CN107006064A

CN107006064A - A kind of trunking system of selection, equipment and system

Info

Publication number: CN107006064A
Application number: CN201580065494.4A
Authority: CN
Inventors: 黎超; 张兴炜
Original assignee: Huawei Technologies Co Ltd
Current assignee: Xuzhou Bochuang Construction Development Group Co.,Ltd.
Priority date: 2015-07-20
Filing date: 2015-07-20
Publication date: 2017-08-01
Anticipated expiration: 2035-07-20
Also published as: WO2017011978A1; CN107006064B

Abstract

The embodiment of the invention discloses a kind of trunking system of selection, equipment and system, it is related to communication technical field, realizes selection and the trunking of UE equities.The trunking system of selection that the present invention is provided includes：First user equipment (UE) obtains the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；Wherein, transmission power information is：2nd UE send the first channel and second channel between transmission power information, or the 2nd UE send the first channel transmission power information；First UE determines the first UE trunking according to the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information from N number of 2nd UE.

Description

A kind of trunking system of selection, equipment and system

Technical field

The present invention relates to communication technical field, more particularly to a kind of trunking system of selection, equipment and system.

Background technology

3rd generation partner program (3^rdGeneration Patnership Project, 3GPP) Relay technologies were once standardized in version 10 (Release 10, Rel-10), the scene standardized at that time is as follows：Via node (Relay Node, RN) it is independent network element in a Rel-10, its rank in a network is than user equipment (User Equpment, UE it is) high, RN has two kinds of abilities, a kind of ability be as common evolved node B (Evolvd Node, eNB) equally, can with UE carry out cellular link communication；Another ability is with the backhaul transport link communicated with eNB.

Obviously, RN nodes specified in existing 3GPP Rel-10 are not need selection, it directly with network eNB direct communications, it is the equal of a small base station, also can directly and UE communication, automatically by the cellular link opened with eNB back haul link and with UE communication after its upper electricity, it is possible to realize relay function.But, RN specified in existing 3GPP Rel-10 is not the network element with UE equities, i.e. prior art does not support that trunking and UE are the scenes of peer device, now, trunking is made if necessary to a common UE, the problem of then facing a via node how selected with UE equities, but prior art does not have corresponding solution.

The content of the invention

Embodiments of the invention provide a kind of trunking system of selection, equipment and system, realize selection and the trunking of UE equities.

To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：

In a first aspect, the embodiment of the present invention provides a kind of trunking system of selection, methods described includes：

First user equipment (UE) obtains N number of second user equipment UE and the first UE Between link quality information and N number of 2nd UE transmission power information；Wherein, the N is the integer more than or equal to 1；The transmission power information of 2nd UE is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

First UE determines the trunking of the first UE according to link quality information and N number of 2nd UE transmission power information between N number of 2nd UE and the first UE from N number of 2nd UE；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the first UE and the 2nd UE is found；The data transfer that the second channel that 2nd UE is sent is used between the first UE and the 2nd UE；Link quality information between 2nd UE and the first UE is that the first UE is obtained by first channel.

The first in first aspect can realize mode, with reference in a first aspect,

The transmission power information for the first channel that 2nd UE is sent is used for the transmission power level for determining first channel, and the transmission power level of first channel is：

The specific transmission power levels of UE, wherein, the specific transmission power levels of UE refer to：The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different；Or,

The specific transmission power level of cell, wherein, the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the 2nd UE in different districts group is different.

In mode can be achieved second of first aspect, with reference in a first aspect,

The transmission power deviation information is used to determine the transmission power deviation between the first channel of the 2nd UE transmissions and the second channel of the 2nd UE transmissions, and the transmission power deviation is：

The specific transmission power deviations of UE, wherein, the UE specifically launches transmission power deviation and referred to：The first channel that the 2nd UE of difference is sent is different from the transmitting transmission power deviation between second channel, or the first channel in different groups of the 2nd UE transmissions is different from the transmitting transmission power deviation between second channel；Or,

Cell specifically launches transmission power deviation, wherein, the cell is specifically launched transmission power deviation and referred to：The first channel that the 2nd UE in different districts is sent is different from the transmitting transmission power deviation between second channel, or the first channel of the transmissions of the 2nd UE in different districts group from the transmitting transmission power deviation between second channel is different；Or,

The transmitting transmission power deviation associated with the transmission mode of the second channel.

The third in first aspect can realize mode, with reference in a first aspect,

The transmitting transmission power information that first UE obtains the 2nd UE is specifically included：

First UE obtains the transmitting transmission power information by the serving BS of the first UE；

Or, the first UE obtains the transmitting transmission power information by the 2nd UE；

Or, the first UE obtains the transmitting transmission power information by the first UE and/or the 2nd UE reference synchronization source.

In the 4th kind of achievable mode of first aspect, the third with reference to first aspect can realize mode,

First UE obtains the transmitting transmission power information by the 2nd UE and specifically included：

First UE obtains the transmitting transmission power information by the 2nd UE the first channels sent.

In the 5th kind of achievable mode of first aspect, with reference to the 4th kind of achievable mode of first aspect,

The first channel that first UE is sent by the 2nd UE obtains the transmitting transmission power information and specifically includes following at least one mode：

First UE obtains the transmitting transmission power information by the information of first channel bearing；

The CRC CRC masks that use obtain the transmission power information when first UE sends first channel by the 2nd UE；

The demodulated reference signal DMRS that uses obtains the transmission power information when first UE sends first channel by the 2nd UE；

The resource location information that uses obtains the transmission power information when first UE sends first channel by the 2nd UE.

In the 6th kind of achievable mode of first aspect, the third with reference to first aspect can realize mode,

First UE obtains the transmission power information by the first UE and/or the 2nd UE reference synchronization source to be included：

The 3rd channel that first UE is sent by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information；3rd channel is：The channel that the first UE and/or the reference synchronization source of the 2nd UE that first UE is received are sent；

Or, the synchronizing sequence that the first UE is sent by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information.

In the 7th kind of achievable mode of first aspect, with reference to the 6th kind of achievable mode of first aspect,

The 3rd channel that first UE is sent by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information and specifically includes following at least one mode：

First UE obtains the transmission power information by the information of the 3rd channel bearing；

CRC CRC masks that first UE is used when sending three channel by the first UE and/or the 2nd UE reference synchronization source obtain the transmission power information；

Demodulated reference signal DMRS that first UE is used when sending three channel by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information；

Resource location information that first UE is used when sending three channel by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power Information.

In the 8th kind of achievable mode of first aspect, mode can be achieved in any of the 7th kind of achievable mode with reference to first aspect to first aspect, after the first UE obtains the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information, methods described also includes：

First UE sends the Link Quality Reports by cellular link to the base station；

Or, the first UE sends the Link Quality Reports by the first UE to the repeated link of the base station to the base station.

In the 9th kind of achievable mode of first aspect, with reference to the 8th kind of achievable mode of first aspect,

The Link Quality Reports specifically include following at least one information：

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

The link quality information of second channel between N number of 2nd UE and the first UE.

Second aspect, the embodiment of the present invention provides a kind of trunking system of selection, and methods described includes：

Base station obtains the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；Wherein, the N is the integer more than or equal to 1；The transmission power information of 2nd UE is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

The base station determines the trunking of the first UE according to link quality information and N number of 2nd UE transmission power information between N number of second user equipment UE and the first UE from N number of 2nd UE；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the first UE and the 2nd UE is found；The data transfer that the second channel that 2nd UE is sent is used between the first UE and the 2nd UE；2nd UE and the first UE By link quality information be that the first UE is obtained by first channel.

The first in second aspect can realize mode, with reference to second aspect,

In second of achievable mode of second aspect, with reference to second aspect,

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：The first channel that the 2nd UE of difference is sent is different from the transmission power deviation between second channel, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel；Or,

The specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the 2nd UE in different districts group are different from the transmission power deviation between second channel；Or,

The transmission power deviation associated with the transmission mode of the second channel.

The third in second aspect can realize mode, with reference to second aspect,

The transmission power information that the base station is obtained between the first channel and the described second second channel sent of the 2nd UE transmissions is specifically included：

By way of signaling between base station the transmission power information is obtained from the serving BS of the 2nd UE；Or,

The transmission power information is read from server；Or,

From server be configured to the storage of the base station in obtain the transmission power information.

In the 4th kind of achievable mode of second aspect, the third with reference to second aspect to second aspect can realize that mode can be achieved in any of mode,

Obtained in base station before the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information, methods described also includes：

The base station receives the Link Quality Reports that the first UE is sent by cellular link；

Or, the base station receives the Link Quality Reports that the first UE is sent by the first UE to base station repeated link.

In the 5th kind of achievable mode of second aspect, with reference to the 4th kind of achievable mode of second aspect,

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

The third aspect, the embodiment of the present invention provides a kind of trunking system of selection, and methods described includes：

Second user equipment UE sends transmission power information, and the transmission power information is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

The second user equipment UE receives confirmation, wherein, the confirmation is used to indicate that the 2nd UE turns into trunking；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the 2nd UE and the first UE finds that the first UE is the UE for receiving the transmission power information；The second channel that 2nd UE is sent is used between the first UE and the 2nd UE Data transfer.

The first in the third aspect can realize mode, with reference to the third aspect,

Before second user equipment UE sends transmission power information, methods described also includes：

2nd UE receives the signal quality threshold information of base station configuration；

2nd UE is according to the signal quality threshold information, and the signal quality for detecting the signal that the 2nd UE is received meets preset rules.

In second of achievable mode of the third aspect, the first with reference to the third aspect or the third aspect can realize mode,

The second user equipment UE, which receives confirmation, to be included：

2nd UE receives the confirmation that the serving BS or the first UE of the 2nd UE are sent.

The third in the third aspect can realize mode, can be achieved any of mode second mode can be achieved with reference to the third aspect to the third aspect,

In the 4th kind of achievable mode of the third aspect, the third with reference to the third aspect to the third aspect can realize that mode can be achieved in any of mode,

The specific transmission power deviations of UE, wherein, the specific transmission powers of UE Deviation refers to：The first channel that the 2nd UE of difference is sent is different from the transmission power deviation between second channel, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel；Or,

In the 5th kind of achievable mode of the third aspect, with reference to the third aspect,

2nd UE sends transmission power information and specifically included：

2nd UE sends the transmission power information by the serving BS of the 2nd UE；

Or, the 2nd UE sends the transmission power information by first channel.

In the 6th kind of achievable mode of the third aspect, with reference to the 5th kind of achievable mode of the third aspect,

2nd UE sends the transmission power information by first channel and specifically includes following at least one mode：

2nd UE sends the transmission power information by the information of first channel bearing；

Or, CRC CRC masks that the 2nd UE is used by first channel send the transmission power information；

Or, demodulated reference signal DMRS that the 2nd UE is used by first channel sends the transmission power information；

Or, resource location information that the 2nd UE is used by first channel sends the transmission power information.

Fourth aspect, the embodiment of the present invention provides a kind of user equipment (UE), including：

Acquiring unit, for obtaining the link quality information between N number of second user equipment UE and the UE and N number of 2nd UE transmission power information；Wherein, it is described N is the integer more than or equal to 1；The transmission power information of 2nd UE is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

Determining unit, for the link quality information and N number of 2nd UE transmission power information between the N number of 2nd UE and UE for being got according to the acquiring unit, determines the trunking of the UE from N number of 2nd UE；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the UE and the 2nd UE is found；The data transfer that the second channel that 2nd UE is sent is used between the UE and the 2nd UE；Link quality information between 2nd UE and UE is that the UE is obtained by first channel.

The first in fourth aspect can realize mode, with reference to fourth aspect,

In second of achievable mode of fourth aspect, with reference to fourth aspect,

The specific transmission power deviation of cell, wherein, the cell specifically launches work( Rate deviation refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the 2nd UE in different districts group are different from the transmission power deviation between second channel；Or,

The third in fourth aspect can realize mode, with reference to fourth aspect,

The acquiring unit specifically for：

The transmission power information is obtained by the serving BS of the UE；

Or, the transmission power information is obtained by the 2nd UE；

Or, the transmission power information is obtained by the UE and/or the 2nd UE reference synchronization source.

In the 4th kind of achievable mode of fourth aspect, the third with reference to fourth aspect can realize mode,

The acquiring unit specifically for：

The transmission power information is obtained by the 2nd UE the first channels sent.

In the 5th kind of achievable mode of fourth aspect, with reference to the 4th kind of achievable mode of fourth aspect,

The acquiring unit by following at least one mode specifically for obtaining the transmission power information：

The transmission power information is obtained by the information of first channel bearing；

The CRC CRC masks that use obtain the transmission power information when sending first channel by the 2nd UE；

The demodulated reference signal DMRS that uses obtains the transmission power information when sending first channel by the 2nd UE；

The resource location information that uses obtains the transmission power information when sending first channel by the 2nd UE.

In the 6th kind of achievable mode of fourth aspect, the third with reference to fourth aspect can realize mode,

The acquiring unit specifically for：

The 3rd channel sent by the UE and/or the 2nd UE reference synchronization source Obtain the transmission power information；3rd channel is：The channel that the UE and/or the reference synchronization source of the 2nd UE that the UE is received are sent；

The synchronizing sequence sent by UE and/or the 2nd UE reference synchronization source obtains the transmission power information.

In the 7th kind of achievable mode of fourth aspect, with reference to the 6th kind of achievable mode of fourth aspect,

The transmission power information is obtained by the information of the 3rd channel bearing；

The CRC CRC masks that are used when sending three channel by the UE and/or the 2nd UE reference synchronization source obtain the transmission power information；

The demodulated reference signal DMRS that is used when sending three channel by the UE and/or the 2nd UE reference synchronization source obtains the transmission power information；

The resource location information that is used when sending three channel by the UE and/or the 2nd UE reference synchronization source obtains the transmission power information.

In the 8th kind of achievable mode of fourth aspect, mode can be achieved with reference to any of the 7th kind of achievable mode of fourth aspect to fourth aspect, the UE also includes：

Transmitting element, after the link quality information and N number of 2nd UE transmission power information between N number of 2nd UE and UE of acquiring unit acquisition, the Link Quality Reports are sent by cellular link to the base station；

Or, the Link Quality Reports are sent to the base station by the UE to base station repeated link.

In the 9th kind of achievable mode of fourth aspect, with reference to the 8th kind of achievable mode of fourth aspect,

Link quality information between N number of 2nd UE and UE；

N number of 2nd UE transmission power information；

The link quality information of second channel between the N number of 2nd UE and UE.

5th aspect, the embodiment of the present invention provides a kind of base station, including：

Acquiring unit, for obtaining the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；Wherein, the N is the integer more than or equal to 1；The transmission power information of 2nd UE is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

Determining unit, for the link quality information and N number of 2nd UE transmission power information between the N number of second user equipment UE got according to the acquiring unit and the first UE, the trunking of the first UE is determined from N number of 2nd UE；

In the first in terms of the 5th can realize mode, with reference to the 5th aspect,

In second of achievable mode of the 5th aspect, with reference to the 5th aspect,

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：Transmitting work(between the first channel and second channel that the 2nd UE of difference is sent Rate deviation is different, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel；Or,

The third at the 5th aspect can realize mode, with reference to the 5th aspect,

The acquiring unit specifically for：

The transmission power information is read from server；Or,

In the 4th kind of achievable mode of the 5th aspect, the third with reference to the 5th aspect to the 5th aspect can realize that mode can be achieved in any of mode,

The base station also includes：

Receiving unit, for getting the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information in acquiring unit before, receive the Link Quality Reports that the first UE is sent by cellular link；

Or, receive the Link Quality Reports that the first UE is sent by the first UE to base station repeated link.

In the 5th kind of achievable mode of the 5th aspect, with reference to the 4th kind of achievable mode of the 5th aspect,

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

6th aspect, the embodiment of the present invention provides a kind of user equipment (UE), including：

Transmitting element, for sending transmission power information, the transmission power information is：Transmission power deviation information between the second channel that the first channel and the UE that the UE is sent are sent, or the transmission power information of the first channel that the UE is sent；

Receiving unit, for receiving confirmation, wherein, the confirmation is used to indicate that the UE turns into trunking；

Wherein, the equipment that the first channel that the UE is sent is used between the UE and the first UE finds that the first UE is the UE for receiving the transmission power information；The data transfer that the second channel that the UE is sent is used between the first UE and UE.

In the first in terms of the 6th can realize mode, with reference to the 6th aspect,

The receiving unit, is additionally operable to before second user equipment UE sends transmission power information, receives the signal quality threshold information of base station configuration；

The UE also includes：

Detection unit, for according to the signal quality threshold information, the signal quality for detecting the signal that the UE is received to meet preset rules.

In second of achievable mode of the 6th aspect, the first with reference to the 6th aspect or the 6th aspect can realize mode,

The receiving unit, specifically for：

Receive the confirmation that the serving BS or the first UE of the UE are sent.

The third at the 6th aspect can realize mode, any of mode can be achieved to second of the 6th aspect with reference to the 6th aspect mode can be achieved,

The transmission power information for the first channel that the UE is sent is used for the transmission power level for determining first channel, and the transmission power level of first channel is：

The specific transmission power levels of UE, wherein, the specific transmission power levels of UE refer to：The transmission power level for the first channel that different UE are sent is different, or the transmission power level in different groups of UE the first channels sent is different；Or,

The specific transmission power level of cell, wherein, the specific transmission power level of cell refers to：The transmission power level for the first channel that UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the UE in different districts group is different 's.

In the 4th kind of achievable mode of the 6th aspect, the third with reference to the 6th aspect to the 6th aspect can realize that mode can be achieved in any of mode,

The transmission power deviation information is used to determine the transmission power deviation between the first channel of the UE transmissions and the second channel of UE transmissions, and the transmission power deviation is：

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：The first channel that different UE are sent is different from the transmission power deviation between second channel, or the first channel in different groups of UE transmissions is different from the transmission power deviation between second channel；Or,

The specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the UE in different districts group are different from the transmission power deviation between second channel；Or,

In the 5th kind of achievable mode of the 6th aspect, with reference to the 6th aspect,

The transmitting element, specifically for：

The transmission power information is sent by the serving BS of the UE；

Or, the transmission power information is sent by first channel.

In the 6th kind of achievable mode of the 6th aspect, with reference to the 5th kind of achievable mode of the 6th aspect,

The transmitting element, the transmission power information is sent especially by following at least one mode：

The transmission power information is sent by the information of first channel bearing；

Or, the CRC CRC masks that are used by first channel send the transmission power information；

Or, the demodulated reference signal DMRS that is used by first channel sends the transmission power information；

Or, the resource location information that is used by first channel sends the hair Penetrate power information.

From the foregoing, it will be observed that the embodiment of the present invention provides a kind of trunking system of selection, equipment and system, the first user equipment (UE) obtains the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；The transmission power information of link quality information and N number of 2nd UE between N number of 2nd UE and the first UE that are got according to the acquiring unit, determines the trunking of the first UE from N number of 2nd UE.In this way, realizing the selection of peer-to-peer relay equipment by the first UE, solve and the problem of selection peer device is as trunking is not present in the prior art.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.

The schematic diagram for the application scenarios that Fig. 1 provides for the present invention；

The schematic diagram for the application scenarios that Fig. 2 provides for the present invention；

Fig. 3 is a kind of flow chart of trunking system of selection provided in an embodiment of the present invention；

The schematic diagram of the information for the first channel bearing that Fig. 4 provides for the present invention；

Fig. 5 is a kind of flow chart of trunking system of selection provided in an embodiment of the present invention；

Fig. 6 is a kind of flow chart of trunking system of selection provided in an embodiment of the present invention；

Fig. 7 is a kind of structure chart of user equipment (UE) provided in an embodiment of the present invention；

Fig. 7 A are a kind of structure chart of user equipment (UE) provided in an embodiment of the present invention；

Fig. 8 is a kind of structure chart of base station provided in an embodiment of the present invention；

Fig. 8 A are a kind of structure chart of base station provided in an embodiment of the present invention；

Fig. 9 is the structure chart of another user equipment (UE) provided in an embodiment of the present invention；

Fig. 9 A are the structure chart of another user equipment (UE) provided in an embodiment of the present invention；

Figure 10 is a kind of structure chart of relay selection system provided in an embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

Here its general principles are first introduced.During practical communication, remote user equipment receives remote user equipment and the signal quality information on the channel of candidate relay equipment room first, such as Reference Signal Received Power (Reference Signal Receiving Power, RSRP), it can be expressed as：RSRP1=TxP1-PL1；Wherein, TxP1 is the transmission power on the first channel, and PL1 is the path loss (Path Loser, PL) between the candidate relay equipment that the first channel is undergone in transmission and remote user equipment.Remote user equipment receives remote user equipment and the signal quality information on candidate relay equipment room second channel and can be expressed as：RSRP2=TxP2-PL2；Wherein, TxP2 is the transmission power on second channel, and PL2 is the path loss between the candidate relay equipment that second channel is undergone in transmission and remote user equipment.The poor signal quality for two channels of the first channel and second channel that remote user equipment is received is：RSRP2-RSRP1=(TxP2-TxP1)-(PL2-PL1).

Due to for a pair of remote user equipments and candidate relay equipment, it has been generally acknowledged that the circuit loss value PL of the different channels between them is identical, such as the path loss PL1 of the first channel and the path loss PL2 of second channel are identicals, so, in the embodiment of the present invention, the path loss of second channel can be expressed as：PL2=PL1, PL1=TxP1-RSRP1, i.e., can obtain the path loss of second channel by the signal quality information of the first channel and the transmission power of the first channel.The poor signal quality of two channels of first channel and second channel is represented by：RSRP2-RSRP1=TxP2-TxP1=Δ TxP, and then the signal quality information of the poor signal quality and the first channel by the first channel and second channel can obtain the signal quality information of second channel, such as：RSRP2=RSRP1+ Δs TxP.

Given this, if obtaining the signal quality information of the first channel of multiple candidate relay equipment and the transmission power information of the first channel, the path loss of the second channel of multiple candidate relay equipment can then be obtained, so as to the path loss situation of the second channel according to multiple candidate relay equipment, suitable UE is selected from multiple candidate relay equipment as remote equipment Trunking.Or, if obtaining the poor signal quality between the signal quality information and the first channel and second channel of the first channel of multiple candidate relay equipment, the signal quality information of the second channel of multiple candidate relay equipment can then be obtained, so as to the signal quality information of the second channel according to multiple candidate relay equipment, suitable UE is selected from multiple candidate relay equipment as the trunking of remote equipment.Trunking system of selection provided in an embodiment of the present invention is introduced below by specific embodiment：

Embodiment one

Fig. 3 shows a kind of trunking system of selection provided in an embodiment of the present invention, applied to the first user equipment (User Equipment, UE), wherein, the first UE can be：When the first UE and base station (eNB) have data transfer, do not carry out data transmission with eNB directly, and the UE for needing the forwarding by trunking indirectly to carry out data transmission with base station, such as remote equipment.In the embodiment of the present invention, first UE can be located in the network coverage of base station, wireless heterogeneous networks (Radio Resource Control are directly set up with base station, RRC) connect or receive base station and send broadcast message, but when carrying out data transmission between base station, need to be forwarded by trunking, for example, as shown in Figure 1, first UE is distal end UE, in eNB2 network coverage, it can be carried out data transmission by UE21 with eNB2, be carried out data transmission by UE11 with eNB1.First UE may be located on outside the network coverage of base station, receive the signal that the user equipment in base station network coverage is sent, for example, as shown in Figure 2, first UE is distal end UE, outside eNB1 and eNB2 network coverage, the signal that UE21 and UE11 in the network coverage in eNB1 and eNB2 are sent can be received simultaneously.

As shown in figure 3, methods described may comprise steps of：

Step 101：First UE obtains the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information.

Wherein, it can be the integer more than or equal to 1 as the candidate relay UE, N of trunking before trunking determination that the 2nd UE, which can be,.It should be noted that in specific application scenarios, the UE that the signal quality received is more than predetermined threshold value can be defined as candidate relay equipment by the first UE, then will be complete in the candidate relay equipment determined Portion's equipment is used as above-mentioned N number of 2nd UE, or it regard the equipment component in the candidate relay equipment determined as N number of 2nd UE, it can take N number of equipment as the 2nd UE from the M candidate relay equipment predefined out, M can be the integer more than N, or the integer equal to N.Wherein, predetermined threshold value can have been predefined in advance, can also base station by signal deployment, contrast of the embodiment of the present invention is without limiting.

For example, as depicted in figs. 1 and 2, first UE is distal end UE, five equipment of UE20, UE21, UE22, UE10 and UE11 are defined as to distal end UE candidate relay UE first, then tri- equipment of UE22, UE21 and UE11 are selected from this five equipment, the link quality information between UE22 and distal end UE is obtained, the link quality information between UE21 and distal end UE is obtained, the link quality information between UE11 and distal end UE is obtained；Or, this five equipment are defined as the 2nd UE, obtain the link quality information between UE20 and distal end UE, obtain the link quality information between UE21 and distal end UE, obtain the link quality information between UE22 and distal end UE, the link quality information between UE10 and distal end UE is obtained, the link quality information between UE11 and distal end UE is obtained.

In the present invention, signal quality can be Reference Signal Received Power RSRP (Reference Signal Receiving Power, RSRP), Reference Signal Received Quality RSRQ (Reference Signal Received Quality), any one or more in circuit loss value (Path Loser, PL) between received signal strength indicator RSSI (Received Signal Strength Indication), the 2nd UE and the first UE.In the further embodiment of the present invention, we describe signal quality using RSRP as a kind of specific embodiment, but this is not limited to signal quality only RSRP.

Link quality information between 2nd UE and the first UE is that the first UE is obtained by first channel, Ke Yiwei：The signal quality on the first channel between 2nd UE and the first UE, such as：Circuit loss value PL between RSRP, RSRQ, RSSI, the 2nd UE and the first UE；Wherein, circuit loss value PL can be obtained by the RSRP and the first channel got from the 2nd UE received transmission power level to calculate, for example：PL=TxP-RSRP.Optionally, the first UE can receive the discovery message that the 2nd UE is sent by the first channel, and the link quality information is obtained according to the discovery message measurement.

The transmission power information can be：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent；Can also be：The transmission power information for the first channel that 2nd UE is sent.

Wherein, the equipment that first channel is used between the first UE and the 2nd UE is found, can find channel for the D2D between the first UE and the 2nd UE.Optionally, the trunking that the first channel can be used for realizing between the first UE and the 2nd UE is found.The method that trunking is found, be send on the first channel include first and/or the 2nd the information that identifies of UE realize.The data transfer that the second channel is used between the first UE and the 2nd UE, can be device-to-device (Device to Device, D2D) link between the first UE and the 2nd UE.

It should be noted that, device-to-device link can be referred to as D2D links, also referred to as side chain road (Sidelink), the present invention claims as a kind of generation of name, using D2D links as the proprietary term of device-to-device link, but this term does not limit scope used in the method for the present invention.Transmission means between D2D link distinct devices can be based on any one in broadcast, multicast or unicast transmission mode, to this is not limited by the present invention.In addition, the first channel and second channel can also be other channels, contrast of the embodiment of the present invention is without limiting.

It should be noted that the signified transmission power of the present invention is the transmission power level in particular transmission resource, such as：Each device-to-device (Device to Device, D2D transmission power) on link transmissions symbol or the transmission power in each D2D link transmissions subframes or every M Physical Resource Block (Physical Resource Blocks, PRB the transmission power on), M is the transmission power in the positive integer not less than 1 or each resource element (Resource Element, RE).

Optionally, the transmission power level of first channel can be：The specific transmission power levels of UE, the specific transmission power levels of UE refer to：The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different.The transmission power level of first channel can also be the specific transmission power level of cell, and the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or The transmission power level for the first channel that the 2nd UE that person is in different districts group is sent is different.

The transmission power deviation information can be the transmission power deviation between the first channel and second channel, can also be the configured information for determining the transmission power deviation between the first channel and second channel of the 2nd UE transmissions.

Optionally, the transmission power deviation can be：The specific transmission power deviations of UE, the specific transmission power deviations of UE refer to：The first channel that the 2nd UE of difference is sent is different from the transmission power deviation between second channel.For example, as shown in Figure 1, UE20 is two the 2nd different UE with UE21, then the transmission power deviation between the first channel and second channel of UE20 transmissions is different from the transmission power deviation between the first channel and second channel that UE21 is sent, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel, for example, as shown in Figure 1, if UE20, UE21 is in group 1, UE10 and UE11 is in group 2, then the transmission power deviation between the first channel and second channel of UE20 transmissions is different from the transmission power deviation between the first channel and second channel that UE10 is sent.

The transmission power deviation can also be the specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel.For example, as shown in Figure 1, if UE20, UE21 and UE10 are in cell 1, UE11, UE22 are in cell 2, then the transmission power deviation between UE20 is sent the first channel and second channel is different from the transmission power deviation between the first channel and second channel that UE11 is sent.Or the first channel of the 2nd UE transmissions in different districts group is different from the transmission power deviation between second channel, for example, as shown in Figure 1, if UE20, UE21 and UE10 are in cell 1, but UE20 and UE21 is in group 1, UE10 is in group 2, then the transmission power deviation between UE20 is sent the first channel and second channel is different from the transmission power deviation between the first channel and second channel that UE10 is sent.

The transmission power deviation can also be the transmission power deviation associated with the transmission mode of the second channel；Wherein, transmission mode can be based on network configuration D2D The pattern 1 of link transmission resource, can also be transmission modes 2 of the D2D based on the free resources of UE.For example, if the corresponding transmission power deviation of transmission mode 1 is 3dB, the corresponding transmission power deviation of transmission mode 2 is 5dB, then when the transmission mode of the 2nd UE second channels sent is transmission mode 1, transmission power deviation is just 3dB between its first channel and second channel.Optionally, pattern 1 and pattern 2 can also correspond to the calculating parameter of different transmission power calculation formula and/or transmission power.First UE and/or the 2nd UE can be according to predefined transmission power calculation formula and/or the calculating parameter of transmission power, to calculate transmission power deviation between the first channel of hair and second channel.

In the embodiment of the present invention, for the 2nd UE, the first UE can obtain the transmission power information of the 2nd UE by least one of following (1), (2), (3) three kinds of modes：

(1) the first UE obtains the transmission power information by the serving BS of the first UE.

It should be noted that the first UE is in the network coverage of the first UE serving BS in this mode (1).For example, as shown in Figure 1, if the 2nd UE is candidate relay equipment UE 21, first UE is distal end UE, and be in eNB2 network coverage, that is eNB2 is distal end UE serving BS, now, and distal end UE can obtain the transmission power information between the first channel and second channel of the transmission of candidate relay equipment UE 21 by eNB2.

(2) the first UE obtain the transmission power information by the 2nd UE.

It should be noted that the first UE can be located in the network coverage of base station in this mode (2), it may be located on outside the coverage of base station.

Optionally, the first channel that first UE can be sent by the 2nd UE obtains the transmission power information, specifically, the first UE can obtain the transmission power information using at least one of following (a), (b), (c), (d) mode from the first channel that the 2nd UE is sent：

(a) the first UE obtains the transmission power information by the information of first channel bearing.

Wherein, the information of the first channel bearing can include the transmission mould for indicating second channel The bit information of formula, the transmission mode for such as representing second channel with bit number 0,1 is transmission mode 1 or transmission mode 2.After the first UE gets the bit information of the transmission mode for indicating second channel, the transmission mode of second channel can be obtained according to bit information correspondence, the transmission power deviation between the first channel and second channel of the 2nd UE transmissions is then obtained further according to the corresponding relation of transmission mode and transmission power deviation；Or, the transmission power level for the first channel that the 2nd UE is sent is obtained according to the corresponding relation of transmission mode and transmission power level.

The information of first channel bearing, which can also be included, to be used to indicate transmission power deviation or the dedicated bit field of transmission power level, wherein, the dedicated bit field includes the transmission power deviation after quantifying or the bit information corresponding to transmission power level.

For example, if it is 0dB that the transmission power deviation between the first channel and second channel that multiple 2nd UE are sent, which penetrates minimum power deviation in power, peak power deviation is 10dB, transmission power deviation in the range of 0dB~10dB is quantified, obtain quantized value [0,3,6,9] dB, then can represent each power offset value (as shown in table 1 below) after quantifying with the information of 2 bits.Now, if the bit information included in the specific field is 00, it can determine that the transmission power deviation between the first channel and second channel of the 2nd UE transmissions is 0dB according to table 1.

Table 1

Quantized value	Bit information
Quantized value	Bit information	0	00
3	01	0	00
3	01	6	10
9	11	6	10

It should be noted that can need to be configured to the magnitude that minimum power deviation quantifies to the transmission power deviation in peak power deviation range, contrast of the embodiment of the present invention is without limiting.It is preferred that, quantization level is higher, and it is more careful that power offset value is divided, it is necessary to use the transmission power deviation represented with more bit informations after quantifying.

Optionally, the information of first channel bearing can be located in the request for being used to refer to equipment discovery of the first channel transmission or the packet of response.Such as：If the first channel is D2D has found channel, the device discovery messages that it is included are 232 bits, now, a specific field can be increased in this first channel, the bit information of indicated horsepower deviant or transmission power level is arranged in the specific field (as shown in Figure 4), that is, takes the equipment in original first channel and finds the information bit of signal to transmit the bit information for indicating transmission power level or transmission power deviation.It should be noted that needing to take the first channel Central Plains with this method indicated horsepower value come the bit of information, so as to influence the code check of the first channel.But, it is contemplated that the bit number that specific field sends 232 bit stealings of message relative to equipment is less, so, it is negligible on code check influence for the first channel.

(b) CRC (Cyclic Redundancy Check, the CRC) mask that uses obtains the transmission power information when the first UE sends first channel by the 2nd UE.

Wherein, the CRC masks can be：One predefined 0,1 bit sequence with CRC bit length identical, the crc field being added in after the completion of encoding.Do not use CRC masks or default CRC masks are full 0 sequences.If not having CRC masks, when decoding, the information bit of decoding out directly does CRC check, and CRC check result is correct, then it is assumed that the reception of this packet, the overall process of demodulation and decoding are correct, are otherwise wrong.

If adding mask on CRC, before CRC check is done, it is necessary first to CRC masks are removed, CRC check is then done again, to ensure that obtained result is only expected decoding result, otherwise CRC check is substantially mistake.Therefore the CRC mask code sequences of non-full 0 are added in the first channel with CRC, transmission power information can be obtained according to the bit information of CRC masks carrying for carrying a part of bit information.

For example, using 4 different masks, then the control information of 2 bits can be carried.Using 8 different CRC masks, then the control information of 3 bits can be carried.Different CRC masks are indicated that the bit information of transmission power level or transmission power deviation maps one by one with being used for, it is as shown in table 2 below, be one by CRC mask maps be 2 bit informations mapping table, if the CRC masks carried are 000011110000111100001111, it is 00 that can then obtain for the bit information of indicated horsepower deviation, and then it is inclined to obtain power according to bit information relation (as shown in table 1) corresponding with power offset value Difference.

Table 2

The CRC masks of 24 bits	Corresponding 2 bit information state
The CRC masks of 24 bits	Corresponding 2 bit information state	000011110000111100001111	00
000000000000111111111111	01	000011110000111100001111	00
000000000000111111111111	01	111100001111000011110000	10
111111111111000000000000	11	111100001111000011110000	10

It should be noted that the CRC masks of other length and the mapping relations of bit information can be configured according to above-mentioned principle, no longer illustrate one by one herein.

(c) demodulated reference signal (Demodulation Reference Signal, DMRS) that uses obtains the transmission power information when the first UE sends first channel by the 2nd UE.

Optionally, in the embodiment of the present invention, the first UE can obtain transmission power information according to the cyclic shift value of different DMRS sequences, and power offset value or transmission power level are determined according to the transmission power information.Such as, if DMRS sequence numbers have 8 different cyclic shift values, the information state of 3 bits of correspondence, can for transmit some in 3 bit informations, 3 bit informations that different cyclic shift value correspondences is carried compare state.

First UE can also obtain transmission power information according to the root sequence number of different DMRS sequences, and power offset value or transmission power level are determined according to the transmission power information.Such as, the DMRS sequences of one a length of 24, are generated by a length of 23 ZC sequences, can at least there is the root sequence number of 22 different DMRS sequences, and its value is [1,22].

First UE can also be according to the different DMRS sequences mapped on the DMRS symbols in former and later two adjacent time-slots in a 1ms subframe, the relation of front and rear adjacent DMRS sequences is corresponding with power offset values, according to the Relation acquisition power offset value of front and rear adjacent DMRS sequences.

First UE can determine power offset information according to modulated data symbol on two adjacent DMRS again, and power offset values or transmission power level are determined according to the transmission power offset information got.Specifically, the DMRS in former and later two adjacent time-slots in a 1ms subframe, any one DMRS sequence that can be among the two DMRS sequences A modulation symbol is modulated on row, information is carried from this modulation symbol, such as：A QPSK symbol is modulated, then can indicate the information of 2 bits, 16QAM symbol is modulated, then can indicate the information of 4 bits, one 64QAM of modulation signal can then indicate the information of 6 bits.

(d) resource location information that uses obtains the transmission power information when the first UE sends first channel by the 2nd UE.

Optionally, the resource pool that first UE is used when can send the first channel by the 2nd UE obtains transmission power information come correspondence, even there is K resource pool, then each resource pool, which can be corresponded to, indicates to be no more than log2 (K) individual bit information, now, can the corresponding bit information of the resource pool according to residing for the first channel, it is determined that transmission power deviant corresponding with the bit information.

For example, it is as shown in table 3 below, 4 resource pools correspond to 2 bit informations respectively, if the first channel is in resource pool 2, the transmission power information then got is 01, further according to bit information and the corresponding relation of power offset value (as shown in table 1), determine that the transmission power deviation between the first channel and second channel of the 2nd UE transmissions is：3dB.

Table 3

Resource pool	2 bit informations
Resource pool	2 bit informations	1	00
2	01	1	00
2	01	3	10
4	11	3	10

Optionally, the time-domain position and frequency domain position used when the first UE can also send the first channel by the 2nd UE obtains transmission power information come correspondence；For example, if there is M=8 optional frequency domain positions, N=4 optional time-domain positions, then there are M*N=32 optional time-frequency locations, now, the transmission power information of certain bit information can be indicated using all or part of position in 32 positions, can at most indicate 5 bit transmission power informations.

(3) the first UE obtains the transmission power information by the first UE and/or the 2nd UE reference synchronization source.

Wherein, the reference synchronization source of the first UE and/or the 2nd UE can be：The equipment that synchronous reference signal is sent to the first UE and/or the 2nd UE；Reference synchronization source can be in consolidated network coverage with the first UE and/or the 2nd UE, can also be in from the first UE and/or the 2nd UE in different network coverages.

Optionally, the 3rd channel that the first UE can be sent by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information；3rd channel is：The channel that the first UE and/or the reference synchronization source of the 2nd UE that first UE is received are sent；

The synchronizing sequence that can also be sent by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information.

Wherein, the 3rd channel that the first UE is sent by the reference synchronization source of the 2nd UE obtains the transmission power information and specifically includes following at least one mode：

First UE obtains the transmission power information by the information of the 3rd channel bearing, wherein, first UE can obtain the power information in the reserved bit by the 3rd channel, identical with above-mentioned (a) described mode, will not be repeated here.

Or, CRC CRC masks that the first UE is used when sending three channel by the first UE and/or the 2nd UE reference synchronization source obtain the transmission power information；Wherein, the CRC CRC masks that first UE is used when the first UE and/or the 2nd UE reference synchronization source sends three channel will not be repeated here come identical with above-mentioned (b) described mode by way of obtaining the transmission power information.

Or, demodulated reference signal DMRS that the first UE is used when sending three channel by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information；Wherein, the demodulated reference signal DMRS that first UE is used when the first UE and/or the 2nd UE reference synchronization source sends three channel will not be repeated here come identical with above-mentioned (c) described mode by way of obtaining the transmission power information.

Or, the first UE passes through the same of the first UE and/or the 2nd UE The resource location information that uses obtains the transmission power information when step reference source sends three channel；Wherein, the resource location information that first UE is used when the first UE and/or the 2nd UE reference synchronization source sends three channel will not be repeated here come identical with above-mentioned (c) described mode by way of obtaining the transmission power information.

Step 102：First UE determines the trunking of the first UE according to link quality information and N number of 2nd UE transmission power information between N number of second user equipment UE and the first UE from N number of 2nd UE.

Because the first UE, which gets the transmission power information, in step 101 to be the transmission power deviation information between the 2nd UE the first channels sent and second channel, or or the transmission power information of the first channel of the 2nd UE transmissions.So, corresponding, the first UE determines that the trunking of the first UE can include according to link quality information and N number of 2nd UE transmission power information between N number of second user equipment UE and the first UE from N number of 2nd UE：

First UE determines the trunking of the first UE according to the transmission power deviation information between the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent and the second channel of the 2nd UE transmissions from N number of 2nd UE；

Or, the first UE determines the trunking of the first UE according to the transmission power information of the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent from N number of 2nd UE.

Specifically, first UE determines that the trunking of the first UE can include according to the transmission power deviation information between the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent and second channel from N number of 2nd UE：

Transmission power deviation information between the second channel that first UE is sent according to the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent and the 2nd UE, calculates each described the respectively The link quality information for the second channel that two UE are sent, then according to the link quality information of all 2nd UE second channel, the 2nd UE corresponding to the best second channel of link-quality is determined the trunking of the first UE.

For example, as shown in figure 1, obtaining the link quality information (such as Reference Signal Received Power) between UE20, UE21, UE22, UE10 and UE11 and remote equipment (the first UE) respectively：RSRP20, RSRP21, RSRP22, RSRP10, RSRP11, further according to N number of 2nd UE transmission power deviation Δ TxP20, Δ TxP21, Δ TxP22, Δ TxP10, Δ TxP11, according to formula RSRP2=RSRP1+ Δs TxP, 2nd UE Reference Signal Received Power is added with the 2nd UE transmission power deviation, it will add up the trunking that the 2nd maximum UE of result is defined as the first UE, wherein, the 2nd maximum UE of addition result is：The 2nd best UE of the channel quality of second channel.

Specifically, first UE determines that the trunking of the first UE can include according to the transmission power information of the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent from N number of 2nd UE：

First UE is according to the link quality information between N number of second user equipment UE and the first UE, the transmission power information of the first channel of N number of 2nd UE transmissions and formula：PL2=PL1=TxP1-RSRP1, obtains the path loss on the second channel that N number of 2nd UE is sent, and then minimum corresponding 2nd UE of the path loss of the first channel in N number of 2nd UE is defined as determining to the trunking of the first UE；Wherein, TxP1 is the transmission power on the first channel, and PL2 is the path loss between the candidate relay equipment that the first channel is undergone in transmission and remote user equipment.

Further, in the embodiment of the present invention, it can also be that the first UE determines trunking by base station, realize that trunking is selected.Wherein, in order that base station completes the selection of trunking, after the first UE obtains the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information, methods described can also include：

First UE is by cellular link to the base station transmission link quality report；Wherein, the base station is the serving BS of the first UE, i.e., described first UE is described In the network coverage of base station, link connection can be directly set up with the first UE；

Or, the first UE sends the Link Quality Reports by the first UE to the repeated link of the base station to the base station, to cause base station to carry out trunking selection according to the Link Quality Reports；Wherein, the first UE is not in the network coverage of the base station.First UE, to the repeated link of the base station, is that the first UE selects repeated link between the 2nd UEA, " the UEA- base stations of the first UE- the 2nd " of formation in N number of 2nd UE.

Wherein, the Link Quality Reports specifically include following at least one information：

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

It is understood that when the first UE is not in the network coverage of the base station, before the first UE sends the Link Quality Reports by the first UE to the repeated link of the base station to the base station, methods described can also include：

First UE selects a UE as interim relaying UEA from N number of 2nd UE, carries out data forwarding between the first UE and base station, repeated link is formed with the first UE and base station.

From the foregoing, it will be observed that the embodiment of the present invention provides a kind of trunking system of selection, the first user equipment (UE) obtains the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；According to the link quality information and N number of 2nd UE transmission power information between N number of second user equipment UE and the first UE, the trunking of the first UE is determined from N number of 2nd UE.In this way, realizing the selection of peer-to-peer relay equipment by the first UE, solve and the problem of selection peer device is as trunking is not present in the prior art.

Embodiment two

Fig. 5 shows a kind of trunking system of selection provided in an embodiment of the present invention, applied to base station, as shown in figure 5, methods described can include：

Step 201：Base station is obtained between N number of second user equipment UE and the first UE Link quality information and N number of 2nd UE transmission power information.

Wherein, the equipment that first channel is used between the first UE and the 2nd UE is found, can be the discovery channel between the first UE and the 2nd UE.The data transfer that the second channel is used between the first UE and the 2nd UE, can be device-to-device (Device to Device, D2D) link between the first UE and the 2nd UE.In addition, the first channel and second channel can also be other channels, contrast of the embodiment of the present invention is without limiting.

It should be noted that the signified transmission power of the present invention is the transmission power level in particular transmission resource, such as：Each device-to-device (Device to Device, D2D in transmission power) on link transmissions symbol or the transmission power in each D2D link transmissions subframes or every M Physical Resource Block (Physical Resource Blocks, PRB) Transmission power, M is the transmission power in the positive integer not less than 1 or each resource element (Resource Element, RE).

Optionally, the transmission power level of first channel can be：The specific transmission power levels of UE, the specific transmission power levels of UE refer to：The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different.The transmission power level of first channel can also be the specific transmission power level of cell, and the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the 2nd UE in different districts group is different.

The transmission power deviation can also be the specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel.For example, as shown in figure 1, if UE20, UE21 and UE10 are in cell 1, UE11, UE22 are in cell 2, then the transmission power deviation between the first channel and second channel that the transmission power deviation and UE11 between UE20 is sent the first channel and second channel are sent Value is different.Or the first channel of the 2nd UE transmissions in different districts group is different from the transmission power deviation between second channel, for example, as shown in Figure 1, if UE20, UE21 and UE10 are in cell 1, but UE20 and UE21 is in group 1, UE10 is in group 2, then the transmission power deviation between UE20 is sent the first channel and second channel is different from the transmission power deviation between the first channel and second channel that UE10 is sent.

The transmission power deviation can also be the transmission power deviation associated with the transmission mode of the second channel；Wherein, transmission mode can be the pattern 1 based on network configuration D2D link transmission resources, can also be transmission modes 2 of the D2D based on the free resources of UE.For example, if the corresponding transmission power deviation of transmission mode 1 is 3dB, the corresponding transmission power deviation of transmission mode 2 is 5dB, then when the transmission mode of the 2nd UE second channels sent is transmission mode 1, transmission power deviation is just 3dB between its first channel and second channel.Optionally, pattern 1 and pattern 2 can also correspond to the calculating parameter of different transmission power calculation formula and/or transmission power.First UE and/or the 2nd UE can be according to predefined transmission power calculation formula and/or the calculating parameter of transmission power, to calculate transmission power deviation between the first channel of hair and second channel.

Optionally, the base station from the serving BS of the 2nd UE can obtain the transmission power information by way of signaling between base station.

The base station can also read the transmission power information from server, wherein, the server can be to operate, manage, safeguarding (Operation, Administration and Maintenance, OAM) server, to be pre-configured with the transmission power information being previously stored with the server to the base station, and the server between the first channel of the 2nd UE transmissions and second channel.

The base station obtains the transmission power information in the storage of the base station can also being configured to from server.

Step 202：Base station determines the trunking of the first UE according to link quality information and N number of 2nd UE transmission power information between N number of 2nd UE and the first UE from N number of 2nd UE.

Due to, in step 201 base station get the transmission power information can be with For the transmission power deviation information between the 2nd UE the first channels sent and second channel, or or the transmission power information of the first channel of the 2nd UE transmissions.So, corresponding, base station determines that the trunking of the first UE can include according to link quality information and N number of 2nd UE transmission power information between N number of second user equipment UE and the first UE from N number of 2nd UE：

Base station determines the trunking of the first UE according to the transmission power deviation information between the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent and the second channel of the 2nd UE transmissions from N number of 2nd UE；

Or, the transmission power information for the first channel that base station the 2nd UE according to the link quality information between at least one N number of second user equipment UE and the first UE and N is sent determines the trunking of the first UE from N number of 2nd UE.

Specifically, base station determines that the trunking of the first UE can include according to the transmission power deviation information between the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent and second channel from N number of 2nd UE：

Base station is according to the transmission power deviation information between the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent and second channel, the link quality information for the second channel that each 2nd UE is sent is calculated respectively, then according to the link quality information of all 2nd UE second channel, the 2nd UE corresponding to the best second channel of link-quality is determined to the trunking of the first UE.

For example, as shown in figure 1, obtaining the link quality information (such as Reference Signal Received Power) between UE20, UE21, UE22, UE10 and UE11 and remote equipment (the first UE) respectively：RSRP20, RSRP21, RSRP22, RSRP10, RSRP11, further according to N number of 2nd UE transmission power deviation Δ TxP20, Δ TxP21, Δ TxP22, Δ TxP10, Δ TxP11, according to formula RSRP2=RSRP1+ Δs TxP, 2nd UE Reference Signal Received Power is added with the 2nd UE transmission power deviation, result is will add up The 2nd maximum UE is defined as the first UE trunking, wherein, the 2nd maximum UE of addition result is：The 2nd best UE of the channel quality of second channel.

Specifically, base station determines that the trunking of the first UE can include according to the transmission power information of the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent from N number of 2nd UE：

Base station is according to the transmission power information of the link quality information between N number of second user equipment UE and the first UE, N number of 2nd UE the first channel sent and according to formula：PL2=PL1=TxP1-RSRP1, obtains the path loss on the second channel that N number of 2nd UE is sent, and then minimum corresponding 2nd UE of the path loss of the first channel in N number of 2nd UE is defined as determining to the trunking of the first UE；Wherein, TxP1 is the transmission power on the first channel, and PL2 is the path loss between the candidate relay equipment that the first channel is undergone in transmission and remote user equipment.

Further, in the embodiment of the present invention, obtained in base station before the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information, methods described can also include：

The base station receives the Link Quality Reports that the first UE is sent by cellular link, wherein, the base station is the serving BS of the first UE, i.e., described first UE can directly set up link connection in the network coverage of the base station with the first UE；

Or, the base station receives the Link Quality Reports that the first UE is sent by the first UE to base station repeated link, wherein, first UE is not in the network coverage of the base station, a UE is selected as interim relaying UE from N number of 2nd UE by the first UE, data forwarding is carried out between the first UE and base station, repeated link is formed with the first UE and base station.

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

From the foregoing, it will be observed that the embodiment of the present invention provides a kind of trunking system of selection, base station obtains the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；According to the link quality information and N number of 2nd UE transmission power information between N number of second user equipment UE and the first UE, the trunking of the first UE is determined from N number of 2nd UE.In this way, realizing the selection of peer-to-peer relay equipment by base station, solve and the problem of selection peer device is as trunking is not present in the prior art.

Embodiment three

Fig. 6 shows another trunking system of selection provided in an embodiment of the present invention, as shown in fig. 6, methods described can include：

Step 301：Second user equipment UE sends transmission power information.

Wherein, the 2nd UE can be that before trunking determination, can turn into the candidate relay UE of trunking.

Optionally, the transmission power level of first channel can be：The specific transmission power levels of UE, the specific transmission power levels of UE refer to：The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different.The transmission power level of first channel can also be the specific transmission power level of cell, and the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the 2nd UE in different districts group is different 's.

The transmission power deviation can also be the transmission power deviation associated with the transmission mode of the second channel；Wherein, transmission mode can be the pattern 1 based on network configuration D2D link transmission resources, can also be transmission moulds of the D2D based on the free resources of UE Formula 2.For example, if the corresponding transmission power deviation of transmission mode 1 is 3dB, the corresponding transmission power deviation of transmission mode 2 is 5dB, then when the transmission mode of the 2nd UE second channels sent is transmission mode 1, transmission power deviation is just 3dB between its first channel and second channel.Optionally, pattern 1 and pattern 2 can also correspond to the calculating parameter of different transmission power calculation formula and/or transmission power.First UE and/or the 2nd UE can be according to predefined transmission power calculation formula and/or the calculating parameter of transmission power, to calculate transmission power deviation between the first channel of hair and second channel.

Optionally, in the embodiment of the present invention, the 2nd UE can send transmission power information by following at least one modes：

2nd UE sends the transmission power information by the serving BS of the 2nd UE；Specifically, when the first UE is in base station range, the 2nd UE directly can send the transmission power information by the serving BS of the 2nd UE to the first UE；

Or, the 2nd UE sends the transmission power information by first channel.

Wherein, the 2nd UE sends the transmission power information by first channel and specifically includes following at least one mode：

Step 302：The second user equipment UE receives confirmation, wherein, the confirmation is used to indicate that the 2nd UE turns into trunking.

Optionally, the 2nd UE can receive the confirmation that the serving BS or the first UE of the 2nd UE are sent, and indicate that the 2nd UE turns into trunking.

Further, before the method described in the present embodiment is performed, the 2nd UE also needs to determine from as candidate relay equipment, specifically, before step 301, methods described can also include：

According to the signal quality threshold information, the signal quality for detecting the signal that the 2nd UE is received meets preset rules.

Wherein, the signal quality threshold information can include preset signals quality threshold, wherein, preset signals quality threshold can be configured as needed, and contrast of the embodiment of the present invention is without limiting.Optionally, the 2nd UE can receive the threshold information for the signal quality that base station is sent by signaling with special or broadcast signaling.

The signal quality that 2nd UE detects the signal that the 2nd UE is received can include following at least one signal quality：

Detect the signal quality from base station, such as at least one of RSRP, RSRQ, RSSI, PL；

Or, detect the signal quality from the first UE, such as at least one of RSRP, RSRQ, RSSI, PL.

Optionally, described in the 2nd UE according to the signal quality threshold information, the signal quality for detecting the signal that the 2nd UE is received meets preset rules and can include following at least one：

The signal quality from base station is detected to be more than and/or equal to the preset signals quality threshold in signal quality threshold information；

The signal quality from base station is detected to be less than and/or equal to the preset signals quality threshold in signal quality threshold information；

The signal quality from the first UE is detected to be more than and/or equal to the preset signals quality threshold in signal quality threshold information.

From the foregoing, it will be observed that the embodiment of the present invention provides a kind of trunking system of selection, second user equipment UE sends transmission power information, and the transmission power information is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；Receive Confirmation, wherein, the confirmation is used to indicate that the 2nd UE turns into trunking.So, transmission power information is sent to the first UE by the 2nd UE, to cause the first UE to determine trunking from multiple 2nd UE according to the information, the selection of peer-to-peer relay equipment is realized by the first UE, solves and the problem of selection peer device is as trunking is not present in the prior art.

Example IV

Fig. 7 is a kind of user equipment (UE) 70 provided in an embodiment of the present invention, for performing the method described in embodiment one, wherein, the UE can be：When UE and base station (eNB) have data transfer, do not carry out data transmission with eNB directly, and the UE for needing the forwarding by trunking indirectly to carry out data transmission with base station, such as remote equipment equipment；In the embodiment of the present invention, the UE can be located in the network coverage of base station, wireless heterogeneous networks (Radio Resource Control can be directly set up with base station, RRC) connect or receive base station and send broadcast message, but when carrying out data transmission between base station, need to be forwarded by trunking, for example, as shown in Figure 1, UE is distal end UE, in eNB2 network coverage, it can be carried out data transmission by UE21 with eNB2, be carried out data transmission by UE11 with eNB1；In addition, the UE may be located on outside the network coverage of base station, the signal that the user equipment in base station network coverage is sent can be received, for example, as shown in Figure 2, the UE is distal end UE, outside eNB1 and eNB2 network coverage, and the signal that UE21 and UE11 in the network coverage in eNB1 and eNB2 are sent can be received simultaneously.As shown in fig. 7, the UE can include：

Acquiring unit 701, for obtaining the link quality information between the N number of 2nd UE and UE and N number of 2nd UE transmission power information.

Wherein, the 2nd UE can be that before trunking determination, can turn into the candidate relay UE of trunking；N is the integer more than or equal to 1.It should be noted that, in specific application scenarios, the UE that the signal quality received is more than predetermined threshold value can be defined as candidate relay equipment by UE, then it regard the armamentarium in the candidate relay equipment determined as above-mentioned N number of 2nd UE, or it regard the equipment component in the candidate relay equipment determined as N number of 2nd UE, you can with from the M candidate relay predefined out Take N number of equipment as the 2nd UE in equipment, M can be the integer more than N, or the integer equal to N.Wherein, predetermined threshold value can have been predefined in advance, can also base station by signal deployment, contrast of the embodiment of the present invention is without limiting.

For example, as depicted in figs. 1 and 2, UE is distal end UE, five equipment of UE20, UE21, UE22, UE10 and UE11 are defined as to distal end UE candidate relay UE first, then tri- equipment of UE22, UE21 and UE11 are selected from this five equipment, the link quality information between UE22 and distal end UE is obtained, the link quality information between UE21 and distal end UE is obtained, the link quality information between UE11 and distal end UE is obtained；Or, this five equipment are defined as the 2nd UE, obtain the link quality information between UE20 and distal end UE, obtain the link quality information between UE21 and distal end UE, obtain the link quality information between UE22 and distal end UE, the link quality information between UE10 and distal end UE is obtained, the link quality information between UE11 and distal end UE is obtained.

Link quality information between 2nd UE and UE is that the UE is obtained by first channel, Ke Yiwei：The signal quality on the first channel between the 2nd UE and UE, such as：Circuit loss value PL between RSRP, RSRQ, RSSI, the 2nd UE and UE；Wherein, circuit loss value PL can be obtained by the RSRP and the first channel got from the 2nd UE received transmission power level to calculate, for example：PL=TxP-RSRP.Optionally, UE can receive the discovery message that the 2nd UE is sent by the first channel, and the link quality information is obtained according to the discovery message measurement.

Wherein, the equipment that first channel is used between the UE and the 2nd UE is found, can be the discovery channel between UE and the 2nd UE.The data transfer that the second channel is used between the UE and the 2nd UE, can be device-to-device (Device to Device, D2D) link between UE and the 2nd UE.In addition, the first channel and second channel can also be other channels, contrast of the embodiment of the present invention is without limiting.

Optionally, the transmission power level of first channel can be：The specific transmission power levels of UE, the specific transmission power levels of UE refer to：The 2nd UE of difference send the The transmission power level of one channel is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different.The transmission power level of first channel can also be the specific transmission power level of cell, and the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the 2nd UE in different districts group is different.

The transmission power deviation can also be the specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel.For example, as shown in Figure 1, if UE20, UE21 and UE10 are in cell 1, UE11, UE22 are in cell 2, then the transmission power deviation between UE20 is sent the first channel and second channel is different from the transmission power deviation between the first channel and second channel that UE11 is sent.Or the first channel of the 2nd UE transmissions in different districts group is different from the transmission power deviation between second channel, for example, as shown in Figure 1, if UE20, UE21 and UE10 are in cell 1, but UE20 and UE21 is in group 1, UE10 is in group 2, then the transmission power between UE20 is sent the first channel and second channel is inclined Transmission power deviation between difference and the first channel and second channel that UE10 is sent is different.

The transmission power deviation can also be the transmission power deviation associated with the transmission mode of the second channel；Wherein, transmission mode can be the pattern 1 based on network configuration D2D link transmission resources, can also be transmission modes 2 of the D2D based on the free resources of UE.For example, if the corresponding transmission power deviation of transmission mode 1 is 3dB, the corresponding transmission power deviation of transmission mode 2 is 5dB, then when the transmission mode of the 2nd UE second channels sent is transmission mode 1, transmission power deviation is just 3dB between its first channel and second channel.Optionally, pattern 1 and pattern 2 can also correspond to the calculating parameter of different transmission power calculation formula and/or transmission power.UE and/or the 2nd UE can be according to predefined transmission power calculation formula and/or the calculating parameter of transmission power, to calculate transmission power deviation between the first channel of hair and second channel.

Determining unit 702, for the link quality information between the N number of second user equipment UE got according to the acquiring unit 701 and the UE and N number of 2nd UE transmission power information, determines the trunking of the UE from N number of 2nd UE.

Further, in the embodiment of the present invention, for the 2nd UE, the acquiring unit 701 can specifically obtain the transmission power information between the first channel and second channel of the 2nd UE transmissions by following (1), (2), (3) three kinds of modes：

(1) transmission power information is obtained by the serving BS of the UE.

It should be noted that UE is in the network coverage of UE serving BS in this mode (1).For example, as shown in Figure 1, if the 2nd UE is candidate relay equipment UE 21, UE is distal end UE, and be in eNB2 network coverage, that is eNB2 is distal end UE serving BS, now, and distal end UE can obtain the transmission power information between the first channel and second channel of the transmission of candidate relay equipment UE 21 by eNB2.

(2) transmission power information is obtained by the 2nd UE.

It should be noted that UE can be located in the network coverage of base station in this mode (2), it may be located on outside the coverage of base station.

Optionally, the acquiring unit 701 can pass through the first of the 2nd UE transmissions Channel obtains the transmission power information, specifically, the acquiring unit 701 can obtain the transmission power information using at least one of following (a), (b), (c), (d) mode from the first channel that the 2nd UE is sent：

(a) transmission power information is obtained by the information of first channel bearing.

Wherein, the information of the first channel bearing can include the bit information for the transmission mode for indicating second channel, and the transmission mode for such as representing second channel with bit number 0,1 is transmission mode 1 or transmission mode 2.After UE gets the bit information of the transmission mode for indicating second channel, the transmission mode of second channel can be obtained according to bit information correspondence, the transmission power deviation between the first channel and second channel of the 2nd UE transmissions is then obtained further according to the corresponding relation of transmission mode and transmission power deviation；Or, the transmission power level for the first channel that the 2nd UE is sent is obtained according to the corresponding relation of transmission mode and transmission power level.

The information of first channel bearing, which can also be included, to be used to indicate transmission power deviation or the dedicated bit field of transmission power level, wherein, the dedicated bit field includes the bit information corresponding to the transmission power deviation after quantifying.

Optionally, the information of first channel bearing can be located in the request for being used to refer to equipment discovery of the first channel transmission or the packet of response.Such as：If the first channel is D2D has found channel, and the device discovery messages that it is included are 232 bits, at this point it is possible to increase a specific field in this first channel, the bit information of indicated horsepower deviant is arranged in the specific field.(as shown in Figure 4), that is, take the equipment in original first channel and find the information bit of signal to transmit the bit information for indicating transmission power level or transmission power deviation.It should be noted that needing to take the first channel Central Plains with this method indicated horsepower value come the bit of information, so as to influence the code check of the first channel.But, it is contemplated that the bit number that specific field sends 232 bit stealings of message relative to equipment is less, so, it is negligible on code check influence for the first channel.

(b) CRC (Cyclic Redundancy Check, the CRC) mask that uses obtains the transmission power information when sending first channel by the 2nd UE.

(c) demodulated reference signal (Demodulation Reference Signal, DMRS) that uses obtains the transmission power information when sending first channel by the 2nd UE.

Optionally, in the embodiment of the present invention, acquiring unit 701 can obtain transmission power information according to the cyclic shift value of different DMRS sequences, and power offset value or transmission power level are determined according to the transmission power information.Such as, if DMRS sequence numbers have 8 different cyclic shift values, the information state of 3 bits of correspondence, can for transmit some in 3 bit informations, 3 bit informations that different cyclic shift value correspondences is carried compare state.

Acquiring unit 701 can also obtain transmission power information according to the root sequence number of different DMRS sequences, and power offset value or transmission power level are determined according to the transmission power information.Such as, the DMRS sequences of one a length of 24, are generated by a length of 23 ZC sequences, can at least there is the root sequence number of 22 different DMRS sequences, and its value is [1,22].

Acquiring unit 701 can also be according to the different DMRS sequences mapped on the DMRS symbols in former and later two adjacent time-slots in a 1ms subframe, the relation of front and rear adjacent DMRS sequences is corresponding with power offset values, according to the Relation acquisition power offset value of front and rear adjacent DMRS sequences.

Acquiring unit 701 can determine power offset information according to modulated data symbol on two adjacent DMRS again, and power offset values or transmission power level are determined according to the transmission power offset information got.Specifically, the DMRS in former and later two adjacent time-slots in a 1ms subframe, a modulation symbol can be modulated in any one DMRS sequence among the two DMRS sequences, information is carried from this modulation symbol, such as：A QPSK symbol is modulated, then can indicate the information of 2 bits, 16QAM symbol is modulated, then can indicate the information of 4 bits, one 64QAM of modulation signal can then indicate the information of 6 bits.

(d) resource location information that uses obtains the transmission power information when sending first channel by the 2nd UE.

Optionally, the resource pool that acquiring unit 701 is used when can send the first channel by the 2nd UE obtains transmission power information come correspondence, even there is K resource pool, then each resource pool, which can be corresponded to, indicates to be no more than log2 (K) individual bit information, now, can the corresponding bit information of the resource pool according to residing for the first channel, it is determined that transmission power deviant corresponding with the bit information.

For example, as shown in table 3,4 resource pools correspond to 2 bit informations respectively, if the first channel is in resource pool 2, the transmission power information then got is 01, further according to bit information and the corresponding relation of power offset value (as shown in table 1), determine that the transmission power deviation between the first channel and second channel of the 2nd UE transmissions is：3dB.

Optionally, the time-domain position and frequency domain position used when acquiring unit 701 can also send the first channel by the 2nd UE obtains transmission power information come correspondence；For example, if there is M=8 optional frequency domain positions, N=4 optional time-domain positions, then there are M*N=32 optional time-frequency locations, now, the transmission power information of certain bit information can be indicated using all or part of position in 32 positions, can at most indicate 5 bit transmission power informations.

(3) transmission power information is obtained by the UE and/or the 2nd UE reference synchronization source.

Wherein, the UE and/or the 2nd UE reference synchronization source can be：The equipment that synchronous reference signal is sent to the UE and/or the 2nd UE；Reference synchronization source can be in consolidated network coverage with UE and/or the 2nd UE, can also be in from UE and/or the 2nd UE in different network coverages.

Optionally, the 3rd channel that acquiring unit 701 can be sent by the UE and/or the 2nd UE reference synchronization source obtains the transmission power information；3rd channel is：The channel that the UE and/or the reference synchronization source of the 2nd UE that the UE is received are sent；

The synchronizing sequence that can also be sent by UE and/or the 2nd UE reference synchronization source obtains the transmission power information.

Wherein, the 3rd channel that the acquiring unit 701 is sent by the reference synchronization source of the 2nd UE obtains the transmission power information and specifically includes following at least one mode：

The acquiring unit 701 obtains the transmission power information by the information of the 3rd channel bearing, wherein, acquiring unit 701 can obtain the power information in the reserved bit by the 3rd channel, identical with above-mentioned (a) described mode, will not be repeated here.

Or, the reference synchronization source of UE and/or the 2nd UE described in the acquiring unit 701 sends the CRC CRC masks that use during three channel to obtain the transmission power information；Wherein, the CRC CRC masks that the acquiring unit 701 is used when the UE and/or the 2nd UE reference synchronization source sends three channel will not be repeated here come identical with above-mentioned (b) described mode by way of obtaining the transmission power information.

Or, demodulated reference signal DMRS that the acquiring unit 701 is used when sending three channel by the UE and/or the 2nd UE reference synchronization source obtains the transmission power information；Wherein, the demodulated reference signal DMRS that the acquiring unit 701 is used when the UE and/or the 2nd UE reference synchronization source sends three channel will not be repeated here come identical with above-mentioned (c) described mode by way of obtaining the transmission power information.

Or, resource location information that the acquiring unit 701 is used when sending three channel by the UE and/or the 2nd UE reference synchronization source obtains the transmission power information；Wherein, the resource location information that the acquiring unit 701 is used when the UE and/or the 2nd UE reference synchronization source sends three channel will not be repeated here come identical with above-mentioned (c) described mode by way of obtaining the transmission power information.

Further, can be the transmission power information between the 2nd UE the first channels sent and second channel because acquiring unit 701 gets the power information, or or the transmission power information of the first channel of the 2nd UE transmissions；So, it is corresponding, determining unit 702 specifically for：

According to the transmission power information between the link quality information between N number of second user equipment UE and the UE and N number of 2nd UE the first channel sent and second channel, the trunking of the UE is determined from N number of 2nd UE；

Or, according to the transmission power information of the link quality information between N number of second user equipment UE and the UE and N number of 2nd UE the first channel sent, the trunking of the UE is determined from N number of 2nd UE.

Specifically, transmission power information between the first channel and second channel that the link quality information according between N number of second user equipment UE and the UE and N number of 2nd UE are sent, determines that the trunking of the UE can include from N number of 2nd UE：

According to the transmission power information between the link quality information between N number of second user equipment UE and the UE and N number of 2nd UE the first channel sent and second channel, the link quality information for the second channel that each 2nd UE is sent is calculated respectively, then according to the link quality information of all 2nd UE second channel, the 2nd UE corresponding to the best second channel of link-quality is determined to the trunking of the UE.For example, as shown in figure 1, obtaining the link quality information (such as Reference Signal Received Power) between UE20, UE21, UE22, UE10 and UE11 and remote equipment (UE) respectively：RSRP20, RSRP21, RSRP22, RSRP10, RSRP11, further according to N number of 2nd UE transmission power deviation Δ TxP20, Δ TxP21, Δ TxP22, Δ TxP10, Δ TxP11, according to formula RSRP2=RSRP1+ Δs TxP, 2nd UE Reference Signal Received Power is added with the 2nd UE transmission power deviation, it will add up the trunking that the 2nd maximum UE of result is defined as UE, wherein, the 2nd maximum UE of addition result is：The 2nd best UE of the channel quality of second channel.

Specifically, the transmission power information for the first channel that the link quality information according between N number of second user equipment UE and the UE and N number of 2nd UE are sent, determines that the trunking of the UE can include from N number of 2nd UE：

According to the power information of the link quality information between N number of second user equipment UE and the UE and N number of 2nd UE the first channel sent, according to formula：RSRP1=TxP1-PL1, wherein, TxP1 is the transmission power on the first channel, PL1 is the path loss between the candidate relay equipment that the first channel is undergone in transmission and remote user equipment, the path loss on the first channel that N number of 2nd UE is sent is obtained, then is defined as determining by minimum corresponding 2nd UE of the path loss of the first channel in N number of 2nd UE The trunking of the UE.

Further, in the embodiment of the present invention, can also be that the UE determines trunking by base station, realize that trunking is selected, wherein, in order that base station completes the selection of trunking, after the UE obtains the link quality information in N number of 2nd UE between the N number of 2nd UE and UE and N number of 2nd UE transmission power information, as shown in Figure 7 A, the UE can also include：

Transmitting element 703, for sending the Link Quality Reports to the base station by cellular link, wherein, the base station is the serving BS of the UE, i.e., described UE can directly set up link connection in the network coverage of the base station with UE；

Or, the Link Quality Reports are sent to the base station by the UE to base station repeated link, to cause base station to carry out trunking selection according to the Link Quality Reports；Wherein, the UE is not in the network coverage of the base station.The UE, to the repeated link of the base station, is that UE selects repeated link between the 2nd UEA, " the UEA- base stations of UE- the 2nd " of formation in N number of 2nd UE.

Link quality information between N number of 2nd UE and UE；

N number of 2nd UE transmission power information；

It is appreciated that, when the UE is not in the network coverage of the base station, the determining unit 702, it is additionally operable to before the transmission sends the Link Quality Reports by the UE to the repeated link of the base station to the base station, a UE is selected from N number of 2nd UE as interim relaying UE, data forwarding is carried out between UE and base station, repeated link is formed with UE and base station.

From the foregoing, it will be observed that the embodiment of the present invention provides a kind of user equipment (UE), the link quality information between N number of second user equipment UE and the UE and N number of 2nd UE transmission power information are obtained；Wherein, the power information is：Transmission power information between the first channel and second channel that 2nd UE is sent, or the transmission power information of the first channel that the 2nd UE is sent；According to the link quality information between N number of second user equipment UE and the UE and N number of 2nd UE transmission power information, The trunking of the UE is determined from N number of 2nd UE.In this way, realizing the selection of peer-to-peer relay equipment by UE, solve and the problem of selection peer device is as trunking is not present in the prior art.

Embodiment five

Fig. 8 shows a kind of structure chart of base station provided in an embodiment of the present invention, as shown in figure 8, the base station can include：

Acquiring unit 801, for obtaining the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information.

Wherein, the link quality information is that the first UE is obtained by first channel, can be Reference Signal Received Power (Reference Signal Receiving Power, RSRP), Reference Signal Received Quality (Reference Signal Receiving Quality, RSRQ), service quality (Quality of Serice, QoS), at least one of received signal strength (Received Signal Strength, RSS) information.

The transmission power information can be：Transmission power information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent；Can also be：The transmission power information for the first channel that 2nd UE is sent.

Determining unit 802, for the link quality information and N number of 2nd UE transmission power information between N number of 2nd UE and the first UE for being got according to the acquiring unit 801, determines the trunking of the first UE from N number of 2nd UE.

Further, the acquiring unit 801 specifically for：By way of signaling between base station the transmission power information is obtained from the serving BS of the 2nd UE；

Or, the transmission power information is read from server, wherein, the server can be to operate, manage, safeguarding (Operation, Administration and Maintenance, OAM) server, to be pre-configured with the transmission power information being previously stored with the server to the base station, and the server between the first channel of the 2nd UE transmissions and second channel；

Or, from server be configured to the storage of the base station in obtain the transmission power information.

Further, can be the transmission power information between the 2nd UE the first channels sent and second channel because acquiring unit 801 gets the power information, or or the transmission power information of the first channel of the 2nd UE transmissions；So, it is corresponding, determining unit 802 specifically for：

According to the transmission power information between the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent and second channel, the trunking of the first UE is determined from N number of 2nd UE；

Or, believed according to the transmission power of the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent Breath, determines the trunking of the first UE from N number of 2nd UE.

Specifically, transmission power information between the first channel and second channel that the link quality information according between N number of second user equipment UE and the first UE and N number of 2nd UE are sent, determines that the trunking of the first UE can include from N number of 2nd UE：

According to the transmission power information between the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent and second channel, the link quality information for the second channel that each 2nd UE is sent is calculated respectively, then according to the link quality information of all 2nd UE second channel, the 2nd UE corresponding to the best second channel of link-quality is determined to the trunking of the first UE.For example, as shown in figure 1, obtaining the link quality information (such as Reference Signal Received Power) between UE20, UE21, UE22, UE10 and UE11 and remote equipment (the first UE) respectively：RSRP20, RSRP21, RSRP22, RSRP10, RSRP11, further according to N number of 2nd UE transmission power deviation Δ TxP20, Δ TxP21, Δ TxP22, Δ TxP10, Δ TxP11, according to formula RSRP2=RSRP1+ Δs TxP, 2nd UE Reference Signal Received Power is added with the 2nd UE transmission power deviation, it will add up the trunking that the 2nd maximum UE of result is defined as the first UE, wherein, the 2nd maximum UE of addition result is：The 2nd best UE of the channel quality of second channel.

Specifically, the transmission power information for the first channel that the link quality information according between N number of second user equipment UE and the first UE and N number of 2nd UE are sent, determines that the trunking of the first UE can include from N number of 2nd UE：

According to the transmission power information of the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE the first channel sent, according to formula：RSRP1=TxP1-PL1, wherein, TxP1 is the transmission power on the first channel, PL1 is the path loss between the candidate relay equipment that the first channel is undergone in transmission and remote user equipment, the path loss on the first channel that N number of 2nd UE is sent is obtained, then minimum corresponding 2nd UE of the path loss of the first channel in N number of 2nd UE is defined as determining to the trunking of the first UE.

Further, as shown in Figure 8 A, the base station also includes：

Receiving unit 803, before for getting the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information in acquiring unit 801, receive the Link Quality Reports that the first UE is sent by cellular link, wherein, the base station is the serving BS of the first UE, i.e. described first UE can directly set up link connection in the network coverage of the base station with the first UE；

Or, receive the Link Quality Reports that the first UE is sent by the first UE to base station repeated link, wherein, first UE is not in the network coverage of the base station, a UE is selected as interim relaying UE from N number of 2nd UE by the first UE, data forwarding is carried out between the first UE and base station, repeated link is formed with the first UE and base station.

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

From the foregoing, it will be observed that the embodiment of the present invention provides a kind of base station, the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information are obtained；Wherein, the power information is：Transmission power information between the first channel and second channel that 2nd UE is sent, or the transmission power information of the first channel that the 2nd UE is sent；According to the link quality information and N number of 2nd UE transmission power information between N number of second user equipment UE and the first UE, the trunking of the first UE is determined from N number of 2nd UE.In this way, realizing the selection of peer-to-peer relay equipment by base station, solve and the problem of selection peer device is as trunking is not present in the prior art.

Embodiment six

Fig. 9 shows a kind of structure chart of user equipment (UE) 90 provided in an embodiment of the present invention, for performing the method described in embodiment three, wherein, UE90 can be that before trunking determination, can turn into the candidate relay UE of trunking.As shown in figure 9, institute Stating UE can include：

Transmitting element 901, for sending transmission power information.

Wherein, the transmission power information can be：Transmission power deviation information between the second channel that the first channel and the UE that the UE is sent are sent；Can also be：The transmission power information for the first channel that the UE is sent.

Wherein, the equipment that first channel is used between the first UE and UE is found, can be the discovery channel between the first UE and UE.The data transfer that the second channel is used between the first UE and UE, can be device-to-device (Device to Device, D2D) link between the first UE and UE.In addition, the first channel and second channel can also be other channels, contrast of the embodiment of the present invention is without limiting.

Optionally, the transmission power level of first channel can be：The specific transmission power levels of UE, the specific transmission power levels of UE refer to：The transmission power level for the first channel that different UE are sent is different, or the transmission power level in different groups of UE the first channels sent is different.The transmission power level of first channel can also be the specific transmission power level of cell, and the specific transmission power level of cell refers to：The transmission power level for the first channel that UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the UE in different districts group is different.

The transmission power deviation information can be the transmission power deviation between the first channel and second channel, can also be the configured information for determining the transmission power deviation between the first channel and second channel of the UE transmissions.

Optionally, the transmission power deviation can be：The specific transmission power deviations of UE, the specific transmission power deviations of UE refer to：The first channel that different UE are sent is different from the transmission power deviation between second channel.For example, as shown in Figure 1, UE20 is two different UE with UE21, then the transmission power deviation between the first channel and second channel of UE20 transmissions is different from the transmission power deviation between the first channel and second channel that UE21 is sent, or the first channel in different groups of UE transmissions is different from the transmission power deviation between second channel, for example, as shown in Figure 1, if UE20, UE21 are in group 1, UE10 and UE11 is in group 2, then the transmission power deviation between UE20 is sent the first channel and second channel and the first of UE10 transmissions Transmission power deviation between channel and second channel is different.

The transmission power deviation can also be the specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that UE in different districts is sent is different from the transmission power deviation between second channel.For example, as shown in Figure 1, if UE20, UE21 and UE10 are in cell 1, UE11, UE22 are in cell 2, then the transmission power deviation between UE20 is sent the first channel and second channel is different from the transmission power deviation between the first channel and second channel that UE11 is sent.Or the first channel of the UE transmissions in different districts group is different from the transmission power deviation between second channel, for example, as shown in Figure 1, if UE20, UE21 and UE10 are in cell 1, but UE20 and UE21 is in group 1, UE10 is in group 2, then the transmission power deviation between UE20 is sent the first channel and second channel is different from the transmission power deviation between the first channel and second channel that UE10 is sent.

The transmission power deviation can also be the transmission power deviation associated with the transmission mode of the second channel；Wherein, transmission mode can be the pattern 1 based on network configuration D2D link transmission resources, can also be transmission modes 2 of the D2D based on the free resources of UE.For example, if the corresponding transmission power deviation of transmission mode 1 is 3dB, the corresponding transmission power deviation of transmission mode 2 is 5dB, then when the transmission mode of the UE second channels sent is transmission mode 1, transmission power deviation is just 3dB between its first channel and second channel.Optionally, pattern 1 and pattern 2 can also correspond to the calculating parameter of different transmission power calculation formula and/or transmission power.First UE and/or UE can be according to predefined transmission power calculation formula and/or the calculating parameter of transmission power, to calculate transmission power deviation between the first channel of hair and second channel.

Receiving unit 902, confirmation is received for UE, wherein, the confirmation is used to indicate that the UE turns into trunking.

Further, in the embodiment of the present invention, the transmitting element 901, specifically for send transmission power information by following at least one modes：

The transmission power information is sent by the serving BS of the UE；Specifically, when the first UE is in base station range, UE directly can send the transmission power information by the serving BS of the UE to the first UE；

Or, the transmission power information is sent by first channel.

Wherein, the transmitting element 901 sends the transmission power information by first channel and specifically includes following at least one mode：

Or, the resource location information that is used by first channel sends the transmission power information.

Further, receiving unit 902 specifically for：

The confirmation that the serving BS or the first UE of the UE are sent is received, indicates that UE turns into trunking.

Further, before the method described in the present embodiment is performed, UE90 also needs to determine from as candidate relay equipment, specifically, the receiving unit 902, is additionally operable to：

Before transmitting element 901 sends transmission power information, the signal quality threshold information of base station configuration is received；

As shown in Figure 9 A, the UE90 can also include：

Detection unit 903, for according to the signal quality threshold information, the signal quality for detecting the signal that the UE is received to meet preset rules.

Wherein, the signal quality threshold information can include preset signals quality threshold, wherein, preset signals quality threshold can be configured as needed, and contrast of the embodiment of the present invention is without limiting.Optionally, the receiving unit 902 can receive the threshold information for the signal quality that base station is sent by signaling with special or broadcast signaling.

The signal quality that the detection unit 903 detects the signal that the UE is received can include following at least one signal quality：

Or, detect the signal quality from the first UE, such as RSRP, RSRQ, At least one of RSSI, PL.

Optionally, the detection unit 903, the signal quality for detecting the signal that the UE is received specifically for following at least one mode meets preset rules：

From the foregoing, it will be observed that the embodiment of the present invention provides a kind of UE, transmission power information is sent, the transmission power information is：Transmission power deviation information between the second channel that the first channel and the UE that the UE is sent are sent, or the transmission power information of the first channel that the UE is sent；Confirmation is received, wherein, the confirmation is used to indicate that the UE turns into trunking.So, transmission power information for determining trunking is sent to the first UE by UE, to cause the first UE to determine trunking from multiple UE according to the information, the selection of peer-to-peer relay equipment is realized by the first UE, solves and the problem of selection peer device is as trunking is not present in the prior art.

Embodiment seven

Figure 10 is a kind of structure chart of relay selection system provided in an embodiment of the present invention, and as shown in Figure 10, the system can include：UE70, base station 80, N number of UE90；

Wherein, the UE70 and UE described in example IV function phase is same, will not be repeated here；The function phase of the base station 80 and the base station described in embodiment five is same, will not be repeated here；The UE90 and UE described in embodiment six function phase is same, will not be repeated here.

From the foregoing, it will be observed that the embodiment of the present invention provides a kind of trunking selection and system, the first user equipment (UE) obtains each link quality information between UE90 and the UE70 and each UE90 transmission power information in N number of second user equipment UE；Wherein, the transmission power information is：Transmission power information between the second channel that the first channel and the UE90 that the UE90 is sent are sent, or the transmission power information of the first channel that the UE90 is sent；The UE70 is according to each in N number of second user equipment UE The transmission power information of link quality information and each UE90 between UE90 and the UE70, determines the trunking of the UE70 from N number of UE90.In this way, realizing the selection of peer-to-peer relay equipment by UE, solve and the problem of selection peer device is as trunking is not present in the prior art.

In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be realized by another way.For example, apparatus embodiments described above are only schematical, for example, the division of the unit, it is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.Another, it, by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, machinery or other forms that shown or discussed coupling or direct-coupling or communication connection each other, which can be,.

The unit illustrated as separation equipment can be or may not be physically separate, and the equipment shown as unit can be or may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.

In addition, each functional unit in each of the invention embodiment can be integrated in a processing unit or the independent physics of unit includes, can also two or more units it is integrated in a unit.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.

The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are to cause a computer equipment (can be personal computer, server, or network equipment etc.) to perform the part steps of each embodiment methods described of the invention.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various can be with the medium of store program codes.

One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment can be by program to instruct the hardware (such as processor) of correlation to complete, the program can be stored in a computer-readable recording medium, and storage medium can include：Read-only storage, random access memory, disk or CD etc..

Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in foregoing embodiments, or carry out equivalent substitution to which part technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the scope of various embodiments of the present invention technical scheme.

Claims

A kind of trunking system of selection, it is characterised in that methods described includes：

First user equipment (UE) obtains the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；Wherein, the N is the integer more than or equal to 1；The transmission power information of 2nd UE is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

First UE determines the trunking of the first UE according to link quality information and N number of 2nd UE transmission power information between N number of 2nd UE and the first UE from N number of 2nd UE；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the first UE and the 2nd UE is found；The data transfer that the second channel that 2nd UE is sent is used between the first UE and the 2nd UE；Link quality information between 2nd UE and the first UE is that the first UE is obtained by first channel.
According to the method described in claim 1, it is characterised in that the transmission power information for the first channel that the 2nd UE is sent is used for the transmission power level for determining first channel, the transmission power level of first channel is：

The specific transmission power levels of UE, wherein, the specific transmission power levels of UE refer to：The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different；Or,

The specific transmission power level of cell, wherein, the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the 2nd UE in different districts group is different.
According to the method described in claim 1, it is characterised in that the transmission power deviation information is used to determine the transmission power deviation between the first channel of the 2nd UE transmissions and the second channel of the 2nd UE transmissions, and the transmission power deviation is：

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：Transmission power between the first channel and second channel that the 2nd UE of difference is sent Deviation is different, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel；Or,

The specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the 2nd UE in different districts group are different from the transmission power deviation between second channel；Or,

The transmission power deviation associated with the transmission mode of the second channel.
According to the method described in claim 1, it is characterised in that the transmission power information that the first UE obtains the 2nd UE is specifically included：

First UE obtains the transmission power information by the serving BS of the first UE；

Or, the first UE obtains the transmission power information by the 2nd UE；

Or, the first UE obtains the transmission power information by the first UE and/or the 2nd UE reference synchronization source.
Method according to claim 4, it is characterised in that the first UE obtains the transmission power information by the 2nd UE and specifically included：

First UE obtains the transmission power information by the 2nd UE the first channels sent.
Method according to claim 5, it is characterised in that the first channel that the first UE is sent by the 2nd UE obtains the transmission power information and specifically includes following at least one mode：

First UE obtains the transmission power information by the information of first channel bearing；

The CRC CRC masks that use obtain the transmission power information when first UE sends first channel by the 2nd UE；

The demodulated reference signal DMRS that uses obtains the transmission power information when first UE sends first channel by the 2nd UE；

The resource location information that uses obtains the transmission power information when first UE sends first channel by the 2nd UE.
Method according to claim 4, it is characterised in that the first UE obtains the transmission power information by the first UE and/or the 2nd UE reference synchronization source to be included：

The 3rd channel that first UE is sent by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information；3rd channel is：The channel that the first UE and/or the reference synchronization source of the 2nd UE that first UE is received are sent；

Or, the synchronizing sequence that the first UE is sent by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information.
Method according to claim 7, it is characterised in that the 3rd channel that the first UE is sent by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information and specifically includes following at least one mode：

First UE obtains the transmission power information by the information of the 3rd channel bearing；

CRC CRC masks that first UE is used when sending three channel by the first UE and/or the 2nd UE reference synchronization source obtain the transmission power information；

Demodulated reference signal DMRS that first UE is used when sending three channel by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information；

Resource location information that first UE is used when sending three channel by the first UE and/or the 2nd UE reference synchronization source obtains the transmission power information.
Method according to claim any one of 1-8, it is characterised in that after the first UE obtains the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information, methods described also includes：

First UE sends the Link Quality Reports by cellular link to the base station；

Or, the repeated link that the first UE passes through the first UE to the base station The Link Quality Reports are sent to the base station.
Method according to claim 9, it is characterised in that the Link Quality Reports specifically include following at least one information：

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

The link quality information of second channel between N number of 2nd UE and the first UE.
A kind of trunking system of selection, it is characterised in that methods described includes：

Base station obtains the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；Wherein, the N is the integer more than or equal to 1；The transmission power information of 2nd UE is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

The base station determines the trunking of the first UE according to link quality information and N number of 2nd UE transmission power information between N number of second user equipment UE and the first UE from N number of 2nd UE；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the first UE and the 2nd UE is found；The data transfer that the second channel that 2nd UE is sent is used between the first UE and the 2nd UE；2nd UE and the first UE by link quality information be that the first UE is obtained by first channel.
Method according to claim 11, it is characterised in that the transmission power information for the first channel that the 2nd UE is sent is used for the transmission power level for determining first channel, the transmission power level of first channel is：

The specific transmission power levels of UE, wherein, the specific transmission power levels of UE refer to：The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different；Or,

The specific transmission power level of cell, wherein, the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel that the 2nd UE in different districts group is sent It is different.
Method according to claim 11, it is characterised in that the transmission power deviation information is used to determine the transmission power deviation between the first channel of the 2nd UE transmissions and the second channel of the 2nd UE transmissions, and the transmission power deviation is：

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：The first channel that the 2nd UE of difference is sent is different from the transmission power deviation between second channel, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel；Or,

The specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the 2nd UE in different districts group are different from the transmission power deviation between second channel；Or,

The transmission power deviation associated with the transmission mode of the second channel.
Method according to claim 11, it is characterised in that the transmission power information that the base station is obtained between the first channel and the described second second channel sent of the 2nd UE transmissions is specifically included：

By way of signaling between base station the transmission power information is obtained from the serving BS of the 2nd UE；Or,

The transmission power information is read from server；Or,

From server be configured to the storage of the base station in obtain the transmission power information.
Method according to claim any one of 11-14, it is characterised in that obtained in base station before the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information, methods described also includes：

The base station receives the Link Quality Reports that the first UE is sent by cellular link；

Or, the base station receives the Link Quality Reports that the first UE is sent by the first UE to base station repeated link.
Method according to claim 15, it is characterised in that

The Link Quality Reports specifically include following at least one information：

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

The link quality information of second channel between N number of 2nd UE and the first UE.
A kind of trunking system of selection, it is characterised in that methods described includes：

Second user equipment UE sends transmission power information, and the transmission power information is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

The second user equipment UE receives confirmation, wherein, the confirmation is used to indicate that the 2nd UE turns into trunking；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the 2nd UE and the first UE finds that the first UE is the UE for receiving the transmission power information；The data transfer that the second channel that 2nd UE is sent is used between the first UE and the 2nd UE.
Method according to claim 17, it is characterised in that before second user equipment UE sends transmission power information, methods described also includes：

2nd UE receives the signal quality threshold information of base station configuration；

2nd UE is according to the signal quality threshold information, and the signal quality for detecting the signal that the 2nd UE is received meets preset rules.
Method according to claim 17 or 18, it is characterised in that the second user equipment UE, which receives confirmation, to be included：

2nd UE receives the confirmation that the serving BS or the first UE of the 2nd UE are sent.
Method according to claim any one of 17-19, it is characterised in that the transmission power information for the first channel that the 2nd UE is sent is used for the transmission power level for determining first channel, the transmission power level of first channel is：

The specific transmission power levels of UE, wherein, the specific transmission power levels of UE refer to： The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different；Or,

The specific transmission power level of cell, wherein, the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the 2nd UE in different districts group is different.
Method according to claim any one of 17-19, it is characterized in that, the transmission power deviation information is used to determine the transmission power deviation between the first channel of the 2nd UE transmissions and the second channel of the 2nd UE transmissions, and the transmission power deviation is：

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：The first channel that the 2nd UE of difference is sent is different from the transmission power deviation between second channel, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel；Or,

The specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the 2nd UE in different districts group are different from the transmission power deviation between second channel；Or,

The transmission power deviation associated with the transmission mode of the second channel.
Method according to claim 17, it is characterised in that the 2nd UE sends transmission power information and specifically included：

2nd UE sends the transmission power information by the serving BS of the 2nd UE；

Or, the 2nd UE sends the transmission power information by first channel.
Method according to claim 22, it is characterised in that the 2nd UE sends the transmission power information by first channel and specifically includes following at least one mode：

2nd UE sends the transmission power information by the information of first channel bearing；

Or, CRC CRC masks that the 2nd UE is used by first channel send the transmission power information；

Or, demodulated reference signal DMRS that the 2nd UE is used by first channel sends the transmission power information；

Or, resource location information that the 2nd UE is used by first channel sends the transmission power information.
A kind of user equipment (UE), it is characterised in that including：

Acquiring unit, for obtaining the link quality information between N number of second user equipment UE and the UE and N number of 2nd UE transmission power information；Wherein, the N is the integer more than or equal to 1；The transmission power information of 2nd UE is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

Determining unit, for the link quality information and N number of 2nd UE transmission power information between the N number of 2nd UE and UE for being got according to the acquiring unit, determines the trunking of the UE from N number of 2nd UE；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the UE and the 2nd UE is found；The data transfer that the second channel that 2nd UE is sent is used between the UE and the 2nd UE；Link quality information between 2nd UE and UE is that the UE is obtained by first channel.
UE according to claim 24, it is characterised in that the transmission power information for the first channel that the 2nd UE is sent is used for the transmission power level for determining first channel, the transmission power level of first channel is：

The specific transmission power levels of UE, wherein, the specific transmission power levels of UE refer to：The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different；Or,

The specific transmission power level of cell, wherein, the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the 2nd UE in different districts group is different.
UE according to claim 24, it is characterised in that the transmission power deviation information is used to determine the transmission power deviation between the first channel of the 2nd UE transmissions and the second channel of the 2nd UE transmissions, and the transmission power deviation is：

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：The first channel that the 2nd UE of difference is sent is different from the transmission power deviation between second channel, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel；Or,

The specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the 2nd UE in different districts group are different from the transmission power deviation between second channel；Or,

The transmission power deviation associated with the transmission mode of the second channel.
UE according to claim 24, it is characterised in that the acquiring unit specifically for：

The transmission power information is obtained by the serving BS of the UE；

Or, the transmission power information is obtained by the 2nd UE；

Or, the transmission power information is obtained by the UE and/or the 2nd UE reference synchronization source.
UE according to claim 27, it is characterised in that the acquiring unit specifically for：

The transmission power information is obtained by the 2nd UE the first channels sent.
UE according to claim 28, it is characterised in that the acquiring unit by following at least one mode specifically for obtaining the transmission power information：

The transmission power information is obtained by the information of first channel bearing；

The CRC CRC masks that use obtain the transmission power information when sending first channel by the 2nd UE；

The demodulated reference signal DMRS that uses obtains the transmission power information when sending first channel by the 2nd UE；

When sending first channel by the 2nd UE resource location information that uses come Obtain the transmission power information.
UE according to claim 27, it is characterised in that the acquiring unit specifically for：

The 3rd channel sent by the UE and/or the 2nd UE reference synchronization source obtains the transmission power information；3rd channel is：The channel that the UE and/or the reference synchronization source of the 2nd UE that the UE is received are sent；

The synchronizing sequence sent by UE and/or the 2nd UE reference synchronization source obtains the transmission power information.
UE according to claim 30, it is characterised in that the acquiring unit by following at least one mode specifically for obtaining the transmission power information：

The transmission power information is obtained by the information of the 3rd channel bearing；

The CRC CRC masks that are used when sending three channel by the UE and/or the 2nd UE reference synchronization source obtain the transmission power information；

The demodulated reference signal DMRS that is used when sending three channel by the UE and/or the 2nd UE reference synchronization source obtains the transmission power information；

The resource location information that is used when sending three channel by the UE and/or the 2nd UE reference synchronization source obtains the transmission power information.
UE according to claim any one of 24-31, it is characterised in that the UE also includes：

Transmitting element, after the link quality information and N number of 2nd UE transmission power information between N number of 2nd UE and UE of acquiring unit acquisition, the Link Quality Reports are sent by cellular link to the base station；

Or, the Link Quality Reports are sent to the base station by the UE to base station repeated link.
UE according to claim 32, it is characterised in that

The Link Quality Reports specifically include following at least one information：

Link quality information between N number of 2nd UE and UE；

N number of 2nd UE transmission power information；

The link quality information of second channel between the N number of 2nd UE and UE.
A kind of base station, it is characterised in that including：

Acquiring unit, for obtaining the link quality information between N number of second user equipment UE and the first UE and N number of 2nd UE transmission power information；Wherein, the N is the integer more than or equal to 1；The transmission power information of 2nd UE is：Transmission power deviation information between the second channel that the first channel and the 2nd UE that 2nd UE is sent are sent, or the transmission power information of the first channel that the 2nd UE is sent；

Determining unit, for the link quality information and N number of 2nd UE transmission power information between the N number of second user equipment UE got according to the acquiring unit and the first UE, the trunking of the first UE is determined from N number of 2nd UE；

Wherein, the equipment that the first channel that the 2nd UE is sent is used between the first UE and the 2nd UE is found；The data transfer that the second channel that 2nd UE is sent is used between the first UE and the 2nd UE；2nd UE and the first UE by link quality information be that the first UE is obtained by first channel.
Base station according to claim 34, it is characterised in that the transmission power information for the first channel that the 2nd UE is sent is used for the transmission power level for determining first channel, the transmission power level of first channel is：

The specific transmission power levels of UE, wherein, the specific transmission power levels of UE refer to：The transmission power level for the first channel that the 2nd UE of difference is sent is different, or the transmission power level in different groups of the 2nd UE the first channels sent is different；Or,

The specific transmission power level of cell, wherein, the specific transmission power level of cell refers to：The transmission power level for the first channel that the 2nd UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the 2nd UE in different districts group is different.
Base station according to claim 34, it is characterised in that the transmission power deviation information is used to determine the transmission power deviation between the first channel of the 2nd UE transmissions and the second channel of the 2nd UE transmissions, and the transmission power deviation is：

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：Transmission power between the first channel and second channel that the 2nd UE of difference is sent Deviation is different, or the first channel in different groups of the 2nd UE transmissions is different from the transmission power deviation between second channel；Or,

The specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that the 2nd UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the 2nd UE in different districts group are different from the transmission power deviation between second channel；Or,

The transmission power deviation associated with the transmission mode of the second channel.
Base station according to claim 34, it is characterised in that the acquiring unit specifically for：

By way of signaling between base station the transmission power information is obtained from the serving BS of the 2nd UE；Or,

The transmission power information is read from server；Or,

From server be configured to the storage of the base station in obtain the transmission power information.
Base station according to claim any one of 34-37, it is characterised in that the base station also includes：

Receiving unit, for getting the link quality information between N number of 2nd UE and the first UE and N number of 2nd UE transmission power information in acquiring unit before, receive the Link Quality Reports that the first UE is sent by cellular link；

Or, receive the Link Quality Reports that the first UE is sent by the first UE to base station repeated link.
Base station according to claim 38, it is characterised in that

The Link Quality Reports specifically include following at least one information：

Link quality information between N number of 2nd UE and the first UE；

N number of 2nd UE transmission power information；

The link quality information of second channel between N number of 2nd UE and the first UE.
A kind of user equipment (UE), it is characterised in that including：

Transmitting element, for sending transmission power information, the transmission power information is：Institute State UE transmission the first channel and the UE send second channel between transmission power deviation information, or the UE send the first channel transmission power information；

Receiving unit, for receiving confirmation, wherein, the confirmation is used to indicate that the UE turns into trunking；

Wherein, the equipment that the first channel that the UE is sent is used between the UE and the first UE finds that the first UE is the UE for receiving the transmission power information；The data transfer that the second channel that the UE is sent is used between the first UE and UE.
UE according to claim 40, it is characterised in that

The receiving unit, is additionally operable to before second user equipment UE sends transmission power information, receives the signal quality threshold information of base station configuration；

The UE also includes：

Detection unit, for according to the signal quality threshold information, the signal quality for detecting the signal that the UE is received to meet preset rules.
UE according to claim 40 or 41, it is characterised in that the receiving unit, specifically for：

Receive the confirmation that the serving BS or the first UE of the UE are sent.
UE according to claim any one of 40-42, it is characterised in that the transmission power information for the first channel that the UE is sent is used for the transmission power level for determining first channel, the transmission power level of first channel is：

The specific transmission power levels of UE, wherein, the specific transmission power levels of UE refer to：The transmission power level for the first channel that different UE are sent is different, or the transmission power level in different groups of UE the first channels sent is different；Or,

The specific transmission power level of cell, wherein, the specific transmission power level of cell refers to：The transmission power level for the first channel that UE in different districts is sent is different, or the transmission power level of the first channel of the transmissions of the UE in different districts group is different.
UE according to claim any one of 40-42, it is characterised in that the transmission power deviation information is used to determine the transmission power deviation between the first channel of the UE transmissions and the second channel of UE transmissions, and the transmission power deviation is：

The specific transmission power deviations of UE, wherein, the specific transmission power deviations of UE refer to：The first channel that different UE are sent is different from the transmission power deviation between second channel, or the first channel in different groups of UE transmissions is different from the transmission power deviation between second channel；Or,

The specific transmission power deviation of cell, wherein, the specific transmission power deviation of cell refers to：The first channel that UE in different districts is sent is different from the transmission power deviation between second channel, or the first channels for sending of the UE in different districts group are different from the transmission power deviation between second channel；Or,

The transmission power deviation associated with the transmission mode of the second channel.
UE according to claim 40, it is characterised in that the transmitting element, specifically for：

The transmission power information is sent by the serving BS of the UE；

Or, the transmission power information is sent by first channel.
UE according to claim 45, it is characterised in that the transmitting element, the transmission power information is sent especially by following at least one mode：

The transmission power information is sent by the information of first channel bearing；

Or, the CRC CRC masks that are used by first channel send the transmission power information；

Or, the demodulated reference signal DMRS that is used by first channel sends the transmission power information；

Or, the resource location information that is used by first channel sends the transmission power information.