WO2017028462A1 - 一种通信的方法、终端及基站 - Google Patents

一种通信的方法、终端及基站 Download PDF

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Publication number
WO2017028462A1
WO2017028462A1 PCT/CN2015/100267 CN2015100267W WO2017028462A1 WO 2017028462 A1 WO2017028462 A1 WO 2017028462A1 CN 2015100267 W CN2015100267 W CN 2015100267W WO 2017028462 A1 WO2017028462 A1 WO 2017028462A1
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WIPO (PCT)
Prior art keywords
terminal
relay
base station
information
system information
Prior art date
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Ceased
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PCT/CN2015/100267
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English (en)
French (fr)
Inventor
雷艺学
吴宽
江明
郑倩
张晨璐
张云飞
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Publication of WO2017028462A1 publication Critical patent/WO2017028462A1/zh
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Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a communication method, a terminal, and a base station.
  • D2D communication is a new technology that allows terminals to communicate directly by multiplexing cell resources under the control of the system. It can increase the spectrum efficiency of the cellular communication system and reduce the terminal. The transmission power solves the problem of lack of spectrum resources of the wireless communication system to a certain extent.
  • the D2D communication technology specifically refers to direct communication between terminals, and does not need to be transmitted or forwarded through a device such as a base station.
  • D2D can be deployed within cellular network coverage and/or outside network coverage.
  • the function of the relay terminal is a new feature introduced in D2D communication. Its deployment is very flexible, and it can expand the network coverage without increasing the existing network equipment. In commercial communication, public safety communication (such as earthquake, war), etc. The field has important applications. Therefore, D2D communication and relay terminals have good application prospects.
  • the terminal under the coverage of the base station is only an ordinary terminal before becoming the relay terminal, it needs to be initialized so that it can perform data forwarding for the base station and the remote terminal to complete the relay.
  • the existing protocol specifications there is no specific scheme for relay initialization of the terminal.
  • the technical problem to be solved by the embodiments of the present invention is to provide a communication method, a terminal, and a base station. To solve the problem of how the terminal is initialized as a relay terminal to complete relay communication.
  • a first aspect of the embodiments of the present invention provides a communication method, including:
  • the terminal acquires a system information block message sent by the base station, where the system information block message is included for selecting Select the parameter information of the relay terminal;
  • the terminal capability information is reported to the base station, so that the base station selects the relay terminal from the respective terminals to perform communication according to the terminal capability information reported by each terminal in the signal coverage range. .
  • the acquiring, by the terminal, the system information block message sent by the base station includes:
  • the terminal determines that it can become a relay terminal according to the power capacity and/or the reference signal received power, transmitting a relay initialization request message for requesting to become the relay terminal to the base station;
  • the acquiring, by the terminal, the system information block message sent by the base station includes:
  • the terminal monitors a system information block message periodically broadcast by the base station.
  • the acquiring, by the terminal, the system information block message sent by the base station includes:
  • the terminal determines that it can become a relay terminal according to the power capacity and/or the reference signal received power, the terminal listens to the system information block message broadcast by the base station.
  • the parameter information for selecting the relay terminal includes a reference signal receiving power threshold value and a threshold value of the number of times the cell changes within a preset time.
  • the parameter information used for selecting the relay terminal further includes at least one of the following information:
  • the power threshold value including a first threshold value corresponding to the executable resource scheduling, and a second threshold value corresponding to the remote terminal that can serve the coverage of the base station signal And corresponding to a third threshold value that can only serve the terminal within the signal coverage of the base station;
  • the terminal capability information includes at least one of the following information:
  • Terminal power information capability information for resource scheduling, reference signal received power information, and maximum number of remote terminals that can be served.
  • the terminal Before the acquiring the system information block message sent by the base station, the terminal further includes:
  • a second aspect of the embodiments of the present invention provides a communication method, including:
  • the base station sends a system information block message to the terminal, where the system information block message includes parameter information for selecting the relay terminal;
  • the base station After the terminal determines that the user meets the condition of being the relay terminal according to the parameter information, the base station receives the terminal capability information reported by the terminal;
  • the base station sends a system information block message to the terminal, including:
  • the terminal After the terminal determines that it can become a relay terminal according to the power capacity and/or the reference signal received power, the terminal receives a relay initialization request message sent by the terminal for requesting to become a relay terminal;
  • a system information block message is returned to the terminal.
  • the base station sends a system information block message to the terminal, including:
  • the base station periodically broadcasts a system information block message.
  • the base station receives the relay initialization request message that exceeds the preset number of times within the preset time period, the period of the broadcast system information block message is extended.
  • the parameter information for selecting the relay terminal includes a reference signal receiving power threshold value and a threshold value of the number of times the cell changes within a preset time.
  • the parameter information used for selecting the relay terminal further includes at least one of the following information:
  • the power threshold value including a first threshold value corresponding to the executable resource scheduling, and a second threshold value corresponding to the remote terminal that can serve the coverage of the base station signal And corresponding to a third threshold value that can only serve the terminal within the signal coverage of the base station;
  • the terminal capability information includes at least one of the following information:
  • Terminal power information capability information for resource scheduling, reference signal received power information, and maximum number of remote terminals that can be served.
  • the method further includes:
  • a terminal including:
  • An acquiring unit configured to acquire a system information block message sent by the base station, where the system information block message includes parameter information for selecting a relay terminal;
  • a determining unit configured to determine, according to the parameter information, whether the terminal satisfies a condition that becomes a relay terminal;
  • a reporting unit configured to report terminal capability information to the base station if the terminal satisfies the condition of being a relay terminal, so that the base station selects from each terminal according to terminal capability information reported by each terminal in the signal coverage range
  • the relay terminal communicates.
  • the obtaining unit is specifically configured to:
  • the terminal can be a relay terminal, sending a relay initialization request message for requesting to become a relay terminal to the base station;
  • the obtaining unit is specifically configured to:
  • the obtaining unit is specifically configured to:
  • the terminal can become a relay terminal, the system information block message broadcast by the base station is monitored.
  • the parameter information for selecting the relay terminal includes a reference signal receiving power threshold value and a threshold value of the number of times the cell changes within a preset time.
  • the parameter information used for selecting the relay terminal further includes at least one of the following information:
  • the power threshold value including a first threshold value corresponding to the executable resource scheduling, and a second threshold value corresponding to the remote terminal that can serve the coverage of the base station signal And corresponding to a third threshold value that can only serve the terminal within the signal coverage of the base station;
  • the terminal capability information includes at least one of the following information:
  • Terminal power information capability information for resource scheduling, reference signal received power information, and maximum number of remote terminals that can be served.
  • a determining unit configured to: before the terminal acquires the system information block message sent by the base station, listen to a relay request of the remote terminal in the coverage of the terminal signal, and record information corresponding to the relay request, where The information corresponding to the request includes the number of remote terminals that initiate the relay request and/or the priority of the relay request;
  • a fourth aspect of the embodiments of the present invention provides a base station, including:
  • a sending unit configured to send a system information block message to the terminal, where the system information block message includes parameter information for selecting a relay terminal;
  • a receiving unit configured to receive terminal capability information reported by the terminal after the terminal determines that the user meets the condition of being the relay terminal according to the parameter information;
  • a selecting unit configured to select a relay terminal from the respective terminals to perform communication according to the terminal capability information reported by each terminal in the coverage of the base station signal.
  • the sending unit is specifically configured to:
  • the terminal After the terminal determines that it can become a relay terminal according to the power capacity and/or the reference signal received power, the terminal receives a relay initialization request message sent by the terminal for requesting to become a relay terminal;
  • a system information block message is returned to the terminal.
  • the sending unit is specifically configured to:
  • Periodically broadcast system information block messages Periodically broadcast system information block messages.
  • the sending unit is further configured to:
  • the parameter information for selecting the relay terminal includes a reference signal receiving power threshold value and a threshold value of the number of times the cell changes within a preset time.
  • the parameter information used for selecting the relay terminal further includes at least one of the following information:
  • the power threshold value including a first threshold value corresponding to the executable resource scheduling, and a second threshold value corresponding to the remote terminal that can serve the coverage of the base station signal And corresponding to a third threshold value that can only serve the terminal within the signal coverage of the base station;
  • the terminal capability information includes at least one of the following information:
  • Terminal power information capability information for resource scheduling, reference signal received power information, and maximum number of remote terminals that can be served.
  • the sending unit is further configured to: before sending the system information block message to the terminal, acquire a priority of the current remote terminal's relay demand and/or the relay request;
  • the terminal may determine whether it satisfies the condition of becoming the relay terminal according to the parameter information, and report the terminal capability information to the time when the terminal information is satisfied.
  • the base station enables the base station to select an optimal terminal as the relay terminal from the terminal reporting the information, thereby completing the process of relay initialization, so that the terminal can perform relay communication as a relay terminal, filling the blank of the existing protocol specification. It is convenient for relay terminals and base stations to provide better relay services for remote terminals.
  • FIG. 1 is a schematic flow chart of a first embodiment of a method for communicating according to the present invention
  • FIG. 2 is a schematic diagram of signaling interaction of a second embodiment of a method for communicating according to the present invention
  • FIG. 3 is a schematic diagram of signaling interaction of a third embodiment of a method for communicating according to the present invention.
  • FIG. 4 is a schematic diagram of signaling interaction of a fourth embodiment of a method for communicating according to the present invention.
  • FIG. 5 is a schematic flowchart diagram of a fifth embodiment of a method for communicating according to the present invention.
  • Figure 6 is a schematic diagram showing the composition of a first embodiment of the terminal of the present invention.
  • Figure 7 is a schematic diagram showing the composition of a second embodiment of the terminal of the present invention.
  • FIG. 8 is a schematic diagram of the composition of a base station according to an embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a first embodiment of a method for communication according to the present invention.
  • the method includes the following steps:
  • the terminal acquires a System Information Block (SIB) message sent by the base station.
  • SIB System Information Block
  • the system information block message includes parameter information for selecting a relay terminal. These parameter information can be used as a criterion for the base station to select a relay terminal.
  • the parameter information used for selecting the relay terminal includes a reference signal receiving power (RSRP) threshold value and a threshold value of the number of times the cell changes within a preset time.
  • RSRP reference signal receiving power
  • RSRP is one of the key parameters of the LTE network that can represent the wireless signal strength and one of the physical layer measurement requirements, and is the average value of the signal power received on all resource particles (RE) carrying the reference signal within a certain symbol.
  • the terminal can be used as a relay terminal only when the RSRP value of the terminal reaches a certain threshold.
  • the number of cell changes in the preset time period can be used to characterize the stability of the terminal. If it changes too much within the preset time, such as 24 hours, if it exceeds the threshold, it will not meet the standard of the relay terminal. Only when the threshold is lower than the set threshold, it is better to be stable.
  • the terminal provides a relay service.
  • the two thresholds may be set by the device manufacturer when the device is shipped from the factory or provide a number of setting options for the user to select, or may be customized by the user, which is not limited in the embodiment of the present invention.
  • the parameter information used for selecting the relay terminal may further include at least one of the following information:
  • the power threshold value including a first threshold value corresponding to the executable resource scheduling, and a second threshold value corresponding to the remote terminal that can serve the coverage of the base station signal And corresponding to a third threshold value that can only serve the terminal within the signal coverage of the base station;
  • a link between D2D terminals is defined as a secondary link, and two resource allocation modes are defined: a scheduling mode and a resource pool optional mode.
  • the resource allocation may be performed in any manner according to the configuration of the base station; when the resource pool self-selection mode is adopted, the resource pool information is controlled by the base station through Radio Resource Control (RRC).
  • RRC Radio Resource Control
  • SIB18 sets and broadcasts the resource pool information of the terminal within the coverage by means of broadcast.
  • the base station can also set a power threshold value for screening, and the power threshold value can also be stepped. For example, it is divided into three power thresholds, which respectively correspond to different levels of capabilities. When the power of the terminal reaches different thresholds, the base station can select the terminal as a suitable relay terminal according to its capability.
  • the base station can also select the terminal by setting a threshold number of remote terminals for the service.
  • the terminal can monitor whether the remote terminal in the coverage of the model exceeds its service capability. If it exceeds, the initialization of the relay terminal may not be performed, or the relay initialization may be performed, but the distance is excluded during the relay service. Remote terminal with far or weak signal.
  • the base station sets the number of services that must be met in the reference information, the terminal must meet the number threshold requirement before it can be selected by the base station as the relay terminal.
  • the above parameter information may be separately defined, or may be defined in any combination, thereby enabling flexible selection and filtering of whether the terminal can become a relay terminal.
  • step S102 The terminal determines, according to the parameter information, whether it satisfies a condition of becoming a relay terminal. If yes, step S103 is performed, otherwise no processing is required.
  • the terminal can perform comparison and matching according to the parameter information. If the terminal can satisfy all the conditions, the relay initialization step can be continued. Otherwise, the terminal does not have the capability of becoming a relay terminal, and no relay initialization is required.
  • the number of terminals in the coverage of the base station signal may be zero or one or more, and the number of terminals having the relay capability may also be zero, one or multiple.
  • the terminal may be notified to the base station that the number of terminals that meet the requirements is greater than two and the number of relay terminals that meet the current relay requirement is less than or equal to the requirements.
  • the base station can select or allocate each terminal according to the terminal capability information reported by each terminal. For example, there are two qualified terminals, but the capability information of the terminal A is superior to the terminal B, and only one terminal A is needed to meet the relay requirement of the remote terminal, and the base station can select the terminal A from the terminal.
  • the base station can select terminal A and terminal B as relay terminals; if terminal a's capability is stronger than terminal B, and terminal A's b capability If it is weaker than the terminal B, it can determine which terminal to select as the relay terminal according to the dependence of the remote terminal's relay requirement on the a capability and the b capability.
  • the terminal capability information includes at least one of the following information:
  • Terminal power information capability information for resource scheduling, reference signal received power information, and maximum number of remote terminals that can be served.
  • the terminal power information serves as the basis of the relay service, and has a very important role. Even if the other capabilities of the terminal are strong, such as high signal quality, the number of remote terminals that can be served is large, but if the power is insufficient to support the relay service, Then you still have to discard when you choose. For the power to meet the demand and the ability to schedule resources, the PSRP is high, and the maximum number of remote terminals that can be served can be preferentially selected as the relay terminal.
  • Obtaining a parameter for selecting a relay terminal by acquiring a system information block message sent by the base station
  • the information can be determined by the terminal according to the parameter information, and the terminal can report the terminal capability information to the base station, so that the base station can select the optimal terminal as the relay terminal from the terminal reporting the information.
  • the process of relay initialization is completed, so that the terminal can perform relay communication as a relay terminal, which fills the gap of the existing protocol specification, and facilitates the relay terminal and the base station to provide better relay service for the remote terminal.
  • the architecture of the entire communication system includes a base station, a terminal 1 and a terminal 2, wherein the terminal 1 is provided with a relay.
  • the terminal of the capability can complete the relay initialization after the process described in this embodiment, and performs functions such as data forwarding by the relay terminal.
  • Terminal 2 is a remote terminal and has a relay requirement.
  • the interaction process of the three includes the following steps:
  • the terminal 1 predetermines whether it can become a relay terminal based on the power capacity and/or the reference signal received power.
  • the terminal 1 can determine the data according to the current data, and can also perform the determination according to the historical data, which is not limited in the embodiment of the present invention.
  • a relay initialization request message for requesting to become a relay terminal is transmitted to the base station.
  • the base station responds to the relay request initialization message and returns a system information block message to the terminal 1.
  • the terminal 1 determines whether it satisfies the condition of becoming a relay terminal based on the parameter information included in the system information block message.
  • the terminal capability information is reported to the base station.
  • the base station selects a relay terminal from the respective terminals to perform communication according to the terminal capability information reported by each terminal in the signal coverage range.
  • the base station feeds back an RRC connection reset message.
  • Terminal 1 becomes a relay terminal.
  • a remote terminal that is informed of its signal coverage can provide relay services.
  • the terminal since the terminal needs to perform two judgments, firstly, the pre-judgment of the relay condition is first performed, and the relay initialization request message is actively reported to the base station to inform the base station of its own relay initialization tendency, so that the relay establishment process is performed.
  • the architecture of the entire communication system includes a base station, a terminal 1 and a terminal 2, wherein the terminal 1 is provided with a relay.
  • the terminal of the capability can complete the relay initialization after the process described in this embodiment, and performs functions such as data forwarding by the relay terminal.
  • Terminal 2 is a remote terminal and has a relay requirement.
  • the interaction process of the three includes the following steps:
  • the terminal 1 listens to the system information block message periodically broadcast by the base station.
  • the base station periodically broadcasts a system information block message.
  • the terminal 1 determines whether it satisfies the condition of becoming a relay terminal based on the parameter information included in the system information block message.
  • the terminal capability information is reported to the base station.
  • the base station selects a relay terminal from the respective terminals to perform communication according to the terminal capability information reported by each terminal in the signal coverage range.
  • the base station feeds back an RRC Connection Reset message.
  • Terminal 1 becomes a relay terminal.
  • a remote terminal that is informed of its signal coverage can provide relay services.
  • the terminal does not need to make two judgments, that is, relative to the second embodiment, the pre-judgment process can be saved, and only the SIB message broadcast by the base station is monitored, and the parameter information carried therein is used to determine whether it conforms to the relay. If the requirements are met, and the terminal capability information of the terminal is fed back to the base station, the process brought by the terminal pre-judging process and the corresponding energy consumption can be reduced.
  • FIG. 4 is a schematic diagram of signaling interaction according to a fourth embodiment of a method for communicating according to the present invention.
  • the architecture of the entire communication system includes a base station, a terminal 1 and a terminal 2, wherein the terminal 1 is a terminal having a relay capability, and after the process described in this embodiment, the relay initialization can be completed. Following the terminal to perform data forwarding and other functions.
  • Terminal 2 is a remote terminal and has a relay requirement.
  • the interaction process of the three includes the following steps:
  • the terminal 1 predetermines whether it can become a relay terminal based on the power capacity and/or the reference signal received power.
  • the terminal 1 determines whether it satisfies the condition of becoming a relay terminal based on the parameter information included in the system information block message.
  • the terminal capability information is reported to the base station.
  • the base station selects a relay terminal from the respective terminals to perform communication according to the terminal capability information reported by each terminal in the signal coverage range.
  • the base station feeds back an RRC connection reset message.
  • Terminal 1 becomes a relay terminal.
  • a remote terminal that is informed of its signal coverage can provide relay services.
  • the terminal that performs the relay condition pre-determination process does not actively send a relay initialization request message to the base station to indicate its relay tendency, but listens to the SIB message broadcast by the base station, and then responds, triggering according to the parameter.
  • the flow of information for the second judgment Compared with the second embodiment, although the speed of the relay establishment process is reduced due to the fact that the terminal does not actively inform the base station of the relaying tendency, the consumption caused by the reported message of the terminal can be reduced, and between the initialization speed of the relay and the consumption of the terminal. A balance has been achieved.
  • the method before the terminal acquires the system information block message sent by the base station, the method further includes:
  • the priority of the request can be understood as the urgency of the relay task. The higher the priority, the more urgent the relay task needs to be processed as soon as possible.
  • the terminal can select whether to perform the “relay condition pre-judgment according to the information and the capability information of the terminal itself.
  • the mechanism for returning the SIB message according to the relay request initialization message may be correspondingly opened, thereby implementing the spirit of the above three relay initialization methods. Live switching.
  • the relay capability terminal can enable the function of the relay pre-judgment according to the number of the relay request that is triggered, and the base station can correspondingly open the management function of the relay initialization request message, and the system is converted into the first method by the fourth embodiment.
  • the mode in the second embodiment for example, the current system performs the mode in the second embodiment, but the relay requirement of the remote terminal is gradually reduced, and the remaining power of the terminal having the relay capability is not sufficient, then the system
  • the terminal having the relay capability can turn off the function of the relay pre-judging according to the number of the initiating relay request that is monitored, and the base station can also correspondingly close the management function of the relay initialization request, and the system is converted into the mode in the second embodiment to The manner in the fourth embodiment performs relay initialization, thereby implementing flexible switching in various modes.
  • FIG. 5 is a schematic flowchart of a fifth embodiment of a method for communication according to the present invention.
  • the method includes the following steps:
  • the base station sends a system information block message to the terminal.
  • the system information block message includes parameter information for selecting a relay terminal.
  • the parameter information used for selecting the relay terminal includes a reference signal receiving power threshold value and a threshold value of the number of times the cell changes within a preset time.
  • the parameter information used for selecting the relay terminal further includes at least one of the following information:
  • the power threshold value including a first threshold value corresponding to the executable resource scheduling, and a second threshold value corresponding to the remote terminal that can serve the coverage of the base station signal And corresponding to a third threshold value that can only serve the terminal within the signal coverage of the base station;
  • the sending, by the base station, the system information block message to the terminal includes:
  • the terminal After the terminal determines that it can become a relay terminal according to the power capacity and/or the reference signal received power, the terminal receives a relay initialization request message sent by the terminal for requesting to become a relay terminal;
  • a system information block message is returned to the terminal.
  • the base station periodically broadcasts a system information block message.
  • the specific interaction process between the base station and the terminal may refer to the second embodiment shown in FIG. 2 to FIG. 4 of the present invention.
  • the embodiment is to the fourth embodiment, and details are not described herein again.
  • the base station receives a relay initialization request message exceeding a preset number of times within a preset time period, the period of the broadcast system information block message is extended. Thereby, excessive terminals are prevented from transmitting the relay initialization request, and the power consumption of the base station and the terminal is reduced.
  • the base station After the terminal determines, according to the parameter information, that the self-satisfaction condition is the relay terminal, the base station receives the terminal capability information reported by the terminal.
  • the terminal capability information includes at least one of the following information:
  • Terminal power information capability information for resource scheduling, reference signal received power information, and maximum number of remote terminals that can be served.
  • the method before the base station sends the system information block message to the terminal, the method further includes:
  • FIG. 6 it is a schematic diagram of a composition of a first embodiment of a terminal according to the present invention.
  • the terminal includes:
  • the acquiring unit 100 is configured to acquire a system information block message sent by the base station, where the system information block message includes parameter information for selecting a relay terminal;
  • the determining unit 200 is configured to determine, according to the parameter information, whether the terminal satisfies a condition that becomes a relay terminal;
  • the reporting unit 300 is configured to: if the terminal meets the condition of being a relay terminal, report the terminal capability information to the base station, so that the base station selects the terminal capability information according to the terminal capability information reported by each terminal in the signal coverage range.
  • the relay terminal communicates.
  • the obtaining unit 100 is specifically configured to:
  • the terminal can be a relay terminal, sending a relay initialization request message for requesting to become a relay terminal to the base station;
  • the obtaining unit 100 is specifically configured to:
  • the obtaining unit 100 is specifically configured to:
  • the terminal can become a relay terminal, the system information block message broadcast by the base station is monitored.
  • the parameter information used for selecting the relay terminal includes a reference signal receiving power threshold value and a threshold value of the number of times the cell changes within a preset time.
  • the parameter information used for selecting the relay terminal further includes at least one of the following information:
  • the power threshold value including a first threshold value corresponding to the executable resource scheduling, and a second threshold value corresponding to the remote terminal that can serve the coverage of the base station signal And corresponding to a third threshold value that can only serve the terminal within the signal coverage of the base station;
  • the terminal capability information includes at least one of the following information:
  • Terminal power information capability information for resource scheduling, reference signal received power information, and maximum number of remote terminals that can be served.
  • FIG. 7 it is a schematic diagram of a composition of a second embodiment of the terminal according to the present invention.
  • the terminal further includes:
  • a determining unit 400 configured to: after the terminal acquires the system information block message sent by the base station, listen to a relay request of the remote terminal in the coverage of the terminal signal, and record information corresponding to the relay request, where The information corresponding to the relay request includes the number of remote terminals that initiate the relay request and/or the priority of the relay request;
  • the above obtaining unit 100, the determining unit 200, the reporting unit 300, and the determining unit 400 may be independent
  • the setting unit 100, the determining unit 200, the reporting unit 300 or the determining unit 400 may be separately set in hardware form independently of the processor of the terminal, and the setting form may be in the form of a microprocessor; It is embedded in the processor of the terminal in hardware, and can also be stored in the memory of the terminal in software, so that the processor of the terminal invokes the above obtaining unit 100, the determining unit 200, the reporting unit 300, and the determining unit. 400 corresponding operation.
  • the obtaining unit 100 and the reporting unit 300 can also be used as an interface circuit of the terminal, and can be integrated with the determining unit 200 or the determining unit 400, or can be independently set.
  • the determining unit 200 may be a processor of the terminal, and the functions of the obtaining unit 100, the reporting unit 300, and the determining unit 400 may be embedded.
  • the processor it can also be set separately from the processor, or can be stored in the memory in the form of software, and the function is called by the processor.
  • the embodiment of the invention does not impose any limitation.
  • the above processor may be a central processing unit (CPU), a microprocessor, a single chip microcomputer, or the like.
  • FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station includes:
  • a sending unit 500 configured to send a system information block message to the terminal, where the system information block message includes parameter information for selecting a relay terminal;
  • the receiving unit 600 is configured to receive the terminal capability information reported by the terminal after the terminal determines that the user meets the condition of being the relay terminal according to the parameter information;
  • the selecting unit 700 is configured to select a relay terminal from the respective terminals to perform communication according to the terminal capability information reported by each terminal in the coverage of the base station signal.
  • the sending unit 500 is specifically configured to:
  • the terminal After the terminal determines that it can become a relay terminal according to the power capacity and/or the reference signal received power, the terminal receives a relay initialization request message sent by the terminal for requesting to become a relay terminal;
  • a system information block message is returned to the terminal.
  • the sending unit 500 is specifically configured to:
  • Periodically broadcast system information block messages Periodically broadcast system information block messages.
  • the sending unit 500 is further configured to:
  • Extending the broadcast if a relay initialization request message exceeding a preset number of times is received within a preset time period The period of the system information block message.
  • the parameter information used for selecting the relay terminal includes a reference signal receiving power threshold value and a threshold value of the number of times the cell changes within a preset time.
  • the parameter information used for selecting the relay terminal further includes at least one of the following information:
  • the power threshold value including a first threshold value corresponding to the executable resource scheduling, and a second threshold value corresponding to the remote terminal that can serve the coverage of the base station signal And corresponding to a third threshold value that can only serve the terminal within the signal coverage of the base station;
  • the terminal capability information includes at least one of the following information:
  • Terminal power information capability information for resource scheduling, reference signal received power information, and maximum number of remote terminals that can be served.
  • the sending unit 500 is further configured to: before sending the system information block message to the terminal, acquire a priority of the current remote terminal's relay demand and/or the relay request;
  • the foregoing sending unit 500, the receiving unit 600, and the selecting unit 700 may exist independently or may be integrated.
  • the sending unit 500, the receiving unit 600, or the selecting unit 700 may be separately set in hardware form independently of the processor of the base station, and the setting form may be It is in the form of a microprocessor; it can also be embedded in the processor of the base station in hardware form, and can also be stored in the memory of the base station in software, so that the processor of the base station calls the above sending unit 500 to receive The operations of unit 600 and selection unit 700.
  • the sending unit 500 and the receiving unit 600 can also be used as interface circuits of the base station, and can be integrated with the selecting unit 700 or independently.
  • the selecting unit 700 may be a processor of the base station, and the functions of the sending unit 500 and the receiving unit 600 may be embedded in the processor. It can also be set independently of the processor, or it can be stored in the memory in the form of software, and its function can be called by the processor.
  • the embodiment of the invention does not impose any limitation.
  • the above processor can It is a central processing unit (CPU), a microprocessor, a single chip microcomputer, and the like.
  • the present invention has the following advantages:
  • the terminal may determine whether it satisfies the condition of becoming the relay terminal according to the parameter information, and report the terminal capability information to the time when the terminal information is satisfied.
  • the base station enables the base station to select an optimal terminal as the relay terminal from the terminal reporting the information, thereby completing the process of relay initialization, so that the terminal can perform relay communication as a relay terminal, filling the blank of the existing protocol specification. It is convenient for relay terminals and base stations to provide better relay services for remote terminals.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例公开了一种通信的方法，包括：终端获取基站发送的系统信息块消息，所述系统信息块消息中包含用于选择中继终端的参数信息；所述终端根据所述参数信息判断自身是否满足成为中继终端的条件；若所述终端满足成为中继终端的条件，则上报终端能力信息至所述基站以便所述基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。本发明实施例还公开了一种终端及基站。采用本发明，可将终端初始化为中继终端并完成中继通信。

Description

一种通信的方法、终端及基站
本申请要求于2015年08月14日提交中国专利局，申请号为201510502564.X、发明名称为“一种通信的方法、终端及基站”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种通信的方法、终端及基站。
背景技术
设备与设备(Device-to-Device，简称D2D)通信是一种在系统的控制下，允许终端之间通过复用小区资源直接进行通信的新型技术，它能够增加蜂窝通信系统频谱效率，降低终端发射功率，在一定程度上解决无线通信系统频谱资源匮乏的问题。D2D通信技术具体是指终端之间可以进行直接通信，而不需要经过基站等设备的传输或转发。D2D可部署在蜂窝网络覆盖范围内和/或网络覆盖范围外。中继终端的功能是在D2D通信中引入的新特性，其部署非常灵活，能够在不增加现有网络设备的情况下扩大网络覆盖范围，在商用通信、公共安全通信(如地震、战争)等领域有着重要应用。因此D2D通信及中继终端具有良好的应用前景。
由于基站覆盖范围下的终端在成为中继终端之前只是普通的终端，因此需要对其进行初始化，以便其为基站和远程终端进行数据转发，完成中继的作用。但是在现有的协议规范中，并没有对终端进行中继初始化的具体方案。
发明内容
本发明实施例所要解决的技术问题在于，提供一种通信的方法、终端及基站。以解决终端如何初始化为中继终端以完成中继通信的问题。
为了解决上述技术问题，本发明实施例第一方面提供了一种通信的方法，包括：
终端获取基站发送的系统信息块消息，所述系统信息块消息中包含用于选 择中继终端的参数信息；
所述终端根据所述参数信息判断自身是否满足成为中继终端的条件；
若所述终端满足成为中继终端的条件，则上报终端能力信息至所述基站以便所述基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
其中，所述终端获取基站发送的系统信息块消息，包括：
所述终端根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端；
若所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端，则发送用于请求成为中继终端的中继初始化请求消息至所述基站；
接收所述基站返回的系统信息块消息。
其中，所述终端获取基站发送的系统信息块消息，包括：
所述终端监听所述基站周期性广播的系统信息块消息。
其中，所述终端获取基站发送的系统信息块消息，包括：
所述终端根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端；
若所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端，则监听所述基站广播的系统信息块消息。
其中，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
其中，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
服务的远程终端的数量门限值。
其中，所述终端能力信息包括以下信息的至少一种：
终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
其中，在所述终端获取基站发送的系统信息块消息之前，还包括：
监听所述终端信号覆盖范围内的远程终端的中继请求，记录所述中继请求对应的信息，其中，所述中继请求对应的信息包括发起中继请求的远程终端数量和/或中继请求的优先级；
根据所述中继请求对应的信息和/或所述终端能力信息确定是否执行根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端的步骤。
本发明实施例第二方面提供了一种通信的方法，包括：
基站发送系统信息块消息至终端，所述系统信息块消息中包含用于选择中继终端的参数信息；
在所述终端根据所述参数信息判断自身满足成为中继终端的条件之后，所述基站接收所述终端上报的终端能力信息；
根据所述基站信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
其中，所述基站发送系统信息块消息至终端，包括：
在所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端之后，接收所述终端发送的用于请求成为中继终端的中继初始化请求消息；
返回系统信息块消息至所述终端。
其中，所述基站发送系统信息块消息至终端，包括：
所述基站周期性广播系统信息块消息。
其中，若所述基站在预设时段内接收到超过预设次数的中继初始化请求消息，则延长广播系统信息块消息的周期。
其中，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
其中，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
服务的远程终端的数量门限值。
其中，所述终端能力信息包括以下信息的至少一种：
终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
其中，在基站发送系统信息块消息至终端之前，还包括：
获取当前远程终端的中继需求量和/或中继请求的优先级；
根据当前远程终端的中继需求量和/或中继请求的优先级选择周期性广播系统信息块消息或者仅在接收到中继初始化请求消息时为发送中继初始化请求消息的终端返回系统信息块消息。
相应地，本发明实施例第三方面提供了一种终端，包括：
获取单元，用于获取基站发送的系统信息块消息，所述系统信息块消息中包含用于选择中继终端的参数信息；
判断单元，用于根据所述参数信息判断所述终端是否满足成为中继终端的条件；
上报单元，用于若所述终端满足成为中继终端的条件，则上报终端能力信息至所述基站以便所述基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
其中，所述获取单元具体用于：
根据功率容量和/或参考信号接收功率预先判断所述终端能否成为中继终端；
若所述终端能成为中继终端，则发送用于请求成为中继终端的中继初始化请求消息至所述基站；
接收所述基站返回的系统信息块消息。
其中，所述获取单元具体用于：
监听所述基站周期性广播的系统信息块消息。
其中，所述获取单元具体用于：
根据功率容量和/或参考信号接收功率预先判断所述终端能否成为中继终端；
若所述终端能成为中继终端，则监听所述基站广播的系统信息块消息。
其中，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
其中，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
服务的远程终端的数量门限值。
其中，所述终端能力信息包括以下信息的至少一种：
终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
其中，还包括：
确定单元，用于在所述终端获取基站发送的系统信息块消息之前，监听所述终端信号覆盖范围内的远程终端的中继请求，记录所述中继请求对应的信息，其中，所述中继请求对应的信息包括发起中继请求的远程终端数量和/或中继请求的优先级；
根据所述中继请求对应的信息和/或所述终端能力信息确定是否执行根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端的步骤。
本发明实施例第四方面提供了一种基站，包括：
发送单元，用于发送系统信息块消息至终端，所述系统信息块消息中包含用于选择中继终端的参数信息；
接收单元，用于在所述终端根据所述参数信息判断自身满足成为中继终端的条件之后，接收所述终端上报的终端能力信息；
选择单元，用于根据所述基站信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
其中，所述发送单元具体用于：
在所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端之后，接收所述终端发送的用于请求成为中继终端的中继初始化请求消息；
返回系统信息块消息至所述终端。
其中，所述发送单元具体用于：
周期性广播系统信息块消息。
其中，所述发送单元还用于：
若在预设时段内接收到超过预设次数的中继初始化请求消息，则延长广播系统信息块消息的周期。
其中，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
其中，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
服务的远程终端的数量门限值。
其中，所述终端能力信息包括以下信息的至少一种：
终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
其中，所述发送单元还用于：在发送系统信息块消息至终端之前，获取当前远程终端的中继需求量和/或中继请求的优先级；
根据当前远程终端的中继需求量和/或中继请求的优先级选择周期性广播系统信息块消息或者仅在接收到中继初始化请求消息时为发送中继初始化请求消息的终端返回系统信息块消息。
实施本发明实施例，具有如下有益效果：
通过获取基站发送的系统信息块消息，从而得知用于选择中继终端的参数信息，终端可根据这些参数信息确定自身是否满足成为中继终端的条件，且在满足的时候上报终端能力信息给基站，使得基站可以从上报信息的终端上选择最优的终端作为中继终端，从而完成了中继初始化的过程，使得终端可以作为中继终端进行中继通信，填补了现有协议规范的空白，利于中继终端和基站为远程终端提供更佳的中继服务。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述 中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明通信的方法的第一实施例的流程示意图；
图2是本发明通信的方法的第二实施例的信令交互示意图；
图3是本发明通信的方法的第三实施例的信令交互示意图；
图4是本发明通信的方法的第四实施例的信令交互示意图；
图5是本发明通信的方法的第五实施例的流程示意图；
图6是本发明终端的第一实施例的组成示意图；
图7是本发明终端的第二实施例的组成示意图；
图8是本发明实施例基站的组成示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参照图1，为本发明通信的方法的第一实施例的流程示意图，在本实施例中，所述方法包括以下步骤：
S101，终端获取基站发送的系统信息块(System Information Block，简称SIB)消息。
其中，所述系统信息块消息中包含用于选择中继终端的参数信息。这些参数信息可以作为基站选择中继终端的标准。
可选地，所述用于选择中继终端的参数信息，包括参考信号接收功率(Reference Signal Receiving Power，简称RSRP)门限值以及在预设时间内小区变化的次数门限值。
其中，RSRP是LTE网络中可以代表无线信号强度的关键参数以及物理层测量需求之一，是在某个符号内承载参考信号的所有资源粒子(RE)上接收到的信号功率的平均值。只有终端的RSRP数值达到一定的门限值时，终端才可能作为中继终端使用；而预设时间内小区变化的次数则可以表征终端的稳定性， 若其在预设时间如24小时内变化的次数过多，超过门限值时，则不符合中继终端的标准，只有低于设定的次数门限值时才能更佳的稳定的为远程终端提供中继服务。
需要说明的是，此处的两个门限值可以由设备生产厂商在设备出厂时设置或者提供若干设置选项供用户选择，也可以由用户自定义，本发明实施例不作任何限定。
可选地，除了上述两个参数信息之外，所述用于选择中继终端的参数信息，还可以包括以下信息中的至少一种：
用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
服务的远程终端的数量门限值。
在3GPP技术中，将D2D终端之间的链路定义为副链路，并且定义了两种资源分配方式：调度模式和资源池自选模式。当终端处于基站网络覆盖范围内时，可以根据基站的配置采用任一种方式进行资源分配；当采用资源池自选模式时，资源池信息由基站通过无线资源控制(Radio Resource Control，简称RRC)(SIB18)设置,并通过广播的方式告知覆盖范围内的终端该资源池信息。而对于可作为中继终端的终端来说，基站在选择中继终端时，还可以设定功率门限值来进行筛选，且功率门限值还可以进行阶梯型的区分。例如，划分为三个功率门限值，分别对应不同级别的能力，当终端的功率达到不同的门限值时，基站便可以根据其能力选择终端作为合适的中继终端。
而且，基站还可以通过设定服务的远程终端的数量门限值来对终端进行选择。其中，终端可以监听其型号覆盖范围内的远程终端是否超过其服务能力，若超过，则可以不进行中继终端的初始化，或者也可以进行中继初始化但在中继服务时排除掉部分距离较远或信号较弱的远程终端。而当基站在参考信息中设定必须满足的服务数量要求时，则终端必须达到数量门限值要求，才可能被基站选择作为中继终端。
需要说明的是，以上的参数信息可以单独限定，也可以进行任意组合的限定，从而实现对终端是否能成为中继终端进行灵活的选择和过滤。
S102，所述终端根据所述参数信息判断自身是否满足成为中继终端的条件。若满足，则执行步骤S103，否则无需进行任何处理。
具体地，当终端从SIB消息中获取到用于选择中继终端的参数信息之后，便可以根据这些参数信息来进行对照和匹配。若终端能满足所有的条件，便可以继续执行中继初始化的步骤，否则，则说明终端不具备成为中继终端的能力，无需再进行中继初始化。
S103，上报终端能力信息至所述基站以便所述基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
可选地，位于基站信号覆盖范围内的终端可以是0个，也可以是一个或多个，其中，具备中继能力的终端数量也可能是0个、1个或多个。当终端通过参数信息的判断符合中继终端的要求之后，便可以将该结果告知基站，当符合要求的终端数量大于两个且应对当前中继需求的中继终端数量少于或等于符合要求的终端数量时，基站便可以根据各个终端上报的终端能力信息对各个终端进行选择或者分配。例如，符合条件的终端有两个，但终端A的各项能力信息均优于终端B，且此时只需要一个终端A便可以满足远程终端的中继需求，则基站可以从其中选择终端A作为中继终端；若需要两个终端才能满足远程终端的中继需求，则基站可以选择终端A和终端B作为中继终端；若终端A的a能力强于终端B，而终端A的b能力弱于终端B，则可以根据远程终端的中继需求对a能力及b能力的依赖程度来确定选择哪个终端作为中继终端。
可选地，所述终端能力信息包括以下信息的至少一种：
终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
其中，终端电量信息作为中继服务的基础，具有非常重要的作用，即便终端的其他能力再强，如信号质量高，可服务的远程终端数量大，但是若其电量不足以支撑中继服务，则在选择时仍需抛弃。对于电量满足需求，且具备资源调度的能力，PSRP高，可服务的远程终端的最大数量大的终端，可以优先选择作为中继终端。
通过获取基站发送的系统信息块消息，从而得知用于选择中继终端的参数 信息，终端可根据这些参数信息确定自身是否满足成为中继终端的条件，且在满足的时候上报终端能力信息给基站，使得基站可以从上报信息的终端上选择最优的终端作为中继终端，从而完成了中继初始化的过程，使得终端可以作为中继终端进行中继通信，填补了现有协议规范的空白，利于中继终端和基站为远程终端提供更佳的中继服务。
请参照图2，为本发明通信的方法的第二实施例的信令交互示意图，在本实施例中，整个通信系统的架构包括基站，终端1和终端2，其中，终端1为具备中继能力的终端，在经过本实施例所述的流程后可完成中继初始化，作为中继终端进行数据转发等功能。终端2为远程终端，具备中继需求。具体地，三者的交互流程包括以下步骤：
1.终端1根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端。
此处终端1可以根据当前检测到的一些数据进行判断，也可以根据历史数据进行判断，本发明实施例不作任何限定。
2.若预先判断能成为中继终端，则发送用于请求成为中继终端的中继初始化请求消息至基站。
3.基站响应中继请求初始化消息，返回系统信息块消息给终端1。
4.终端1根据系统信息块消息包含的参数信息判断自身是否满足成为中继终端的条件。
5.若终端1满足成为中继终端的条件，则上报终端能力信息至基站。
6.基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
7.若终端1可成为中继终端，基站反馈RRC连接重置消息。
8.终端1成为中继终端。
9.广播中继通知消息。告知其信号覆盖范围内的远程终端可提供中继服务。
在本发明实施例中，由于终端需要进行两次判断，首先先进行中继条件的预判断，并主动向基站上报中继初始化请求消息，告知基站自己的中继初始化倾向，使得中继建立过程最为主动，这样远程终端即终端2的中继请求能够得到较快的响应；且基站不需主动广播包含作为选择标准的参数信息的SIB消息， 因此可大量节省信令消耗；此外，基站还可以较为方便地了解到其信号覆盖范围内有多少具备中继能力的终端，方便管理中继服务过程，可以初步筛选出较合适的终端充当中继终端，也便于后续远程终端进行中继选择。
请参照图3，为本发明通信的方法的第三实施例的信令交互示意图；在本实施例中，整个通信系统的架构包括基站，终端1和终端2，其中，终端1为具备中继能力的终端，在经过本实施例所述的流程后可完成中继初始化，作为中继终端进行数据转发等功能。终端2为远程终端，具备中继需求。具体地，三者的交互流程包括以下步骤：
1.终端1监听基站周期性广播的系统信息块消息。
2.基站周期性广播系统信息块消息。
3.终端1根据系统信息块消息包含的参数信息判断自身是否满足成为中继终端的条件。
4.若终端1满足成为中继终端的条件，则上报终端能力信息至基站。
5.基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
6.若终端1可成为中继终端，则基站反馈RRC连接重置消息。
7.终端1成为中继终端。
8.广播中继通知消息。告知其信号覆盖范围内的远程终端可提供中继服务。
在实施例中，终端无需进行两次判断即相对于第二实施例而言，可节省预判断的过程，只需监听基站广播的SIB消息，并根据其中携带的参数信息判断自身是否符合中继要求，若符合，并反馈自身的终端能力信息给基站，从而可以降低终端进行中继预判断过程带来的流程以及相应的能耗。
请参照图4，为本发明通信的方法的第四实施例的信令交互示意图。在本实施例中，整个通信系统的架构包括基站，终端1和终端2，其中，终端1为具备中继能力的终端，在经过本实施例所述的流程后可完成中继初始化，作为中继终端进行数据转发等功能。终端2为远程终端，具备中继需求。具体地，三者的交互流程包括以下步骤：
1.终端1根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端。
2.若预先判断能成为中继终端，则监听基站广播的系统信息块消息。
3.基站周期性广播的系统信息块消息。
4.终端1根据系统信息块消息包含的参数信息判断自身是否满足成为中继终端的条件。
5.若终端1满足成为中继终端的条件，则上报终端能力信息至基站。
6.基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
7.若终端1可成为中继终端，基站反馈RRC连接重置消息。
8.终端1成为中继终端。
9.广播中继通知消息。告知其信号覆盖范围内的远程终端可提供中继服务。
在本实施例中，执行了中继条件预判断流程的终端不主动向基站发送中继初始化请求消息以表明其中继倾向，而是监听到基站广播的SIB消息后，再进行响应，触发根据参数信息进行第二次判断的流程。相比于第二实施例，虽然由于终端没有主动告知基站中继倾向导致中继建立过程速度降低，但却也因此可以减少终端上报消息带来的消耗，在中继初始化速度与终端消耗之间取得了平衡。
通过以上第二至第四实施例的描述，对本发明中继初始化的三种方式进行说明，此外，可选地，在所述终端获取基站发送的系统信息块消息之前，还包括：
监听所述终端信号覆盖范围内的远程终端的中继请求，记录所述中继请求对应的信息，其中，所述中继请求对应的信息包括发起中继请求的远程终端数量和/或中继请求的优先级；此处的中继请求的优先级可理解为中继任务的紧急程度，优先级越高，中继任务越紧急，需要尽快处理。
根据所述中继请求对应的信息和/或所述终端能力信息确定是否执行根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端的步骤。
因此，终端通过监听所述终端信号覆盖范围内的远程终端的中继请求，记录所述中继请求对应的信息，便可以根据这些信息以及终端自身的能力信息选择是否进行“中继条件预判断”，再结合基站侧也可以对应开启是否根据中继请求初始化消息返回SIB消息的机制，从而实现上述三种中继初始化方式的灵 活切换。例如，若当前系统执行的是第四实施例中的中继初始化方式，但系统中远程终端的数量突然增多，中继需求增大，这就要求对中继请求的反应迅速，因此此时有中继能力的终端可以根据监听到发起的中继请求的数量开启中继预判断的功能，而基站则可以对应开启中继初始化请求消息的管理功能，系统由第四实施例的方式转换为第二实施例中的方式；又例如，当前系统执行的是第二实施例中的方式，但远程终端的中继需求在逐渐减少，同时有中继能力的终端剩余电量也并不充足，则此时有中继能力的终端可以根据监听到的发起中继请求的数量关闭中继预判断的功能，基站也可以对应关闭中继初始化请求的管理功能，系统由第二实施例中的方式转换为第四实施例中的方式进行中继初始化，从而实现各种方式的灵活切换。
请参照图5，为本发明通信的方法的第五实施例的流程示意图；在本实施例中，所述方法包括以下步骤：
S501，基站发送系统信息块消息至终端。
其中，所述系统信息块消息中包含用于选择中继终端的参数信息。
可选地，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
可选地，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
服务的远程终端的数量门限值。
可选地，所述基站发送系统信息块消息至终端，包括：
在所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端之后，接收所述终端发送的用于请求成为中继终端的中继初始化请求消息；
返回系统信息块消息至所述终端。
或者包括：所述基站周期性广播系统信息块消息。
其中，基站与终端的具体交互过程可参照本发明图2至图4所示的第二实 施例至第四实施例，此处不再赘述。
若所述基站在预设时段内接收到超过预设次数的中继初始化请求消息，则延长广播系统信息块消息的周期。从而避免过多的终端发送中继初始化请求，减少基站和终端能耗。
S502，在所述终端根据所述参数信息判断自身满足成为中继终端的条件之后，所述基站接收所述终端上报的终端能力信息。
S503，根据所述基站信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
可选地，所述终端能力信息包括以下信息的至少一种：
终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
可选地，在基站发送系统信息块消息至终端之前，还包括：
获取当前远程终端的中继需求量和/或中继请求的优先级；
根据当前远程终端的中继需求量和/或中继请求的优先级选择周期性广播系统信息块消息或者仅在接收到中继初始化请求消息时为发送中继初始化请求消息的终端返回系统信息块消息。从而实现中继初始化管理功能的开启和关闭。
请参照图6，为本发明终端的第一实施例的组成示意图；在本实施例中，所述终端包括：
获取单元100，用于获取基站发送的系统信息块消息，所述系统信息块消息中包含用于选择中继终端的参数信息；
判断单元200，用于根据所述参数信息判断所述终端是否满足成为中继终端的条件；
上报单元300，用于若所述终端满足成为中继终端的条件，则上报终端能力信息至所述基站以便所述基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
可选地，所述获取单元100具体用于：
根据功率容量和/或参考信号接收功率预先判断所述终端能否成为中继终端；
若所述终端能成为中继终端，则发送用于请求成为中继终端的中继初始化请求消息至所述基站；
接收所述基站返回的系统信息块消息。
可选地，所述获取单元100具体用于：
监听所述基站周期性广播的系统信息块消息。
可选地，所述获取单元100具体用于：
根据功率容量和/或参考信号接收功率预先判断所述终端能否成为中继终端；
若所述终端能成为中继终端，则监听所述基站广播的系统信息块消息。
可选地，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
可选地，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
服务的远程终端的数量门限值。
可选地，所述终端能力信息包括以下信息的至少一种：
终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
请参照图7，为本发明终端的第二实施例的组成示意图；在本实施例中，所述终端与图6所示终端相比，还包括：
确定单元400，用于在所述终端获取基站发送的系统信息块消息之前，监听所述终端信号覆盖范围内的远程终端的中继请求，记录所述中继请求对应的信息，其中，所述中继请求对应的信息包括发起中继请求的远程终端数量和/或中继请求的优先级；
根据所述中继请求对应的信息和/或所述终端能力信息确定是否执行根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端的步骤。
以上获取单元100、判断单元200、上报单元300和确定单元400可以独 立存在，也可以集成设置，获取单元100、判断单元200、上报单元300或确定单元400可以以硬件的形式独立于终端的处理器单独设置，且设置形式可以是微处理器的形式；也可以以硬件形式内嵌于该终端的处理器中，还可以以软件形式存储于该终端的存储器中，以便于该终端的处理器调用执行以上获取单元100、判断单元200、上报单元300和确定单元400对应的操作。
当然，获取单元100和上报单元300也可以作为该终端的接口电路，可以与判断单元200或确定单元400集成，也可以独立设置。
例如，在本发明终端的第二实施例(图7所示的实施例)中，判断单元200可以为该终端的处理器，而获取单元100、上报单元300和确定单元400的功能可以内嵌于该处理器中，也可以独立于处理器单独设置，也可以以软件的形式存储于存储器中，由处理器调用实现其功能。本发明实施例不做任何限制。以上处理器可以为中央处理单元(CPU)、微处理器、单片机等。
请参照图8，为本发明实施例基站的组成示意图，在本实施例中，所述基站包括：
发送单元500，用于发送系统信息块消息至终端，所述系统信息块消息中包含用于选择中继终端的参数信息；
接收单元600，用于在所述终端根据所述参数信息判断自身满足成为中继终端的条件之后，接收所述终端上报的终端能力信息；
选择单元700，用于根据所述基站信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
可选地，所述发送单元500具体用于：
在所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端之后，接收所述终端发送的用于请求成为中继终端的中继初始化请求消息；
返回系统信息块消息至所述终端。
可选地，所述发送单元500具体用于：
周期性广播系统信息块消息。
可选地，所述发送单元500还用于：
若在预设时段内接收到超过预设次数的中继初始化请求消息，则延长广播 系统信息块消息的周期。
可选地，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
可选地，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
服务的远程终端的数量门限值。
可选地，所述终端能力信息包括以下信息的至少一种：
终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
可选地，所述发送单元500还用于：在发送系统信息块消息至终端之前，获取当前远程终端的中继需求量和/或中继请求的优先级；
根据当前远程终端的中继需求量和/或中继请求的优先级选择周期性广播系统信息块消息或者仅在接收到中继初始化请求消息时为发送中继初始化请求消息的终端返回系统信息块消息。
以上发送单元500、接收单元600和选择单元700可以独立存在，也可以集成设置，发送单元500、接收单元600或选择单元700可以以硬件的形式独立于基站的处理器单独设置，且设置形式可以是微处理器的形式；也可以以硬件形式内嵌于该基站的处理器中，还可以以软件形式存储于该基站的存储器中，以便于该基站的处理器调用执行以上发送单元500、接收单元600和选择单元700对应的操作。
当然，发送单元500和接收单元600也可以作为该基站的接口电路，可以与选择单元700集成，也可以独立设置。
例如，在本发明基站的实施例(图8所示的实施例)中，选择单元700可以为该基站的处理器，而发送单元500和接收单元600的功能可以内嵌于该处理器中，也可以独立于处理器单独设置，也可以以软件的形式存储于存储器中，由处理器调用实现其功能。本发明实施例不做任何限制。以上处理器可以 为中央处理单元(CPU)、微处理器、单片机等。
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其它实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。对于装置实施例而言，由于其与方法实施例基本相似，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
通过上述实施例的描述，本发明具有以下优点：
通过获取基站发送的系统信息块消息，从而得知用于选择中继终端的参数信息，终端可根据这些参数信息确定自身是否满足成为中继终端的条件，且在满足的时候上报终端能力信息给基站，使得基站可以从上报信息的终端上选择最优的终端作为中继终端，从而完成了中继初始化的过程，使得终端可以作为中继终端进行中继通信，填补了现有协议规范的空白，利于中继终端和基站为远程终端提供更佳的中继服务。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，简称ROM)或随机存储记忆体(Random Access Memory，简称RAM)等。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (32)

  1. 一种通信的方法，其特征在于，包括：
    终端获取基站发送的系统信息块消息，所述系统信息块消息中包含用于选择中继终端的参数信息；
    所述终端根据所述参数信息判断自身是否满足成为中继终端的条件；
    若所述终端满足成为中继终端的条件，则上报终端能力信息至所述基站以便所述基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
  2. 如权利要求所述1的方法，其特征在于，所述终端获取基站发送的系统信息块消息，包括：
    所述终端根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端；
    若所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端，则发送用于请求成为中继终端的中继初始化请求消息至所述基站；
    接收所述基站返回的系统信息块消息。
  3. 如权利要求1所述的方法，其特征在于，所述终端获取基站发送的系统信息块消息，包括：
    所述终端监听所述基站周期性广播的系统信息块消息。
  4. 如权利要求1所述的方法，其特征在于，所述终端获取基站发送的系统信息块消息，包括：
    所述终端根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端；
    若所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端，则监听所述基站广播的系统信息块消息。
  5. 如权利要求1所述的方法，其特征在于，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
  6. 如权利要求5所述的方法，其特征在于，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
    用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
    服务的远程终端的数量门限值。
  7. 如权利要求1所述的方法，其特征在于，所述终端能力信息包括以下信息的至少一种：
    终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
  8. 如权利要求2-7任一项所述的方法，其特征在于，在所述终端获取基站发送的系统信息块消息之前，还包括：
    监听所述终端信号覆盖范围内的远程终端的中继请求，记录所述中继请求对应的信息，其中，所述中继请求对应的信息包括发起中继请求的远程终端数量和/或中继请求的优先级；
    根据所述中继请求对应的信息和/或所述终端能力信息确定是否执行根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端的步骤。
  9. 一种通信的方法，其特征在于，包括：
    基站发送系统信息块消息至终端，所述系统信息块消息中包含用于选择中继终端的参数信息；
    在所述终端根据所述参数信息判断自身满足成为中继终端的条件之后，所述基站接收所述终端上报的终端能力信息；
    根据所述基站信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
  10. 如权利要求9所述的方法，其特征在于，所述基站发送系统信息块消息至终端，包括：
    在所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端之后，接收所述终端发送的用于请求成为中继终端的中继初始化请求消息；
    返回系统信息块消息至所述终端。
  11. 如权利要求9所述的方法，其特征在于，所述基站发送系统信息块消息至终端，包括：
    所述基站周期性广播系统信息块消息。
  12. 如权利要求11所述的方法，其特征在于，若所述基站在预设时段内接收到超过预设次数的中继初始化请求消息，则延长广播系统信息块消息的周期。
  13. 如权利要求9所述的方法，其特征在于，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
  14. 如权利要求13所述的方法，其特征在于，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
    用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
    服务的远程终端的数量门限值。
  15. 如权利要求9所述的方法，其特征在于，所述终端能力信息包括以下信息的至少一种：
    终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
  16. 如权利要求9-15任一项所述的方法，其特征在于，在基站发送系统信息块消息至终端之前，还包括：
    获取当前远程终端的中继需求量和/或中继请求的优先级；
    根据当前远程终端的中继需求量和/或中继请求的优先级选择周期性广播系统信息块消息或者仅在接收到中继初始化请求消息时为发送中继初始化请求消息的终端返回系统信息块消息。
  17. 一种终端，其特征在于，包括：
    获取单元，用于获取基站发送的系统信息块消息，所述系统信息块消息中包含用于选择中继终端的参数信息；
    判断单元，用于根据所述参数信息判断所述终端是否满足成为中继终端的条件；
    上报单元，用于若所述终端满足成为中继终端的条件，则上报终端能力信息至所述基站以便所述基站根据信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
  18. 如权利要求17所述的终端，其特征在于，所述获取单元具体用于：
    根据功率容量和/或参考信号接收功率预先判断所述终端能否成为中继终端；
    若所述终端能成为中继终端，则发送用于请求成为中继终端的中继初始化请求消息至所述基站；
    接收所述基站返回的系统信息块消息。
  19. 如权利要求所述17所述的终端，其特征在于，所述获取单元具体用 于：
    监听所述基站周期性广播的系统信息块消息。
  20. 如权利要求所述17所述的终端，其特征在于，所述获取单元具体用于：
    根据功率容量和/或参考信号接收功率预先判断所述终端能否成为中继终端；
    若所述终端能成为中继终端，则监听所述基站广播的系统信息块消息。
  21. 如权利要求17所述的终端，其特征在于，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
  22. 如权利要求21所述的终端，其特征在于，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
    用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
    服务的远程终端的数量门限值。
  23. 如权利要求17所述的终端，其特征在于，所述终端能力信息包括以下信息的至少一种：
    终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
  24. 如权利要求18-23任一项所述的终端，其特征在于，还包括：
    确定单元，用于在所述终端获取基站发送的系统信息块消息之前，监听所述终端信号覆盖范围内的远程终端的中继请求，记录所述中继请求对应的信息，其中，所述中继请求对应的信息包括发起中继请求的远程终端数量和/或中继 请求的优先级；
    根据所述中继请求对应的信息和/或所述终端能力信息确定是否执行根据功率容量和/或参考信号接收功率预先判断自身能否成为中继终端的步骤。
  25. 一种基站，其特征在于，包括：
    发送单元，用于发送系统信息块消息至终端，所述系统信息块消息中包含用于选择中继终端的参数信息；
    接收单元，用于在所述终端根据所述参数信息判断自身满足成为中继终端的条件之后，接收所述终端上报的终端能力信息；
    选择单元，用于根据所述基站信号覆盖范围内各个终端上报的终端能力信息从所述各个终端中选定中继终端进行通信。
  26. 如权利要求25所述的基站，其特征在于，所述发送单元具体用于：
    在所述终端根据功率容量和/或参考信号接收功率预先判断自身能成为中继终端之后，接收所述终端发送的用于请求成为中继终端的中继初始化请求消息；
    返回系统信息块消息至所述终端。
  27. 如权利要求25所述的基站，其特征在于，所述发送单元具体用于：
    周期性广播系统信息块消息。
  28. 如权利要求27所述的基站，其特征在于，所述发送单元还用于：
    若在预设时段内接收到超过预设次数的中继初始化请求消息，则延长广播系统信息块消息的周期。
  29. 如权利要求25所述的基站，其特征在于，所述用于选择中继终端的参数信息，包括参考信号接收功率门限值以及在预设时间内小区变化的次数门限值。
  30. 如权利要求29所述的基站，其特征在于，所述用于选择中继终端的参数信息，还包括以下信息中的至少一种：
    用于表征终端服务能力的功率门限值，所述功率门限值包括对应可执行资源调度的第一门限值、对应可服务所述基站信号覆盖范围外的远程终端的第二门限值以及对应仅可服务所述基站信号覆盖内的终端的第三门限值；
    服务的远程终端的数量门限值。
  31. 如权利要求25所述的基站，其特征在于，所述终端能力信息包括以下信息的至少一种：
    终端电量信息、是否具备资源调度的能力信息、参考信号接收功率信息以及可服务的远程终端的最大数量信息。
  32. 如权利要求25-31任一项所述的基站，其特征在于，所述发送单元还用于：在发送系统信息块消息至终端之前，获取当前远程终端的中继需求量和/或中继请求的优先级；
    根据当前远程终端的中继需求量和/或中继请求的优先级选择周期性广播系统信息块消息或者仅在接收到中继初始化请求消息时为发送中继初始化请求消息的终端返回系统信息块消息。
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