WO2016061897A1 - 辅助通信的方法及系统、具有基站功能的设备和终端 - Google Patents

辅助通信的方法及系统、具有基站功能的设备和终端 Download PDF

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Publication number
WO2016061897A1
WO2016061897A1 PCT/CN2014/095966 CN2014095966W WO2016061897A1 WO 2016061897 A1 WO2016061897 A1 WO 2016061897A1 CN 2014095966 W CN2014095966 W CN 2014095966W WO 2016061897 A1 WO2016061897 A1 WO 2016061897A1
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WO
WIPO (PCT)
Prior art keywords
terminal
communication
auxiliary
base station
information
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/095966
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English (en)
French (fr)
Inventor
付婷
朱亚军
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Dongguan Yulong Telecommunication Technology Co Ltd
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Dongguan Yulong Telecommunication Technology Co Ltd
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Publication date
Application filed by Dongguan Yulong Telecommunication Technology Co Ltd filed Critical Dongguan Yulong Telecommunication Technology Co Ltd
Priority to EP14904390.3A priority Critical patent/EP3211964B1/en
Publication of WO2016061897A1 publication Critical patent/WO2016061897A1/zh
Priority to US15/458,985 priority patent/US10568105B2/en
Anticipated expiration legal-status Critical
Priority to US16/690,913 priority patent/US10917898B2/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for assisting communication, a system for assisting communication, a device having a base station function, and a terminal.
  • High-speed data transmission has always been one of the important goals pursued by wireless communications.
  • LTE standardization process a method of increasing data transmission rate, such as CoMP (Coordinated Multi-point), CA (Carrier Aggregation), relay (radio relay), and high-order modulation, is proposed.
  • CoMP provides services for users by using the same time-frequency resources in cooperation with several base stations, and turns mutual interference into an effective signal that can be combined and received, thereby increasing the data throughput rate of the user;
  • CA is Aggregate several carriers to increase data throughput in a way that increases total bandwidth;
  • Relay technology is generally considered to be extended coverage, but it also has the effect of improving data throughput;
  • higher-order modulation uses higher-order modulation methods such as 256QAM, etc., allows each symbol to carry more information bits, thereby increasing data throughput.
  • the CoMP technology generally needs an ideal backhaul link between the base stations of the cooperative service to facilitate the information sharing of the users who are cooperatively served.
  • This ideal backhaul link does not exist in many actual scenarios; the CA technology uses bandwidth exchange. Rate, but bandwidth is a scarce resource, and there is not always a surplus or idle bandwidth available;
  • Relay technology requires a dedicated relay site, a traditional relay technology, a relay site to access several users, and its backhaul link (relay and The link between base stations is often a capacity bottleneck; high-order modulation needs to be used when the channel conditions are good, such as when the transceiver is very close and unobstructed.
  • the base station has low transmission power and small coverage, and the small base station may be densely integrated cluster deployment.
  • the UE connected to the small base station is connected.
  • (User Equipment, user equipment) needs to access other small base stations and become edge users.
  • the UE 106 is connected to the base station 102, but After the base station 102 is down, the UE 106 is connected to the base station 104. At this time, the UE 106 is far away from the base station 104 and becomes an edge user. In this scenario, the above mentioned techniques for increasing the data transmission rate may not be available.
  • a suitable CoMP transmission set cannot be found, or an adjacent small base station cannot perform CoMP transmission because the backhaul link is not ideal; there is no carrier resource for CA; there is no relay node in the area; due to the small base station and the user The distance is far, the channel conditions are not sufficient to use high-order modulation, etc., which ultimately results in the UE 106 may not be able to obtain high-speed data services.
  • the present invention is based on at least one of the above technical problems, and proposes a new auxiliary communication scheme, which can accurately determine a terminal that needs to be assisted in communication, avoids the problem of blind communication and waste of communication resources, and can be at the terminal and When the channel quality between the base stations is poor, it is also possible to ensure a high communication quality between the terminal and the base station and a high data transmission rate.
  • the present invention proposes a method for assisting communication of a device having a base station function, comprising: determining whether or not according to a channel quality of a communication channel with any terminal and a data transmission requirement of any one of the terminals It is necessary to provide auxiliary communication for any of the terminals; when it is determined that it is necessary to provide auxiliary communication for any of the terminals, select a designated terminal that establishes a connection with the device having the base station function as an auxiliary for facilitating communication of any one of the terminals. a terminal; communicates with the any terminal through the auxiliary terminal.
  • the terminal avoids the problem of determining the terminal that needs the auxiliary communication based only on the channel quality of the communication channel with the terminal, and blindly assisting and wasting communication resources due to the fact that the terminal has no data or only less data needs to be transmitted, and also avoids The problem of blindly assisting and wasting communication resources is caused by determining the auxiliary terminal only based on the data transmission requirement of the terminal and the channel quality between the terminal and the device having the function of the base station is high.
  • auxiliary terminal that communicates with any terminal, so that channel quality between a terminal having a base station function can be achieved when the channel quality between any of the above terminals and a device having a base station function is poor but there is more data to be transmitted.
  • the better other terminals perform auxiliary communication, thereby improving the communication quality between any of the above terminals and the device having the function of the base station, and ensuring that any of the above terminals has a high data transmission rate.
  • the step of determining whether the auxiliary communication needs to be provided for the any terminal is specifically: the channel quality value of the downlink communication channel between the terminal and the any terminal is less than or equal to the first predetermined value. And determining, when the amount of data to be transmitted to any of the terminals is greater than or equal to a second predetermined value, determining that downlink assistance is required for any of the terminals; and uplink communication channel between the terminal and the any of the terminals.
  • the channel quality value is less than or equal to the third predetermined value, and the amount of data to be sent by the any terminal is greater than or equal to the fourth predetermined value, it is determined that uplink assistance communication needs to be provided for any of the terminals.
  • the channel quality of the downlink communication channel with the terminal is less than or equal to the first predetermined value, it is indicated that the downlink channel quality between the device having the base station function and the terminal is poor, and if the device has the function of the base station If the amount of data to be transmitted to the terminal is large, the data transmission rate between the device having the base station function and the terminal may be improved by means of auxiliary communication; similarly, if the device has a base station function and the uplink channel between the terminal If the quality of the terminal to be transmitted to the device having the function of the base station is large, the data transmission rate between the device having the function of the base station and the terminal can be improved by means of the auxiliary communication.
  • the method further includes: determining, in a data buffer corresponding to the any terminal, an amount of data to be transmitted to the any terminal; and media access control according to any one of the terminals
  • the buffer status report index entry in the layer determines the amount of data to be sent by any of the terminals.
  • the method for determining, by the device having the function of the base station, the quality of the communication channel with the terminal includes: determining, according to channel quality measurement information reported by any terminal, a channel quality value of the downlink communication channel;
  • the transmitted uplink pilot information determines a channel quality value of the uplink communication channel.
  • a designated terminal that provides auxiliary communication for other terminals needs to satisfy the following condition: the designated terminal agrees to assist the any terminal to perform communication, the designated terminal and the base station function
  • the channel quality between the devices and the channel quality between the designated terminal and the any of the terminals are both greater than or equal to a fifth predetermined value. That is, the designated terminal first needs to agree to assist any of the above terminals to communicate, and secondly, the channel quality between the designated terminal and the device having the base station and the channel quality between the terminals providing the auxiliary communication are both high.
  • the method further includes: sending auxiliary communication information to the any terminal and the auxiliary terminal, where
  • the auxiliary communication information includes: a link direction of the auxiliary communication, spectrum information used by the any terminal to communicate with the auxiliary terminal, a time-frequency position of the any terminal or the auxiliary terminal transmitting the discovery signal, and the The scrambling sequence information used by a terminal to communicate with the auxiliary terminal.
  • the auxiliary communication information is transmitted to the auxiliary terminal and the terminal that is assisted in communication, so that the two can determine the link direction of the auxiliary communication, and determine the other party by detecting the discovery signal at the specified time-frequency position, and have
  • the base station functions the device to communicate on the specified spectrum resource, and can determine the scrambling sequence information that both parties scramble the communication information.
  • the method further includes: if it is determined that the downlink auxiliary communication needs to be provided to the any terminal, receiving the Receiving, by the auxiliary terminal, the acknowledgment information that is completed by the any terminal, communicating with the any terminal by using the auxiliary terminal; if it is determined that the uplink auxiliary communication needs to be provided to any of the terminals, receiving the When the acknowledgment information that is established by any terminal and the completion of the establishment of the auxiliary terminal is performed, the auxiliary terminal communicates with any of the terminals.
  • the device having the base station function notifies the terminal that is assisted in communication to detect the discovery signal sent by the auxiliary terminal, and when the terminal that is assisted in communication detects the discovery sent by the auxiliary terminal,
  • the feedback information is sent to the auxiliary terminal, and the auxiliary terminal determines that the connection establishment with the terminal that is assisted communication is completed when receiving the feedback information sent by the terminal that is assisted communication, and sends the connection establishment completion to the device with the base station function.
  • the device having the function of the base station determines to start the auxiliary communication when receiving the information about the completion of the connection establishment sent by the auxiliary terminal; similarly, when the uplink auxiliary communication needs to be provided to the terminal, the device having the function of the base station notifies the auxiliary
  • the terminal detects a discovery signal sent by the terminal that is assisted in communication, and when the auxiliary terminal detects the discovery signal sent by the terminal that is assisted in communication
  • the terminal that is assisted in communication transmits the feedback information
  • the terminal that is assisted in communication determines that the connection establishment with the auxiliary terminal is completed when the feedback information sent by the auxiliary terminal is received, and sends the connection establishment completion to the device having the base station function.
  • Information when the device having the function of the base station receives the information on the completion of the connection establishment transmitted by the terminal that is assisted in communication, it is determined to start the auxiliary communication.
  • a method for terminal assisted communication comprising: receiving notification information sent by a device having a base station function to assist any of the terminals to communicate, and auxiliary communication information;
  • the communication information determines that the terminal needs to assist the any terminal to perform downlink communication
  • the first discovery signal is sent at the first time-frequency location, where the any terminal receives the first discovery signal and sends the first response information;
  • the confirmation information that is established with the any terminal is sent to the device with the function of the base station.
  • the (auxiliary terminal) transmits the discovery signal at the first time-frequency position by receiving the notification information of the auxiliary communication transmitted by the device having the base station function, so that the terminal that is assisted in communication can detect the discovery signal. Then, the terminal that is assisted in communication can establish a connection with the auxiliary terminal to achieve the purpose of auxiliary communication.
  • the method further includes: receiving, when determining, according to the auxiliary communication information, that the terminal is required to perform uplink communication, receiving the second discovery sent by the any terminal at the second time-frequency location Signaling and transmitting second response information to any of the terminals.
  • the terminal that is assisted communication may be determined by detecting the discovery signal sent by other terminals, and then assisted.
  • the terminal of the communication establishes a connection for the purpose of assisting communication.
  • the method further includes: receiving first communication data sent by the device having the base station function, and performing power amplification on the first communication data when the terminal is required to assist the terminal to perform downlink communication. Transmitting to the any terminal, or performing demodulation processing on the first communication data to obtain first demodulated data, and performing the first demodulation according to channel quality between the terminal and any one of the terminals The data is modulated and sent to any of the terminals;
  • Receiving any one of the terminals to transmit when it is required to assist the terminal to perform uplink communication Transmitting, by the second communication data, the second communication data to the device having the function of the base station, or performing demodulation processing on the second communication data to obtain the second demodulated data, and according to The channel quality between the devices having the base station function modulates the second demodulated data and sends the second demodulated data to the device having the function of the base station.
  • the method for determining the first time-frequency position and the second time-frequency position includes the following two methods:
  • Manner 1 The time-frequency position of the first discovery signal notified in the auxiliary communication information is used as the first time-frequency position, and/or the second discovery signal notified in the auxiliary communication information a frequency position as the second time-frequency position;
  • Manner 2 Select a specified time-frequency location as the first time-frequency location and/or the second time-frequency location in a predetermined time-frequency resource.
  • the method before transmitting the first discovery signal, further includes: performing scrambling processing on the first discovery signal by using a scrambling sequence included in the auxiliary communication information.
  • the first discovery signal is scrambled according to the scrambling sequence included in the auxiliary communication information, and only the terminal that is assisted in communication knows the scrambling sequence, thereby ensuring that only the auxiliary communication is supported.
  • the terminal can obtain the discovery signal, and prevent the first discovery signal from being received and fed back by other terminals, so that the auxiliary terminal cannot accurately determine the terminal that is assisted in communication.
  • another method for terminal assisted communication comprising: receiving notification information for assisted communication by a designated terminal and auxiliary communication information transmitted by a device having a base station function; When the communication information determines that the designated terminal assists in uplink communication, transmitting a third discovery signal at the third time-frequency location, where the designated terminal receives the third discovery signal and sends the third response information; When the third response information sent by the terminal is specified, the confirmation information that the establishment of the designated terminal is completed is transmitted to the device having the function of the base station.
  • the terminal (assisted by the communication) transmits the discovery signal at the third time-frequency position by receiving the notification information of the auxiliary communication transmitted by the device having the function of the base station, so that the auxiliary terminal can detect the discovery signal.
  • the auxiliary terminal can establish a connection with the terminal that is assisted in communication to achieve the purpose of auxiliary communication.
  • the method further includes: receiving, according to the auxiliary communication information, the fourth discovery signal sent by the designated terminal at a fourth time-frequency position when the downlink communication is assisted by the designated terminal, And transmitting fourth response information to the designated terminal.
  • the auxiliary terminal when the terminal (assisted communication) determines that the downlink communication needs to be assisted by other terminals, since the auxiliary terminal sends the discovery signal, the auxiliary terminal can be determined by detecting the discovery signal sent by the other terminal, and further The terminal establishes a connection to achieve the purpose of auxiliary communication.
  • a system suitable for device-assisted communication having a base station function comprising: a determining unit for determining a channel quality according to a communication channel with any of the terminals and said any The data transmission requirement of the terminal determines whether it is necessary to provide auxiliary communication for any of the terminals; and the selecting unit is configured to select, when the determining unit determines that the auxiliary communication needs to be provided for the any terminal, the device with the base station function A designated terminal that establishes a connection is used as an auxiliary terminal that assists the communication of any one of the terminals; and a communication unit is configured to communicate with the any of the terminals through the auxiliary terminal.
  • the terminal avoids the problem of determining the terminal that needs the auxiliary communication based only on the channel quality of the communication channel with the terminal, and blindly assisting and wasting communication resources due to the fact that the terminal has no data or only less data needs to be transmitted, and also avoids The problem of blindly assisting and wasting communication resources is caused by determining the auxiliary terminal only based on the data transmission requirement of the terminal and the channel quality between the terminal and the device having the function of the base station is high.
  • the designated terminal is selected as the auxiliary terminal for assisting the communication of any one of the terminals, so that the channel quality between any of the above terminals and the device having the base station function is poor but there is a comparison.
  • the determining unit is configured to: the channel quality value of the downlink communication channel between the terminal and the any terminal is less than or equal to a first predetermined value, and is to be transmitted.
  • the amount of data to any of the terminals is greater than or equal to a second predetermined value, it is determined that downlink assistance communication needs to be provided for any one of the terminals; and the channel quality value of the uplink communication channel between the terminal and the any of the terminals is smaller than Or equal to the third predetermined value, and when the amount of data to be sent by any of the terminals is greater than or equal to the fourth predetermined value, it is determined that uplink assistance communication needs to be provided for any of the terminals.
  • the channel quality of the downlink communication channel with the terminal is less than or equal to the first predetermined value, it is indicated that the downlink channel quality between the device having the base station function and the terminal is poor, and if the device has the function of the base station If the amount of data to be transmitted to the terminal is large, the data transmission rate between the device having the base station function and the terminal may be improved by means of auxiliary communication; similarly, if the device has a base station function and the uplink channel between the terminal If the quality of the terminal to be transmitted to the device having the function of the base station is large, the data transmission rate between the device having the function of the base station and the terminal can be improved by means of the auxiliary communication.
  • the determining unit includes: a first determining unit, configured to determine, in a data buffer corresponding to the any terminal, an amount of data to be transmitted to the any terminal, and use Determining, according to the buffer status report index item in the media access control layer sent by any terminal, the amount of data to be sent by any one of the terminals.
  • the determining unit includes: a second determining unit, configured to determine a channel quality value of the downlink communication channel according to channel quality measurement information reported by any of the terminals, and is used according to the The uplink pilot information sent by any terminal determines a channel quality value of the uplink communication channel.
  • a designated terminal that provides auxiliary communication for other terminals needs to satisfy the condition that the designated terminal agrees to assist the communication of any one of the terminals, the channel quality between the designated terminal and the device having the function of the base station, and the designated terminal
  • the channel quality between any of the terminals is greater than or equal to a fifth predetermined value. That is, the designated terminal first needs to agree to assist any of the above terminals to communicate, and secondly, the channel quality between the designated terminal and the device having the base station and the channel quality between the terminals providing the auxiliary communication are both high.
  • the method further includes: a sending unit, configured to send an auxiliary to the any terminal and the auxiliary terminal before the communication unit communicates with the any terminal by using the auxiliary terminal Communication information, wherein the auxiliary communication information includes: a link direction of the auxiliary communication, spectrum information used by the any terminal to communicate with the auxiliary terminal, and the Any terminal or the auxiliary terminal transmits a time-frequency location of the discovery signal, and the scrambling sequence information used by the any terminal to communicate with the auxiliary terminal.
  • a sending unit configured to send an auxiliary to the any terminal and the auxiliary terminal before the communication unit communicates with the any terminal by using the auxiliary terminal Communication information
  • the auxiliary communication information includes: a link direction of the auxiliary communication, spectrum information used by the any terminal to communicate with the auxiliary terminal, and the Any terminal or the auxiliary terminal transmits a time-frequency location of the discovery signal, and the scrambling sequence information used by the any terminal to communicate with the auxiliary terminal.
  • the auxiliary communication information is transmitted to the auxiliary terminal and the terminal that is assisted in communication, so that the two can determine the link direction of the auxiliary communication, and determine the other party by detecting the discovery signal at the specified time-frequency position, and have
  • the base station functions the device to communicate on the specified spectrum resource, and can determine the scrambling sequence information that both parties scramble the communication information.
  • the communication unit is specifically configured to: if it is determined that the downlink auxiliary communication needs to be provided to any one of the terminals, after receiving the completion of establishment with the any terminal by the auxiliary terminal And confirming the information, communicating with the any terminal by the auxiliary terminal, and if it is determined that the uplink auxiliary communication needs to be provided to the any terminal, establishing, by the any terminal, the establishment with the auxiliary terminal When the confirmation information is completed, communication is performed with the any terminal through the auxiliary terminal.
  • the device having the base station function notifies the terminal that is assisted in communication to detect the discovery signal sent by the auxiliary terminal, and when the terminal that is assisted in communication detects the discovery sent by the auxiliary terminal,
  • the feedback information is sent to the auxiliary terminal, and the auxiliary terminal determines that the connection establishment with the terminal that is assisted communication is completed when receiving the feedback information sent by the terminal that is assisted communication, and sends the connection establishment completion to the device with the base station function.
  • the device having the function of the base station determines to start the auxiliary communication when receiving the information about the completion of the connection establishment sent by the auxiliary terminal; similarly, when the uplink auxiliary communication needs to be provided to the terminal, the device having the function of the base station notifies the auxiliary
  • the terminal detects the discovery signal sent by the terminal that is assisted in communication, and when the auxiliary terminal detects the discovery signal sent by the terminal that is assisted in communication, it sends feedback information to the terminal that is assisted in communication, and the terminal that is assisted in communication receives the discovery signal from the terminal. Feedback and assistance
  • the base station apparatus has a function to send connection establishment completion information, the connection is established with the information of the base station apparatus function sent by the auxiliary terminal receives the communication, determining the communication start assist.
  • a device having a base station function comprising: a system for assisting communication of a device having a base station function as described in any one of the above aspects.
  • a system for terminal assisted communication comprising: a first receiving unit, configured to receive, by a device having a base station function, notification information for assisting any terminal to communicate and auxiliary communication And the first sending unit is configured to receive the first response information sent by the any terminal, where the first sending unit is configured to: when determining, according to the auxiliary communication information, that the terminal is required to perform downlink communication, at the first time-frequency location Transmitting a first discovery signal, where the any one of the terminals receives the first discovery signal and sends the first response information, and is configured to receive, by the first receiving unit, the first When the information is responded to, the confirmation information that the establishment of the terminal is completed is sent to the device having the function of the base station.
  • the (auxiliary terminal) transmits the discovery signal at the first time-frequency position by receiving the notification information of the auxiliary communication transmitted by the device having the base station function, so that the terminal that is assisted in communication can detect the discovery signal. Then, the terminal that is assisted in communication can establish a connection with the auxiliary terminal to achieve the purpose of auxiliary communication.
  • the first receiving unit is further configured to: when determining, according to the auxiliary communication information, that the terminal is required to perform uplink communication, receiving the any at a second time-frequency location a second discovery signal sent by the terminal; the first sending unit is further configured to: when the first receiving unit receives the second discovery signal, send the second response information to any one of the terminals.
  • the terminal that is assisted communication may be determined by detecting the discovery signal sent by other terminals, and then assisted.
  • the terminal of the communication establishes a connection for the purpose of assisting communication.
  • the method further includes: a second receiving unit, configured to receive the first communication data sent by the device with the base station function when the downlink communication needs to be assisted by the any terminal; a unit, configured to perform power amplification processing on the first communication data, or to perform demodulation processing on the first communication data, to obtain first demodulated data, and according to a channel with any one of the terminals Mass processing the first demodulated data; the second transmitting unit is configured to send the data after the power amplification processing by the first processing unit or the data subjected to the modulation processing to the any terminal;
  • a third receiving unit configured to receive when the uplink communication needs to be assisted by any one of the terminals
  • the second communication unit is configured to perform power amplification processing on the second communication data, or to perform demodulation processing on the second communication data to obtain a second solution.
  • the data or the data subjected to the modulation processing is transmitted to the device having the function of the base station.
  • the first receiving unit includes: a first selecting unit, configured to use a time-frequency position of the first discovery signal notified in the auxiliary communication information as the first time-frequency Positioning, and/or using the second discovery signal time-frequency location notified in the auxiliary communication information as the second time-frequency location; or
  • a second selecting unit configured to select the specified time-frequency location as the first time-frequency location and/or the second time-frequency location among predetermined time-frequency resources.
  • the method further includes: a third processing unit, configured to: after the first sending unit sends the first discovery signal, by using a scrambling sequence included in the auxiliary communication information The first discovery signal is scrambled.
  • the first discovery signal is scrambled according to the scrambling sequence included in the auxiliary communication information, and only the terminal that is assisted in communication knows the scrambling sequence, thereby ensuring that only the auxiliary communication is supported.
  • the terminal can obtain the discovery signal, and prevent the first discovery signal from being received and fed back by other terminals, so that the auxiliary terminal cannot accurately determine the terminal that is assisted in communication.
  • another system suitable for terminal assisted communication comprising: a receiving unit, configured to receive notification information and auxiliary communication information that is transmitted by a designated terminal and transmitted by a device having a base station function, And the third unit is configured to receive the third response information that is sent by the designated terminal, and the sending unit is configured to send the third discovery signal at the third time-frequency position when determining, by the designated terminal, that the uplink communication is performed according to the auxiliary communication information, Receiving, by the designated terminal, the third discovery signal and transmitting the third response information, and when the receiving unit receives the third response information sent by the designated terminal, to the base station The functional device transmits confirmation information that the establishment of the specified terminal is completed.
  • the terminal (assisted by the communication) transmits the discovery signal at the third time-frequency position by receiving the notification information of the auxiliary communication transmitted by the device having the base station function.
  • the auxiliary terminal can detect the discovery signal, and the auxiliary terminal can establish a connection with the terminal that is assisted in communication to achieve the purpose of auxiliary communication.
  • the receiving unit is further configured to: when determining, according to the auxiliary communication information, that the downlink communication is assisted by the designated terminal, receiving, by using the designated terminal, the fourth terminal time frequency location a fourth discovery signal; the sending unit is further configured to: when the receiving unit receives the fourth discovery signal, send fourth response information to the designated terminal.
  • the auxiliary terminal when the terminal (assisted communication) determines that the downlink communication needs to be assisted by other terminals, since the auxiliary terminal sends the discovery signal, the auxiliary terminal can be determined by detecting the discovery signal sent by the other terminal, and further The terminal establishes a connection to achieve the purpose of auxiliary communication.
  • a terminal comprising: the system for assisting communication of a terminal according to the sixth aspect, and/or the auxiliary communication applicable to the terminal according to the seventh aspect; system.
  • the terminal that needs to be assisted communication can be accurately determined, the problem of waste of communication resources caused by blind assistance is avoided, and the channel quality between the terminal and the base station can be ensured between the terminal and the base station. It has high communication quality and high data transmission rate.
  • FIG. 1 is a schematic diagram of a communication scenario in the related art
  • FIG. 2 shows a schematic flow diagram of a method for assisted communication for a device having base station functionality, in accordance with an embodiment of the present invention
  • FIG. 3 shows a schematic block diagram of a system suitable for device-assisted communication with base station functionality, in accordance with an embodiment of the present invention
  • FIG. 4 shows a schematic flow diagram of a method suitable for terminal assisted communication in accordance with one embodiment of the present invention
  • FIG. 5 shows a schematic flow chart of a method suitable for terminal assisted communication in accordance with another embodiment of the present invention
  • Figure 6 illustrates a system suitable for terminal assisted communication in accordance with one embodiment of the present invention. Schematic block diagram
  • Figure 7 shows a schematic block diagram of a system suitable for terminal assisted communication in accordance with another embodiment of the present invention.
  • Figure 8 shows a schematic diagram of a communication scenario in accordance with an embodiment of the present invention.
  • Figure 9 shows a schematic flow diagram of a method of assisting communication in accordance with one embodiment of the present invention.
  • FIG. 2 shows a schematic flow diagram of a method suitable for assisted communication of a device having base station functionality, in accordance with an embodiment of the present invention.
  • a method for assisting communication of a device having a base station function includes: Step 202, according to channel quality of a communication channel with any terminal and any of the terminals
  • the data transmission requirement determines whether it is necessary to provide auxiliary communication for any of the terminals; and in step 204, when it is determined that the auxiliary communication needs to be provided for any of the terminals, selecting a designated terminal that establishes a connection with the device having the base station function as an auxiliary
  • the auxiliary terminal that communicates with any of the terminals; and in step 206, the auxiliary terminal communicates with any of the terminals.
  • the terminal avoids the problem of determining the terminal that needs the auxiliary communication based only on the channel quality of the communication channel with the terminal, and blindly assisting and wasting communication resources due to the fact that the terminal has no data or only less data needs to be transmitted, and also avoids
  • the auxiliary terminal is determined only according to the data transmission requirement of the terminal, and the terminal has the function of having the base station
  • the high channel quality between devices causes blind assistance and wastes communication resources.
  • the designated terminal is selected as the auxiliary terminal for assisting the communication of any one of the terminals, so that the channel quality between any of the above terminals and the device having the base station function is poor but there is a comparison.
  • the step of determining whether the auxiliary communication needs to be provided for the any terminal is specifically: the channel quality value of the downlink communication channel between the terminal and the any terminal is less than or equal to the first predetermined value. And determining, when the amount of data to be transmitted to any of the terminals is greater than or equal to a second predetermined value, determining that downlink assistance is required for any of the terminals; and uplink communication channel between the terminal and the any of the terminals.
  • the channel quality value is less than or equal to the third predetermined value, and the amount of data to be sent by the any terminal is greater than or equal to the fourth predetermined value, it is determined that uplink assistance communication needs to be provided for any of the terminals.
  • the channel quality of the downlink communication channel with the terminal is less than or equal to the first predetermined value, it is indicated that the downlink channel quality between the device having the base station function and the terminal is poor, and if the device has the function of the base station If the amount of data to be transmitted to the terminal is large, the data transmission rate between the device having the base station function and the terminal may be improved by means of auxiliary communication; similarly, if the device has a base station function and the uplink channel between the terminal If the quality of the terminal to be transmitted to the device having the function of the base station is large, the data transmission rate between the device having the function of the base station and the terminal can be improved by means of the auxiliary communication.
  • the method further includes: determining, in a data buffer corresponding to the any terminal, an amount of data to be transmitted to the any terminal; and media access control according to any one of the terminals
  • the buffer status report index entry in the layer determines the amount of data to be sent by any of the terminals.
  • the method for determining, by the device having the function of the base station, the quality of the communication channel with the terminal includes: determining, according to channel quality measurement information reported by any terminal, a channel quality value of the downlink communication channel;
  • the transmitted uplink pilot information determines a channel quality value of the uplink communication channel.
  • a designated terminal that provides auxiliary communication for other terminals needs to satisfy the condition that the designated terminal agrees to assist the communication of any one of the terminals, the channel quality between the designated terminal and the device having the function of the base station, and the designated terminal
  • the channel quality between any of the terminals is greater than or equal to a fifth predetermined value. That is, the designated terminal first needs to agree to assist any of the above terminals to communicate, and secondly, the channel quality between the designated terminal and the device having the base station and the channel quality between the terminals providing the auxiliary communication are both high.
  • the method further includes: sending auxiliary communication information to the any terminal and the auxiliary terminal, where
  • the auxiliary communication information includes: a link direction of the auxiliary communication, spectrum information used by the any terminal to communicate with the auxiliary terminal, a time-frequency position of the any terminal or the auxiliary terminal transmitting the discovery signal, and the The scrambling sequence information used by a terminal to communicate with the auxiliary terminal.
  • the auxiliary communication information is transmitted to the auxiliary terminal and the terminal that is assisted in communication, so that the two can determine the link direction of the auxiliary communication, and determine the other party by detecting the discovery signal at the specified time-frequency position, and have
  • the base station functions the device to communicate on the specified spectrum resource, and can determine the scrambling sequence information that both parties scramble the communication information.
  • the method further includes: if it is determined that the downlink auxiliary communication needs to be provided to the any terminal, receiving the Receiving, by the auxiliary terminal, the acknowledgment information that is completed by the any terminal, communicating with the any terminal by using the auxiliary terminal; if it is determined that the uplink auxiliary communication needs to be provided to any of the terminals, receiving the When the acknowledgment information that is established by any terminal and the completion of the establishment of the auxiliary terminal is performed, the auxiliary terminal communicates with any of the terminals.
  • the device having the base station function notifies the terminal that is assisted in communication to detect the discovery signal sent by the auxiliary terminal, and when the terminal that is assisted in communication detects the discovery sent by the auxiliary terminal,
  • the feedback information is sent to the auxiliary terminal, and the auxiliary terminal determines that the connection establishment with the terminal that is assisted communication is completed when receiving the feedback information sent by the terminal that is assisted communication, and sends the connection establishment completion to the device with the base station function.
  • the information when the device having the function of the base station receives the information about the completion of the connection establishment sent by the auxiliary terminal, determines to start the auxiliary communication; similarly, it needs to provide the uplink to the terminal.
  • the device having the function of the base station When assisting communication, notifies the auxiliary terminal to detect the discovery signal sent by the terminal that is assisted in communication, and when the auxiliary terminal detects the discovery signal sent by the terminal that is assisted in communication, it sends feedback information to the terminal that is assisted in communication.
  • the terminal that is assisted in communication determines that the connection establishment with the auxiliary terminal is completed, and transmits the information that the connection establishment is completed to the device having the base station function, and the device having the base station function receives the received When the connection establishment completion information transmitted by the terminal for assisting communication is determined, it is determined that the auxiliary communication is started.
  • FIG. 3 shows a schematic block diagram of a system suitable for device-assisted communication with base station functionality, in accordance with an embodiment of the present invention.
  • a system 300 suitable for device-assisted communication with a base station function includes: a determining unit 302 for determining a channel quality according to a communication channel with any terminal and The data transmission requirement of any terminal determines whether it is necessary to provide auxiliary communication for any of the terminals; and the selecting unit 304 is configured to: when the determining unit 302 determines that the auxiliary communication needs to be provided for the any terminal, select and have the The designated terminal of the base station function establishes a connection as an auxiliary terminal for facilitating communication by any one of the terminals; and the communication unit 306 is configured to communicate with the any terminal by the auxiliary terminal.
  • the terminal avoids the problem of determining the terminal that needs the auxiliary communication based only on the channel quality of the communication channel with the terminal, and blindly assisting and wasting communication resources due to the fact that the terminal has no data or only less data needs to be transmitted, and also avoids The problem of blindly assisting and wasting communication resources is caused by determining the auxiliary terminal only based on the data transmission requirement of the terminal and the channel quality between the terminal and the device having the function of the base station is high.
  • the designated terminal is selected as the auxiliary terminal for assisting the communication of any one of the terminals, so that the channel quality between any of the above terminals and the device having the base station function is poor but there is a comparison.
  • the determining unit 302 is specifically configured to: the channel quality value of the downlink communication channel between the terminal and the any terminal is less than or equal to the first predetermined value, and is to be transmitted to the When the data amount of a terminal is greater than or equal to the second predetermined value, it is determined that downlink assistance communication needs to be provided for any one of the terminals; and the channel quality value of the uplink communication channel between the terminal and the any terminal is less than or equal to the third And determining, when the amount of data to be sent by any of the terminals is greater than or equal to a fourth predetermined value, determining that uplink assistance is required for any one of the terminals.
  • the channel quality of the downlink communication channel with the terminal is less than or equal to the first predetermined value, it is indicated that the downlink channel quality between the device having the base station function and the terminal is poor, and if the device has the function of the base station If the amount of data to be transmitted to the terminal is large, the data transmission rate between the device having the base station function and the terminal may be improved by means of auxiliary communication; similarly, if the device has a base station function and the uplink channel between the terminal If the quality of the terminal to be transmitted to the device having the function of the base station is large, the data transmission rate between the device having the function of the base station and the terminal can be improved by means of the auxiliary communication.
  • the determining unit 302 includes: a first determining unit 3022, configured to determine, in a data buffer corresponding to the any terminal, an amount of data to be transmitted to the any terminal, And determining, according to the buffer status report index item in the media access control layer sent by any terminal, the amount of data to be sent by any one of the terminals.
  • the determining unit 302 includes: a second determining unit 3024, configured to determine, according to channel quality measurement information reported by any of the terminals, a channel quality value of the downlink communication channel, and is used according to The uplink pilot information sent by the any terminal determines a channel quality value of the uplink communication channel.
  • a designated terminal that provides auxiliary communication for other terminals needs to satisfy the condition that the designated terminal agrees to assist the communication of any one of the terminals, the channel quality between the designated terminal and the device having the function of the base station, and the designated terminal
  • the channel quality between any of the terminals is greater than or equal to a fifth predetermined value. That is, the designated terminal first needs to agree to assist any of the above terminals to communicate, and secondly, the channel quality between the designated terminal and the device having the base station and the channel quality between the terminals providing the auxiliary communication are both high.
  • the method further includes: a sending unit 308, configured to: before the communication unit communicates with the any terminal by using the auxiliary terminal, to the any terminal And the auxiliary terminal transmitting the auxiliary communication information, where the auxiliary communication information includes: a link direction of the auxiliary communication, spectrum information used by the any terminal to communicate with the auxiliary terminal, any one of the terminals or the The time-frequency position at which the auxiliary terminal transmits the discovery signal, and the scrambling sequence information used by the any terminal to communicate with the auxiliary terminal.
  • the auxiliary communication information is transmitted to the auxiliary terminal and the terminal that is assisted in communication, so that the two can determine the link direction of the auxiliary communication, and determine the other party by detecting the discovery signal at the specified time-frequency position, and have
  • the base station functions the device to communicate on the specified spectrum resource, and can determine the scrambling sequence information that both parties scramble the communication information.
  • the communication unit 306 is specifically configured to: if it is determined that the downlink auxiliary communication needs to be provided to the any terminal, complete the establishment with the any terminal sent by the auxiliary terminal And confirming the information, communicating with the any terminal by the auxiliary terminal, and if it is determined that the uplink auxiliary communication needs to be provided to the any terminal, receiving the sending of the any terminal and the auxiliary terminal When the completed confirmation information is established, communication is performed with the any terminal through the auxiliary terminal.
  • the device having the base station function notifies the terminal that is assisted in communication to detect the discovery signal sent by the auxiliary terminal, and when the terminal that is assisted in communication detects the discovery sent by the auxiliary terminal,
  • the feedback information is sent to the auxiliary terminal, and the auxiliary terminal determines that the connection establishment with the terminal that is assisted communication is completed when receiving the feedback information sent by the terminal that is assisted communication, and sends the connection establishment completion to the device with the base station function.
  • the device having the function of the base station determines to start the auxiliary communication when receiving the information about the completion of the connection establishment sent by the auxiliary terminal; similarly, when the uplink auxiliary communication needs to be provided to the terminal, the device having the function of the base station notifies the auxiliary
  • the terminal detects the discovery signal sent by the terminal that is assisted in communication, and when the auxiliary terminal detects the discovery signal sent by the terminal that is assisted in communication, it sends feedback information to the terminal that is assisted in communication, and the terminal that is assisted in communication receives the discovery signal from the terminal. Feedback and assistance
  • the base station apparatus has a function to send connection establishment completion information, the connection is established with the information of the base station apparatus function sent by the auxiliary terminal receives the communication, determining the communication start assist.
  • the present invention also proposes a device (not shown) having a base station function, including: A system 300 suitable for auxiliary communication of a device having base station functionality, shown in 3.
  • FIG. 4 shows a schematic flow diagram of a method suitable for terminal assisted communication in accordance with one embodiment of the present invention.
  • a method for terminal assisted communication includes: Step 402: Receive notification information sent by a device having a base station function to assist any terminal to communicate, and auxiliary communication information; 404. When determining, according to the auxiliary communication information, that the terminal is required to perform the downlink communication, send the first discovery signal at the first time-frequency location, where the any terminal receives the first discovery signal and sends the first discovery signal. The first response information is obtained. Step 406: When receiving the first response information sent by the any terminal, send the confirmation information that is established with the any terminal to the device with the base station function.
  • the (auxiliary terminal) transmits the discovery signal at the first time-frequency position by receiving the notification information of the auxiliary communication transmitted by the device having the base station function, so that the terminal that is assisted in communication can detect the discovery signal. Then, the terminal that is assisted in communication can establish a connection with the auxiliary terminal to achieve the purpose of auxiliary communication.
  • the method further includes: receiving, when determining, according to the auxiliary communication information, that the terminal is required to perform uplink communication, receiving the second discovery sent by the any terminal at the second time-frequency location Signaling and transmitting second response information to any of the terminals.
  • the terminal that is assisted communication may be determined by detecting the discovery signal sent by other terminals, and then assisted.
  • the terminal of the communication establishes a connection for the purpose of assisting communication.
  • the method further includes: receiving first communication data sent by the device having the base station function, and performing power amplification on the first communication data when the terminal is required to assist the terminal to perform downlink communication. Transmitting to the any terminal, or performing demodulation processing on the first communication data to obtain first demodulated data, and performing the first demodulation according to channel quality between the terminal and any one of the terminals The data is modulated and sent to any of the terminals;
  • the method for determining the first time-frequency position and the second time-frequency position includes the following two methods:
  • Manner 1 The time-frequency position of the first discovery signal notified in the auxiliary communication information is used as the first time-frequency position, and/or the second discovery signal notified in the auxiliary communication information a frequency position as the second time-frequency position;
  • Manner 2 Select a specified time-frequency location as the first time-frequency location and/or the second time-frequency location in a predetermined time-frequency resource.
  • the method before transmitting the first discovery signal, further includes: performing scrambling processing on the first discovery signal by using a scrambling sequence included in the auxiliary communication information.
  • the first discovery signal is scrambled according to the scrambling sequence included in the auxiliary communication information, and only the terminal that is assisted in communication knows the scrambling sequence, thereby ensuring that only the auxiliary communication is supported.
  • the terminal can obtain the discovery signal, and prevent the first discovery signal from being received and fed back by other terminals, so that the auxiliary terminal cannot accurately determine the terminal that is assisted in communication.
  • FIG. 5 shows a schematic flow diagram of a method suitable for terminal assisted communication in accordance with another embodiment of the present invention.
  • a method for terminal assisted communication includes: Step 502, receiving notification information and auxiliary communication information of a terminal-assisted communication transmitted by a device having a base station function; 504.
  • Step 506 When determining, according to the auxiliary communication information, that the uplink communication is assisted by the designated terminal, sending a third discovery signal at the third time-frequency location, where the designated terminal receives the third discovery signal and sends the third Response information:
  • Step 506 When receiving the third response information sent by the designated terminal, send the confirmation information that is completed with the designated terminal to the device with the base station function.
  • the terminal (assisted by the communication) transmits the discovery signal at the third time-frequency position by receiving the notification information of the auxiliary communication transmitted by the device having the function of the base station, so that the auxiliary terminal can detect the discovery signal.
  • the auxiliary terminal can establish a connection with the terminal that is assisted in communication to achieve the purpose of auxiliary communication.
  • the method further includes: receiving, according to the auxiliary communication information, the fourth discovery signal sent by the designated terminal at a fourth time-frequency position when the downlink communication is assisted by the designated terminal, And transmitting fourth response information to the designated terminal.
  • the auxiliary terminal when the terminal (assisted communication) determines that the downlink communication needs to be assisted by other terminals, since the auxiliary terminal sends the discovery signal, the auxiliary terminal can be determined by detecting the discovery signal sent by the other terminal, and further The terminal establishes a connection to achieve the purpose of auxiliary communication.
  • Figure 6 shows a schematic block diagram of a system suitable for terminal assisted communication in accordance with one embodiment of the present invention.
  • a system 600 for terminal assisted communication includes: a first receiving unit 602, configured to receive notification information sent by a device having a base station function to assist any terminal to communicate And the auxiliary communication information, and is configured to receive the first response information sent by any one of the terminals; the first sending unit 604 is configured to, when determining, according to the auxiliary communication information, that the terminal is required to assist the downlink communication, Transmitting a first discovery signal at a time-frequency location for the terminal to receive the first discovery signal and transmitting the first response information, and for receiving the any terminal at the first receiving unit 602 When the first response information is sent, the confirmation information that the establishment of the terminal is completed is sent to the device having the function of the base station.
  • the (auxiliary terminal) transmits the discovery signal at the first time-frequency position by receiving the notification information of the auxiliary communication transmitted by the device having the base station function, so that the terminal that is assisted in communication can detect the discovery signal. Then, the terminal that is assisted in communication can establish a connection with the auxiliary terminal to achieve the purpose of auxiliary communication.
  • the first receiving unit 602 is further configured to: when determining, according to the auxiliary communication information, that the terminal is required to perform uplink communication, receiving the a second discovery signal sent by any terminal; the first sending unit 604 is further configured to: when the first receiving unit 602 receives the second discovery signal, send the second response information to any one of the terminals .
  • the auxiliary terminal when (the auxiliary terminal) determines that it is necessary to assist other terminals to perform uplink communication, since other terminals may send a discovery signal, it may detect the transmission sent by other terminals. The current signal determines the terminal to be assisted in communication, and thus establishes a connection with the terminal that is assisted in communication to achieve the purpose of auxiliary communication.
  • the method further includes: a second receiving unit 606, configured to receive the first communication data sent by the device with the base station function when the terminal is required to assist the downlink communication;
  • the processing unit 608 is configured to perform power amplification processing on the first communication data, or perform demodulation processing on the first communication data to obtain first demodulated data, and according to the The channel quality is modulated by the first demodulated data;
  • the second transmitting unit 610 is configured to send the data after the power amplification processing by the first processing unit 608 or the data subjected to the modulation processing to the a terminal;
  • the third receiving unit 612 is configured to receive the second communication data sent by the any terminal when the terminal is required to perform the uplink communication, and the second processing unit 614 is configured to perform the second communication data. Power amplification processing, or for performing demodulation processing on the second communication data, to obtain second demodulated data, and performing the second demodulated data according to channel quality between the device having the base station function
  • the third transmission unit 616 is configured to send the data after the power amplification processing by the second processing unit 614 or the data subjected to the modulation processing to the device with the base station function.
  • the first receiving unit 602 includes: a first selecting unit 6022, configured to use a time-frequency position of the first discovery signal notified in the auxiliary communication information as the first a time-frequency location, and/or as the second time-frequency location of the second discovery signal time-frequency location notified in the auxiliary communication information; or
  • the second selecting unit 6024 is configured to select, as the first time-frequency position and/or the second time-frequency position, a predetermined time-frequency position among predetermined time-frequency resources.
  • the method further includes: a third processing unit 616, configured to pass, by using the scrambling sequence pair included in the auxiliary communication information, before the first sending unit 604 sends the first discovery signal
  • the first discovery signal is subjected to a scrambling process.
  • the first discovery signal is scrambled according to the scrambling sequence included in the auxiliary communication information, and only the terminal that is assisted in communication knows the scrambling sequence, thereby ensuring that only the auxiliary communication is supported.
  • the terminal can obtain the discovery signal, and prevent the first discovery signal from being received and fed back by other terminals, so that the auxiliary terminal cannot accurately determine the terminal that is assisted in communication.
  • FIG. 7 shows a schematic block diagram of a system suitable for terminal assisted communication in accordance with another embodiment of the present invention.
  • a system 700 suitable for terminal assisted communication includes: a receiving unit 702, configured to receive notification information and assisted by a specified terminal for transmitting communication by a device having a base station function.
  • the communication information is used to receive the third response information sent by the designated terminal, and the sending unit 704 is configured to send the third time-frequency location when the uplink communication is assisted by the designated terminal according to the auxiliary communication information.
  • a third discovery signal where the specified terminal receives the third discovery signal and sends the third response information, and is used to receive, when the receiving unit 702 receives the third response information sent by the designated terminal, Sending confirmation information that the establishment of the specified terminal is completed to the device having the function of the base station.
  • the terminal (assisted by the communication) transmits the discovery signal at the third time-frequency position by receiving the notification information of the auxiliary communication transmitted by the device having the function of the base station, so that the auxiliary terminal can detect the discovery signal.
  • the auxiliary terminal can establish a connection with the terminal that is assisted in communication to achieve the purpose of auxiliary communication.
  • the receiving unit 702 is further configured to: when the downlink communication is assisted by the designated terminal according to the auxiliary communication information, receive the designated terminal to send at a fourth time-frequency location.
  • the fourth discovery signal is further configured to: when the receiving unit 702 receives the fourth discovery signal, send the fourth response information to the designated terminal.
  • the auxiliary terminal when the terminal (assisted communication) determines that the downlink communication needs to be assisted by other terminals, since the auxiliary terminal sends the discovery signal, the auxiliary terminal can be determined by detecting the discovery signal sent by the other terminal, and further The terminal establishes a connection to achieve the purpose of auxiliary communication.
  • the present invention also proposes a terminal (not shown) comprising: a system 600 suitable for terminal-assisted communication as shown in FIG. 6, and/or an auxiliary communication suitable for the terminal as shown in FIG. System 700.
  • the present invention proposes that the base station 802 finds a suitable auxiliary terminal 804 for the terminal 806 with lower channel conditions and higher data transmission requirements, and the auxiliary terminal 804 forwards data for the terminal 806 to maintain high data transmission. rate.
  • the base station determines whether it is necessary to provide auxiliary communication for the terminal. Specifically, the base station determines whether the communication user (hereinafter referred to as UE1) has low channel quality and high data transmission demand in the uplink/downlink.
  • the method for the base station to determine whether the user has low channel quality may be:
  • the base station can determine whether the downlink channel of the UE1 is low in channel quality;
  • the base station can determine whether the uplink channel of UE1 is low in channel quality.
  • the method for the base station to determine whether the communication user has high data transmission requirements may be:
  • the base station can directly check the amount of data to be transmitted and the QoS (Quality of Service) corresponding to the data in the data buffer of the UE1 to determine whether the UE1 has high data transmission requirements in the downlink direction.
  • QoS Quality of Service
  • the base station side can determine that the UE1 has a high data transmission requirement in the uplink direction according to the BSR index (buffer state report index) in the MAC (Media Access Control) layer sent by the UE1.
  • BSR index buffer state report index
  • MAC Media Access Control
  • the base station determines whether to enable the terminal auxiliary communication service for UE1.
  • the base station may select to enable the terminal auxiliary communication service for the UE1; if the UE1 is not in the low channel quality and high data on any link When the demand status is transmitted, the base station does not enable the terminal auxiliary communication service for UE1.
  • the provisioning terminal auxiliary communication service may be directed to only one link direction. For example, the base station only opens the terminal auxiliary communication service for the UE1 in the downlink direction, but does not open the terminal communication auxiliary service in the uplink direction.
  • the base station selects an auxiliary communication terminal for UE1.
  • the base station selects a suitable auxiliary communication end for the UE1 according to the location information of the UE1. end.
  • the selected auxiliary communication terminal needs to meet the following conditions:
  • the auxiliary communication terminal is a service terminal of the base station
  • the location of the auxiliary communication terminal is appropriate, and the channel conditions between the UE1 and the base station are good.
  • This condition can also be simplified by using the distance between the auxiliary communication terminal and the UE1 and the distance between the auxiliary communication terminal and the base station, that is, when the auxiliary communication terminal is close to the distance between the two, the auxiliary communication can be considered as auxiliary communication.
  • the location of the terminal is appropriate.
  • the base station selects the auxiliary communication terminal, and issues auxiliary communication information to the auxiliary communication terminal (hereinafter referred to as UE2).
  • the signaling includes information such as auxiliary communication link direction information, a spectrum indication used by UE1 to communicate with UE2, a UE2 discovery reference signal time-frequency position indication, and a scrambling sequence indication to be used when UE1 communicates with UE2.
  • the spectrum used by UE1 to communicate with UE2 may be some pre-planned spectrum.
  • UE1 and UE2 may communicate on the D2D spectrum pre-planned by the system.
  • the base station may not notify UE1 and The spectrum indication used by the UE2 communication; the base station can also flexibly allocate spectrum resources for the communication between the UE1 and the UE2. It should be noted that UE1 and UE2 need to be able to support communication on the spectrum of the segment.
  • the reference signal time-frequency position indication is a time-frequency position indication of the discovery signal used by the UE 2, so that the UE2 transmits the discovery reference signal on the specified time-frequency resource, when the time-frequency position of the discovery signal is predefined.
  • the base station may also choose not to transmit the information, and the UE2 may select a certain time-frequency position to transmit the reference signal in the limited set, and receive the discovery reference signal of the opposite end by blind detection.
  • the scrambling sequence that UE1 needs to use when communicating with UE2 is a scrambling sequence for encrypting communication information of UE1 and UE2.
  • the scrambling sequence here may be the C-RNTI (Cell Radio Network Temporary Identifier) of the UE1 or the UE2, or may be the communication process of the UE1 and the UE2 from a certain set of scrambling sequences.
  • the assigned scrambling sequence may be the C-RNTI (Cell Radio Network Temporary Identifier) of the UE1 or the UE2, or may be the communication process of the UE1 and the UE2 from a certain set of scrambling sequences.
  • the assigned scrambling sequence may be the C-RNTI (Cell Radio Network Temporary Identifier) of the UE1 or the UE2, or may be the communication process of the UE1 and the UE2 from a certain set of scrambling sequences.
  • the base station sends the auxiliary communication information to the UE1 to notify the UE1 that the assisted communication state has entered.
  • the signaling includes auxiliary communication link direction information, UE1 Information such as a spectrum indication used for communication with UE2, a time-frequency position indication of a discovery reference signal, and a scrambling sequence to be used when UE1 communicates with UE2.
  • the reference signal time-frequency position indication is a time-frequency position indication of the discovery signal used by the UE 2, so that the UE1 receives the transmission discovery reference signal on the specified time-frequency resource, and the time-frequency position of the discovery signal is predefined.
  • the base station may also choose not to transmit the information, and the UE1 may receive the discovery reference signal of the opposite end by blind detection.
  • UE2 transmits a discovery reference signal at the selected time-frequency location.
  • the discovery reference signal is scrambled using the specified scrambling sequence described above, and UE1 receives and descrambles the discovery reference signal of UE2 at a specified time-frequency location or by blind detection.
  • UE1 After correctly receiving the discovery reference signal of UE2, UE1 feeds back the auxiliary communication response information to UE2.
  • the signal includes a channel quality status indication from UE2 to UE1. This channel quality can be calculated by the discovery reference signal of UE2.
  • UE2 After receiving the auxiliary communication response information fed back by UE1, UE2 considers that the connection between UE2 and UE1 has been established. The UE2 sends the auxiliary communication connection establishment completion information to the base station, and prepares to receive the downlink data sent by the base station.
  • the base station sends the downlink data of the UE1 (the downlink data includes the user data part and the control information part, such as the DCI, etc.) to the UE2, and the UE2 may forward the data of the UE1 to the UE1 as follows:
  • UE2 transmits the received data of UE1 to the UE1;
  • the UE2 demodulates the received data of the UE1, and modulates the data according to the channel quality of the UE2 to the UE1, and adds corresponding control information to send the data to the UE1. In this manner, UE2 needs to obtain information necessary for data demodulation and remodulation of UE1, such as C-RNTI of UE1 and the like.
  • auxiliary communication in the uplink direction is basically the same as the auxiliary communication in the downlink direction, with only a few differences, including:
  • the base station notifies UE1 and UE2 of the discovery reference signal time-frequency position indication of UE1, respectively.
  • UE1 transmits a transmission Now with reference to the signal, UE2 receives the detection discovery reference signal and feeds back the auxiliary communication response information to UE1.
  • the signal includes a channel quality status indication from UE1 to UE2.
  • the UE 1 transmits the auxiliary communication connection establishment completion information to the base station.
  • the above-described uplink/downlink terminal auxiliary communication process can be performed simultaneously or separately.
  • the downlink of UE1 assists in high-speed data communication through UE2, and the uplink directly communicates with the base station.
  • the terminal used as the auxiliary communication needs to be a trusted user and agrees to perform an auxiliary service. This may require the user to sign a contract with the operator in advance, agreeing to perform such an auxiliary communication service, the operator needs to register in the system to perform the auxiliary communication service terminal, and may provide certain reward compensation to the auxiliary communication user.
  • a method for assisting communication includes:
  • Step 902 The base station determines whether the terminal auxiliary communication service is enabled for the UE1, and if yes, performs step 904; otherwise, ends.
  • step 904 the base station searches for a suitable auxiliary communication terminal.
  • step 906 the base station sends the auxiliary communication information to the assisted communication terminal UE1 and the auxiliary communication terminal UE2.
  • step 908 the terminal determines the direction of the auxiliary communication link. If it is the uplink auxiliary communication link, step 918 is performed; if it is the downlink auxiliary communication link, step 910 is performed.
  • Step 910 When it is determined that it is a downlink auxiliary communication link, the UE2 sends a discovery reference signal to the UE1.
  • step 912 the UE1 sends a feedback signal to the UE2.
  • step 914 the UE 2 sends a connection setup signal to the base station.
  • step 916 the UE2 forwards the downlink data sent by the base station to the UE1.
  • Step 918 When it is determined that it is an uplink auxiliary communication link, the UE1 sends a discovery reference signal to the UE2.
  • step 920 UE2 sends a feedback signal to UE1.
  • step 922 the UE1 sends a connection establishment signal to the base station.
  • Step 924 The UE2 forwards the uplink data sent by the UE1 to the base station.
  • the above solution of the present invention utilizes an idle UE as a data forwarding service for a low channel quality UE, and has its specific applicable scenarios and advantages, for example, no special relay node is needed, and when the edged UE cannot find a suitable coordinated transmission node,
  • the terminal can be used to assist in the transmission mode.
  • the present invention proposes a new auxiliary communication scheme, which can accurately determine the terminal that needs to be assisted in communication, avoids the problem of blind communication and waste of communication resources, and can also When the channel quality between the terminal and the base station is poor, it is also possible to ensure a high communication quality and a high data transmission rate between the terminal and the base station.

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Abstract

本发明提供了一种辅助通信的方法及系统、具有基站功能的设备和终端，其中，适用于具有基站功能的设备的辅助通信的方法，包括：根据与任一终端之间的通信信道的信道质量和所述任一终端的数据传输需求判断是否需要为所述任一终端提供辅助通信；在判定需要为所述任一终端提供辅助通信时，选择与所述具有基站功能的设备建立连接的指定终端作为辅助所述任一终端进行通信的辅助终端；通过所述辅助终端与所述任一终端进行通信。本发明的技术方案能够准确确定需要被辅助通信的终端，避免了盲目辅助而造成通信资源浪费的问题，同时可以在终端与基站之间的信道质量较差时，也能够确保终端与基站之间具有较高的通信质量以及较高的数据传输速率。

Description

辅助通信的方法及系统、具有基站功能的设备和终端 技术领域
本发明涉及通信技术领域，具体而言，涉及一种辅助通信的方法、一种辅助通信的系统、一种具有基站功能的设备和一种终端。
背景技术
高速的数据传输一直是无线通信追求的重要目标之一。在LTE的标准化过程中提出了CoMP(Coordinated Multi-point，协作多点)、CA(Carrier Aggregation，载波聚合)、relay(无线中继)、高阶调制等提高数据传输速率的方法。其中，CoMP是在若干个基站协同的使用相同的时频资源为用户提供服务，将相互间的干扰变成了可以进行接收合并的有效信号，以此来增大用户的数据吞吐率；CA是将若干个载波聚合起来，以提升总带宽的方式提升数据吞吐率；Relay技术一般被认为是扩展覆盖，但其同时也有提升数据吞吐量的效果；高阶调制是使用更高阶的调制方式如256QAM等，让每符号承载更多信息比特，以此提升数据吞吐率。
但是，CoMP技术一般需要协同服务的基站之间有理想的回传链路以方便被协同服务的用户的信息共享，这种理想回传链路在很多实际场景下不存在；CA技术使用带宽换速率，但带宽是稀缺资源，并不总是有剩余或空闲带宽可以使用；Relay技术需要专门的relay站点，传统的relay技术，一个relay站点要接入若干用户，其回传链路(relay与基站之间的链路)往往是容量瓶颈；高阶调制需要在信道条件很好的时候才可以采用，例如收发端距离很近且无障碍物时。
在未来超密集网络(Ultra Density Network，UDN)中，基站发送功率低、覆盖范围小，小基站可能是密集成簇部署，若出现某个小基站宕机的情况，连接在该小基站的UE(User Equipment，用户设备)需要接入其他小基站，而成为边缘用户。如图1所示，UE106连接到基站102上，但 在基站102宕机后，UE106连接到了基站104，此时UE106到基站104的距离较远，成为了边缘用户。在该场景中，可能以上提到的提升数据传输速率的技术都不可用。例如，找不到合适的CoMP传输集合，或者相邻的小基站由于回传链路不理想无法进行CoMP传输；没有可进行CA的载波资源；所在区域没有relay节点；由于小基站与用户间的距离较远，信道条件并不足以使用高阶调制等，最终导致UE106可能无法获得高速的数据服务。
因此，如何在终端与基站之间的信道质量较差时，也能够确保终端与基站之间具有较高的通信质量成为亟待解决的技术问题。
发明内容
本发明正是基于上述技术问题至少之一，提出了一种新的辅助通信的方案，能够准确确定需要被辅助通信的终端，避免了盲目辅助而造成通信资源浪费的问题，同时可以在终端与基站之间的信道质量较差时，也能够确保终端与基站之间具有较高的通信质量以及较高的数据传输速率。
有鉴于此，本发明提出了一种适用于具有基站功能的设备的辅助通信的方法，包括：根据与任一终端之间的通信信道的信道质量和所述任一终端的数据传输需求判断是否需要为所述任一终端提供辅助通信；在判定需要为所述任一终端提供辅助通信时，选择与所述具有基站功能的设备建立连接的指定终端作为辅助所述任一终端进行通信的辅助终端；通过所述辅助终端与所述任一终端进行通信。
在该技术方案中，通过根据与任一终端之间的通信信道的信道质量和该任一终端的数据传输需求判断是否需要为该任一终端提供辅助通信，使得能够准确地确定需要进行辅助通信的终端，避免了仅仅根据与终端之间的通信信道的信道质量确定需要辅助通信的终端而由于该终端没有数据或仅有较少数据需要传输造成盲目辅助、浪费通信资源的问题，同时也避免了仅仅根据终端的数据传输需求确定辅助终端而该终端与具有基站功能的设备之间的信道质量较高造成盲目辅助、浪费通信资源的问题。
而通过在需要为任一终端提供辅助通信时，选择指定终端作为辅助该 任一终端进行通信的辅助终端，使得在上述任一终端与具有基站功能的设备之间的信道质量较差但是有较多数据需要传输时，能够通过与具有基站功能的设备之间的信道质量较好的其他终端进行辅助通信，进而提高了上述任一终端与具有基站功能的设备之间的通信质量，确保上述任一终端具有较高的数据传输速率。
在上述技术方案中，优选地，判断是否需要为所述任一终端提供辅助通信的步骤具体为：在与所述任一终端之间的下行通信信道的信道质量值小于或等于第一预定值，且待传送至所述任一终端的数据量大于或等于第二预定值时，判定需要为所述任一终端提供下行辅助通信；以及在与所述任一终端之间的上行通信信道的信道质量值小于或等于第三预定值，且所述任一终端待发送的数据量大于或等于第四预定值时，判定需要为所述任一终端提供上行辅助通信。
在该技术方案中，当与终端之间的下行通信信道的信道质量小于或等于第一预定值时，说明具有基站功能的设备与终端之间的下行信道质量较差，若具有基站功能的设备待传送至该终端的数据量较大，则可以通过辅助通信的方式提高具有基站功能的设备与该终端之间的数据传输速率；类似地，若具有基站功能的设备与终端之间的上行信道质量较差，且该终端待传送至具有基站功能的设备的数据量较大，则可以通过辅助通信的方式提高具有基站功能的设备与该终端之间的数据传输速率。
在上述技术方案中，优选地，还包括：在与所述任一终端对应的数据缓冲区中确定待传送至所述任一终端的数据量；以及根据所述任一终端发送的媒体访问控制层中的缓冲区状态报告索引项确定所述任一终端待发送的数据量。
其中，具有基站功能的设备确定与终端之间的通信信道质量的方式包括：根据所述任一终端上报的信道质量测量信息确定所述下行通信信道的信道质量值；以及根据所述任一终端发送的上行导频信息确定所述上行通信信道的信道质量值。
为其他终端提供辅助通信的指定终端需要满足以下条件：所述指定终端同意辅助所述任一终端进行通信、所述指定终端与所述具有基站功能的 设备之间的信道质量以及所述指定终端与所述任一终端之间的信道质量均大于或等于第五预定值。即该指定终端首先需要同意辅助上述任一终端进行通信，其次该指定终端与具有基站的设备之间的信道质量以及与被提供辅助通信的终端之间的信道质量均较高。
在上述技术方案中，优选地，在通过所述辅助终端与所述任一终端进行通信的步骤之前，还包括：向所述任一终端和所述辅助终端发送辅助通信信息，其中，所述辅助通信信息包括：辅助通信的链路方向、所述任一终端与所述辅助终端通信所使用的频谱信息、所述任一终端或所述辅助终端发送发现信号的时频位置、所述任一终端与所述辅助终端通信所使用的加扰序列信息。
在该技术方案中，通过向辅助终端和被辅助通信的终端发送辅助通信信息，使得二者能够确定辅助通信的链路方向，并在指定的时频位置通过检测发现信号确定对方，以及在具有基站功能的设备指定的频谱资源上进行通信，且能够确定双方对通信信息进行加扰的加扰序列信息。
在上述技术方案中，优选地，在向所述任一终端和所述辅助终端发送辅助通信信息之后，还包括：若确定需要向所述任一终端提供下行辅助通信，则在接收到所述辅助终端发送的与所述任一终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信；若确定需要向所述任一终端提供上行辅助通信，则在接收到所述任一终端发送的与所述辅助终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信。
在该技术方案中，由于在需要向终端提供下行辅助通信时，具有基站功能的设备会通知被辅助通信的终端检测辅助终端发送的发现信号，当被辅助通信的终端检测到辅助终端发送的发现信号时，会向辅助终端发送反馈信息，辅助终端在接收到被辅助通信的终端发送的反馈信息时确定与被辅助通信的终端之间的连接建立完成，向具有基站功能的设备发送连接建立完成的信息，则具有基站功能的设备在接收到辅助终端发送的连接建立完成的信息时，确定开始进行辅助通信；类似地，在需要向终端提供上行辅助通信时，具有基站功能的设备会通知辅助终端检测被辅助通信的终端发送的发现信号，当辅助终端检测到被辅助通信的终端发送的发现信号 时，会向被辅助通信的终端发送反馈信息，被辅助通信的终端在接收到辅助终端发送的反馈信息时确定与辅助终端之间的连接建立完成，向具有基站功能的设备发送连接建立完成的信息，则具有基站功能的设备在接收到被辅助通信的终端发送的连接建立完成的信息时，确定开始进行辅助通信。
根据本发明的第二方面，还提出了一种适用于终端辅助通信的方法，包括：接收具有基站功能的设备发送的辅助任一终端进行通信的通知信息以及辅助通信信息；在根据所述辅助通信信息确定需要辅助所述任一终端进行下行通信时，在第一时频位置发送第一发现信号，以供所述任一终端接收所述第一发现信号并发送第一响应信息；在接收到所述任一终端发送的所述第一响应信息时，向所述具有基站功能的设备发送与所述任一终端建立完成的确认信息。
在该技术方案中，(辅助终端)通过在接收到具有基站功能的设备发送的辅助通信的通知信息时，在第一时频位置发送发现信号，使得被辅助通信的终端能够检测到该发现信号，进而被辅助通信的终端能够与辅助终端建立连接，以实现辅助通信的目的。
在上述技术方案中，优选地，还包括：在根据所述辅助通信信息确定需要辅助所述任一终端进行上行通信时，在第二时频位置上接收所述任一终端发送的第二发现信号，并向所述任一终端发送第二响应信息。
在该技术方案中，当(辅助终端)确定需要辅助其他终端进行上行通信时，由于其他终端会发送发现信号，则可以通过检测其他终端发送的发现信号确定被辅助通信的终端，进而与被辅助通信的终端建立连接实现辅助通信的目的。
在上述技术方案中，优选地，还包括：在需要辅助所述任一终端进行下行通信时，接收所述具有基站功能的设备发送的第一通信数据，对所述第一通信数据进行功率放大处理后发送至所述任一终端，或对所述第一通信数据进行解调处理，得到第一解调数据，并根据与所述任一终端之间的信道质量对所述第一解调数据进行调制后发送至所述任一终端；以及
在需要辅助所述任一终端进行上行通信时，接收所述任一终端发送的 第二通信数据，对所述第二通信数据进行功率放大处理后发送至所述具有基站功能的设备，或对所述第二通信数据进行解调处理，得到第二解调数据，并根据与所述具有基站功能的设备之间的信道质量对所述第二解调数据进行调制后发送至所述具有基站功能的设备。
其中，确定上述第一时频位置和上述第二时频位置的方法包括以下两种方式：
方式一：将所述辅助通信信息中通知的所述第一发现信号的时频位置作为所述第一时频位置，和/或将所述辅助通信信息中通知的所述第二发现信号时频位置作为所述第二时频位置；
方式二：在预定的时频资源中选择指定时频位置作为所述第一时频位置和/或所述第二时频位置。
在上述技术方案中，优选地，在发送所述第一发现信号之前，还包括：通过所述辅助通信信息中包含的加扰序列对所述第一发现信号进行加扰处理。
在该技术方案中，通过根据辅助通信信息中包含的加扰序列对第一发现信号进行加扰处理，而仅有被辅助通信的终端才知道该加扰序列，进而可以保证仅有被辅助通信的终端才能获取到发现信号，避免第一发现信号被其他终端接收并反馈而造成辅助终端无法准确判定被辅助通信的终端。
根据本发明的第三方面，还提出了另一种适用于终端辅助通信的方法，包括：接收具有基站功能的设备发送的由指定终端辅助通信的通知信息以及辅助通信信息；在根据所述辅助通信信息确定由所述指定终端辅助进行上行通信时，在第三时频位置发送第三发现信号，以供所述指定终端接收所述第三发现信号并发送第三响应信息；在接收到所述指定终端发送的所述第三响应信息时，向所述具有基站功能的设备发送与所述指定终端建立完成的确认信息。
在该技术方案中，(被辅助通信的终端)通过在接收到具有基站功能的设备发送的辅助通信的通知信息时，在第三时频位置发送发现信号，使得辅助终端能够检测到该发现信号，进而辅助终端能够与被辅助通信的终端建立连接，以实现辅助通信的目的。
在上述技术方案中，优选地，还包括：在根据所述辅助通信信息确定由所述指定终端辅助进行下行通信时，在第四时频位置上接收所述指定终端发送的第四发现信号，并向所述指定终端发送第四响应信息。
在该技术方案中，当(被辅助通信的终端)确定需要被其他终端辅助进行下行通信时，由于辅助终端会发送发现信号，则可以通过检测其他终端发送的发现信号确定辅助终端，进而与辅助终端建立连接实现辅助通信的目的。
根据本发明的第四方面，还提了一种适用于具有基站功能的设备辅助通信的系统，包括：判断单元，用于根据与任一终端之间的通信信道的信道质量和所述任一终端的数据传输需求判断是否需要为所述任一终端提供辅助通信；选择单元，用于在所述判断单元判定需要为所述任一终端提供辅助通信时，选择与所述具有基站功能的设备建立连接的指定终端作为辅助所述任一终端进行通信的辅助终端；通信单元，用于通过所述辅助终端与所述任一终端进行通信。
在该技术方案中，通过根据与任一终端之间的通信信道的信道质量和该任一终端的数据传输需求判断是否需要为该任一终端提供辅助通信，使得能够准确地确定需要进行辅助通信的终端，避免了仅仅根据与终端之间的通信信道的信道质量确定需要辅助通信的终端而由于该终端没有数据或仅有较少数据需要传输造成盲目辅助、浪费通信资源的问题，同时也避免了仅仅根据终端的数据传输需求确定辅助终端而该终端与具有基站功能的设备之间的信道质量较高造成盲目辅助、浪费通信资源的问题。
而通过在需要为任一终端提供辅助通信时，选择指定终端作为辅助该任一终端进行通信的辅助终端，使得在上述任一终端与具有基站功能的设备之间的信道质量较差但是有较多数据需要传输时，能够通过与具有基站功能的设备之间的信道质量较好的其他终端进行辅助通信，进而提高了上述任一终端与具有基站功能的设备之间的通信质量，确保上述任一终端具有较高的数据传输速率。
在上述技术方案中，优选地，所述判断单元具体用于：在与所述任一终端之间的下行通信信道的信道质量值小于或等于第一预定值，且待传送 至所述任一终端的数据量大于或等于第二预定值时，判定需要为所述任一终端提供下行辅助通信；以及在与所述任一终端之间的上行通信信道的信道质量值小于或等于第三预定值，且所述任一终端待发送的数据量大于或等于第四预定值时，判定需要为所述任一终端提供上行辅助通信。
在该技术方案中，当与终端之间的下行通信信道的信道质量小于或等于第一预定值时，说明具有基站功能的设备与终端之间的下行信道质量较差，若具有基站功能的设备待传送至该终端的数据量较大，则可以通过辅助通信的方式提高具有基站功能的设备与该终端之间的数据传输速率；类似地，若具有基站功能的设备与终端之间的上行信道质量较差，且该终端待传送至具有基站功能的设备的数据量较大，则可以通过辅助通信的方式提高具有基站功能的设备与该终端之间的数据传输速率。
在上述技术方案中，优选地，所述判断单元包括：第一确定单元，用于在与所述任一终端对应的数据缓冲区中确定待传送至所述任一终端的数据量，并用于根据所述任一终端发送的媒体访问控制层中的缓冲区状态报告索引项确定所述任一终端待发送的数据量。
在上述技术方案中，优选地，所述判断单元包括：第二确定单元，用于根据所述任一终端上报的信道质量测量信息确定所述下行通信信道的信道质量值，并用于根据所述任一终端发送的上行导频信息确定所述上行通信信道的信道质量值。
为其他终端提供辅助通信的指定终端需要满足以下条件：所述指定终端同意辅助所述任一终端进行通信、所述指定终端与所述具有基站功能的设备之间的信道质量以及所述指定终端与所述任一终端之间的信道质量均大于或等于第五预定值。即该指定终端首先需要同意辅助上述任一终端进行通信，其次该指定终端与具有基站的设备之间的信道质量以及与被提供辅助通信的终端之间的信道质量均较高。
在上述技术方案中，优选地，还包括：发送单元，用于在所述通信单元通过所述辅助终端与所述任一终端进行通信之前，向所述任一终端和所述辅助终端发送辅助通信信息，其中，所述辅助通信信息包括：辅助通信的链路方向、所述任一终端与所述辅助终端通信所使用的频谱信息、所述 任一终端或所述辅助终端发送发现信号的时频位置、所述任一终端与所述辅助终端通信所使用的加扰序列信息。
在该技术方案中，通过向辅助终端和被辅助通信的终端发送辅助通信信息，使得二者能够确定辅助通信的链路方向，并在指定的时频位置通过检测发现信号确定对方，以及在具有基站功能的设备指定的频谱资源上进行通信，且能够确定双方对通信信息进行加扰的加扰序列信息。
在上述技术方案中，优选地，所述通信单元具体用于：若确定需要向所述任一终端提供下行辅助通信，则在接收到所述辅助终端发送的与所述任一终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信，以及若确定需要向所述任一终端提供上行辅助通信，则在接收到所述任一终端发送的与所述辅助终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信。
在该技术方案中，由于在需要向终端提供下行辅助通信时，具有基站功能的设备会通知被辅助通信的终端检测辅助终端发送的发现信号，当被辅助通信的终端检测到辅助终端发送的发现信号时，会向辅助终端发送反馈信息，辅助终端在接收到被辅助通信的终端发送的反馈信息时确定与被辅助通信的终端之间的连接建立完成，向具有基站功能的设备发送连接建立完成的信息，则具有基站功能的设备在接收到辅助终端发送的连接建立完成的信息时，确定开始进行辅助通信；类似地，在需要向终端提供上行辅助通信时，具有基站功能的设备会通知辅助终端检测被辅助通信的终端发送的发现信号，当辅助终端检测到被辅助通信的终端发送的发现信号时，会向被辅助通信的终端发送反馈信息，被辅助通信的终端在接收到辅助终端发送的反馈信息时确定与辅助终端之间的连接建立完成，向具有基站功能的设备发送连接建立完成的信息，则具有基站功能的设备在接收到被辅助通信的终端发送的连接建立完成的信息时，确定开始进行辅助通信。
根据本发明的第五方面，还提出了一种具有基站功能的设备，包括：上述任一项技术方案中所述的适用于具有基站功能的设备的辅助通信的系统。
根据本发明的第六方面，还提出了一种适用于终端辅助通信的系统，包括：第一接收单元，用于接收具有基站功能的设备发送的辅助任一终端进行通信的通知信息以及辅助通信信息，并用于接收所述任一终端发送的第一响应信息；第一发送单元，用于在根据所述辅助通信信息确定需要辅助所述任一终端进行下行通信时，在第一时频位置发送第一发现信号，以供所述任一终端接收所述第一发现信号并发送所述第一响应信息，并用于在所述第一接收单元接收到所述任一终端发送的所述第一响应信息时，向所述具有基站功能的设备发送与所述任一终端建立完成的确认信息。
在该技术方案中，(辅助终端)通过在接收到具有基站功能的设备发送的辅助通信的通知信息时，在第一时频位置发送发现信号，使得被辅助通信的终端能够检测到该发现信号，进而被辅助通信的终端能够与辅助终端建立连接，以实现辅助通信的目的。
在上述技术方案中，优选地，所述第一接收单元还用于：在根据所述辅助通信信息确定需要辅助所述任一终端进行上行通信时，在第二时频位置上接收所述任一终端发送的第二发现信号；所述第一发送单元还用于，在所述第一接收单元接收到所述第二发现信号时，向所述任一终端发送第二响应信息。
在该技术方案中，当(辅助终端)确定需要辅助其他终端进行上行通信时，由于其他终端会发送发现信号，则可以通过检测其他终端发送的发现信号确定被辅助通信的终端，进而与被辅助通信的终端建立连接实现辅助通信的目的。
在上述技术方案中，优选地，还包括：第二接收单元，用于在需要辅助所述任一终端进行下行通信时，接收所述具有基站功能的设备发送的第一通信数据；第一处理单元，用于对所述第一通信数据进行功率放大处理，或用于对所述第一通信数据进行解调处理，得到第一解调数据，并根据与所述任一终端之间的信道质量对所述第一解调数据进行调制处理；第二发送单元，用于将所述第一处理单元进行功率放大处理后的数据或进行调制处理后的数据发送至所述任一终端；以及
第三接收单元，用于在需要辅助所述任一终端进行上行通信时，接收 所述任一终端发送的第二通信数据；第二处理单元，用于对所述第二通信数据进行功率放大处理，或用于对所述第二通信数据进行解调处理，得到第二解调数据，并根据与所述具有基站功能的设备之间的信道质量对所述第二解调数据进行调制处理；第三发送单元，用于将所述第二处理单元进行功率放大处理后的数据或进行调制处理后的数据发送至所述具有基站功能的设备。
在上述技术方案中，优选地，所述第一接收单元包括：第一选择单元，用于将所述辅助通信信息中通知的所述第一发现信号的时频位置作为所述第一时频位置，和/或将所述辅助通信信息中通知的所述第二发现信号时频位置作为所述第二时频位置；或
第二选择单元，用于在预定的时频资源中选择指定时频位置作为所述第一时频位置和/或所述第二时频位置。
在上述技术方案中，优选地，还包括：第三处理单元，用于在所述第一发送单元发送所述第一发现信号之前，通过所述辅助通信信息中包含的加扰序列对所述第一发现信号进行加扰处理。
在该技术方案中，通过根据辅助通信信息中包含的加扰序列对第一发现信号进行加扰处理，而仅有被辅助通信的终端才知道该加扰序列，进而可以保证仅有被辅助通信的终端才能获取到发现信号，避免第一发现信号被其他终端接收并反馈而造成辅助终端无法准确判定被辅助通信的终端。
根据本发明的第七方面，还提出了另一种适用于终端辅助通信的系统，包括：接收单元，用于接收具有基站功能的设备发送的由指定终端辅助通信的通知信息以及辅助通信信息，并用于接收所述指定终端发送的第三响应信息；发送单元，用于在根据所述辅助通信信息确定由所述指定终端辅助进行上行通信时，在第三时频位置发送第三发现信号，以供所述指定终端接收所述第三发现信号并发送所述第三响应信息，并用于在所述接收单元接收到所述指定终端发送的所述第三响应信息时，向所述具有基站功能的设备发送与所述指定终端建立完成的确认信息。
在该技术方案中，(被辅助通信的终端)通过在接收到具有基站功能的设备发送的辅助通信的通知信息时，在第三时频位置发送发现信号，使 得辅助终端能够检测到该发现信号，进而辅助终端能够与被辅助通信的终端建立连接，以实现辅助通信的目的。
在上述技术方案中，优选地，所述接收单元还用于，在根据所述辅助通信信息确定由所述指定终端辅助进行下行通信时，在第四时频位置上接收所述指定终端发送的第四发现信号；所述发送单元还用于，在所述接收单元接收到所述第四发现信号时，向所述指定终端发送第四响应信息。
在该技术方案中，当(被辅助通信的终端)确定需要被其他终端辅助进行下行通信时，由于辅助终端会发送发现信号，则可以通过检测其他终端发送的发现信号确定辅助终端，进而与辅助终端建立连接实现辅助通信的目的。
根据本发明的第八方面，还提出了一种终端，包括：上述第六方面所述的适用于终端的辅助通信的系统，和/或上述第七方面所述的适用于终端的辅助通信的系统。
通过以上技术方案，能够准确确定需要被辅助通信的终端，避免了盲目辅助而造成通信资源浪费的问题，同时可以在终端与基站之间的信道质量较差时，也能够确保终端与基站之间具有较高的通信质量以及较高的数据传输速率。
附图说明
图1示出了相关技术中的通信场景示意图；
图2示出了根据本发明的实施例的适用于具有基站功能的设备的辅助通信的方法的示意流程图；
图3示出了根据本发明的实施例的适用于具有基站功能的设备辅助通信的系统的示意框图；
图4示出了根据本发明的一个实施例的适用于终端辅助通信的方法的示意流程图；
图5示出了根据本发明的另一个实施例的适用于终端辅助通信的方法的示意流程图；
图6示出了根据本发明的一个实施例的适用于终端辅助通信的系统的 示意框图；
图7示出了根据本发明的另一个实施例的适用于终端辅助通信的系统的示意框图；
图8示出了根据本发明的实施例的通信场景示意图；
图9示出了根据本发明的一个实施例的辅助通信的方法的示意流程图。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
图2示出了根据本发明的实施例的适用于具有基站功能的设备的辅助通信的方法的示意流程图。
如图2所示，根据本发明的实施例的适用于具有基站功能的设备的辅助通信的方法，包括：步骤202，根据与任一终端之间的通信信道的信道质量和所述任一终端的数据传输需求判断是否需要为所述任一终端提供辅助通信；步骤204，在判定需要为所述任一终端提供辅助通信时，选择与所述具有基站功能的设备建立连接的指定终端作为辅助所述任一终端进行通信的辅助终端；步骤206，通过所述辅助终端与所述任一终端进行通信。
在该技术方案中，通过根据与任一终端之间的通信信道的信道质量和该任一终端的数据传输需求判断是否需要为该任一终端提供辅助通信，使得能够准确地确定需要进行辅助通信的终端，避免了仅仅根据与终端之间的通信信道的信道质量确定需要辅助通信的终端而由于该终端没有数据或仅有较少数据需要传输造成盲目辅助、浪费通信资源的问题，同时也避免了仅仅根据终端的数据传输需求确定辅助终端而该终端与具有基站功能的 设备之间的信道质量较高造成盲目辅助、浪费通信资源的问题。
而通过在需要为任一终端提供辅助通信时，选择指定终端作为辅助该任一终端进行通信的辅助终端，使得在上述任一终端与具有基站功能的设备之间的信道质量较差但是有较多数据需要传输时，能够通过与具有基站功能的设备之间的信道质量较好的其他终端进行辅助通信，进而提高了上述任一终端与具有基站功能的设备之间的通信质量，确保上述任一终端具有较高的数据传输速率。
在上述技术方案中，优选地，判断是否需要为所述任一终端提供辅助通信的步骤具体为：在与所述任一终端之间的下行通信信道的信道质量值小于或等于第一预定值，且待传送至所述任一终端的数据量大于或等于第二预定值时，判定需要为所述任一终端提供下行辅助通信；以及在与所述任一终端之间的上行通信信道的信道质量值小于或等于第三预定值，且所述任一终端待发送的数据量大于或等于第四预定值时，判定需要为所述任一终端提供上行辅助通信。
在该技术方案中，当与终端之间的下行通信信道的信道质量小于或等于第一预定值时，说明具有基站功能的设备与终端之间的下行信道质量较差，若具有基站功能的设备待传送至该终端的数据量较大，则可以通过辅助通信的方式提高具有基站功能的设备与该终端之间的数据传输速率；类似地，若具有基站功能的设备与终端之间的上行信道质量较差，且该终端待传送至具有基站功能的设备的数据量较大，则可以通过辅助通信的方式提高具有基站功能的设备与该终端之间的数据传输速率。
在上述技术方案中，优选地，还包括：在与所述任一终端对应的数据缓冲区中确定待传送至所述任一终端的数据量；以及根据所述任一终端发送的媒体访问控制层中的缓冲区状态报告索引项确定所述任一终端待发送的数据量。
其中，具有基站功能的设备确定与终端之间的通信信道质量的方式包括：根据所述任一终端上报的信道质量测量信息确定所述下行通信信道的信道质量值；以及根据所述任一终端发送的上行导频信息确定所述上行通信信道的信道质量值。
为其他终端提供辅助通信的指定终端需要满足以下条件：所述指定终端同意辅助所述任一终端进行通信、所述指定终端与所述具有基站功能的设备之间的信道质量以及所述指定终端与所述任一终端之间的信道质量均大于或等于第五预定值。即该指定终端首先需要同意辅助上述任一终端进行通信，其次该指定终端与具有基站的设备之间的信道质量以及与被提供辅助通信的终端之间的信道质量均较高。
在上述技术方案中，优选地，在通过所述辅助终端与所述任一终端进行通信的步骤之前，还包括：向所述任一终端和所述辅助终端发送辅助通信信息，其中，所述辅助通信信息包括：辅助通信的链路方向、所述任一终端与所述辅助终端通信所使用的频谱信息、所述任一终端或所述辅助终端发送发现信号的时频位置、所述任一终端与所述辅助终端通信所使用的加扰序列信息。
在该技术方案中，通过向辅助终端和被辅助通信的终端发送辅助通信信息，使得二者能够确定辅助通信的链路方向，并在指定的时频位置通过检测发现信号确定对方，以及在具有基站功能的设备指定的频谱资源上进行通信，且能够确定双方对通信信息进行加扰的加扰序列信息。
在上述技术方案中，优选地，在向所述任一终端和所述辅助终端发送辅助通信信息之后，还包括：若确定需要向所述任一终端提供下行辅助通信，则在接收到所述辅助终端发送的与所述任一终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信；若确定需要向所述任一终端提供上行辅助通信，则在接收到所述任一终端发送的与所述辅助终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信。
在该技术方案中，由于在需要向终端提供下行辅助通信时，具有基站功能的设备会通知被辅助通信的终端检测辅助终端发送的发现信号，当被辅助通信的终端检测到辅助终端发送的发现信号时，会向辅助终端发送反馈信息，辅助终端在接收到被辅助通信的终端发送的反馈信息时确定与被辅助通信的终端之间的连接建立完成，向具有基站功能的设备发送连接建立完成的信息，则具有基站功能的设备在接收到辅助终端发送的连接建立完成的信息时，确定开始进行辅助通信；类似地，在需要向终端提供上行 辅助通信时，具有基站功能的设备会通知辅助终端检测被辅助通信的终端发送的发现信号，当辅助终端检测到被辅助通信的终端发送的发现信号时，会向被辅助通信的终端发送反馈信息，被辅助通信的终端在接收到辅助终端发送的反馈信息时确定与辅助终端之间的连接建立完成，向具有基站功能的设备发送连接建立完成的信息，则具有基站功能的设备在接收到被辅助通信的终端发送的连接建立完成的信息时，确定开始进行辅助通信。
图3示出了根据本发明的实施例的适用于具有基站功能的设备辅助通信的系统的示意框图。
如图3所示，根据本发明的实施例的适用于具有基站功能的设备辅助通信的系统300，包括：判断单元302，用于根据与任一终端之间的通信信道的信道质量和所述任一终端的数据传输需求判断是否需要为所述任一终端提供辅助通信；选择单元304，用于在所述判断单元302判定需要为所述任一终端提供辅助通信时，选择与所述具有基站功能的设备建立连接的指定终端作为辅助所述任一终端进行通信的辅助终端；通信单元306，用于通过所述辅助终端与所述任一终端进行通信。
在该技术方案中，通过根据与任一终端之间的通信信道的信道质量和该任一终端的数据传输需求判断是否需要为该任一终端提供辅助通信，使得能够准确地确定需要进行辅助通信的终端，避免了仅仅根据与终端之间的通信信道的信道质量确定需要辅助通信的终端而由于该终端没有数据或仅有较少数据需要传输造成盲目辅助、浪费通信资源的问题，同时也避免了仅仅根据终端的数据传输需求确定辅助终端而该终端与具有基站功能的设备之间的信道质量较高造成盲目辅助、浪费通信资源的问题。
而通过在需要为任一终端提供辅助通信时，选择指定终端作为辅助该任一终端进行通信的辅助终端，使得在上述任一终端与具有基站功能的设备之间的信道质量较差但是有较多数据需要传输时，能够通过与具有基站功能的设备之间的信道质量较好的其他终端进行辅助通信，进而提高了上述任一终端与具有基站功能的设备之间的通信质量，确保上述任一终端具有较高的数据传输速率。
在上述技术方案中，优选地，所述判断单元302具体用于：在与所述任一终端之间的下行通信信道的信道质量值小于或等于第一预定值，且待传送至所述任一终端的数据量大于或等于第二预定值时，判定需要为所述任一终端提供下行辅助通信；以及在与所述任一终端之间的上行通信信道的信道质量值小于或等于第三预定值，且所述任一终端待发送的数据量大于或等于第四预定值时，判定需要为所述任一终端提供上行辅助通信。
在该技术方案中，当与终端之间的下行通信信道的信道质量小于或等于第一预定值时，说明具有基站功能的设备与终端之间的下行信道质量较差，若具有基站功能的设备待传送至该终端的数据量较大，则可以通过辅助通信的方式提高具有基站功能的设备与该终端之间的数据传输速率；类似地，若具有基站功能的设备与终端之间的上行信道质量较差，且该终端待传送至具有基站功能的设备的数据量较大，则可以通过辅助通信的方式提高具有基站功能的设备与该终端之间的数据传输速率。
在上述技术方案中，优选地，所述判断单元302包括：第一确定单元3022，用于在与所述任一终端对应的数据缓冲区中确定待传送至所述任一终端的数据量，并用于根据所述任一终端发送的媒体访问控制层中的缓冲区状态报告索引项确定所述任一终端待发送的数据量。
在上述技术方案中，优选地，所述判断单元302包括：第二确定单元3024，用于根据所述任一终端上报的信道质量测量信息确定所述下行通信信道的信道质量值，并用于根据所述任一终端发送的上行导频信息确定所述上行通信信道的信道质量值。
为其他终端提供辅助通信的指定终端需要满足以下条件：所述指定终端同意辅助所述任一终端进行通信、所述指定终端与所述具有基站功能的设备之间的信道质量以及所述指定终端与所述任一终端之间的信道质量均大于或等于第五预定值。即该指定终端首先需要同意辅助上述任一终端进行通信，其次该指定终端与具有基站的设备之间的信道质量以及与被提供辅助通信的终端之间的信道质量均较高。
在上述技术方案中，优选地，还包括：发送单元308，用于在所述通信单元通过所述辅助终端与所述任一终端进行通信之前，向所述任一终端 和所述辅助终端发送辅助通信信息，其中，所述辅助通信信息包括：辅助通信的链路方向、所述任一终端与所述辅助终端通信所使用的频谱信息、所述任一终端或所述辅助终端发送发现信号的时频位置、所述任一终端与所述辅助终端通信所使用的加扰序列信息。
在该技术方案中，通过向辅助终端和被辅助通信的终端发送辅助通信信息，使得二者能够确定辅助通信的链路方向，并在指定的时频位置通过检测发现信号确定对方，以及在具有基站功能的设备指定的频谱资源上进行通信，且能够确定双方对通信信息进行加扰的加扰序列信息。
在上述技术方案中，优选地，所述通信单元306具体用于：若确定需要向所述任一终端提供下行辅助通信，则在接收到所述辅助终端发送的与所述任一终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信，以及若确定需要向所述任一终端提供上行辅助通信，则在接收到所述任一终端发送的与所述辅助终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信。
在该技术方案中，由于在需要向终端提供下行辅助通信时，具有基站功能的设备会通知被辅助通信的终端检测辅助终端发送的发现信号，当被辅助通信的终端检测到辅助终端发送的发现信号时，会向辅助终端发送反馈信息，辅助终端在接收到被辅助通信的终端发送的反馈信息时确定与被辅助通信的终端之间的连接建立完成，向具有基站功能的设备发送连接建立完成的信息，则具有基站功能的设备在接收到辅助终端发送的连接建立完成的信息时，确定开始进行辅助通信；类似地，在需要向终端提供上行辅助通信时，具有基站功能的设备会通知辅助终端检测被辅助通信的终端发送的发现信号，当辅助终端检测到被辅助通信的终端发送的发现信号时，会向被辅助通信的终端发送反馈信息，被辅助通信的终端在接收到辅助终端发送的反馈信息时确定与辅助终端之间的连接建立完成，向具有基站功能的设备发送连接建立完成的信息，则具有基站功能的设备在接收到被辅助通信的终端发送的连接建立完成的信息时，确定开始进行辅助通信。
本发明还提出了一种具有基站功能的设备(图中未示出)，包括：图 3中所示的适用于具有基站功能的设备的辅助通信的系统300。
图4示出了根据本发明的一个实施例的适用于终端辅助通信的方法的示意流程图。
如图4所示，根据本发明的一个实施例的适用于终端辅助通信的方法，包括：步骤402，接收具有基站功能的设备发送的辅助任一终端进行通信的通知信息以及辅助通信信息；步骤404，在根据所述辅助通信信息确定需要辅助所述任一终端进行下行通信时，在第一时频位置发送第一发现信号，以供所述任一终端接收所述第一发现信号并发送第一响应信息；步骤406，在接收到所述任一终端发送的所述第一响应信息时，向所述具有基站功能的设备发送与所述任一终端建立完成的确认信息。
在该技术方案中，(辅助终端)通过在接收到具有基站功能的设备发送的辅助通信的通知信息时，在第一时频位置发送发现信号，使得被辅助通信的终端能够检测到该发现信号，进而被辅助通信的终端能够与辅助终端建立连接，以实现辅助通信的目的。
在上述技术方案中，优选地，还包括：在根据所述辅助通信信息确定需要辅助所述任一终端进行上行通信时，在第二时频位置上接收所述任一终端发送的第二发现信号，并向所述任一终端发送第二响应信息。
在该技术方案中，当(辅助终端)确定需要辅助其他终端进行上行通信时，由于其他终端会发送发现信号，则可以通过检测其他终端发送的发现信号确定被辅助通信的终端，进而与被辅助通信的终端建立连接实现辅助通信的目的。
在上述技术方案中，优选地，还包括：在需要辅助所述任一终端进行下行通信时，接收所述具有基站功能的设备发送的第一通信数据，对所述第一通信数据进行功率放大处理后发送至所述任一终端，或对所述第一通信数据进行解调处理，得到第一解调数据，并根据与所述任一终端之间的信道质量对所述第一解调数据进行调制后发送至所述任一终端；以及
在需要辅助所述任一终端进行上行通信时，接收所述任一终端发送的第二通信数据，对所述第二通信数据进行功率放大处理后发送至所述具有基站功能的设备，或对所述第二通信数据进行解调处理，得到第二解调数 据，并根据与所述具有基站功能的设备之间的信道质量对所述第二解调数据进行调制后发送至所述具有基站功能的设备。
其中，确定上述第一时频位置和上述第二时频位置的方法包括以下两种方式：
方式一：将所述辅助通信信息中通知的所述第一发现信号的时频位置作为所述第一时频位置，和/或将所述辅助通信信息中通知的所述第二发现信号时频位置作为所述第二时频位置；
方式二：在预定的时频资源中选择指定时频位置作为所述第一时频位置和/或所述第二时频位置。
在上述技术方案中，优选地，在发送所述第一发现信号之前，还包括：通过所述辅助通信信息中包含的加扰序列对所述第一发现信号进行加扰处理。
在该技术方案中，通过根据辅助通信信息中包含的加扰序列对第一发现信号进行加扰处理，而仅有被辅助通信的终端才知道该加扰序列，进而可以保证仅有被辅助通信的终端才能获取到发现信号，避免第一发现信号被其他终端接收并反馈而造成辅助终端无法准确判定被辅助通信的终端。
图5示出了根据本发明的另一个实施例的适用于终端辅助通信的方法的示意流程图。
如图5所示，根据本发明的另一个实施例的适用于终端辅助通信的方法，包括：步骤502，接收具有基站功能的设备发送的由指定终端辅助通信的通知信息以及辅助通信信息；步骤504，在根据所述辅助通信信息确定由所述指定终端辅助进行上行通信时，在第三时频位置发送第三发现信号，以供所述指定终端接收所述第三发现信号并发送第三响应信息；步骤506，在接收到所述指定终端发送的所述第三响应信息时，向所述具有基站功能的设备发送与所述指定终端建立完成的确认信息。
在该技术方案中，(被辅助通信的终端)通过在接收到具有基站功能的设备发送的辅助通信的通知信息时，在第三时频位置发送发现信号，使得辅助终端能够检测到该发现信号，进而辅助终端能够与被辅助通信的终端建立连接，以实现辅助通信的目的。
在上述技术方案中，优选地，还包括：在根据所述辅助通信信息确定由所述指定终端辅助进行下行通信时，在第四时频位置上接收所述指定终端发送的第四发现信号，并向所述指定终端发送第四响应信息。
在该技术方案中，当(被辅助通信的终端)确定需要被其他终端辅助进行下行通信时，由于辅助终端会发送发现信号，则可以通过检测其他终端发送的发现信号确定辅助终端，进而与辅助终端建立连接实现辅助通信的目的。
图6示出了根据本发明的一个实施例的适用于终端辅助通信的系统的示意框图。
如图6所示，根据本发明的一个实施例的适用于终端辅助通信的系统600，包括：第一接收单元602，用于接收具有基站功能的设备发送的辅助任一终端进行通信的通知信息以及辅助通信信息，并用于接收所述任一终端发送的第一响应信息；第一发送单元604，用于在根据所述辅助通信信息确定需要辅助所述任一终端进行下行通信时，在第一时频位置发送第一发现信号，以供所述任一终端接收所述第一发现信号并发送所述第一响应信息，并用于在所述第一接收单元602接收到所述任一终端发送的所述第一响应信息时，向所述具有基站功能的设备发送与所述任一终端建立完成的确认信息。
在该技术方案中，(辅助终端)通过在接收到具有基站功能的设备发送的辅助通信的通知信息时，在第一时频位置发送发现信号，使得被辅助通信的终端能够检测到该发现信号，进而被辅助通信的终端能够与辅助终端建立连接，以实现辅助通信的目的。
在上述技术方案中，优选地，所述第一接收单元602还用于：在根据所述辅助通信信息确定需要辅助所述任一终端进行上行通信时，在第二时频位置上接收所述任一终端发送的第二发现信号；所述第一发送单元604还用于，在所述第一接收单元602接收到所述第二发现信号时，向所述任一终端发送第二响应信息。
在该技术方案中，当(辅助终端)确定需要辅助其他终端进行上行通信时，由于其他终端会发送发现信号，则可以通过检测其他终端发送的发 现信号确定被辅助通信的终端，进而与被辅助通信的终端建立连接实现辅助通信的目的。
在上述技术方案中，优选地，还包括：第二接收单元606，用于在需要辅助所述任一终端进行下行通信时，接收所述具有基站功能的设备发送的第一通信数据；第一处理单元608，用于对所述第一通信数据进行功率放大处理，或用于对所述第一通信数据进行解调处理，得到第一解调数据，并根据与所述任一终端之间的信道质量对所述第一解调数据进行调制处理；第二发送单元610，用于将所述第一处理单元608进行功率放大处理后的数据或进行调制处理后的数据发送至所述任一终端；以及
第三接收单元612，用于在需要辅助所述任一终端进行上行通信时，接收所述任一终端发送的第二通信数据；第二处理单元614，用于对所述第二通信数据进行功率放大处理，或用于对所述第二通信数据进行解调处理，得到第二解调数据，并根据与所述具有基站功能的设备之间的信道质量对所述第二解调数据进行调制处理；第三发送单元616，用于将所述第二处理单元614进行功率放大处理后的数据或进行调制处理后的数据发送至所述具有基站功能的设备。
在上述技术方案中，优选地，所述第一接收单元602包括：第一选择单元6022，用于将所述辅助通信信息中通知的所述第一发现信号的时频位置作为所述第一时频位置，和/或将所述辅助通信信息中通知的所述第二发现信号时频位置作为所述第二时频位置；或
第二选择单元6024，用于在预定的时频资源中选择指定时频位置作为所述第一时频位置和/或所述第二时频位置。
在上述技术方案中，优选地，还包括：第三处理单元616，用于在所述第一发送单元604发送所述第一发现信号之前，通过所述辅助通信信息中包含的加扰序列对所述第一发现信号进行加扰处理。
在该技术方案中，通过根据辅助通信信息中包含的加扰序列对第一发现信号进行加扰处理，而仅有被辅助通信的终端才知道该加扰序列，进而可以保证仅有被辅助通信的终端才能获取到发现信号，避免第一发现信号被其他终端接收并反馈而造成辅助终端无法准确判定被辅助通信的终端。
图7示出了根据本发明的另一个实施例的适用于终端辅助通信的系统的示意框图。
如图7所示，根据本发明的另一个实施例的适用于终端辅助通信的系统700，包括：接收单元702，用于接收具有基站功能的设备发送的由指定终端辅助通信的通知信息以及辅助通信信息，并用于接收所述指定终端发送的第三响应信息；发送单元704，用于在根据所述辅助通信信息确定由所述指定终端辅助进行上行通信时，在第三时频位置发送第三发现信号，以供所述指定终端接收所述第三发现信号并发送所述第三响应信息，并用于在所述接收单元702接收到所述指定终端发送的所述第三响应信息时，向所述具有基站功能的设备发送与所述指定终端建立完成的确认信息。
在该技术方案中，(被辅助通信的终端)通过在接收到具有基站功能的设备发送的辅助通信的通知信息时，在第三时频位置发送发现信号，使得辅助终端能够检测到该发现信号，进而辅助终端能够与被辅助通信的终端建立连接，以实现辅助通信的目的。
在上述技术方案中，优选地，所述接收单元702还用于，在根据所述辅助通信信息确定由所述指定终端辅助进行下行通信时，在第四时频位置上接收所述指定终端发送的第四发现信号；所述发送单元704还用于，在所述接收单元702接收到所述第四发现信号时，向所述指定终端发送第四响应信息。
在该技术方案中，当(被辅助通信的终端)确定需要被其他终端辅助进行下行通信时，由于辅助终端会发送发现信号，则可以通过检测其他终端发送的发现信号确定辅助终端，进而与辅助终端建立连接实现辅助通信的目的。
本发明还提出了一种终端(图中未示出)，包括：如图6中所示的适用于终端的辅助通信的系统600，和/或如图7所示的适用于终端的辅助通信的系统700。
以下结合图8详细说明本发明的技术方案。
为了解决图1所示的场景中存在的问题，即基站102宕机后，UE106 连接到了基站104，此时由于UE106到基站104的距离较远，成为了边缘用户，导致UE106无法获得高速的数据服务。如图8所示，本发明提出了基站802为信道条件较低且有较高数据传输需求的终端806寻找合适的辅助终端804，辅助终端804为终端806转发数据，以维持较高的数据传输速率。
以下详细说明本发明的技术方案：
1、基站判断是否需要为终端提供辅助通信，具体地，基站端判断通信用户(以下简称UE1)在上行/下行是否为低信道质量且高数据传输需求。基站判断用户是否低信道质量的方法可以是：
(1)根据UE1的上报的CQI(Channel Quality Indicator，无线信道质量)，基站端可以判断UE1的下行信道是否信道质量较低；
(2)根据UE1发送的上行导频，基站端可以判断UE1的上行信道是否信道质量较低。
基站端判断通信用户是否有高数据传输需求的方法可以是：
(1)基站端可以直接查看UE1在本站中的数据缓冲区中待传数据量及数据对应的QoS(Quality of Service，服务质量)，来判断UE1在下行方向是否有高数据传输需求；
(2)基站端可以根据UE1发来的MAC(Media Access Control，媒体访问控制)层中的BSR index(buffer state report index，缓冲区状态索引)判断UE1在上行方向时候有高数据传输需求。
2、基站端决定是否为UE1开启终端辅助通信服务。
具体地，若UE1在某个链路方向上处于低信道质量且高数据传输需求状态，则基站可以选择为UE1开启终端辅助通信服务；若UE1并不在任意链路上处于低信道质量且高数据传输需求状态，则基站不为UE1开启终端辅助通信服务。需要注意的是，开通终端辅助通信服务可以只针对某一个链路方向，例如基站只在下行方向为UE1开通终端辅助通信服务，而在上行方向不开启终端通信辅助服务。
3、基站为UE1选择辅助通信终端。
具体地，基站根据UE1的位置信息，为UE1选择合适的辅助通信终 端。所选择的辅助通信终端需要符合以下条件：
(1)辅助通信终端是本基站的服务终端；
(2)辅助通信终端需要同意进行辅助通信服务；
(3)辅助通信终端的位置合适，与UE1和基站之间的信道条件都较好。该条件也可以简化的使用辅助通信终端与UE1之间的距离以及辅助通信终端与基站之间的距离来判断，即当辅助通信终端到两者之间的距离都较近时，可以认为辅助通信终端的位置合适。
4、在下行链路方向进行辅助通信：
(1)基站选定辅助通信终端，向辅助通信终端(以下简称UE2)发出辅助通信信息。该信令包含了辅助通信链路方向信息、UE1与UE2通信所使用频谱指示、UE2发现参考信号时频位置指示、UE1与UE2通信时需要使用的加扰序列指示等信息。
更具体的，UE1与UE2通信所使用的频谱可以是预规划的某些频谱，例如UE1与UE2可以在系统预规划的D2D频谱上进行通信，在此种情况下，基站也可以不通知UE1与UE2通信所使用频谱指示；基站也可以灵活的为本次UE1与UE2的通信分配频谱资源。需要注意的是，UE1与UE2需要能支持在该段频谱上的通信。
更具体的，发现参考信号时频位置指示是UE2所使用的发现信号的时频位置指示，以使UE2在规定的时频资源上发送发现参考信号，当发现信号的时频位置是预先定义的有限集合时，基站端也可以选择不发送此信息，UE2可以在有限集合中选择某个时频位置发送参考信号，通过盲检测来接收对端的发现参考信号。
更具体的，UE1与UE2通信时需要使用的加扰序列是用于UE1和UE2的通信信息加密的加扰序列。此处的加扰序列可以就是UE1或者UE2的C-RNTI(Cell Radio Network Temporary Identifier，小区无线网络临时标识)，也可以是基站从某个约定的加扰序列集合中为UE1和UE2的通信过程分配的加扰序列。
(2)与步骤(1)同时的，基站向UE1发出辅助通信信息，通知UE1进入了被辅助通信状态。该信令包含了辅助通信链路方向信息、UE1 与UE2通信所使用频谱指示、发现参考信号时频位置指示、UE1与UE2通信时需要使用的加扰序列等信息。
更具体的，发现参考信号时频位置指示是UE2所使用的发现信号的时频位置指示，以使UE1在规定的时频资源上接收发送发现参考信号，当发现信号的时频位置是预先定义的有限集合时，基站端也可以选择不发送此信息，UE1可以通过盲检测来接收对端的发现参考信号。
(3)UE2在选定的时频位置上发送发现参考信号。该发现参考信号使用上述指定加扰序列加扰，UE1在指定的时频位置上或者通过盲检测的方式接收并解扰UE2的发现参考信号。
(4)UE1在正确接收到UE2的发现参考信号后，向UE2反馈辅助通信响应信息。该信号包含UE2到UE1的信道质量状况指示。此信道质量可以通过UE2的发现参考信号计算出。
(5)UE2收到UE1反馈的辅助通信响应信息后，认为UE2与UE1之间的连接已建立。UE2向基站发送辅助通信连接建立完成信息，准备接受基站发来的下行数据。
(6)基站将UE1的下行数据(此下行数据包括了用户数据部分和控制信息部分，如DCI等)发送给UE2，UE2可以选择如下方式将UE1的数据转发给UE1：
A、UE2将收到的UE1的数据进行功率放大后发送给UE1；
B、UE2将收到的UE1的数据解调，并根据UE2到UE1的信道质量情况，将此数据再次调制，加上相应的控制信息，将数据发送给UE1。在此种方式下，UE2需要获得UE1的数据解调和再次调制所必要的信息，例如UE1的C-RNTI等。
5、在上行链路方向进行辅助通信：
在上行链路方向进行辅助通信的过程与在下行链路方向进行辅助通信基本相同，只有少量不同，包括：
(1)在上述第4方面的第(1)步骤或第(2)步骤中，基站将UE1的发现参考信号时频位置指示分别通知UE1、UE2。
(2)在上述第4方面的第(3)步骤或第(4)步骤中，UE1发送发 现参考信号，UE2接收检测发现参考信号，并向UE1反馈辅助通信响应信息。该信号包含UE1到UE2的信道质量状况指示。
(3)在上述第4方面的第(5)步骤中，UE1向基站发送辅助通信连接建立完成信息。
需要注意的是：
(1)上述的上/下行链路终端辅助通信过程可以同时或者单独进行。例如UE1的下行通过UE2辅助进行高速数据通信，而上行直接与基站进行通信。
(2)被用作辅助通信的终端需要是受信用户，且同意进行辅助服务。这可能需要用户提前与运营商签约，同意进行该种辅助通信服务，运营商需要在系统中登记可进行该辅助通信服务终端，且可能要对辅助通信用户给予一定奖励补偿。
以上过程可参照图9所示：
如图9所示，根据本发明的一个实施例的辅助通信的方法，包括：
步骤902，基站判断是否为UE1开启终端辅助通信服务，若是，则执行步骤904；否则，结束。
步骤904，基站搜索合适的辅助通信终端。
步骤906，基站向被辅助通信终端UE1和辅助通信终端UE2发送辅助通信信息。
步骤908，终端判断辅助通信链路方向，若是上行辅助通信链路，则执行步骤918；若是下行辅助通信链路，则执行步骤910。
步骤910，在判定是下行辅助通信链路时，UE2向UE1发送发现参考信号。
步骤912，UE1向UE2发送反馈信号。
步骤914，UE2向基站发送连接建立信号。
步骤916，UE2向UE1转发基站发来的下行数据。
步骤918，在判定是上行辅助通信链路时，UE1向UE2发送发现参考信号。
步骤920，UE2向UE1发送反馈信号。
步骤922，UE1向基站发送连接建立信号。
步骤924，UE2向基站转发UE1发来的上行数据。
本发明的上述方案利用空闲UE为低信道质量UE做数据转发服务，有其特定的适用场景和优点，例如不需要专门的relay节点，在处于边缘的UE找不到合适的协作传输节点时也能使用该终端辅助传输方式。
以上结合附图详细说明了本发明的技术方案，本发明提出了一种新的辅助通信的方案，能够准确确定需要被辅助通信的终端，避免了盲目辅助而造成通信资源浪费的问题，同时可以在终端与基站之间的信道质量较差时，也能够确保终端与基站之间具有较高的通信质量以及较高的数据传输速率。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (20)

  1. 一种辅助通信的方法，适用于具有基站功能的设备，其特征在于，包括：
    根据与任一终端之间的通信信道的信道质量和所述任一终端的数据传输需求判断是否需要为所述任一终端提供辅助通信；
    在判定需要为所述任一终端提供辅助通信时，选择与所述具有基站功能的设备建立连接的指定终端作为辅助所述任一终端进行通信的辅助终端；
    通过所述辅助终端与所述任一终端进行通信。
  2. 根据权利要求1所述的辅助通信的方法，其特征在于，判断是否需要为所述任一终端提供辅助通信的步骤具体为：
    在与所述任一终端之间的下行通信信道的信道质量值小于或等于第一预定值，且待传送至所述任一终端的数据量大于或等于第二预定值时，判定需要为所述任一终端提供下行辅助通信；以及
    在与所述任一终端之间的上行通信信道的信道质量值小于或等于第三预定值，且所述任一终端待发送的数据量大于或等于第四预定值时，判定需要为所述任一终端提供上行辅助通信。
  3. 根据权利要求1所述的辅助通信的方法，其特征在于，所述指定终端满足以下条件：
    所述指定终端同意辅助所述任一终端进行通信、所述指定终端与所述具有基站功能的设备之间的信道质量以及所述指定终端与所述任一终端之间的信道质量均大于或等于第五预定值。
  4. 根据权利要求1至3中任一项所述的辅助通信的方法，其特征在于，在通过所述辅助终端与所述任一终端进行通信的步骤之前，还包括：
    向所述任一终端和所述辅助终端发送辅助通信信息，其中，所述辅助通信信息包括：辅助通信的链路方向、所述任一终端与所述辅助终端通信所使用的频谱信息、所述任一终端或所述辅助终端发送发现信号的时频位置、所述任一终端与所述辅助终端通信所使用的加扰序列信息；
    在向所述任一终端和所述辅助终端发送辅助通信信息之后，还包括：
    若确定需要向所述任一终端提供下行辅助通信，则在接收到所述辅助终端发送的与所述任一终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信；
    若确定需要向所述任一终端提供上行辅助通信，则在接收到所述任一终端发送的与所述辅助终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信。
  5. 一种辅助通信的方法，适用于终端，其特征在于，包括：
    接收具有基站功能的设备发送的辅助任一终端进行通信的通知信息以及辅助通信信息；
    在根据所述辅助通信信息确定需要辅助所述任一终端进行下行通信时，在第一时频位置发送第一发现信号，以供所述任一终端接收所述第一发现信号并发送第一响应信息；
    在接收到所述任一终端发送的所述第一响应信息时，向所述具有基站功能的设备发送与所述任一终端建立完成的确认信息。
  6. 根据权利要求5所述的辅助通信的方法，其特征在于，还包括：
    在根据所述辅助通信信息确定需要辅助所述任一终端进行上行通信时，在第二时频位置上接收所述任一终端发送的第二发现信号，并向所述任一终端发送第二响应信息。
  7. 根据权利要求6所述的辅助通信的方法，其特征在于，还包括：
    在需要辅助所述任一终端进行下行通信时，接收所述具有基站功能的设备发送的第一通信数据，对所述第一通信数据进行功率放大处理后发送至所述任一终端，或对所述第一通信数据进行解调处理，得到第一解调数据，并根据与所述任一终端之间的信道质量对所述第一解调数据进行调制后发送至所述任一终端；以及
    在需要辅助所述任一终端进行上行通信时，接收所述任一终端发送的第二通信数据，对所述第二通信数据进行功率放大处理后发送至所述具有基站功能的设备，或对所述第二通信数据进行解调处理，得到第二解调数据，并根据与所述具有基站功能的设备之间的信道质量对所述第二解调数 据进行调制后发送至所述具有基站功能的设备。
  8. 一种辅助通信的方法，适用于终端，其特征在于，包括：
    接收具有基站功能的设备发送的由指定终端辅助通信的通知信息以及辅助通信信息；
    在根据所述辅助通信信息确定由所述指定终端辅助进行上行通信时，在第三时频位置发送第三发现信号，以供所述指定终端接收所述第三发现信号并发送第三响应信息；
    在接收到所述指定终端发送的所述第三响应信息时，向所述具有基站功能的设备发送与所述指定终端建立完成的确认信息。
  9. 根据权利要求8所述的辅助通信的方法，其特征在于，还包括：
    在根据所述辅助通信信息确定由所述指定终端辅助进行下行通信时，在第四时频位置上接收所述指定终端发送的第四发现信号，并向所述指定终端发送第四响应信息。
  10. 一种辅助通信的系统，适用于具有基站功能的设备，其特征在于，包括：
    判断单元，用于根据与任一终端之间的通信信道的信道质量和所述任一终端的数据传输需求判断是否需要为所述任一终端提供辅助通信；
    选择单元，用于在所述判断单元判定需要为所述任一终端提供辅助通信时，选择与所述具有基站功能的设备建立连接的指定终端作为辅助所述任一终端进行通信的辅助终端；
    通信单元，用于通过所述辅助终端与所述任一终端进行通信。
  11. 根据权利要求10所述的辅助通信的系统，其特征在于，所述判断单元具体用于：
    在与所述任一终端之间的下行通信信道的信道质量值小于或等于第一预定值，且待传送至所述任一终端的数据量大于或等于第二预定值时，判定需要为所述任一终端提供下行辅助通信；以及
    在与所述任一终端之间的上行通信信道的信道质量值小于或等于第三预定值，且所述任一终端待发送的数据量大于或等于第四预定值时，判定需要为所述任一终端提供上行辅助通信。
  12. 根据权利要求10所述的辅助通信的系统，其特征在于，所述选择单元选择的所述指定终端满足以下条件：
    所述指定终端同意辅助所述任一终端进行通信、所述指定终端与所述具有基站功能的设备之间的信道质量以及所述指定终端与所述任一终端之间的信道质量均大于或等于第五预定值。
  13. 根据权利要求10至12中任一项所述的辅助通信的系统，其特征在于，还包括：
    发送单元，用于在所述通信单元通过所述辅助终端与所述任一终端进行通信之前，向所述任一终端和所述辅助终端发送辅助通信信息，其中，所述辅助通信信息包括：辅助通信的链路方向、所述任一终端与所述辅助终端通信所使用的频谱信息、所述任一终端或所述辅助终端发送发现信号的时频位置、所述任一终端与所述辅助终端通信所使用的加扰序列信息；
    所述通信单元具体用于：
    若确定需要向所述任一终端提供下行辅助通信，则在接收到所述辅助终端发送的与所述任一终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信，以及
    若确定需要向所述任一终端提供上行辅助通信，则在接收到所述任一终端发送的与所述辅助终端建立完成的确认信息时，通过所述辅助终端与所述任一终端进行通信。
  14. 一种具有基站功能的设备，其特征在于，包括：如权利要求10至13中任一项所述的辅助通信的系统。
  15. 一种辅助通信的系统，适用于终端，其特征在于，包括：
    第一接收单元，用于接收具有基站功能的设备发送的辅助任一终端进行通信的通知信息以及辅助通信信息，并用于接收所述任一终端发送的第一响应信息；
    第一发送单元，用于在根据所述辅助通信信息确定需要辅助所述任一终端进行下行通信时，在第一时频位置发送第一发现信号，以供所述任一终端接收所述第一发现信号并发送所述第一响应信息，并用于在所述第一接收单元接收到所述任一终端发送的所述第一响应信息时，向所述具有基 站功能的设备发送与所述任一终端建立完成的确认信息。
  16. 根据权利要求15所述的辅助通信的系统，其特征在于，
    所述第一接收单元还用于：在根据所述辅助通信信息确定需要辅助所述任一终端进行上行通信时，在第二时频位置上接收所述任一终端发送的第二发现信号；
    所述第一发送单元还用于，在所述第一接收单元接收到所述第二发现信号时，向所述任一终端发送第二响应信息。
  17. 根据权利要求16所述的辅助通信的系统，其特征在于，还包括：
    第二接收单元，用于在需要辅助所述任一终端进行下行通信时，接收所述具有基站功能的设备发送的第一通信数据；第一处理单元，用于对所述第一通信数据进行功率放大处理，或用于对所述第一通信数据进行解调处理，得到第一解调数据，并根据与所述任一终端之间的信道质量对所述第一解调数据进行调制处理；第二发送单元，用于将所述第一处理单元进行功率放大处理后的数据或进行调制处理后的数据发送至所述任一终端；以及
    第三接收单元，用于在需要辅助所述任一终端进行上行通信时，接收所述任一终端发送的第二通信数据；第二处理单元，用于对所述第二通信数据进行功率放大处理，或用于对所述第二通信数据进行解调处理，得到第二解调数据，并根据与所述具有基站功能的设备之间的信道质量对所述第二解调数据进行调制处理；第三发送单元，用于将所述第二处理单元进行功率放大处理后的数据或进行调制处理后的数据发送至所述具有基站功能的设备。
  18. 一种辅助通信的系统，适用于终端，其特征在于，包括：
    接收单元，用于接收具有基站功能的设备发送的由指定终端辅助通信的通知信息以及辅助通信信息，并用于接收所述指定终端发送的第三响应信息；
    发送单元，用于在根据所述辅助通信信息确定由所述指定终端辅助进行上行通信时，在第三时频位置发送第三发现信号，以供所述指定终端接 收所述第三发现信号并发送所述第三响应信息，并用于在所述接收单元接收到所述指定终端发送的所述第三响应信息时，向所述具有基站功能的设备发送与所述指定终端建立完成的确认信息。
  19. 根据权利要求18所述的辅助通信的系统，其特征在于，
    所述接收单元还用于，在根据所述辅助通信信息确定由所述指定终端辅助进行下行通信时，在第四时频位置上接收所述指定终端发送的第四发现信号；
    所述发送单元还用于，在所述接收单元接收到所述第四发现信号时，向所述指定终端发送第四响应信息。
  20. 一种终端，其特征在于，包括：如权利要求15至17中任一项所述的辅助通信的系统，和/或如权利要求18或19所述的辅助通信的系统。
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