WO2015180296A1 - 一种功率分配的方法及装置 - Google Patents

一种功率分配的方法及装置 Download PDF

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Publication number
WO2015180296A1
WO2015180296A1 PCT/CN2014/086642 CN2014086642W WO2015180296A1 WO 2015180296 A1 WO2015180296 A1 WO 2015180296A1 CN 2014086642 W CN2014086642 W CN 2014086642W WO 2015180296 A1 WO2015180296 A1 WO 2015180296A1
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Prior art keywords
terminal
power
power level
pair
downlink
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PCT/CN2014/086642
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English (en)
French (fr)
Inventor
侯晓辉
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中兴通讯股份有限公司
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Publication of WO2015180296A1 publication Critical patent/WO2015180296A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and apparatus for power allocation.
  • WLAN Voice services over Adaptive Multi-user channels on One Slot
  • GSM Global System for Mobile Communications
  • CS Circuit Switch
  • the basic principle of the evolution scheme is to realize the voice transmission of two users simultaneously under one channel, and the downlink modulation scheme is Aeronautical Quadrature Phase Shift Keying (AQPSK), and the upper two Gaussian filtering
  • AQPSK Aeronautical Quadrature Phase Shift Keying
  • GMSK Gaussian Minimum Shift Keying
  • the VAMOS I and II terminals support the new Training Sequence Set (TSC) Training Sequence Code (TSC), and the VAMOS II terminal supports the transmission of the shifted SAS (Shifted Slow Associated Control Channel), VAMOS.
  • the III terminal has two or more receiving antennas, and the downlink receiving capability is stronger.
  • the in-network users of the GSM system are mostly legacy terminals, and the anti-jamming capability of the legacy terminal is also divided into several levels, that is, a single antenna interference cancellation (NonSAIC, Single Antenna Interference Cancellation) terminal, and interference suppression capability.
  • SAIC terminal a single antenna interference cancellation (NonSAIC, Single Antenna Interference Cancellation) terminal, and interference suppression capability.
  • SAIC terminal there are often many terminals that do not report their actual physical layer capability levels. Therefore, the base station needs to detect the capabilities of the terminal.
  • the physical layer capability of the terminal itself is determined by the base station.
  • the types of terminals currently used for pairing are mainly considered as follows.
  • SAIC The terminal reports as a SAIC terminal, and the base station detects it as SAIC;
  • MuteSAIC The terminal reports as a non-SAIC terminal, and the base station detects it as SAIC after detecting;
  • VAMOS I Supports training sequence set TSC Set2, does not support joint detection of physical layer;
  • VAMOS II Supports the training sequence set TSC Set2, which supports joint detection of the physical layer;
  • VAMOS III Supports training sequence set TSC Set2, supports joint detection of physical layer, 2 antenna reception or more antenna reception;
  • SAIC AFC Auto Frequency Correction
  • NonSAIC The terminal reports as a non-SAIC terminal, and the base station detection is finally determined to be NonSAIC. This type of terminal has no interference suppression capability.
  • Pairing priority Terminal capability of the first candidate user Terminal capability of the second candidate user 1 VAMOS III VAMOS III 2 VAMOS III VAMOS II 3 VAMOS III VAMOS I 4 VAMOS III SAIC 5 SAIC, MuteSAIC VAMOS I 6 SAIC, MuteSAIC VAMOS II 7 VAMOS I VAMOS II 8 SAIC, MuteSAIC SAIC, MuteSAIC 9 VAMOS I VAMOS I 10 VAMOS II VAMOS II 11 SAIC AFC VAMOS I 12 SAIC AFC VAMOS II 13 SAIC AFC VAMOS III
  • the downlink receiving capabilities of different terminals are different, and are ranked as VAMOS III, VAMOS II, VAMOS I and SAIC, SAIC AFC, NonSAIC in order of strong to weak.
  • the base station only relies on the capability of the terminal to perform power control according to the obtained physical layer capability of the terminal, and cannot fully utilize the downlink receiving capability of the terminal, and may not be able to optimize the voice quality of the paired two users.
  • the present invention provides a method and apparatus for power distribution.
  • the embodiment of the invention provides a method and a device for power allocation, which at least solves the problem that the downlink receiving capability of the terminal cannot be utilized to optimize the voice quality of the two paired users in the prior art.
  • a method for power allocation including:
  • a pair of power levels is selected in the generated power level correspondence table, and the transmit powers of the first terminal and the second terminal are adjusted according to the selected pair of power levels.
  • the selecting a pair of power levels in the generated power level correspondence table, and adjusting the transmit powers of the first terminal and the second terminal according to the selected pair of power levels includes:
  • the selecting a pair of power levels in the generated power level correspondence table, and adjusting the transmit powers of the first terminal and the second terminal according to the selected pair of power levels further includes:
  • the second terminal When the first terminal has accessed the downlink channel, and the second terminal does not access the downlink channel, searches for the matched power level in the power level correspondence table according to the search condition, and selects the obtained power level within the obtained power level. a pair of power levels corresponding to a maximum power of the second terminal, and adjusting a transmit power of the first terminal and the second terminal according to the selected pair of power levels;
  • the second terminal accesses the downlink channel, select a pair of power levels in the power level correspondence table according to the power control condition, and adjust the first terminal and the second according to the selected pair of power levels.
  • the transmit power of the terminal After the second terminal accesses the downlink channel, select a pair of power levels in the power level correspondence table according to the power control condition, and adjust the first terminal and the second according to the selected pair of power levels.
  • the transmit power of the terminal After the second terminal accesses the downlink channel, select a pair of power levels in the power level correspondence table according to the power control condition, and adjust the first terminal and the second according to the selected pair of power levels.
  • the search condition comprises any one of the following:
  • a sum of a transmit power of the first terminal and a transmit power of the second terminal is less than or equal to a maximum transmit power of the downlink channel
  • the signal to interference and noise ratio of the first terminal is greater than or equal to a downlink receiving threshold of the first terminal
  • the signal to interference and noise ratio of the second terminal is greater than or equal to a downlink receiving threshold of the second terminal.
  • the power control condition comprises:
  • the transmit power of the terminal with strong downlink receiving capability is lower than the transmit power of the terminal with weak downlink receiving capability.
  • determining that the second terminal accesses the downlink channel comprises one of the following manners:
  • the second terminal adopts the paired access mode by using the SD assignment, determining, according to the received measurement report, that the second terminal has accessed the downlink channel;
  • the second terminal adopts the paired access mode of the handover, determining, according to the received assignment completion signaling or measurement report, that the second terminal has accessed the downlink channel.
  • an apparatus for power distribution including:
  • Generating a power level correspondence table module configured to combine a power level list of the first terminal determined according to a power level of the base station and a transmit power value supported by the carrier frequency, and a power level list of the second terminal to generate a power level correspondence table;
  • the transmit power module is configured to select a pair of power levels in the generated power level correspondence table, and adjust transmit powers of the first terminal and the second terminal according to the selected pair of power levels.
  • the adjusting transmit power module comprises:
  • a first adjusting unit configured to: when the first terminal and the second terminal have accessed the downlink channel, select a pair of power levels in the power level correspondence table according to the power control condition, and according to the selected Adjusting a transmit power of the first terminal and the second terminal by a pair of power levels;
  • the power control condition includes: in the first terminal and the second terminal, a transmitting power of a terminal with strong downlink receiving capability is lower than a transmitting power of a terminal with weak downlink receiving capability.
  • the adjusting the transmit power module further includes:
  • a second adjusting unit configured to: when the first terminal has accessed the downlink channel, and the second terminal does not access the downlink channel, search for the matched power level in the power level correspondence table according to the search condition, and obtain the Selecting, in a power level to be, a pair of power levels corresponding to a power level corresponding to a power level of the second terminal, and adjusting a transmit power of the first terminal and the second terminal according to the selected pair of power levels, and After the second terminal accesses the downlink channel, select a pair of power levels in the power level correspondence table according to the power control condition, and adjust the first terminal and the second according to the selected pair of power levels.
  • the transmit power of the terminal
  • the power control condition includes: in the first terminal and the second terminal, a transmitting power of a terminal with strong downlink receiving capability is lower than a transmitting power of a terminal with weak downlink receiving capability.
  • the search condition comprises any one of the following:
  • a sum of a transmit power of the first terminal and a transmit power of the second terminal is less than or equal to a maximum transmit power of the downlink channel
  • the signal to interference and noise ratio of the first terminal is greater than or equal to a downlink receiving threshold of the first terminal
  • the signal to interference and noise ratio of the second terminal is greater than or equal to a downlink receiving threshold of the second terminal.
  • the generated power level correspondence table module, the adjusted transmission power module, the first adjustment unit, and the second adjustment unit may use a central processing unit (CPU) and digital signal processing when performing processing. (DSP, Digital Singnal Processor) or Programmable Array (FPGA) implementation.
  • CPU central processing unit
  • DSP Digital Singnal Processor
  • FPGA Programmable Array
  • the beneficial effects of the embodiment of the present invention are as follows: the embodiment of the present invention ensures the matching success rate of the VAMOS through reasonable power allocation, and ensures that the coarse power is performed before the normal power control is performed. Assigned to reflect the best power control effect.
  • FIG. 1 is a flowchart of a method for power allocation according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a device for power allocation according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of initial allocation of a downlink channel (Traffic Channel) channel power of a VAMOS user according to the first embodiment of the present invention
  • FIG. 4 is a flowchart of initial allocation of downlink TCH channel power of a VAMOS user according to a second embodiment of the present invention.
  • FIG. 1 is a flowchart of a method for power allocation provided by the present invention. As shown in FIG. 1, the method includes the following steps:
  • Step S101 Combine the power level list of the first terminal and the power level list of the second terminal determined according to the power level of the base station and the transmit power value supported by the carrier frequency to generate a power level correspondence table;
  • Step S102 Select a pair of power levels in the generated power level correspondence table, and adjust transmit powers of the first terminal and the second terminal according to the selected pair of power levels.
  • the selecting a pair of power levels in the generated power level correspondence table, and adjusting the transmit powers of the first terminal and the second terminal according to the selected pair of power levels includes: when When the first terminal and the second terminal have accessed the downlink channel, select a pair of power levels in the power level correspondence table according to the power control condition; and adjust the first terminal according to the selected pair of power levels.
  • the transmission power of the second terminal includes: when When the first terminal and the second terminal have accessed the downlink channel, select a pair of power levels in the power level correspondence table according to the power control condition; and adjust the first terminal according to the selected pair of power levels. The transmission power of the second terminal.
  • the search condition includes: a sum of a transmit power of the first terminal and a transmit power of the second terminal is less than or equal to a maximum transmit power of the downlink channel; and a signal to interference and noise ratio of the first terminal is greater than or equal to a downlink receiving threshold of the first terminal; and a signal to interference and noise ratio of the second terminal is greater than or equal to a downlink receiving threshold of the second terminal.
  • the selecting a pair of power levels in the generated power level correspondence table, and adjusting the transmit powers of the first terminal and the second terminal according to the selected pair of power levels further includes: at the first The terminal has accessed the downlink channel, and when the second terminal does not access the downlink channel, searches for the matched power level in the power level correspondence table according to the search condition, and selects the power of the second terminal within the obtained power level.
  • the power control condition selects a pair of power levels in the power level correspondence table, and adjusts transmit powers of the first terminal and the second terminal according to the selected pair of power levels.
  • the power control condition includes: in the first terminal and the second terminal, a transmitting power of a terminal with strong downlink receiving capability is lower than a transmitting power of a terminal with weak downlink receiving capability.
  • the determining that the second terminal accesses the downlink channel includes one of the following manners: when the When the second terminal adopts the paired access mode of the SD assignment, it is determined that the second terminal has accessed the downlink channel according to the received measurement report; when the second terminal adopts the paired access mode of the handover, according to the second terminal The received assignment completion signaling or measurement report determines that the second terminal has accessed the downlink channel.
  • FIG. 2 is a schematic diagram of a device for power allocation according to the present invention.
  • the method includes: a generated power level correspondence table module 201 configured to determine a power level supported by a base station and a transmit power value supported by a carrier frequency.
  • the power level list of the first terminal and the power level list of the second terminal are combined to generate a power level correspondence table; and the adjusted transmit power module 202 is configured to select a pair of power levels in the generated power level correspondence table, according to the selected one.
  • the transmit power of the first terminal and the second terminal is adjusted for a power level.
  • the adjusting the transmit power module 202 includes: a first adjusting unit, configured to: when the first terminal and the second terminal have accessed the downlink channel, according to the power control condition, in the power level correspondence table Selecting a pair of power levels, and adjusting transmit power of the first terminal and the second terminal according to the selected pair of power levels.
  • the power control condition includes: in the first terminal and the second terminal, a transmitting power of a terminal with strong downlink receiving capability is lower than a transmitting power of a terminal with weak downlink receiving capability.
  • a second adjusting unit configured to: when the first terminal has accessed the downlink channel, and the second terminal does not access the downlink channel, search for the matched power level in the power level correspondence table according to the search condition, and obtain the Selecting, in a power level to be, a pair of power levels corresponding to a power level corresponding to a power level of the second terminal, and adjusting a transmit power of the first terminal and the second terminal according to the selected pair of power levels, and After the second terminal accesses the downlink channel, select a pair of power levels in the power level correspondence table according to the power control condition, and adjust the first terminal and the second according to the selected pair of power levels.
  • the transmit power of the terminal wherein the power control condition includes: in the first terminal and the second terminal, a transmit power of a terminal having a strong downlink receiving capability is lower than a transmit power of a terminal having a weak downlink receiving capability.
  • the search condition of the present invention includes: a sum of a transmit power of the first terminal and a transmit power of the second terminal is less than or equal to a maximum transmit power of the downlink channel; and a signal to interference and noise ratio of the first terminal is greater than or equal to a downlink receiving threshold of the first terminal; and a signal to interference and noise ratio of the second terminal is greater than or equal to a downlink receiving threshold of the second terminal.
  • the paired users of the VAMOS of the present invention always have a relationship of successive accesses, assuming that the terminal that is accessed first is the first terminal, and the terminal that is accessed later is the second terminal, in order to ensure that the second terminal of the second access terminal is in the TCH channel.
  • the present invention adopts the following method.
  • the transmission power for the second terminal satisfies the search condition of the downlink SCPIR (Sub Channel Power Imbalance Ratio) of the first terminal and the second terminal.
  • it is transmitted with its maximum possible transmission power.
  • the search condition includes: a sum of a transmit power of the first terminal and a transmit power of the second terminal is less than or equal to a maximum transmit power of the downlink channel; a signal to interference and noise ratio of the first terminal is greater than or equal to the a downlink receiving threshold of the first terminal; a signal to interference and noise ratio of the second terminal is greater than or equal to a downlink receiving threshold of the second terminal.
  • the specific implementation may be that the downlink transmit power for the second terminal is searched in a direction from small to large, and the search step is set to a minimum interval of downlink power adjustment of the base station, such as 0.5 dB. After the second terminal accesses, the judgment may be performed by using access signaling including assignment or handover.
  • the access completion For the paired access through the SD assignment, it is determined that the access completion must be reported by the measurement report. For paired access by handover, it is determined that the access completion may be based on the assignment completion or the measurement report.
  • the base station receives the measurement report, it can be considered that the second terminal is connected to the TCH channel.
  • the downlink TCH power is redistributed according to the pairing relationship between the first terminal and the second terminal, and the downlink power is allocated according to the downlink power control, and the terminal with the downlink receiving capability is lower than the downlink receiving capability is weak.
  • the initial power allocation after the access is large for the terminal with weak downlink receiving capability.
  • the power allocation after the access is selected in the set that meets the search condition.
  • the power level with the lowest transmit power is PA, and the power level PB of the other user terminal.
  • the downlink connection fed back by the first terminal and the second terminal The receiving quality and the downlink receiving level perform power control on the downlink TCH of the first terminal and the second terminal, and the search condition is only the sum of the total power and the downlink SCPIR receiving threshold of the first terminal and the second terminal.
  • FIG. 3 is a flowchart of initial allocation of downlink TCH channel power of a VAMOS user according to the first embodiment of the present invention.
  • the first terminal is connected to the downlink channel of the single-slot adaptive multi-user voice service VAMOS. And determining, in the case of changing the transmit power of the second terminal to be accessed by the downlink channel, determining whether the second terminal to be accessed by the downlink channel has accessed the downlink channel, and when the first terminal and When the second terminal has accessed the downlink channel, the transmit power of the first terminal and the second terminal are adjusted, which specifically includes the following steps:
  • Step S301 When the base station controller (BSC, Base Station Controller) initiates pairing of new terminals, perform VAMOS pairing;
  • BSC Base Station Controller
  • Step S302 The base station activates the TCH channel for initial power search
  • Step S303 The base station performs power search according to the direction of the new channel power from large to small under the search condition
  • Step S304 The base station determines whether the search is successful.
  • step S305 is performed, and when the search is unsuccessful, the pairing fails.
  • Step S305 the initial pairing of the base station is successful, waiting for the second terminal to access;
  • Step S306 The base station determines whether the second terminal access is successful.
  • step S307 is performed, and when the second terminal access is unsuccessful, the pairing fails.
  • Step S307 The base station queries the pairing relationship and reallocates the power.
  • Step S308 Adjust the transmit power of the first terminal and the second terminal under the base station power control condition.
  • the power control condition includes: in the first terminal and the second terminal, a transmitting power of a terminal with strong downlink receiving capability is lower than a transmitting power of a terminal with weak downlink receiving capability. That is, in all the sets that satisfy the downlink transmission power of the first terminal and the second terminal, according to the downlink receiving capability of the first terminal and the second terminal, the downlink receiving capability is weak as much as possible.
  • the downlink transmission power selected by the terminal is large, and the downlink transmission power selected by the terminal with strong downlink reception capability is small.
  • Embodiment 1 Pairing VAMOS II and VAMOS I
  • the downlink reception threshold of the VAMOS II terminal is SCPIR1
  • the power level of the base station BS, Base Station
  • the level is 0, the BS power level of 1 means that the transmission power is reduced by 0.5 dB, and the minimum power level of 60 means that the transmission power is reduced by 30 dB.
  • the carrier frequency maximum transmit power value be Pmax
  • the BS power level 1 corresponding transmit power value be P1
  • Table 2 Maximum Power Level Correspondence Tables Available to User 1 and User 2 Reusing the Same Time Slot
  • the user 2 according to the plurality of same BS power levels corresponds to the BS power level of one user 1
  • the simplified BS power level of the user 1 and the user 2 corresponds.
  • Table 3 The table is shown in Table 3:
  • the initial channel transmission power level of the terminal is searched, and according to the transmission power level of the VAMOS II terminal that is subsequently accessed, the SCPIR search condition that satisfies the transmission power level of the VAMOS I terminal and the VAMOS II terminal simultaneously selects the largest possible transmission.
  • the downlink TCH power is redistributed according to the pairing relationship between the VAMOS II terminal and the VAMOS I terminal, and the terminal power of the terminal with strong downlink receiving capability is lower than that of the terminal with weak downlink receiving capability.
  • Embodiment 2 VAMOS III and VAMOS I pairing
  • the downlink reception threshold of the VAMOS III terminal is SCPIR1
  • the downlink reception threshold of the VAMOS I terminal is SCPIR2.
  • SCPIR1 -4dB
  • SCPIR2 -8dB
  • -(PB1-PA1)> SCPIR2/0.5
  • the initial of the VAMOS III terminal The channel transmission power level PA1 and the initial channel transmission power level of the VAMOS I terminal are searched, and the SCPIR search condition of the VAMOS I terminal and the VAMOS III terminal's transmission power
  • the transmission power of the terminal with strong downlink receiving capability is lower than the transmission power of the terminal with weak downlink receiving capability, and according to the principle of minimum transmit power for VAMOS III, the downlink is finally selected.
  • the present invention may also consider selecting a compromise and selecting a set intermediate pair.
  • FIG. 4 is a flowchart of initial allocation of downlink TCH channel power of a VAMOS user according to a second embodiment of the present invention.
  • the first terminal is connected to the downlink channel of the single-slot adaptive multi-user voice service VAMOS. If the second terminal of the downlink channel is to be accessed, whether the second terminal to access the downlink channel has accessed the downlink channel, and when the first terminal is When the second terminal has accessed the downlink channel, the transmit power of the first terminal and the second terminal is adjusted, which specifically includes the following steps:
  • Step S401 Perform VAMOS pairing when the BSC initiates pairing of new terminals
  • Step S402 The base station activates the TCH channel.
  • Step S403 The base station determines whether the second terminal to be accessed by the channel has accessed the downlink channel.
  • step S404 If it is determined that the second terminal of the channel to be accessed does not access the downlink channel, the process proceeds to step S404; if it is determined that the second terminal of the channel to be accessed has accessed the downlink channel, the process proceeds to step S405.
  • Step S404 Perform power search according to the channel in the direction of the new channel power according to the new channel power under the search condition under the search condition;
  • Step S405 The base station determines whether the second terminal after adding the transmission power has accessed the downlink channel.
  • step S406 If the base station determines that the second terminal that is to access the channel does not access the downlink channel, the process proceeds to step S407.
  • Step S406 Adjusting the transmit powers of the first terminal and the second terminal under power control conditions
  • the power control condition includes: according to the VAMOS I terminal and the VAMOS III terminal, the transmitting power of the terminal with strong downlink receiving capability is lower than the transmitting power of the terminal with weak downlink receiving capability.
  • Step S407 The access fails, and the current process ends.
  • the present invention has the following technical effects:
  • the invention ensures the VAMOS pairing success rate through reasonable power allocation, and ensures that a rough power allocation is performed before the normal power control is performed to reflect the optimal power control effect.
  • the embodiment of the present invention combines the power level list of the first terminal and the power level list of the second terminal determined according to the power level of the base station and the transmit power value supported by the carrier frequency to generate a power level correspondence table; A pair of power levels is selected, and the transmit powers of the first terminal and the second terminal are adjusted according to the selected pair of power levels.
  • the beneficial effects of the embodiment of the present invention are as follows: the embodiment of the present invention ensures the matching success rate of the VAMOS through reasonable power allocation, and ensures that the coarse power is performed before the normal power control is performed. Assigned to reflect the best power control effect.

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Abstract

本发明公开了一种功率分配的方法及装置，涉及通信技术领域，其方法包括以下步骤：将根据基站的功率等级和载频支持的发射功率值确定的第一终端的功率等级列表和第二终端的功率等级列表合并生成功率等级对应表；在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。

Description

一种功率分配的方法及装置 技术领域
本发明涉及通信技术领域，特别涉及一种功率分配的方法及装置。
背景技术
单时隙自适应多用户语音业务(VAMOS，Voice services over Adaptive Multi-user channels on One Slot)是3GPP确定的全球移动通信系统(GSM，Global System for Mobile Communications)系统针对电路交换(CS，Circuit Switch)的演进方案，其基本原理是在一条信道下同时实现两个用户的语音传输，其下行调制方案为航空四相相移键控(AQPSK，Aeronautical Quadrature Phase Shift Keying)，上行为两个高斯滤波最小频移键控(GMSK，Gaussian Minimum Shift Keying)信号的叠加，根据终端的解调能力不同以及对新的训练序列集合的支持与否，分为legacy终端和VAMOS I终端、VAMOS II终端以及VAMOS III终端。其中VAMOS I和II终端支持新的训练序列集合训练序列码(TSC，Training Sequence Code)Set2，VAMOS II终端支持移位慢速随路控制信道(shifted SACCH，shifted Slow Associated Control Channel)的传输，VAMOS III终端有两根甚至更多根接收天线，下行接收能力更强。
目前GSM系统的在网用户以legacy终端居多，legacy终端的抗干扰能力也分几个级别，即无干扰抑制能力的单天线干扰消除(NonSAIC，Single Antenna Interference Cancellation)终端，以及有干扰抑制能力的SAIC终端。实际上，经常有很多终端存在没有上报自己实际物理层能力等级的情况，因此，基站需要对终端的能力进行检测，最终终端自身的物理层能力以基站检测的为准。
目前用于配对的终端类型，主要考虑了如下几种，
SAIC：终端上报为SAIC终端，基站检测后确定为SAIC；
MuteSAIC：终端上报为非SAIC终端，基站检测后确定为SAIC；
VAMOS I：支持训练序列集合TSC Set2，不支持物理层的联合检测；
VAMOS II：支持训练序列集合TSC Set2，支持物理层的联合检测；
VAMOS III：支持训练序列集合TSC Set2，支持物理层的联合检测，2天线接收或者更多天线接收；
自动频率校正(SAIC AFC，Auto Frequency Correction)：终端上报为SAIC终端，基站检测后确定为SAIC AFC，此类型终端有SAIC能力但是存在频偏问题；
NonSAIC：终端上报为非SAIC终端，基站检测最终确定为NonSAIC，此类型终端无干扰抑制能力。
终端配对时考虑的优先级关系表，如表1所示：
表1终端配对的优先级关系表
配对优先级 第一候选用户的终端能力 第二候选用户的终端能力
1 VAMOS III VAMOS III
2 VAMOS III VAMOS II
3 VAMOS III VAMOS I
4 VAMOS III SAIC
5 SAIC、MuteSAIC VAMOS I
6 SAIC、MuteSAIC VAMOS II
7 VAMOS I VAMOS II
8 SAIC、MuteSAIC SAIC、MuteSAIC
9 VAMOS I VAMOS I
10 VAMOS II VAMOS II
11 SAIC AFC VAMOS I
12 SAIC AFC VAMOS II
13 SAIC AFC VAMOS III
14 SAIC AFC SAIC AFC
15 SAIC AFC SAIC
16 NonSAIC VAMOS III
17 NonSAIC VAMOS II
可以看出，不同终端其下行接收能力是不同的，按从强到弱的顺序排序为VAMOS III，VAMOS II，VAMOS I和SAIC，SAIC AFC，NonSAIC。
因此，基站仅仅依靠对终端的能力进行检测后，根据获得的终端自身的物理层能力来进行功率控制，无法充分利用终端下行接收能力，可能无法使得配对的两用户语音质量达到最优，为解决上述问题，本发明提供了一种功率分配的方法及装置。
发明内容
本发明实施例提供了一种功率分配的方法及装置，至少解决了现有技术中无法利用终端下行接收能力来使得两配对用户的语音质量达到最优的问题。
根据本发明实施例的一个方面，提供了一种功率分配的方法，包括：
将根据基站的功率等级和载频支持的发射功率值确定的第一终端的功率等级列表和第二终端的功率等级列表合并生成功率等级对应表；
在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
优选地，所述的在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率包括：
当所述第一终端和所述第二终端已经接入下行信道时，根据功率控制条件在所述功率等级对应表中选取一对功率等级；
根据所选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
优选地，所述的在所生成的功率等级对应表中选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率还包括：
在所述第一终端已经接入下行信道，所述第二终端未接入下行信道时，根据搜索条件在所述功率等级对应表内搜索匹配的功率等级，在获取到的功率等级内，选取第二终端的功率等级对应的发射功率最大的一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率；
在所述第二终端接入下行信道后，根据功率控制条件在所述功率等级对应表内选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
优选地，所述搜索条件包括以下任意一种：
所述第一终端的发射功率与所述第二终端的发射功率之和小于等于所述下行信道的最大发射功率；
所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；
所述第二终端的信干噪比大于等于所述第二终端的下行接收门限。
优选地，所述功率控制条件包括：
在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
优选地，确定所述第二终端接入下行信道包括以下方式之一：
当所述第二终端采用SD指派进行的配对接入方式时，根据接收到的测量报告确定所述第二终端已经接入所述下行信道；
当所述第二终端采用切换进行的配对接入方式时，根据接收到的指派完成信令或测量报告确定所述第二终端已经接入所述下行信道。
根据本发明实施例的另一方面，提供了一种功率分配的装置，包括：
生成功率等级对应表模块，配置为将根据基站的功率等级和载频支持的发射功率值确定的第一终端的功率等级列表和第二终端的功率等级列表合并生成功率等级对应表；
调整发射功率模块，配置为在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
优选地，所述的调整发射功率模块包括：
第一调整单元，配置为当所述第一终端和所述第二终端已经接入下行信道时，根据功率控制条件在所述功率等级对应表中选取一对功率等级，以及根据所选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率；
其中，所述功率控制条件包括：在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
优选地，所述的调整发射功率模块还包括：
第二调整单元，配置为在所述第一终端已经接入下行信道，所述第二终端未接入下行信道时，根据搜索条件在所述功率等级对应表内搜索匹配的功率等级，在获取到的功率等级内，选取第二终端的功率等级对应的发射功率最大的一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率，以及在所述第二终端接入下行信道后，根据功率控制条件在所述功率等级对应表内选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率；
其中，所述功率控制条件包括：在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
优选地，所述搜索条件包括以下任意一种：
所述第一终端的发射功率与所述第二终端的发射功率之和小于等于所述下行信道的最大发射功率；
所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；
所述第二终端的信干噪比大于等于所述第二终端的下行接收门限。
所述生成功率等级对应表模块、所述调整发射功率模块、所述第一调整单元、所述第二调整单元在执行处理时，可以采用中央处理器(CPU，Central Processing Unit)、数字信号处理器(DSP，Digital Singnal Processor)或可编程逻辑阵列(FPGA，Field－Programmable Gate Array)实现。
与现有技术相比较，采用本发明实施例的有益效果在于：本发明实施例通过合理的功率分配，保证VAMOS的配对成功率，同时保证在进行正常的功率控制之前，先进行一次粗的功率分配，以体现最佳功率控制效果。
附图说明
图1为本发明实施例提供的一种功率分配的方法流程图；
图2为本发明实施例提供的一种功率分配的装置示意图；
图3为本发明第一实施例提供的VAMOS用户下行TCH(Traffic Channel，业务信道)信道功率初始分配流程图；
图4为本发明第二实施例提供的VAMOS用户下行TCH信道功率初始分配流程图。
具体实施方式
以下结合附图对本发明的优选实施例进行详细说明，应当理解，以下所说明的优选实施例仅用于说明和解释本发明，并不用于限定本发明。
图1显示了本发明提供的一种功率分配的方法流程图，如图1所示，包括以下步骤：
步骤S101：将根据基站的功率等级和载频支持的发射功率值确定的第一终端的功率等级列表和第二终端的功率等级列表合并生成功率等级对应表；
步骤S102：在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
具体地说，所述的在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率包括：当所述第一终端和所述第二终端已经接入下行信道时，根据功率控制条件在所述功率等级对应表中选取一对功率等级；根据所选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。其中，所述搜索条件包括：所述第一终端的发射功率与所述第二终端的发射功率之和小于等于所述下行信道的最大发射功率；所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；以及所述第二终端的信干噪比大于等于所述第二终端的下行接收门限。所述的在所生成的功率等级对应表中选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率还包括：在所述第一终端已经接入下行信道，所述第二终端未接入下行信道时，根据搜索条件在所述功率等级对应表内搜索匹配的功率等级，在获取到的功率等级内，选取第二终端的功率等级对应的发射功率最大的一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率；在所述第二终端接入下行信道后，根据功率控制条件在所述功率等级对应表内选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。其中，所述功率控制条件包括：在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
本发明确定所述第二终端接入下行信道包括以下方式之一：当所述第 二终端采用SD指派进行的配对接入方式时，根据接收到的测量报告确定所述第二终端已经接入所述下行信道；当所述第二终端采用切换进行的配对接入方式时，根据接收到的指派完成信令或测量报告确定所述第二终端已经接入所述下行信道。
图2显示了本发明提供的一种功率分配的装置示意图，如图2所示，包括：生成功率等级对应表模块201，配置为将根据基站的功率等级和载频支持的发射功率值确定的第一终端的功率等级列表和第二终端的功率等级列表合并生成功率等级对应表；调整发射功率模块202，配置为在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。其中，所述的调整发射功率模块202包括：第一调整单元，配置为当所述第一终端和所述第二终端已经接入下行信道时，根据功率控制条件在所述功率等级对应表中选取一对功率等级，以及根据所选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。其中，所述功率控制条件包括：在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。第二调整单元，配置为在所述第一终端已经接入下行信道，所述第二终端未接入下行信道时，根据搜索条件在所述功率等级对应表内搜索匹配的功率等级，在获取到的功率等级内，选取第二终端的功率等级对应的发射功率最大的一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率，以及在所述第二终端接入下行信道后，根据功率控制条件在所述功率等级对应表内选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率；其中，所述功率控制条件包括：在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
本发明所述搜索条件包括：所述第一终端的发射功率与所述第二终端的发射功率之和小于等于所述下行信道的最大发射功率；所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；以及所述第二终端的信干噪比大于等于所述第二终端的下行接收门限。
本发明所述VAMOS的配对用户总是存在先后接入的关系，假设先接入的终端为第一终端，后接入的终端为第二终端，为了保证后接入用户第二终端在TCH信道的可靠接入，本发明采用如下方法，接入阶段让针对第二终端的发射功率在同时满足第一终端、第二终端的下行SCPIR(Sub Channel Power Imbalance Ratio，子信道功率比)的搜索条件下，以其尽可能大的发射功率发射。其中，搜索条件包括：所述第一终端的发射功率与所述第二终端的发射功率之和小于等于所述下行信道的最大发射功率；所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；所述第二终端的信干噪比大于等于所述第二终端的下行接收门限。具体实现可以让针对第二终端的下行发射功率按照从小到大的方向进行搜索得到，搜索步长设定为基站的下行功率调整最小间隔，比如0.5dB。第二终端接入以后，可以通过包含指派或切换的接入信令进行判断。对于通过SD指派进行的配对接入，判断接入完成必须以测量报告上报为准。对于通过切换进行的配对接入，判断接入完成可以以指派完成或者测量报告为准。基站收到测量报告，即可认为第二终端在TCH信道接入完成。根据第一终端和第二终端的配对关系，进行下行TCH功率的重新分配，通过下行功率控制，按照下行接收能力强的终端初始功率低于下行接收能力弱的终端进行一次下行功率的分配，保证接入后的初始功率分配，针对下行接收能力弱的终端，发射功率偏大。接入后的功率分配，选择符合搜索条件的集合里面，针对接收能力强的用户终端来说，发射功率最低的功率等级值为PA，以及另外的一个用户终端的功率等级PB。在后续的过程中，通过第一终端和第二终端反馈的下行接 收质量、下行接收电平对第一终端和第二终端的下行TCH进行功率控制，搜索条件仅仅是总功率之和以及第一终端、第二终端的下行SCPIR接收门限即可。
图3显示了本发明第一实施例提供的VAMOS用户下行TCH信道功率初始分配流程图，如图3所示，在单时隙自适应多用户语音业务VAMOS的下行信道上已经接入第一终端，在改变所述待接入下行信道的第二终端的发射功率的情况下，判断待接入所述下行信道的第二终端是否已经接入所述下行信道，并当所述第一终端和所述第二终端已经接入下行信道时，调整所述第一终端和所述第二终端的发射功率，其具体包括以下步骤：
步骤S301：当基站控制器(BSC，Base Station Controller)发起新终端配对时，进行VAMOS配对；
步骤S302：基站激活TCH信道进行初始功率搜索；
步骤S303：基站在搜索条件下按照新信道功率从大到小的方向进行功率搜索；
所述搜索条件包括：所述第一终端的发射功率P1与所述第二终端的发射功率P2之和小于等于所述下行信道的最大发射功率P，即P1+P2<＝P；所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；以及所述第二终端的信干噪比大于等于所述第二终端的下行接收门限，即-(PA1-PB1)>＝SCPIR1/0.5，且-(PB1-PA1)>＝SCPIR2/0.5。
步骤S304：基站判断搜索是否成功；
当搜索成功时进行步骤S305，当搜索不成功时，配对失败。
步骤S305：基站初始配对成功，等待第二终端接入；
步骤S306：基站判断第二终端接入是否成功；
当第二终端接入成功时进行步骤S307，当第二终端接入不成功时，配对失败。
步骤S307：基站查询配对关系，重新分配功率；
步骤S308：基站功率控制条件下调整第一终端和第二终端的发射功率。
所述的功率控制条件包括：在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。也就是说，在所有满足所述第一终端和所述第二终端下行发射功率的集合中，根据所述第一终端和所述第二终端的下行接收能力，尽可能的使下行接收能力弱的终端选取的下行发射功率较大，下行接收能力强的终端选取的下行发射功率较小。
下面以两个具体的实施例来说明本发明的内容：
实施例一：VAMOS II和VAMOS I配对
假设先接入的是用户1为VAMOS I终端，后接入的是用户2为VAMOS II终端。VAMOS II终端下行接收门限为SCPIR1，VAMOS I终端下行接收门限为SCPIR2，其中SCPIR1＝-4dB，SCPIR2＝-4dB，假设基站(BS，Base Station)功率等级是以0.5dB为最小单位，BS最大功率等级为0，BS功率等级为1代表发射功率减少0.5dB，最小功率等级为60代表发射功率减少30dB。设载频最大发射功率值为Pmax，BS功率等级1对应的发射功率值为P1，则
10log(Pmax/P1)＝0.5
Figure PCTCN2014086642-appb-000001
P1＝(1/100.05)Pmax
由此可推，等级m的发射功率值：
Pm＝(1/100.05*m)Pmax
如果复用同一时隙的两用户发射功率等级分布为x，y，则：
Px+Py<＝Pmax
Figure PCTCN2014086642-appb-000002
(1/100.05*x)Pmax+(1/100.05*y)Pmax<＝Pmax
下面是复用同一时隙的用户1和用户2可使用的最大功率等级对应表，如表2所示：
表2：复用同一时隙的用户1和用户2可使用的最大功率等级对应表
Figure PCTCN2014086642-appb-000003
Figure PCTCN2014086642-appb-000004
Figure PCTCN2014086642-appb-000005
根据用户1和用户2的BS功率等级的对用关系，即按照多个相同BS功率等级的用户2对应一个用户1的BS功率等级进行简化，简化后的用户1和用户2的BS功率等级对应表如表3所示：
表3：等级对应简化表
用户1 用户2
BS功率等级 BS功率等级
P0  
P1 P20
P2 P14
P3 P11
P4 P9
P5 P8
P6 P7
P7 P6
P8 P5
P9～P10 P4
P11～P13 P3
P14～P19 P2
P20～P60 P1
对于VAMOS II终端所在信道，假设VAMOS II终端发射功率等级为PB1，按照发射功率等级从小往大的方向搜索，发射功率等级搜索的SCPIR搜索条件为-(PA1-PB1)>＝SCPIR1/0.5，且-(PB1-PA1)>＝SCPIR2/0.5，根据表3用户1和用户2的BS功率等级对应表的关系以及发射功率等级搜索的SCPIR搜索条件进行VAMOS II终端的初始信道发射功率等级PA1和VAMOSI终端的初始信道发射功率等级的搜索，根据后接入的VAMOS II终端的发射功率等级在同时满足VAMOS I终端和VAMOS II终端的发射功率等级搜素的SCPIR搜索条件下，选择尽可能大的发射功率等级，即PB1＝3，PA1＝11。VAMOS II终端接入以后，根据VAMOS II终端和VAMOS I终端的配对关系，进行下行TCH功率的重新分配，通过下行功率控制，按照下行接收能力强的终端初始功率低于下行接收能力弱的终端进行一次下行功率控制。针对本例，由于SCPIR1＝SCPIR2，因此接收能力相同，考虑进行近似的功率等分，取PA2＝6，PB2＝7。
实施例二：VAMOS III和VAMOS I配对
假设先接入的是用户1为VAMOS I终端，后接入的是用户2为VAMOS III终端。VAMOS III终端下行接收门限为SCPIR1，VAMOS I终端下行接收门限为SCPIR2。其中，SCPIR1＝-4dB，SCPIR2＝-8dB，对VAMOS III终端所在信道，假设其发射功率等级为PB1，按照发射功率等级从小往大的方向搜索，发射功率等级搜索条件为-(PA1-PB1)>＝SCPIR1/0.5，且-(PB1-PA1)>＝SCPIR2/0.5，根据表3用户1和用户2的BS功率等级对应表的关系以及发射功率等级搜索的SCPIR搜索条件进行VAMOS III终端的初始信道发射功率等级PA1和VAMOS I终端的初始信道发射功率等级的搜索，根据后接入的VAMOS III终端的发射功率等级在同时满足VAMOS I终端和VAMOS III终端的发射功率等级搜素的SCPIR搜索条件下，选择尽可能大的发射功率等级，即PB1＝3，PA1＝11。VAMOS III终端接入以后，根据VAMOS III终端和 VAMOS I终端的配对关系，进行下行TCH功率的重新分配，通过下行功率控制，按照下行接收能力强的终端初始功率低于下行接收能力弱的终端进行一次下行功率控制。针对本例，由于搜索条件为-(PA2-PB2)>＝-8，且-(PB2-PA2)>＝-16，因此，符合搜索条件的PA2和PB2如下表所示。按照在所述VAMOS I终端和所述VAMOS III终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率，以及根据针对VAMOS III的最小发射功率原则，最终选择下行发射功率PA2＝2，PB2＝14。
PA2 PB2
P2 P14
P3 P11
P4 P9
P5 P8
P6 P7
P7 P6
P8 P5
P9～P10 P4
P11 P3
本发明当搜索发现有多个候选功率等级对时，也可以考虑选择折中，选择集合中间对。
图4显示了本发明第二实施例提供的VAMOS用户下行TCH信道功率初始分配流程图，如图4所示，在单时隙自适应多用户语音业务VAMOS的下行信道上已经接入第一终端，在不改变所述待接入下行信道的第二终端的发射功率的情况下，判断待接入所述下行信道的第二终端是否已经接入所述下行信道，并当所述第一终端和所述第二终端已经接入下行信道时，调整所述第一终端和所述第二终端的发射功率，其具体包括以下步骤：
步骤S401：当BSC发起新终端配对时，进行VAMOS配对；
步骤S402：基站激活TCH信道；
步骤S403：基站判断待接入信道的第二终端是否已经接入下行信道；
若判断待接入信道的第二终端未接入下行信道，则进入步骤S404；若判断待接入信道的第二终端已经接入下行信道，则进入步骤S405。
步骤S404：在搜索条件下，按照所述信道在搜索条件下按照新信道功率从大到小的方向进行功率搜索；
按照所述信道在搜索条件下按照新信道功率从大到小的方向进行待接入信道的第二终端的功率搜索，若搜索成功，则将搜索到的最大发射功率作为待接入信道的第二终端的发射功率；若搜索不成功，则配对失败。
其中，所述搜索条件包括：所述第一终端的发射功率P1与所述第二终端的发射功率P2之和小于等于所述下行信道的最大发射功率P，即P1+P2<＝P；所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；以及所述第二终端的信干噪比大于等于所述第二终端的下行接收门限，即-(PA1-PB1)>＝SCPIR1/0.5，且-(PB1-PA1)>＝SCPIR2/0.5。
步骤S405：基站判断增加发射功率后的第二终端是否已经接入下行信道；
若基站判断待接入信道的第二终端已经接入下行信道，则进入步骤S406：若基站判断待接入信道的第二终端未接入下行信道，则进入步骤S407。
步骤S406：在功率控制条件下，调整第一终端和第二终端的发射功率；
所述功率控制条件包括：按照在所述VAMOS I终端和所述VAMOS III终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
步骤S407：接入失败，结束当前流程。
综上所述，本发明具有以下技术效果：
本发明通过合理的功率分配，保证VAMOS的配对成功率，同时保证在进行正常的功率控制之前，先进行一次粗的功率分配，以体现最佳功率控制效果。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。
工业实用性
本发明实施例将根据基站的功率等级和载频支持的发射功率值确定的第一终端的功率等级列表和第二终端的功率等级列表合并生成功率等级对应表；在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。与现有技术相比较，采用本发明实施例的有益效果在于：本发明实施例通过合理的功率分配，保证VAMOS的配对成功率，同时保证在进行正常的功率控制之前，先进行一次粗的功率分配，以体现最佳功率控制效果。

Claims (10)

  1. 一种功率分配的方法，所述方法包括：
    将根据基站的功率等级和载频支持的发射功率值确定的第一终端的功率等级列表和第二终端的功率等级列表合并生成功率等级对应表；
    在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
  2. 根据权利要求1所述的方法，其中，所述的在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率包括：
    当所述第一终端和所述第二终端已经接入下行信道时，根据功率控制条件在所述功率等级对应表中选取一对功率等级；
    根据所选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
  3. 根据权利要求1所述的方法，其中，所述的在所生成的功率等级对应表中选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率还包括：
    在所述第一终端已经接入下行信道，所述第二终端未接入下行信道时，根据搜索条件在所述功率等级对应表内搜索匹配的功率等级，在获取到的功率等级内，选取第二终端的功率等级对应的发射功率最大的一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率；
    在所述第二终端接入下行信道后，根据功率控制条件在所述功率等级对应表内选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
  4. 根据权利要求3所述的方法，其中，所述搜索条件包括以下任意一 种：
    所述第一终端的发射功率与所述第二终端的发射功率之和小于等于所述下行信道的最大发射功率；
    所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；
    所述第二终端的信干噪比大于等于所述第二终端的下行接收门限。
  5. 根据权利要求2或3所述的方法，其中，所述功率控制条件包括：
    在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
  6. 根据权利要求2或3所述的方法，其中，确定所述第二终端接入下行信道包括以下方式之一：
    当所述第二终端采用SD指派进行的配对接入方式时，根据接收到的测量报告确定所述第二终端已经接入所述下行信道；
    当所述第二终端采用切换进行的配对接入方式时，根据接收到的指派完成信令或测量报告确定所述第二终端已经接入所述下行信道。
  7. 一种功率分配的装置，所述装置包括：
    生成功率等级对应表模块，配置为将根据基站的功率等级和载频支持的发射功率值确定的第一终端的功率等级列表和第二终端的功率等级列表合并生成功率等级对应表；
    调整发射功率模块，配置为在所生成的功率等级对应表中选取一对功率等级，根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率。
  8. 根据权利要求7所述的装置，其中，所述的调整发射功率模块包括：
    第一调整单元，配置为当所述第一终端和所述第二终端已经接入下行信道时，根据功率控制条件在所述功率等级对应表中选取一对功率等级，以及根据所选取到的一对功率等级调整所述第一终端和所述第二终端的发 射功率；
    其中，所述功率控制条件包括：在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
  9. 根据权利要求7所述的装置，其中，所述的调整发射功率模块还包括：
    第二调整单元，配置为在所述第一终端已经接入下行信道，所述第二终端未接入下行信道时，根据搜索条件在所述功率等级对应表内搜索匹配的功率等级，在获取到的功率等级内，选取第二终端的功率等级对应的发射功率最大的一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率，以及在所述第二终端接入下行信道后，根据功率控制条件在所述功率等级对应表内选取一对功率等级，并且根据选取到的一对功率等级调整所述第一终端和所述第二终端的发射功率；
    其中，所述功率控制条件包括：在所述第一终端和所述第二终端中，下行接收能力强的终端的发射功率低于下行接收能力弱的终端的发射功率。
  10. 根据权利要求9所述的装置，其中，所述搜索条件包括以下任意一种：
    所述第一终端的发射功率与所述第二终端的发射功率之和小于等于所述下行信道的最大发射功率；
    所述第一终端的信干噪比大于等于所述第一终端的下行接收门限；
    所述第二终端的信干噪比大于等于所述第二终端的下行接收门限。
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