10, further comprising:
and the second equipment receives the downlink signal sent by the first equipment according to the power of the downlink signal.
13. The method of claim 7,
the value of the first indication information is a value of a first power offset, and after the second device receives the broadcast message sent by the first device, the method further includes: the second device determines the value of the first indication information as a first power offset; or,
the value of the first indication information is an index of a first power offset, and after the second device receives a broadcast message sent by the first device, the method further includes: and the second equipment determines the first power offset according to the relation between the index of the first power offset and the value of the first indication information.
14. An apparatus, comprising:
a receiving unit, configured to receive a broadcast message sent by a first device, where the broadcast message includes first indication information, and the first indication information is used to indicate a first power offset, where the first power offset is a downlink power offset shared by the device and another device in a cell where the device is located; and
and the processing unit is used for determining the power of the downlink signal sent by the first equipment according to the pilot power and the first power offset.
15. The apparatus of claim 14,
the receiving unit is further configured to receive second indication information sent by the first device, where the second indication information is used to indicate a second power offset, and the second power offset is a dedicated downlink power offset of the device;
the processing unit is further configured to determine a power of a downlink signal transmitted by the first device according to a pilot power, the first power offset, and the second power offset.
16. The device of claim 14 or 15, wherein the processing unit is further configured to receive the downlink signal transmitted by the first device according to the power of the downlink signal.
17. The apparatus of claim 14 or 15, wherein the receiving unit is further configured to receive the pilot power.
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| CN2010106169087A CN102131272A (en) | 2010-12-31 | 2010-12-31 | Power control method and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106169087A CN102131272A (en) | 2010-12-31 | 2010-12-31 | Power control method and equipment |
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| CN102131272A true CN102131272A (en) | 2011-07-20 |
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Application publication date: 20110720 |