WO2016101561A1 - 一种资源分配方法、控制节点及用户设备 - Google Patents

一种资源分配方法、控制节点及用户设备 Download PDF

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Publication number
WO2016101561A1
WO2016101561A1 PCT/CN2015/081972 CN2015081972W WO2016101561A1 WO 2016101561 A1 WO2016101561 A1 WO 2016101561A1 CN 2015081972 W CN2015081972 W CN 2015081972W WO 2016101561 A1 WO2016101561 A1 WO 2016101561A1
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Prior art keywords
control node
resource
phr
data
subframe
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PCT/CN2015/081972
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English (en)
French (fr)
Inventor
罗薇
陈琳
谢峰
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中兴通讯股份有限公司
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Publication of WO2016101561A1 publication Critical patent/WO2016101561A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This document relates to device-to-device (D2D) technology, especially a resource allocation method, control node, and user equipment.
  • D2D device-to-device
  • D2D device-to-device
  • Device represents a new direction for future communication technologies.
  • -to-Device technology came into being.
  • the application of D2D technology can reduce the burden of cellular networks, reduce the battery power consumption of user equipment, increase the data rate, and improve the robustness of the network infrastructure, which satisfies the requirements of the above high data rate services and proximity services.
  • D2D technology can work in licensed or unlicensed bands, allowing multiple D2D-enabled user equipments, D2D User Equipment (D2D User Equipment) to perform direct discovery with or without network infrastructure. Direct communication.
  • D2D User Equipment D2D User Equipment
  • Direct communication there are three main application scenarios of D2D: one is that UE1 and UE2 perform data interaction under the coverage of the cellular network, and the user plane data does not pass through the network infrastructure, as shown in FIG. 1; For the UE4 under the UE relay transmission of the weak/uncovered area, as shown in the mode 2 of FIG. 1, the UE4 with poor signal quality is allowed to communicate with the network through the UE3 with network coverage nearby, which can help the operator to extend the coverage.
  • the cellular network can not work normally, allowing direct communication between devices, as shown in Figure 1, Mode 3, UE5, UE6 and UE7 control plane and user One-hop or multi-hop data communication is performed without going through the network infrastructure.
  • D2D technology usually includes D2D discovery technology and D2D communication technology.
  • the D2D discovery technology is used to determine whether the first user equipment is adjacent to the second user equipment.
  • the D2D UE can discover the other party by sending or receiving a discovery signal.
  • the D2D communication technology refers to the D2D user equipment. A technique in which some or all of the communication data can communicate directly without going through the network infrastructure.
  • the D2D UE Before performing D2D discovery or D2D communication, the D2D UE needs to obtain respective radio resources separately. According to the progress of the relevant 3GPP standard conference, there are two resource allocations in either D2D discovery or D2D communication.
  • the method is to obtain a resource based on the manner in which the UE selects to obtain the resource allocation (hereinafter referred to as the first resource allocation mode) or the base station allocates a dedicated resource for the UE scheduling (hereinafter referred to as the second resource allocation mode) for D2D discovery. Or D2D communication.
  • the first resource allocation mode is usually pre-allocated by the base station or the system to a D2D resource pool, the UE participating in the D2D discovery or the D2D communication, or the ProSeimity Service based UE listening to the resource pool and passing the The UE selects a method for acquiring a resource allocation to acquire a radio resource, and the second resource allocation mode is configured by the base station to allocate a suitable radio resource to the ProSe UE according to the request of the ProSe UE.
  • the base station allocates the uplink transmit power of the cellular network to the UE in units of subframes, and the size of the transmit power depends on the path loss, the number of allocated resources, and the modulation and coding mode, etc., due to the maximum transmit power, when the UE is in the When only cellular data is transmitted in a subframe, the maximum transmit power of the cellular service is the maximum transmit power of the UE.
  • the maximum transmit power of the cellular service is no longer the maximum transmission of the UE.
  • the UE because the UE also needs to allocate part of the transmit power to the D2D service, that is, the maximum transmit power of the cellular service is the maximum transmit power of the UE minus the transmit power of the D2D service.
  • the base station allocates a subframe position to the UE, and the base station sends a time-resource pattern for transmission (T-RPT) index to the UE, and the UE sends the UE to the UE. Then, the allocated subframe position is determined according to the T-RPT index, and the D2D signal is transmitted at the determined subframe position.
  • T-RPT time-resource pattern for transmission
  • the first resource allocation method is used to acquire resources and perform D2D communication and use.
  • the UEs that acquire resources and perform D2D communication by using the second resource allocation manner exist at the same time. Therefore, according to the current technical solution, the base station is likely to not know which subframes in some cells in the cell transmit D2D signals. In this case, according to the relevant protocol, the UE can inform the base station of the remaining transmit power by using a Power Header Room (PHR).
  • PHR Power Header Room
  • the PHR value is sent only when certain conditions are met, such as when the path loss changes exceed a given range, the timer expires, and the secondary cell (Scell) is activated.
  • the base station can adjust the transmit power of the UE in the next uplink subframe according to the PHR value sent by the UE, thereby allocating the appropriate number of resources and the modulation and coding mode.
  • the D2D UE since it transmits D2D data on a specific subframe, there may be an i-th subframe simultaneously transmitting D2D data and cellular data, and only transmitting cellular data in the (i+1)th subframe.
  • the uplink transmit power of the D2D UE on the cellular network is the same on the i-th subframe and the (i+1)th subframe, then since the maximum transmit power available in the cellular network is different, The PHR values are different.
  • the PHR variation of the UE in the (i+1)th subframe may be larger than the i-th subframe, the PHR is not transmitted, so that the base station In the (i+1)th subframe, the uplink power adjustment allocation is still performed according to the PHR value transmitted in the i-th subframe, which obviously causes an erroneous adjustment decision, which affects the performance of the D2D UE.
  • the transceiver of the UE is fixed, thereby affecting the carrier aggregation (CA) capability of the UE and the multi-antenna (MIMO) capability, if the UE simultaneously transmits D2D data and cellular data in the i-th subframe, then Some transceivers of the UE are used to transmit D2D data, so the transceiver for transmitting and receiving cellular data may be reduced, thereby affecting the CA capability and MIMO capability of the UE to receive cellular data. If the base station does not know the capability change of the UE, it obviously causes Incorrect resource allocation issues affect system performance.
  • CA carrier aggregation
  • MIMO multi-antenna
  • the D2D UE supports the D2D service and the cellular service, and the D2D service and the cellular service may occur at the same time, or may not occur at the same time.
  • the total transmit power and the transmit capability (such as the multi-antenna capability) It is limited, but the related technology does not provide a complete solution for the D2D service and the power and resource allocation of the cellular service of the D2D UE, so that it is difficult to ensure the realization of the D2D service and the cellular service transmission.
  • the technical problem to be solved by the present invention is to provide a resource allocation method, a control node, and a user equipment, which can improve the D2D service and the power and resource allocation scheme of the cellular service of the D2D UE, and ensure the implementation of the D2D service and the cellular service transmission.
  • a resource allocation method including:
  • the control node acquires service transmission status information of the device-to-device (D2D) user equipment UE;
  • the control node allocates transmit power and/or resources to the UE according to the service sending status information of the UE;
  • the service transmission status information includes: a power headroom PHR, or resource information.
  • the step of acquiring the service sending status information of the D2D UE includes:
  • the UE sends the PHR to the control node when any of the following conditions is met:
  • the maximum transmit power of the UE exceeds a preset threshold, where the maximum transmit power of the UE is the maximum transmit power of the UE in the cellular service, and the value is the total transmit power of the UE minus the transmit of the D2D service. Power; or,
  • the PHR change of the UE exceeds a preset threshold
  • the UE transmits D2D data in the current subframe, but does not transmit D2D data in the previous subframe;
  • the UE does not transmit D2D data in the current subframe, but transmits D2D data in the previous subframe.
  • the step of allocating transmit power and/or resources to the UE includes:
  • the control node After receiving the PHR sent by the UE, the control node determines the remaining power of the UE in the current subframe, and allocates cellular uplink transmit power for the subsequent subframe of the UE.
  • the UE includes:
  • the step of acquiring the service sending status information of the UE includes:
  • the UE sends the resource information to the control node when any of the following conditions are met:
  • the D2D resource configuration/allocation information of the UE is changed;
  • the D2D resource sending timer expires; or,
  • the transmission resource pool of the D2D communication and/or discovery of the UE is changed; or the UE is handed over to a new cell; or
  • the step of performing mode switching on the UE includes: converting the UE from a scheduling resource allocation mode to a mode in which the UE selects a resource allocation, or when the UE transitions from an idle state to a connected state.
  • the method further includes: the control node acquiring capability information of the UE or acquiring the PHR.
  • the resource information includes one or a combination of any of the following information:
  • the T-RPT index number of the UE performing D2D communication and/or discovery transmission
  • the resource pool index of the D2D communication and/or the discovery transmission is performed by the UE, where the resource pool of the D2D communication and/or the discovery transmission includes: a scheduling allocation resource pool and a D2D data resource pool;
  • the UE performs D2D communication and/or discovers an index or index list in a transmission resource pool corresponding to the transmitted subframe.
  • the UE is configured to send resource information to the control node as follows:
  • the UE sends the RRC signaling to the base station by using radio resource control;
  • the UE is sent to the control node through an uplink data sharing channel.
  • the step of the control node acquiring the capability information of the UE includes:
  • the control node acquires capability information of the UE from a high-level network element;
  • the UE reports the capability information of the UE to the control node.
  • the capability information of the UE includes: cellular capability information when the UE performs D2D transmission, and cellular capability information when the UE does not perform D2D transmission.
  • the cellular capability information includes at least: carrier aggregation capability, multi-antenna MIMO capability, and/or measurement capability.
  • the step of the control node acquiring the PHR includes:
  • the UE sends the PHR to the control node when the following conditions are met: the maximum transmit power of the UE changes exceeds a preset threshold; or
  • the PHR change of the UE exceeds a preset threshold
  • the UE transmits D2D data in the current subframe, but does not transmit D2D data in the previous subframe;
  • the UE does not transmit D2D data in the current subframe, but transmits D2D data in the previous subframe.
  • the step of allocating transmit power and/or resources to the UE includes:
  • control node allocates a corresponding resource quantity and an encoding manner according to the cellular capability that the UE has in each subframe determined according to the obtained capability information of the UE.
  • the step of allocating transmit power and/or resources to the UE includes:
  • the control node determines, according to whether the transmitted PHR and the current subframe are subframes for transmitting D2D data,
  • the uplink transmit power of the UE on the cellular network is adjusted by using the first PHR or D2D data of the cellular network when transmitting only the cellular network data and the second PHR of the cellular network when the cellular network data is simultaneously transmitted.
  • the control node uses, according to whether the sent PHR and the current subframe are subframes for transmitting D2D data, when the first PHR or D2D data of the cellular network and the cellular network data are simultaneously transmitted when only the cellular network data is sent, the cellular network is simultaneously sent.
  • the step of adjusting the uplink transmit power of the UE in the cellular network by the second PHR includes:
  • the control node adjusts an uplink transmit power of the UE on the cellular network according to the first PHR;
  • the control node adjusts an uplink transmit power of the UE on the cellular network according to the second PHR;
  • the first PHR is a PHR that can be used to transmit cellular line data when only cellular network data is sent; the second PHR is a PHR that can be used to transmit cellular line data when D2D data and cellular network data are simultaneously transmitted.
  • the method further includes: updating the first PHR;
  • the method further includes: updating the second PHR.
  • the step of the control node allocating the transmit power and/or the resource to the UE according to the service sending status information of the UE includes:
  • the source control node sends the resource information of the UE to the target control node;
  • the target control node allocates transmit power and/or resources to the UE according to the resource information of the UE and the capability information or PHR of the UE.
  • the step of the source control node sending the resource information of the UE to the control node in the target includes:
  • the source control node carries the resource information of the UE and sends the information through the X2 or S1 handover related message.
  • the UE includes:
  • Public safety D2D UE and/or non-public safety D2D UE are Public safety D2D UE and/or non-public safety D2D UE; or,
  • D2D relay node and/or non-D2D relay node are D2D relay node and/or non-D2D relay node.
  • control node is a base station, or a UE performing a central control function, or a relay node.
  • a control node includes an acquisition module and a processing module, wherein
  • the acquiring module is configured to: obtain service sending status information of the UE, where the service sending status information includes: PHR, or resource information;
  • the processing module is configured to allocate transmit power and/or resources to the UE according to the service sending status information of the UE.
  • the processing module is configured to allocate a transmit power and/or a resource to the UE according to the following manner:
  • the acquiring module is further configured to: acquire capability information or PHR of the UE;
  • the capability information includes: cellular capability information when the UE performs D2D transmission, and cellular capability information when the UE does not perform D2D transmission; wherein the cellular capability information includes: carrier aggregation capability, multi-antenna MIMO capability, and measurement capability.
  • the processing module is configured to allocate transmit power and/or resources to the UE as follows:
  • the second PHR of the cellular network when transmitted simultaneously with cellular data Adjust the uplink transmit power of the UE in the cellular network.
  • control node further includes a forwarding module, where the forwarding module is configured to: when the control node to which the control node belongs is the source control node, send the resource information of the UE to the target control node.
  • control node is a base station, or a UE performing a central control function, or a relay node.
  • a user equipment includes a sending module, and the sending module is configured to: send a service sending status information of the UE to the control node, where the service sending status information includes: PHR, and/or resource information.
  • the sending module is configured to send the PHR to the control node according to the following manner:
  • the sending module is configured to send resource information to the control node according to the following manner:
  • the UE When the UE receives a request for acquiring D2D resource information sent by a control node and/or a peer entity; or
  • the resource information includes one or a combination of any of the following information:
  • the T-RPT index number of the UE performing D2D communication and/or discovery transmission
  • the UE performs D2D communication and/or discovers an index or index list in a transmission resource pool corresponding to the transmitted subframe.
  • the UE includes:
  • Public safety D2D UE and/or non-public safety D2D UE are Public safety D2D UE and/or non-public safety D2D UE; or,
  • D2D relay node and/or non-D2D relay node are D2D relay node and/or non-D2D relay node.
  • the technical solution of the present application includes the control node acquiring the service transmission status information of the UE, and the control node allocating the transmission power and/or the resource to the UE according to the service transmission status information of the UE.
  • the service sending status information may include: a PHR, or resource information such as a T-RPT index, a subframe number, a resource pool index, and the like.
  • the technical solution of the present invention improves the D2D service of the D2D UE and the power and resource allocation scheme of the cellular service, so that the control node adjusts the uplink transmit power of the cell in time according to the changed PHR or resource information, and ensures the transmission of the D2D service and the cellular service. achieve.
  • FIG. 1 is a schematic diagram of direct discovery/direct communication performed by a D2D UE of the related art
  • FIG. 2 is a flowchart of a resource allocation method according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a resource allocation system according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a first embodiment of a resource allocation method according to the present invention.
  • FIG. 5 is a schematic flowchart diagram of a second embodiment of a resource allocation method according to the present invention.
  • FIG. 6 is a schematic flowchart diagram of a third embodiment of a resource allocation method according to the present invention.
  • FIG. 7 is a schematic flowchart diagram of a fourth embodiment of a resource allocation method according to the present invention.
  • FIG. 8 is a schematic diagram of indicating a sequence number of a D2D subframe in a fifth embodiment of a resource allocation method according to the present invention.
  • FIG. 9 is a schematic flowchart diagram of a sixth embodiment of a resource allocation method according to the present invention.
  • FIG. 2 is a flowchart of a resource allocation method according to an embodiment of the present invention. As shown in FIG. 2, the method at least includes:
  • Step 200 The control node acquires service transmission status information of the UE.
  • the service transmission status information in this step may include: PHR, or resource information such as a T-RPT index, a subframe number, a resource pool index, and the like.
  • the service transmission status information includes the PHR
  • the information about the service delivery status of the D2D UE in this step includes:
  • the UE sends a PHR to the control node when the following conditions are met: the maximum transmit power of the UE changes exceeds a preset threshold; or the PHR of the UE changes exceeds a preset threshold; or the UE sends D2D data in the current subframe, However, the D2D data is not transmitted in the previous subframe; or, the UE does not transmit the D2D data in the current subframe, but transmits the D2D data in the previous subframe.
  • the maximum transmit power of the UE is the maximum transmit power of the UE in the cellular service, and the value is The total transmit power of the UE minus the transmit power of the D2D service.
  • the UE is a UE that performs D2D communication by selecting a resource allocation manner by the UE, or a UE that performs D2D discovery by selecting a resource allocation manner by the UE.
  • the PHR maintained by the UE includes a first PHR and a second PHR.
  • the first PHR is a PHR that can be used to transmit cellular line data when only cellular network data is sent;
  • the second PHR is a PHR that can be used to transmit cellular line data when D2D data and cellular network data are simultaneously transmitted.
  • the UE sends the first PHR/second PHR to the control node, such as the base station, when any of the above conditions are met.
  • the certain time may be a parameter sent by the control node to the UE or a parameter pre-agreed by the protocol.
  • the information about the service transmission status of the acquiring UE in this step includes:
  • the UE sends the resource information to the control node when the following conditions are met: the D2D resource configuration/allocation information of the UE changes; or the D2D resource configuration/allocation timer expires; or the D2D resource sending timer expires; or, the UE
  • the D2D communication and/or the discovered transmission resource pool is changed; or, the UE switches to a new cell; or the UE receives the D2D resource information request sent by the control node and/or the peer entity; or, the UE occurrence mode
  • the UE switches from the mode in which the resource is acquired by scheduling or the UE to the mode in which the resource allocation is selected by the UE; or when the UE changes from the idle state to the connected state.
  • a peer entity here refers to an entity, such as a UE, that does not have central control capabilities as the UE.
  • control node acquires capability information of the UE or acquires a PHR.
  • the resource information includes one or any combination of the following:
  • the T-RPT index number that the UE performs D2D communication and/or discovery transmission
  • the UE performs D2D communication and/or the first transmission uplink and/or downlink subframe number of the discovery transmission;
  • the UE performs D2D communication and/or discovers an index or index list in the transmission resource pool corresponding to the transmitted subframe.
  • the resource pool for D2D communication and/or discovery transmission includes: scheduling allocation resource pool and D2D Data resource pool.
  • the UE may send the D2D resource information to the control node by using any one of the following manners: the UE sends the information to the control node through a control unit (MAC CE) of the media access control; or the UE sends the message to the control node through the MAC subframe; Or, the UE sends the control node to the control node through the physical layer uplink control channel; or the UE sends the information to the base station through radio resource control (RRC) signaling; or the UE sends the information to the control node through the uplink data sharing channel.
  • MAC CE control unit
  • RRC radio resource control
  • the capability information of the control node acquiring the UE includes:
  • the control node obtains capability information of the UE from a high-level network element, such as a mobility management entity (MME), or the UE reports the capability information of the UE to the control node.
  • the capability information includes, but is not limited to, cellular capability information when the UE performs D2D transmission, and cellular capability information when the UE does not perform D2D transmission.
  • the cellular capability information includes, but is not limited to, carrier aggregation capability, multi-antenna MIMO capability, measurement capability, and the like.
  • the obtaining, by the control node, the PHR includes: the UE may send the PHR to the control node in the manner specified by the related protocol; or the method for acquiring the PHR when the service sending status information includes the PHR, in the embodiment of the present invention, the PHR is sent to the control node, that is, The UE sends a PHR to the control node when the following conditions are met: the maximum transmit power of the UE changes exceeds a preset threshold; or the PHR of the UE changes exceeds a preset threshold; or the UE sends D2D data in the current subframe, However, the D2D data is not transmitted in the previous subframe; or, the UE does not transmit the D2D data in the current subframe, but transmits the D2D data in the previous subframe.
  • the UE includes: a UE that performs D2D communication by means of the UE selecting a resource allocation manner; or a UE that performs D2D discovery by acquiring a resource allocation manner by the UE; or a public safety D2D UE and/or a non-public security D2D UE; Alternatively, a D2D relay node and/or a non-D2D relay node.
  • the control node may be a base station, or a UE performing a central control function, or a relay node.
  • Step 201 The control node allocates transmit power and/or resources to the UE according to the service sending status information of the UE.
  • the allocation of the transmission power and/or resources for the UE in this step includes:
  • the control node After receiving the PHR sent by the UE, the control node determines the remaining power of the UE in the current subframe, and allocates a reasonable cellular uplink transmit power for the subsequent subframe of the UE. For example, when the PHR is positive, the cellular uplink transmission of the UE may be improved. Power; when the PHR is negative, the cellular uplink transmit power of the UE can be reduced. How to make a reasonable allocation is easy for a person skilled in the art to implement, and is not used to limit the protection scope of the present invention. The present invention emphasizes that the control node adjusts the uplink uplink transmit power in time according to the changed PHR.
  • the allocation of the transmission power and/or resources for the UE in this step includes:
  • the control node determines, according to the obtained resource information, in which subframes the UE transmits the D2D signal, and in which subframes, the D2D signal is not transmitted, that is, determines the subframe position at which the UE transmits the D2D data;
  • the corresponding reasonable number of resources, coding mode, and the like are allocated;
  • the control node determines, according to the obtained resource information, in which subframes the UE transmits D2D data, and in which subframes, D2D data is not transmitted, that is, determines a subframe position at which the UE transmits D2D data;
  • the control node adjusts the UE according to whether the transmitted PHR and the current subframe are subframes for transmitting D2D data, when the first PHR or D2D data of the cellular network is transmitted only when the cellular network data is transmitted, and the second PHR of the cellular network is simultaneously transmitted.
  • the uplink transmit power of the cellular network specifically:
  • the first PHR is updated, and the updated PHR may be used for determining the uplink transmit power of all subsequent subframes with D2D data transmission until subsequent D2D data is present.
  • the transmitted subframe is updated only after receiving the new PHR; if the subframe in which the PHR is currently transmitted is a subframe in which the D2D data is not transmitted, the second PHR is updated, and the updated PHR value can be used for all subsequent D2D data transmissions.
  • the decision of the uplink transmit power of the subframe is not updated until after the new PHR is received in the subframe without the D2D data transmission;
  • the control node adjusts the uplink transmit power of the UE on the cellular network according to the first PHR; if the current subframe is a subframe without D2D data transmission, the control node according to the second PHR Adjust the uplink transmit power of the UE in the cellular network.
  • the step 201 includes: the source control node sends the resource information of the UE to the target control node; the target control node allocates the transmit power to the UE according to the resource information of the UE, the capability information of the UE, or the PHR. / or resources.
  • the source control node sends the resource information of the UE to the target central control node, including:
  • the source control node transmits the resource information of the UE by using the X2 or S1 handover related message, such as an X2 HO request message, an S1 HO request message, or a HO Required message.
  • the X2 or S1 handover related message such as an X2 HO request message, an S1 HO request message, or a HO Required message.
  • the method of the embodiment of the present invention improves the D2D service of the D2D UE and the power and resource allocation scheme of the cellular service, so that the control node adjusts the uplink transmit power of the cell according to the changed PHR or resource information, and ensures the D2D service and the cellular service transmission.
  • FIG. 3 is a schematic structural diagram of a resource allocation system according to an embodiment of the present invention. As shown in FIG. 3, at least a control node 31 and a UE 32 are included.
  • the control node 31 includes at least an obtaining module 311 and a processing module 312, where
  • the obtaining module 311 is configured to: obtain service sending status information of the UE.
  • the service sending status information may include: a PHR, or resource information such as a T-RPT index, a subframe number, a resource pool index, and the like;
  • the acquiring module is further configured to: acquire the capability information of the UE or the PHR.
  • the capability information includes, but is not limited to, cellular capability information when the UE performs D2D transmission, and cellular capability information when the UE does not perform D2D transmission.
  • the cellular capability information includes, but is not limited to, carrier aggregation capability, multi-antenna MIMO capability, measurement capability, and the like.
  • the processing module 312 is configured to allocate transmit power and/or resources to the UE according to the service sending status information of the UE. Specifically set to:
  • the service transmission status information includes the PHR
  • the PHR sent by the UE is received, and the remaining power of the UE in the current subframe is determined, and a reasonable cellular uplink transmission power is allocated to the UE; or
  • the service transmission status information includes the resource information, determining, according to the obtained resource information, a subframe position at which the UE transmits the D2D data; and assigning a corresponding reasonable number of resources, a coding manner, etc. according to the cellular capability of the UE in each subframe; or
  • the UE When the service transmission status information includes resource information, determining, according to the obtained resource information, the UE sends the The subframe position at which the D2D data is sent; according to whether the transmitted PHR and the current subframe are subframes for transmitting D2D data, when the first PHR or D2D data of the cellular network and the cellular network data are simultaneously transmitted when only the cellular network data is transmitted, the cellular network is simultaneously transmitted.
  • the second PHR adjusts the uplink transmit power of the UE in the cellular network.
  • the control node further includes a forwarding module 313, configured to: when the control node to which the control node belongs is the source control node, send the resource information of the UE to the target control node.
  • the control node may be a base station, or a UE performing a central control function, or a relay node.
  • the UE 32 includes at least a sending module 321 configured to: send the service sending status information of the UE to the control node.
  • the UE When the maximum transmit power of the UE changes exceeds a preset threshold; or when the PHR of the UE changes exceeds a preset threshold; or, the UE transmits D2D data in the current subframe, but does not transmit D2D data in the previous subframe. Or; when the UE does not transmit D2D data in the current subframe, but transmits D2D data in the previous subframe, the service transmission status information is sent to the control node, and the service transmission status information is PHR.
  • the D2D resource configuration/allocation information of the UE changes; or when the D2D resource configuration/allocation timer expires; or when the D2D resource transmission timer expires; or, the D2D communication and/or the discovered transmission resource at the UE
  • the pool changes; or when the UE switches to a new cell; or when the UE receives the D2D resource information request sent by the control node and/or the peer entity; or, when the UE undergoes mode switching, the control The node sends the service sending status information, and the service sending status information is resource information.
  • the resource information includes one or any combination of the following:
  • the T-RPT index number that the UE performs D2D communication and/or discovery transmission
  • the UE performs D2D communication and/or the first transmission uplink and/or downlink subframe number of the discovery transmission;
  • the UE includes a UE that performs D2D communication by selecting a resource allocation manner by the UE, or a UE that performs D2D discovery by selecting a resource allocation manner by the UE; or a public safety D2D UE and/or a non-public security D2D UE. Or, a D2D relay node and/or a non-D2D relay node.
  • FIG. 4 is a schematic flowchart of a first embodiment of a resource allocation method according to the present invention. As shown in FIG. 4, in the first embodiment, assuming that the control node is a base station, the service sending status information of the UE is a T-RPT index, and the following steps are included. :
  • Step 400 The UE receives the sending resource pool information sent by the base station.
  • the sending resource pool may be determined according to an existing protocol, and is not intended to limit the scope of protection of the present invention, and details are not described herein again.
  • Step 401 The UE selects a subframe position for transmitting D2D data to determine a T-RPT index.
  • Step 402 The UE sends the determined T-RPT index to the base station when any of the following conditions are met: when the D2D resource configuration/allocation information of the UE changes; or when the D2D resource configuration/allocation timer expires; or, D2D When the resource transmission timer expires; or when the UE's D2D communication and/or the discovered transmission resource pool changes; or when the UE switches to a new cell; or, the central control node and/or the peer entity receives the transmission When the UE acquires the D2D resource information request, or when the UE performs mode switching, for example, the UE switches from the mode of acquiring resources through scheduling or non-contention mode to the mode of obtaining resource allocation by the UE; or when the UE changes from the idle state to the connected state. .
  • the manner in which the UE sends the determined T-RPT index to the base station may include any one of the following: the UE sends the signal to the base station through the MAC CE; or the UE sends the signal to the base station through the MAC sub-head; or the UE passes the physical layer uplink control channel. Sending to the base station; or, the UE sends the RRC message to the base station.
  • Step 403 After receiving the T-RPT index sent by the UE, the base station determines, by using a lookup table, the subframe position at which the UE sends the D2D data.
  • the table refers to a mapping table agreed by the protocol.
  • each index corresponds to a set of subframe positions.
  • Step 404 The base station acquires capability information of the UE, for example, the base station acquires capability information of the UE from a high-level network element (for example, an MME); or the base station sends the capability information of the UE according to the UE.
  • a high-level network element for example, an MME
  • the capability information includes cellular capability information when the UE performs D2D transmission, and the UE does not Cellular capability information when performing D2D transmission.
  • Step 405 After determining, by the UE, the subframe position of the D2D data, the UE determines the cellular data transmission/reception capability that the UE has in each subframe, and allocates a corresponding reasonable number of resources, coding mode, and the like according to different capabilities of each subframe. Specifically, how to assign a well-known technology to those skilled in the art is not intended to limit the scope of the present invention, and details are not described herein.
  • the cellular capabilities include: carrier aggregation capability, multi-antenna MIMO capability, and measurement capability.
  • step 401 to step 402 are: the UE selects a subframe position for transmitting D2D data, determines a resource pool index that the UE performs D2D discovery transmission, and sends the determined resource pool index to the base station; Step 403: After receiving the resource pool index sent by the UE, the base station determines the sending resource pool selected by the UE to determine a subframe position at which the UE may send D2D communication data. Then, according to the obtained capability information of the UE, the UE is allocated an appropriate number of resources, a coding mode, and the like.
  • FIG. 5 is a schematic flowchart of a second embodiment of a resource allocation method according to the present invention. As shown in FIG. 5, in the second embodiment, assuming that the control node is a base station, the service sending status information of the UE is a T-RPT index, and the following steps are included. :
  • Step 500 The UE receives the sending resource pool information sent by the base station.
  • Step 501 The UE selects a subframe position for transmitting D2D data, and determines a T-RPT index.
  • Step 502 The UE sends the determined T-RPT index to the base station when any of the following conditions are met: when the D2D resource configuration/allocation information of the UE changes; or when the D2D resource configuration/allocation timer expires; or, D2D When the resource transmission timer expires; or when the UE's D2D communication and/or the discovered transmission resource pool changes; or when the UE switches to a new cell; or, the central control node and/or the peer entity receives the transmission When the UE acquires the D2D resource information request, or when the UE performs mode switching, for example, the UE switches from the mode of acquiring resources through scheduling or non-contention mode to the mode of obtaining resource allocation by the UE; or when the UE changes from the idle state to the connected state. Wait.
  • the manner in which the UE sends the determined T-RPT index to the base station may include any one of the following: the UE sends the signal to the base station through the MAC CE; or the UE sends the signal to the base station through the MAC sub-head; or the UE passes the physical layer uplink control channel. Sending to the base station; or, the UE sends the message through the RRC message. Send to the base station.
  • Step 503 The UE calculates an uplink PHR of the current subframe, and sends the uplink PHR to the base station. How to calculate the well-known technology of the person skilled in the art, and is not intended to limit the scope of protection of the present invention, and details are not described herein.
  • Step 504 After receiving the T-RPT index sent by the UE, the base station determines, by using a lookup table, the subframe position at which the UE sends the D2D data.
  • Step 505 The base station receives the PHR sent by the UE, and according to the T-RPT index, it can be known whether the current subframe has D2D data transmission. If the subframe in which the PHR is currently transmitted is a subframe for D2D data transmission, the first PHR is updated, and the updated PHR is updated.
  • Step 505 The base station according to the T-RPT index sent by the UE, whether the current subframe has D2D data transmission, and if the current subframe is a subframe with D2D communication data transmission, the base station adjusts the uplink of the UE in the cellular network according to the first PHR. Transmit power; if the current subframe is a subframe without D2D data transmission, the base station adjusts the uplink transmit power of the UE on the cellular network according to the second PHR.
  • the UE sends the resource information to the control node, where the resource information includes one or more of the following: Any combination:
  • the uplink subframe number that the UE performs D2D discovery transmission
  • the first uplink subframe number of the D2D discovery transmission performed by the UE
  • the UE performs D2D communication and/or discovers the sequence number of the D2D subframe indicated by the transmission resource pool corresponding to the transmitted uplink subframe.
  • FIG. 6 is a schematic flowchart diagram of a third embodiment of a resource allocation method according to the present invention, as shown in FIG.
  • the control node is the UE that performs the central control function, that is, UE2, and the service transmission status information of the UE is D2D resource information; the following steps are included:
  • Step 600 The first user equipment (UE1) sends D2D resource information to the second user equipment (UE2).
  • resource information includes:
  • UE1 performs D2D communication and/or discovery transmission T-RPT index number
  • UE1 performs D2D communication and/or an uplink subframe number of the discovery transmission
  • the UE1 performs D2D communication and/or the first transmission uplink subframe number of the discovery transmission;
  • UE1 performs resource pooling indexing of D2D communication and/or discovery transmission
  • the UE1 performs D2D communication and/or searches for an index of a transmission resource pool corresponding to the transmitted uplink subframe.
  • Step 601 UE1 sends a PHR to UE2.
  • Step 602 After receiving the resource pool information sent by the UE1, the UE2 determines that the UE1 subsequently transmits the subframe of the D2D data, thereby determining the subframe position of the D2D data.
  • Step 603 After receiving the PHR, the UE2 determines the power adjustment value and/or the modulation and coding mode of the UE1, and sends the determined power adjustment value and/or the modulation and coding mode to the UE1. For example, when the PHR is positive, the cellular uplink transmit power of the UE can be improved; when the PHR is negative, the cellular uplink transmit power of the UE can be reduced. How to make a reasonable allocation is easy for a person skilled in the art to implement, and is not used to limit the protection scope of the present invention. The present invention emphasizes that the control node adjusts the uplink uplink transmit power in time according to the changed PHR.
  • steps 600 and 602 indicate that adjustment is performed by transmitting resources
  • steps 601 and 603 indicate that adjustment is performed by transmitting PHR
  • the two methods may be performed in the order of this embodiment. Alternatively, it may be performed separately, that is, only by transmitting a resource, or by a method of transmitting a PHR.
  • FIG. 7 is a schematic flowchart of a fourth embodiment of a resource allocation method according to the present invention. As shown in FIG. 7, in the fourth embodiment, assuming that the control node is a base station, and the base station initiates a request to obtain resource information, the following steps are included:
  • Step 700 The base station sends a D2D transmission resource pool by using a broadcast message.
  • the transmission resource pool includes a resource pool transmission period and a pattern within the period.
  • Step 701 After receiving the transmission resource pool, the UE selects and determines a subframe for transmitting D2D data.
  • Step 702 The base station sends the acquiring D2D resource information request information to the UE by using dedicated signaling.
  • Step 703 After receiving the D2D resource information request information sent by the base station, the UE feeds back the D2D resource information to the base station.
  • the D2D resource information that is fed back in this step includes: a sending resource pool corresponding to the uplink subframe in which the UE performs D2D communication and/or discovery transmission.
  • the sequence number of the indicated D2D subframe is fed back to the base station.
  • FIG. 8 is a schematic diagram showing the sequence number of the D2D subframe in the fifth embodiment of the resource allocation method according to the present invention, wherein the shaded hatching indicates the D2D resource subframe, and the oblique grid shade indicates the UE D2D data subframe, as shown in FIG.
  • the pattern pattern indicates that the ⁇ 1, 2, 9, 10, 17, 18, 25, 26, 33, 34 ⁇ subframes in each period are D2D transmission subframe positions, if the UE Selecting to start transmitting D2D data in the ninth subframe in the period, the UE sends the pattern number corresponding to the ninth subframe (ie, 3) as D2D resource information to the base station.
  • the D2D resource information that is fed back in this step includes: the UE feeds back the T-RPT index number of the D2D transmission to the base station.
  • Step 704 The base station receives the D2D resource information sent by the UE, and confirms that the UE sends the subframe position of the D2D signal. specifically,
  • the base station may determine the subframe position of the first D2D data of the UE according to the pattern sequence number sent by the UE, and determine the subframe position of the retransmitted D2D data according to the protocol agreed by the protocol, for example: In the D2D transmission resource pool shown in FIG. 8, the base station can determine that the UE transmits D2D data in the 9, 10, 17, and 18 subframes.
  • the base station searches for a D2D subframe bitmap list according to the T-RPT index number, and determines the subframe position at which the UE transmits the D2D signal.
  • the mapping relationship between the T-RPT index number and the D2D subframe bitmap list is agreed by the protocol.
  • Step 705 The base station acquires the wireless air interface capability of the UE's cell. For example, the base station acquires the capability information of the UE from a high-level network element (for example, an MME); or the base station sends the capability information of the UE according to the UE.
  • a high-level network element for example, an MME
  • Step 706 The base station determines different cellular capabilities of the UE in each subframe, and allocates corresponding reasonable resources according to different capabilities of each subframe.
  • Cellular capabilities include, but are not limited to, carrier aggregation capabilities, multi-antenna MIMO capabilities, and measurement capabilities.
  • FIG. 9 is a schematic flowchart of a sixth embodiment of a resource allocation method according to the present invention. As shown in FIG. 9, in the sixth embodiment, assuming that the control node is a base station, and the UE switches from the source base station to the target base station, the following steps are included:
  • Step 900 After obtaining the D2D resource information sent by the UE, the source eNB1 sends the D2D resource information of the UE to the target eNB2.
  • Step 901 The target eNB 2 knows in which subframes the new access UE transmits the D2D signal in which subframes the D2D signal does not transmit the D2D signal according to the obtained D2D resource information, thereby allocating suitable cellular communication resources to the UE.
  • the D2D resource information includes any combination of one or more of the following:
  • the T-RPT index number that the UE performs D2D communication and/or discovery transmission
  • the UE performs D2D communication and/or the uplink subframe number of the discovery transmission;
  • the first uplink subframe number of the UE performing D2D communication and/or discovery transmission
  • the UE performs D2D communication and/or discovers the sequence number of the D2D subframe indicated by the transmission resource pool corresponding to the transmitted uplink subframe.
  • the D2D communication and/or discovery resource pool includes a scheduling allocation resource pool and a D2D data resource pool.
  • the technical solution of the present invention improves the D2D service of the D2D UE and the power and resource allocation scheme of the cellular service, so that the control node adjusts the uplink transmit power of the cell in time according to the changed PHR or resource information, and ensures the transmission of the D2D service and the cellular service. achieve. Therefore, the present invention has strong industrial applicability.

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Abstract

一种资源分配方法、控制节点及用户设备，包括控制节点获取用户设备(UE)的业务发送状况信息；控制节点根据UE的业务发送状况信息，为UE分配发射功率和/或资源。其中，业务发送状况信息可以包括：功率余量(PHR)、或资源信息如时间资源位置(T-RPT)索引、子帧号、资源池索引等。本发明技术方案完善了设备到设备(D2D)UE的D2D业务和蜂窝业务的功率和资源分配方案，使得控制节点根据变化的PHR或资源信息及时对蜂窝上行发射功率进行了调整，确保了D2D业务和蜂窝业务传输的实现。

Description

一种资源分配方法、控制节点及用户设备 技术领域
本文涉及设备到设备(D2D，Device-to-Device)技术，尤指一种资源分配方法、控制节点及用户设备。
背景技术
随着无线多媒体业务的发展，一方面，人们对高数据速率和用户体验的需求也日益增长；另一方面，公共安全、社交网络、近距离数据共享、本地广告等应用场景使得人们对了解附近人或事物并与之通信即邻近服务(PS，Proximity Services)的需求也逐渐增加。这样一来，就会对传统蜂窝网络的系统容量和覆盖提出较高的要求。
但是，传统的以基站为中心的蜂窝网络，对高数据速率以及邻近服务的支持方面存在明显的局限性，在这种需求背景下，代表未来通信技术发展新方向的设备到设备(D2D，Device-to-Device)技术应运而生。D2D技术的应用，可以减轻蜂窝网络的负担、减少用户设备的电池功耗、提高数据速率，并改善网络基础设施的鲁棒性，很好地满足上述高数据速率业务和邻近服务的要求。
D2D技术可以工作在授权频段或非授权频段，允许多个支持D2D功能的用户设备即D2D用户设备(D2D UE，D2D User Equipment)在有网络基础设施或无网络基础设施的情况下进行直接发现/直接通信。目前，D2D的应用场景主要有三种：一种是，UE1和UE2在蜂窝网络的覆盖下进行数据交互，用户面数据不经过网络基础设施，如图1所示的模式1；另一种是，对于弱/无覆盖区域的UE中继传输下的UE4，如图1所示的模式2，允许信号质量较差的UE4通过附近有网络覆盖的UE3与网络进行通信，这样能帮助运营商扩展覆盖、提高容量；还有一种是，在发生地震或紧急情况，蜂窝网络不能正常工作的情况下，允许设备间直接通信，如图1所示的模式3，UE5，UE6和UE7间控制面和用户面都不经过网络基础设施而进行一跳或多跳的数据通信。
D2D技术通常包括D2D发现技术和D2D通信技术。其中，D2D发现技术是指，用于确定第一用户设备是否邻近第二用户设备的技术，通常，D2D UE间可通过发送或接收发现信号来发现对方；D2D通信技术是指，D2D用户设备之间部分或全部通信数据可以不通过网络基础设施而直接进行通信的技术。
D2D UE在进行D2D发现或D2D通信之前，首先，都需要分别获取各自相应的无线资源，根据相关3GPP标准会议的进展，无论是D2D发现还是D2D通信中的获取无线资源，都存在两种资源分配方式，即基于UE选择获取资源分配的方式获取资源(本文中简称为第一资源分配方式)或是由基站为UE调度分配专有的资源(本文中简称为第二资源分配方式)进行D2D发现或D2D通信。其中，第一资源分配方式通常由基站或是系统预分配一个D2D资源池，参与D2D发现或D2D通信的UE，或者成为邻近服务UE(ProSe UE，Proximity Service based UE)监听该资源池，并通过UE选择获取资源分配的方式获取无线资源；而第二资源分配方式由基站根据ProSe UE的请求为ProSe UE分配合适的无线资源。
相关技术中，基站以子帧为单位为UE分配蜂窝网的上行发射功率，发射功率的大小取决于路损，分配资源数以及调制编码方式等，由于受限于最大发射功率，当UE在该子帧内只发送蜂窝数据时，蜂窝业务的最大发射功率即为UE的最大发射功率。但是，对于D2D UE来说，在一个子帧内存在同时发送蜂窝数据和D2D数据的可能即D2D业务和蜂窝业务同时发生，那么，此时蜂窝业务的最大发射功率就不再是UE的最大发射功率，因为UE还需要分配部分发射功率给D2D业务，即蜂窝业务的最大发射功率为UE的最大发射功率减去D2D业务的发射功率。当D2D UE通过第二资源分配方式获取资源并进行D2D通信时，由基站为UE分配子帧位置，基站将时间资源位置(T-RPT，Time-Resource Pattern for Transmission)索引下发给UE，UE则根据T-RPT索引确定分配的子帧位置，并在确定出的子帧位置发送D2D信号。但是，如果UE通过第一资源分配方式获取资源进行D2D通信，则由UE来决定发送D2D信号的子帧位置，基站是不会知道的。
在一个小区中，使用第一资源分配方式获取资源并进行D2D通信和使用 通过第二资源分配方式获取资源并进行D2D通信的UE是同时存在的，所以按照目前的技术方案，基站很有可能不知道小区中的某些UE在哪些子帧会发送D2D信号。对于这种情况，按照相关协议，UE可以通过发送功率余量(PHR，Power Header Room)告诉基站剩余发射功率的大小，对于非D2D UE来说，只涉及蜂窝业务发送，PHR值的变化是缓慢的，UE不会需要经常发送，只有满足特定的条件，比如路损变化超过给定的范围、定时器超时以及辅小区(Scell)激活等时才会发送PHR值。基站根据UE发送的PHR值可以调整UE在下一个上行子帧的发射功率大小，从而分配合适的资源个数以及调制编码方式。但是，对于D2D UE来说，由于其是在特定的子帧上发送D2D数据的，可能存在第i个子帧同时发送D2D数据和蜂窝数据，在第(i+1)个子帧只发送蜂窝数据的可能，这种情况下，如果在第i个子帧和第(i+1)个子帧上，D2D UE在蜂窝网的上行发射功率相同，那么，由于其在蜂窝网可用的最大发射功率不同，其PHR值是不同的，根据相关的PHR发送条件，尽管相比第i个子帧，UE在第(i+1)个子帧的PHR变化可能较大，但仍然不会对PHR进行发送，这样，基站在第(i+1)个子帧仍然按照在第i个子帧发送的PHR值进行上行功率调整分配，显然造成了错误的调整判决，影响了D2D UE性能。
另一方面，由于UE的收发机是固定的，从而影响到UE的载波聚合(CA)能力以及多天线(MIMO)能力，如果UE在第i个子帧同时发送D2D数据和蜂窝数据，那么，由于UE的部分收发机用于发送D2D数据，因此用于收发蜂窝数据的收发机可能会减少从而会影响到了UE接收蜂窝数据的CA能力和MIMO能力，如果基站不知道UE的能力变化，显然会造成错误的资源分配问题，影响系统的性能。
综上所述，根据相关需求D2D UE支持D2D业务和蜂窝业务，D2D业务和蜂窝业务可能同时发生，也有可能非同时发生，对于D2D UE来说，总的发射功率和发射能力(如多天线能力)是受限的，但是，相关技术并未对D2D UE的D2D业务和蜂窝业务的功率和资源分配提供完善的解决方案，这样很难确保D2D业务和蜂窝业务传输的实现。
发明内容
本发明要解决的技术问题是提供一种资源分配方法、控制节点及用户设备，能够完善D2D UE的D2D业务和蜂窝业务的功率和资源分配方案，确保D2D业务和蜂窝业务传输的实现。
为了达到本发明目的，采用如下技术方案：
一种资源分配方法，包括：
控制节点获取设备到设备(D2D)用户设备UE的业务发送状况信息；
控制节点根据所述UE的业务发送状况信息，为所述UE分配发射功率和/或资源；
其中，所述业务发送状况信息包括：功率余量PHR、或资源信息。
可选地，当所述业务发送状况信息包括PHR时，所述获取D2D UE的业务发送状况信息的步骤包括：
所述UE在满足以下任一条件时，向所述控制节点发送所述PHR：
所述UE的最大发射功率变化超过预先设置的阈值，其中，UE的最大发射功率为所述UE在蜂窝业务的最大发射功率，其值为所述UE总的最大发射功率减去D2D业务的发射功率；或者，
所述UE的PHR变化超过预先设置的阈值；或者，
所述UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据；或者，
所述UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据。
可选地，所述为UE分配发射功率和/或资源的步骤包括：
所述控制节点收到所述UE发送的PHR后，确定所述UE在当前子帧的剩余功率，为所述UE后续子帧分配蜂窝上行发射功率。
可选地，所述UE包括：
通过UE选择获取资源分配的方式进行D2D通信的UE；或者，
通过UE选择获取资源分配的方式进行D2D发现的UE。
可选地，当所述业务发送状况信息包括资源信息时，所述获取UE的业务发送状况信息的步骤包括：
所述UE在满足以下任一条件时，向所述控制节点发送所述资源信息：
所述UE的D2D资源配置/分配信息发生改变；或，
D2D资源配置/分配定时器超时；或，
D2D资源发送定时器超时；或，
所述UE的D2D通信和/或发现的发送资源池发生改变；或，所述UE切换到一个新的小区；或，
所述UE收到控制节点和/或对等实体发送的获取D2D资源信息请求；或，
所述UE发生模式转换时，其中，所述UE发生模式转换的步骤包括：所述UE从调度资源分配模式转换为UE选择资源分配的模式，或者UE从空闲态转为连接态时。
可选地，该方法还包括：所述控制节点获取所述UE的能力信息或者获取所述PHR。
可选地，所述资源信息包括以下信息中的一种或者任意几种的组合：
所述UE进行D2D通信和/或发现传输的T-RPT索引号；
所述UE进行D2D通信和/或发现传输的上行和/或下行子帧号；
所述UE进行D2D通信和/或发现传输的首传上行和/或下行子帧号；
所述UE进行D2D通信和/或发现传输的资源池索引；其中，D2D通信和/或发现传输的资源池包括：调度分配资源池以及D2D数据资源池；
所述UE进行D2D通信和/或发现传输的子帧对应的发送资源池中的索引或索引列表。
可选地，所述UE设置成按照如下方式向所述控制节点发送资源信息：
通过以下任一方式向控制节点发送D2D资源信息：
所述UE通过媒体接入控制的控制单元MAC CE发送给控制节点；
所述UE通过MAC子帧头发送给控制节点；
所述UE通过物理层上行控制信道发送给控制节点；
所述UE通过无线资源控制RRC信令发送给基站；
所述UE通过上行数据共享信道发送给控制节点。
可选地，所述控制节点获取所述UE的能力信息的步骤包括：
所述控制节点从高层网元，获取所述UE的能力信息；或者，
所述UE将所述UE的能力信息上报给所述控制节点。
可选地，所述UE的能力信息包括：所述UE进行D2D传输时的蜂窝能力信息，以及所述UE不进行D2D传输时的蜂窝能力信息。
可选地，所述蜂窝能力信息至少包括：载波聚合能力、多天线MIMO能力和/或测量能力。
可选地，所述控制节点获取PHR的步骤包括：
所述UE在满足以下任一条件时，向控制节点发送所述PHR：所述UE的最大发射功率变化超过预先设置的阈值；或，
所述UE的PHR变化超过预先设置的阈值；或，
所述UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据；或，
所述UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据。
可选地，所述为UE分配发射功率和/或资源的步骤包括：
所述控制节点根据获得的资源信息确定所述UE发送D2D数据的子帧位置；
所述控制节点根据所述获得的UE的能力信息确定的UE在各个子帧所具有的蜂窝能力，分配相应的资源数目和编码方式。
可选地，所述为UE分配发射功率和/或资源的步骤包括：
所述控制节点根据获得的资源信息确定所述UE发送D2D数据的子帧位置；
所述控制节点根据发送的PHR及当前子帧是否为发送D2D数据的子帧， 采用仅发送蜂窝网数据时蜂窝网的第一PHR或D2D数据和蜂窝网数据同时发送时蜂窝网的第二PHR调整所述UE在蜂窝网的上行发射功率。
可选地，所述控制节点根据发送的PHR及当前子帧是否为发送D2D数据的子帧，采用仅发送蜂窝网数据时蜂窝网的第一PHR或D2D数据和蜂窝网数据同时发送时蜂窝网的第二PHR调整所述UE在蜂窝网的上行发射功率的步骤包括：
如果所述当前子帧是有D2D数据发送的子帧，所述控制节点根据第一PHR来调整UE在蜂窝网的上行发射功率；
如果所述当前子帧是没有D2D数据发送的子帧，所述控制节点根据第二PHR来调整UE在蜂窝网的上行发射功率；
其中，第一PHR为仅发送蜂窝网数据时可用于发送蜂窝网上行数据的PHR；第二PHR为D2D数据和蜂窝网数据同时发送时可用于发送蜂窝网上行数据的PHR。
可选地，如果所述当前发送PHR的子帧为D2D数据发送的子帧，该方法还包括：更新所述第一PHR；
如果所述当前发送PHR的子帧为不发送D2D数据的子帧，该方法还包括：更新所述第二PHR。
可选地，所述控制节点为源控制节点时，所述控制节点根据所述UE的业务发送状况信息，为所述UE分配发射功率和/或资源的步骤包括：
源控制节点向目标控制节点发送所述UE的资源信息；
所述目标控制节点根据所述UE的资源信息，及所述UE的能力信息或PHR，为所述UE分配发射功率和/或资源。
可选地，所述源控制节点向目标中控制节点发送所述UE的资源信息的步骤包括：
所述源控制节点通过X2或S1切换相关消息携带所述UE的资源信息进行发送。
可选地，所述UE包括：
通过UE选择获取资源分配的方式进行D2D通信的UE；或者，
通过UE选择获取资源分配的方式进行D2D发现的UE；或者，
公共安全D2D UE和/或非公共安全D2D UE；或者，
D2D中继节点和/或非D2D中继节点。
可选地，所述控制节点是基站、或执行中央控制功能的UE、或中继节点。
一种控制节点，包括获取模块和处理模块，其中，
所述获取模块设置成：获取UE的业务发送状况信息，其中，业务发送状况信息包括：PHR、或资源信息；
所述处理模块设置成：根据所述UE的业务发送状况信息，为所述UE分配发射功率和/或资源。
可选地，当所述业务发送状况信息包括PHR时，所述处理模块设置成按照如下方式为UE分配发射功率和/或资源：
收到所述UE发送的PHR，确定所述UE在当前子帧的剩余功率，为所述UE分配蜂窝上行发射功率。
可选地，当所述UE的业务发送状况信息包括资源信息时，所述获取模块还设置成：获取所述UE的能力信息或者PHR；
其中，能力信息包括：UE进行D2D传输时的蜂窝能力信息，以及UE不进行D2D传输时的蜂窝能力信息；其中，所述蜂窝能力信息包括：载波聚合能力、多天线MIMO能力、测量能力。
可选地，所述处理模块设置成按照如下方式为UE分配发射功率和/或资源：
根据获得的资源信息确定所述UE发送D2D数据的子帧位置；根据所述UE在多个子帧所具有的蜂窝能力，分配相应的资源数目和编码方式；或者
根据获得的资源信息确定所述UE发送D2D数据的子帧位置；根据发送的PHR及当前子帧是否为发送D2D数据的子帧，采用仅发送蜂窝网数据时蜂窝网的第一PHR或D2D数据和蜂窝网数据同时发送时蜂窝网的第二PHR 调整UE在蜂窝网的上行发射功率。
可选地，所述控制节点还包括转发模块，该转发模块设置成：在自身所属控制节点为源控制节点时，向目标控制节点发送所述UE的资源信息。
可选地，所述控制节点是基站、或执行中央控制功能的UE、或中继节点。
一种用户设备UE，包括发送模块，该发送模块设置成：向控制节点发送UE的业务发送状况信息，其中，业务发送状况信息包括：PHR、和/或资源信息。
可选地，当所述业务发送状况信息为PHR时，所述发送模块设置成按照如下方式向所述控制节点发送PHR：
在所述UE的最大发射功率变化超过预先设置的阈值时；或者，
在所述UE的PHR变化超过预先设置的阈值时；或者，
在所述UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据时；或者，
所述在UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据时，
向所述控制节点发送PHR。
可选地，当所述业务发送状况信息为资源信息时，所述发送模块设置成按照如下方式向所述控制节点发送资源信息：
在所述UE的D2D资源配置/分配信息发生改变时；或，
在D2D资源配置/分配定时器超时时；或，
在D2D资源发送定时器超时时；或，
在所述UE的D2D通信和/或发现的发送资源池发生改变时；或，
在所述UE切换到一个新的小区时；或，
在所述UE收到控制节点和/或对等实体发送的获取D2D资源信息请求时；或，
在所述UE发生模式转换时，
向所述控制节点发送资源信息。
可选地，所述资源信息包括以下信息中的一种或者任意几种的组合：
所述UE进行D2D通信和/或发现传输的T-RPT索引号；
所述UE进行D2D通信和/或发现传输的上行和/或下行子帧号；
所述UE进行D2D通信和/或发现传输的首传上行和/或下行子帧号；
所述UE进行D2D通信和/或发现传输的资源池索引；
所述UE进行D2D通信和/或发现传输的子帧对应的发送资源池中的索引或索引列表。
可选地，所述UE包括：
通过UE选择获取资源分配的方式进行D2D通信的UE；或者，
通过UE选择获取资源分配的方式进行D2D发现的UE；或者，
公共安全D2D UE和/或非公共安全D2D UE；或者，
D2D中继节点和/或非D2D中继节点。
与相关技术相比，本申请技术方案包括控制节点获取UE的业务发送状况信息；控制节点根据UE的业务发送状况信息，为UE分配发射功率和/或资源。其中，业务发送状况信息可以包括：PHR、或资源信息如T-RPT索引、子帧号、资源池索引等。本发明技术方案完善了D2D UE的D2D业务和蜂窝业务的功率和资源分配方案，使得控制节点根据变化的PHR或资源信息及时对蜂窝上行发射功率进行了调整，确保了D2D业务和蜂窝业务传输的实现。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图概述
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部 分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为相关技术的D2D UE进行直接发现/直接通信的示意图；
图2为本发明实施例资源分配方法的流程图；
图3为本发明实施例资源分配系统的组成结构示意图；
图4为本发明资源分配方法的第一实施例的流程示意图；
图5为本发明资源分配方法的第二实施例的流程示意图；
图6为本发明资源分配方法的第三实施例的流程示意图；
图7为本发明资源分配方法的第四实施例的流程示意图；
图8为本发明资源分配方法的第五实施例中指示D2D子帧的序号的示意图；
图9为本发明资源分配方法的第六实施例的流程示意图。
本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
图2为本发明实施例资源分配方法的流程图，如图2所示，至少包括：
步骤200：控制节点获取UE的业务发送状况信息。
本步骤中的业务发送状况信息可以包括：PHR、或资源信息如T-RPT索引、子帧号、资源池索引等。
当业务发送状况信息包括PHR时，本步骤中的获取D2D UE的业务发送状况信息包括：
UE在满足以下任一条件时，向控制节点发送PHR：UE的最大发射功率变化超过预先设置的阈值；或，UE的PHR变化超过预先设置的阈值；或，UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据；或，UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据。
其中，UE的最大发射功率为UE在蜂窝业务的最大发射功率，其值为 UE总的最大发射功率减去D2D业务的发射功率。
其中，UE为通过UE选择获取资源分配的方式进行D2D通信的UE；或者，通过UE选择获取资源分配的方式进行D2D发现的UE。
UE维护的PHR包括第一PHR和第二PHR。其中，第一PHR为仅发送蜂窝网数据时可用于发送蜂窝网上行数据的PHR；第二PHR为D2D数据和蜂窝网数据同时发送时可用于发送蜂窝网上行数据的PHR。进一步的，在一定的时间内，如果UE还未发送过第一PHR或第二PHR，在满足上述任一条件时，UE才会向控制节点如基站发送第一PHR/第二PHR。其中，一定的时间可以是控制节点下发给UE的参数或者由协议预先约定的参数。
当业务发送状况信息包括资源信息时，本步骤中的获取UE的业务发送状况信息包括：
UE在满足以下任一条件时，向控制节点发送资源信息：UE的D2D资源配置/分配信息发生改变；或，D2D资源配置/分配定时器超时；或，D2D资源发送定时器超时；或，UE的D2D通信和/或发现的发送资源池发生改变；或，UE切换到一个新的小区；或，UE收到控制节点和/或对等实体发送的获取D2D资源信息请求；或，UE发生模式转换时，如UE从通过调度或者UE选择获取资源的模式转为通过UE选择获取资源分配的模式；或者UE从空闲态转为连接态时等。这里的对等实体指的是与UE一样的不具有中央控制能力的实体，如UE。
可选地，控制节点获取UE的能力信息或者获取PHR。
其中，资源信息包括以下一种或者任意几种的组合：
UE进行D2D通信和/或发现传输的T-RPT索引号；
和/或，UE进行D2D通信和/或发现传输的上行和/或下行子帧号；
和/或，UE进行D2D通信和/或发现传输的首传上行和/或下行子帧号；
和/或，UE进行D2D通信和/或发现传输的资源池索引；
和/或，UE进行D2D通信和/或发现传输的子帧对应的发送资源池中的索引或索引列表。
其中，D2D通信和/或发现传输的资源池包括：调度分配资源池以及D2D 数据资源池。
可选地，UE可以通过以下任一方式向控制节点发送D2D资源信息：UE通过媒体接入控制的控制单元(MAC CE)发送给控制节点；或，UE通过MAC子帧头发送给控制节点；或，UE通过物理层上行控制信道发送给控制节点；或，UE通过无线资源控制(RRC)信令发送给基站；或，UE通过上行数据共享信道发送给控制节点。
其中，控制节点获取UE的能力信息包括：
控制节点从高层网元如移动管理实体(MME)，获取UE的能力信息；或者，所述UE将所述UE的能力信息上报给所述控制节点。其中，能力信息包括但不限于：UE进行D2D传输时的蜂窝能力信息，以及UE不进行D2D传输时的蜂窝能力信息。其中，蜂窝能力信息包括但不限于：载波聚合能力、多天线MIMO能力、测量能力等。
其中，控制节点获取PHR包括：这里UE可以采用相关协议规定的方式向控制节点发送PHR；也可以采用本发明实施例当业务发送状况信息包括PHR时，获取PHR的方式向控制节点发送PHR，即UE在满足以下任一条件时，向控制节点发送PHR：UE的最大发射功率变化超过预先设置的阈值；或，UE的PHR变化超过预先设置的阈值；或，UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据；或，UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据。
其中，UE包括：通过UE选择获取资源分配的方式进行D2D通信的UE；或者，通过UE选择获取资源分配的方式进行D2D发现的UE；或者，公共安全D2D UE和/或非公共安全D2D UE；或者，D2D中继节点和/或非D2D中继节点。
其中，控制节点可以是基站、或执行中央控制功能的UE、或中继节点。
步骤201：控制节点根据UE的业务发送状况信息，为UE分配发射功率和/或资源。
当业务发送状况信息包括PHR时，本步骤中的为UE分配发射功率和/或资源包括：
控制节点收到UE发送的PHR后，确定UE在当前子帧的剩余功率，为UE的后续子帧分配合理的蜂窝上行发射功率，比如：当PHR为正数时，可以提升UE的蜂窝上行发射功率；当PHR为负数时，可以降低UE的蜂窝上行发射功率。具体如何进行合理的分配属于本领域技术人员容易实现的，并不用于限定本发明的保护范围，本发明强调的是，使得控制节点根据变化的PHR及时对蜂窝上行发射功率进行了调整。
当业务发送状况信息包括资源信息时，本步骤中的为UE分配发射功率和/或资源包括：
控制节点根据获得的资源信息确定UE在哪些子帧发送D2D信号，在哪些子帧不会发送D2D信号，即确定UE发送D2D数据的子帧位置；
根据UE在各个子帧所具有的蜂窝能力，分配相应合理的资源数目，编码方式等；
或者，
控制节点根据获得的资源信息确定UE在哪些子帧发送D2D数据，在哪些子帧不会发送D2D数据，即确定UE发送D2D数据的子帧位置；
控制节点根据发送的PHR及当前子帧是否为发送D2D数据的子帧，采用仅发送蜂窝网数据时蜂窝网的第一PHR或D2D数据和蜂窝网数据同时发送时蜂窝网的第二PHR调整UE在蜂窝网的上行发射功率，具体地：
如果当前发送PHR的子帧为D2D数据发送的子帧，则更新第一PHR，更新后的PHR可以用于后续所有有D2D数据发送的子帧的上行发射功率的判决，直到后续在有D2D数据发送的子帧收到新的PHR后才进行更新；如果当前发送PHR的子帧为不发送D2D数据的子帧，则更新第二PHR，更新后的PHR值可以用于后续所有没有D2D数据发送的子帧的上行发射功率的判决，直到后续在没有D2D数据发送的子帧收到新的PHR后才进行更新；
如果当前子帧是有D2D数据发送的子帧，控制节点根据第一PHR来调整UE在蜂窝网的上行发射功率；如果当前子帧是没有D2D数据发送的子帧，控制节点根据第二PHR来调整UE在蜂窝网的上行发射功率。
可选地，
当控制节点为源控制节点时，步骤201具体包括：源控制节点向目标控制节点发送UE的资源信息；目标控制节点根据UE的资源信息，及UE的能力信息或PHR，为UE分配发射功率和/或资源。
其中，源控制节点向目标中央控制节点发送UE的资源信息包括：
源控制节点通过X2或S1切换相关消息，如X2切换请求(X2HO request)消息、或S1切换请求(S1HO request)消息、或切换请求(HO Required)消息等，携带UE的资源信息进行发送。
本发明实施例方法完善了D2D UE的D2D业务和蜂窝业务的功率和资源分配方案，使得控制节点根据变化的PHR或资源信息及时对蜂窝上行发射功率进行了调整，确保了D2D业务和蜂窝业务传输的实现。
图3为本发明实施例资源分配系统的组成结构示意图，如图3所示，至少包括控制节点31和UE 32；其中，
控制节点31至少包括：获取模块311、处理模块312，其中，
获取模块311，设置成：获取UE的业务发送状况信息。其中业务发送状况信息可以包括：PHR、或资源信息如T-RPT索引、子帧号、资源池索引等；
当UE的业务发送状况信息为资源信息时，获取模块还设置成：获取UE的能力信息或者PHR。
其中，能力信息包括但不限于：UE进行D2D传输时的蜂窝能力信息，以及UE不进行D2D传输时的蜂窝能力信息。其中，蜂窝能力信息包括但不限于：载波聚合能力、多天线MIMO能力、测量能力等。
处理模块312，设置成：根据UE的业务发送状况信息，为UE分配发射功率和/或资源。具体设置成：
当业务发送状况信息包括PHR时，收到UE发送的PHR，确定UE在当前子帧的剩余功率，为UE分配合理的蜂窝上行发射功率；或者，
当业务发送状况信息包括资源信息时，根据获得的资源信息确定UE发送D2D数据的子帧位置；根据UE在各个子帧所具有的蜂窝能力，分配相应合理的资源数目，编码方式等；或者，
当业务发送状况信息包括资源信息时，根据获得的资源信息确定UE发 送D2D数据的子帧位置；根据发送的PHR及当前子帧是否为发送D2D数据的子帧，采用仅发送蜂窝网数据时蜂窝网的第一PHR或D2D数据和蜂窝网数据同时发送时蜂窝网的第二PHR调整UE在蜂窝网的上行发射功率。
控制节点还包括转发模块313，设置成：在自身所属控制节点为源控制节点时，向目标控制节点发送UE的资源信息。
控制节点可以是基站、或执行中央控制功能的UE、或中继节点。
UE 32至少包括发送模块321，设置成：向控制节点发送UE的业务发送状况信息。
具体设置成：
在UE的最大发射功率变化超过预先设置的阈值时；或，在UE的PHR变化超过预先设置的阈值时；或，在UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据时；或，在UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据时，向控制节点发送业务发送状况信息，此时业务发送状况信息为PHR。
或，
在UE的D2D资源配置/分配信息发生改变时；或，在D2D资源配置/分配定时器超时时；或，D2D资源发送定时器超时时；或，在UE的D2D通信和/或发现的发送资源池发生改变时；或，在UE切换到一个新的小区时；或在UE收到控制节点和/或对等实体发送的获取D2D资源信息请求时；或，在UE发生模式转换时，向控制节点发送业务发送状况信息，此时业务发送状况信息为资源信息。
其中，资源信息包括以下一种或者任意几种的组合：
UE进行D2D通信和/或发现传输的T-RPT索引号；
和/或，UE进行D2D通信和/或发现传输的上行和/或下行子帧号；
和/或，UE进行D2D通信和/或发现传输的首传上行和/或下行子帧号；
和/或，UE进行D2D通信和/或发现传输的资源池索引；
和/或，UE进行D2D通信和/或发现传输的子帧对应的发送资源池中的索 引或索引列表。
本发明实施例UE包括通过UE选择获取资源分配的方式进行D2D通信的UE；或者，通过UE选择获取资源分配的方式进行D2D发现的UE；或者，公共安全D2D UE和/或非公共安全D2D UE；或者，D2D中继节点和/或非D2D中继节点。
图4为本发明资源分配方法的第一实施例的流程示意图，如图4所示，第一实施例中，假设控制节点为基站，UE的业务发送状况信息为T-RPT索引；包括以下步骤：
步骤400：UE接收基站下发的发送资源池信息。其中，发送资源池可以根据已有协议确定，并不用于限定本发明的保护范围，这里不再赘述。
步骤401：UE选择用于发送D2D数据的子帧位置，以确定T-RPT索引。
步骤402：在满足以下任一条件时，UE将确定的T-RPT索引发送给基站：UE的D2D资源配置/分配信息发生改变时；或，D2D资源配置/分配定时器超时时；或，D2D资源发送定时器超时时；或，UE的D2D通信和/或发现的发送资源池发生改变时；或，UE切换到一个新的小区时；或，收到中央控制节点和/或对等实体发送的获取D2D资源信息请求时；或，UE发生模式转换时，如UE从通过调度或者非竞争方式获取资源的模式转为通过UE选择获取资源分配的模式；或者UE从空闲态转为连接态时。
UE将确定的T-RPT索引发送给基站的方式可以包括以下任一种：UE通过MAC CE进行发送给基站；或，UE通过MAC子头进行发送给基站；或，UE通过物理层上行控制信道进行发送给基站；或，UE通过RRC消息进行发送给基站。
步骤403：基站接收到UE发送的T-RPT索引后，通过查表确定UE发送D2D数据的子帧位置。这里，表是指的协议约定的映射表格，在表中，每一个索引对应一套子帧位置。
步骤404：基站获取UE的能力信息，如基站从高层网元(例如MME)获取UE的能力信息；或者，基站根据UE发送获取UE的能力信息。
其中，能力信息包括UE进行D2D传输时的蜂窝能力信息，以及UE不 进行D2D传输时的蜂窝能力信息。
步骤405：基站确定UE发送D2D数据的子帧位置后，判定UE在各个子帧所具有的蜂窝数据发送/接收能力，根据各个子帧时刻不同的能力分配相应合理的资源数目，编码方式等。具体如何分配属于本领域技术人员的公知技术，并不用于限定本发明的保护范围，这里不再赘述。
其中，蜂窝能力包括：载波聚合能力，多天线MIMO能力，以及测量能力等。
第一实施例中，如果步骤401～步骤402为：UE选择用于发送D2D数据的子帧位置，确定UE进行D2D发现传输的资源池索引，并将确定的资源池索引发送给基站；那么，步骤403为：基站接收到UE发送的资源池索引后，确定UE选择的发送资源池，以确定出UE可能发送D2D通信数据的子帧位置。进而再根据获得的UE的能力信息为UE分配合适的资源数目，编码方式等。
图5为本发明资源分配方法的第二实施例的流程示意图，如图5所示，第二实施例中，假设控制节点为基站，UE的业务发送状况信息为T-RPT索引；包括以下步骤：
步骤500：UE接收基站下发的发送资源池信息。
步骤501：UE选择用于发送D2D数据的子帧位置，确定T-RPT索引。
步骤502：在满足以下任一条件时，UE将确定的T-RPT索引发送给基站：UE的D2D资源配置/分配信息发生改变时；或，D2D资源配置/分配定时器超时时；或，D2D资源发送定时器超时时；或，UE的D2D通信和/或发现的发送资源池发生改变时；或，UE切换到一个新的小区时；或，收到中央控制节点和/或对等实体发送的获取D2D资源信息请求时；或，UE发生模式转换时，如UE从通过调度或者非竞争方式获取资源的模式转为通过UE选择获取资源分配的模式；或者UE从空闲态转为连接态时等。
UE将确定的T-RPT索引发送给基站的方式可以包括以下任一种：UE通过MAC CE进行发送给基站；或，UE通过MAC子头进行发送给基站；或，UE通过物理层上行控制信道进行发送给基站；或，UE通过RRC消息进行发 送给基站。
步骤503：UE计算获得当前子帧的上行PHR，并发送给基站。其中如何计算属于本领域技术人员的公知技术，并不用于限定本发明的保护范围，这里不再赘述。
其中，步骤502和步骤503没有严格的先后顺序。
步骤504：基站接收到UE发送的T-RPT索引后，通过查表确定UE发送D2D数据的子帧位置。
步骤505：基站接收UE发送的PHR，根据T-RPT索引可知当前子帧是否有D2D数据发送，如果当前发送PHR的子帧为D2D数据发送的子帧，则更新第一PHR，更新后的PHR可以用于后续所有有D2D数据发送的子帧的上行发射功率的判决，直到后续在有D2D数据发送的子帧收到新的PHR后才进行更新；如果当前发送PHR的子帧不是D2D数据发送的子帧，则更新第二PHR，更新后的PHR可以用于后续所有没有D2D数据发送的子帧的上行发射功率的判决，直到后续在没有D2D通信数据发送的子帧收到新的PHR后才进行更新。
步骤505：基站根据UE发送的T-RPT索引可知当前子帧是否有D2D数据发送，如果当前子帧是有D2D通信数据发送的子帧，则基站根据第一PHR来调整UE在蜂窝网的上行发射功率；如果当前子帧是没有D2D数据发送的子帧，则基站根据第二PHR来调整UE在蜂窝网的上行发射功率。
另外，对于D2D发现使能的UE，当UE需要发送D2D发现数据，并确定发送D2D发现数据的资源信息后，UE将资源信息发给控制节点，此时的资源信息包括以下一种或者多种的任意组合：
UE进行D2D发现传输的上行子帧号；
和/或，UE进行D2D发现传输的首传上行子帧号；
和/或，UE进行D2D发现传输的资源池索引；
和/或，UE进行D2D通信和/或发现传输的上行子帧对应的发送资源池指示的D2D子帧的序号。
图6为本发明资源分配方法的第三实施例的流程示意图，如图6所示， 第三实施例中，假设控制节点为执行中央控制功能的UE即UE2，UE的业务发送状况信息为D2D资源信息；包括以下步骤：
步骤600：第一用户设备(UE1)向第二用户设备(UE2)发送D2D资源信息。其中，资源信息包括：
UE1进行D2D通信和/或发现传输的T-RPT索引号；
和/或，UE1进行D2D通信和/或发现传输的上行子帧号；
和/或，UE1进行D2D通信和/或发现传输的首传上行子帧号；
和/或，UE1进行D2D通信和/或发现传输的资源池索引；
和/或，UE1进行D2D通信和/或发现传输的上行子帧对应的发送资源池的索引。
步骤601：UE1向UE2发送PHR。
步骤602：UE2接收到来自UE1发送的资源池信息后，确定UE1后续发送D2D数据的子帧，从而确定监听D2D数据的子帧位置。
步骤603：UE2接收到PHR后，确定UE1的功率调整值和/或调制编码方式，并将确定出的功率调整值和/或调制编码方式发送给UE1。比如：当PHR为正数时，可以提升UE的蜂窝上行发射功率；当PHR为负数时，可以降低UE的蜂窝上行发射功率。具体如何进行合理的分配属于本领域技术人员容易实现的，并不用于限定本发明的保护范围，本发明强调的是，使得控制节点根据变化的PHR及时对蜂窝上行发射功率进行了调整。
需要说明的是，本实施例中，步骤600和步骤602表明了通过发送资源来进行调整，步骤601和步骤603表明了通过发送PHR来进行调整，这两种方法可以按照本实施例的顺序执行，也可以分别单独执行即仅采用通过发送资源来进行调整的方式，或者仅采用通过发送PHR来进行调整的方式。
图7为本发明资源分配方法的第四实施例的流程示意图，如图7所示，第四实施例中，假设控制节点为基站，且通过基站发起请求来获得资源信息，包括以下步骤：
步骤700：基站通过广播消息下发D2D传输资源池。其中，传输资源池包括资源池传输周期和周期内的图样(pattern)。
步骤701：UE接收到传输资源池后，选择并确定发送D2D数据的子帧。
步骤702：基站通过专有信令向UE发送获取D2D资源信息请求信息。
步骤703：UE接收到基站下发的获取D2D资源信息请求信息后，向基站反馈D2D资源信息。
其中，如果UE为非公共安全D2D UE或者D2D发现使能的UE，那么，本步骤中的反馈的D2D资源信息包括：UE将进行D2D通信和/或发现传输的上行子帧对应的发送资源池指示的D2D子帧的序号反馈给基站。图8为本发明资源分配方法的第五实施例中指示D2D子帧的序号的示意图，其中斜线阴影表示D2D资源子帧，斜方格阴影表示UE D2D数据子帧，如图8所示，假设传输资源池的周期为40ms，图样pattern指示在各个周期内的第{1,2,9,10,17,18,25,26,33,34}个子帧为D2D传输子帧位置，如果UE选择在周期内的第9个子帧开始发送D2D数据，那么，UE将第9个子帧对应的pattern序号(即3)作为D2D资源信息发送给基站。
如果UE为公共安全D2D UE或者D2D通信使能的UE，那么，本步骤中的反馈的D2D资源信息包括：UE将进行D2D传输的T-RPT索引号反馈给基站。
步骤704：基站接收UE发送的D2D资源信息，确认UE发送D2D信号的子帧位置。具体地，
如果UE为非公共安全D2D UE，基站可以根据UE发送的pattern序号确定出UE首传D2D数据的子帧位置，同时根据协议约定的准则确定重传D2D数据的子帧位置，比如：在如图8所示的D2D传输资源池中，基站可判断出UE在第9,10,17,18个子帧发送D2D数据。
如果UE为公共安全D2D UE，基站则根据T-RPT索引号查找出D2D子帧位图(bitmap)列表，确定UE发送D2D信号的子帧位置。其中，T-RPT索引号与D2D子帧bitmap列表的映射关系由协议约定。
步骤705：基站获取UE的蜂窝的无线空口能力，比如：基站从高层网元(例如MME)获取UE的能力信息；或者，基站根据UE发送获取UE的能力信息。
步骤706：基站确定UE在各个子帧的不同的蜂窝能力，根据各个子帧时刻不同的能力分配相应合理的资源。蜂窝能力包括但不限于：载波聚合能力，多天线MIMO能力，以及测量能力等。
图9为本发明资源分配方法的第六实施例的流程示意图，如图9所示，第六实施例中，假设控制节点为基站，UE从源基站切换至目标基站，包括以下步骤：
步骤900：源eNB1获得UE发送的D2D资源信息后，将UE的D2D资源信息发送给目标eNB2。
步骤901：目标eNB2根据获得的D2D资源信息，知道新接入UE在哪些子帧发送D2D信号在哪些子帧不发送D2D信号，从而为UE分配合适的蜂窝通信资源。
其中，D2D资源信息包括以下一种或者多种的任意组合：
UE进行D2D通信和/或发现传输的T-RPT索引号；
和/或，UE进行D2D通信和/或发现传输的上行子帧号；
和/或，UE进行D2D通信和/或发现传输的首传上行子帧号；
和/或，UE进行D2D通信和/或发现传输的资源池索引；
和/或，UE进行D2D通信和/或发现传输的上行子帧对应的发送资源池指示的D2D子帧的序号。
可选地，D2D通信和/或发现资源池包括调度分配资源池以及D2D数据资源池。
以上所述，仅为本发明的较佳实例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
本发明技术方案完善了D2D UE的D2D业务和蜂窝业务的功率和资源分配方案，使得控制节点根据变化的PHR或资源信息及时对蜂窝上行发射功率进行了调整，确保了D2D业务和蜂窝业务传输的实现。因此本发明具有很强的工业实用性。

Claims (31)

  1. 一种资源分配方法，包括：
    控制节点获取设备到设备(D2D)用户设备UE的业务发送状况信息；
    控制节点根据所述UE的业务发送状况信息，为所述UE分配发射功率和/或资源；
    其中，所述业务发送状况信息包括：功率余量PHR、或资源信息。
  2. 根据权利要求1所述的资源分配方法，其中，当所述业务发送状况信息包括PHR时，所述获取D2D UE的业务发送状况信息的步骤包括：
    所述UE在满足以下任一条件时，向所述控制节点发送所述PHR：
    所述UE的最大发射功率变化超过预先设置的阈值，其中，UE的最大发射功率为所述UE在蜂窝业务的最大发射功率，其值为所述UE总的最大发射功率减去D2D业务的发射功率；或者，
    所述UE的PHR变化超过预先设置的阈值；或者，
    所述UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据；或者，
    所述UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据。
  3. 根据权利要求2所述的资源分配方法，其中，所述为UE分配发射功率和/或资源的步骤包括：
    所述控制节点收到所述UE发送的PHR后，确定所述UE在当前子帧的剩余功率，为所述UE后续子帧分配蜂窝上行发射功率。
  4. 根据权利要求2或3所述的资源分配方法，其中，所述UE包括：
    通过UE选择获取资源分配的方式进行D2D通信的UE；或者，
    通过UE选择获取资源分配的方式进行D2D发现的UE。
  5. 根据权利要求1所述的资源分配方法，其中，当所述业务发送状况信息包括资源信息时，所述获取UE的业务发送状况信息的步骤包括：
    所述UE在满足以下任一条件时，向所述控制节点发送所述资源信息：
    所述UE的D2D资源配置/分配信息发生改变；或，
    D2D资源配置/分配定时器超时；或，
    D2D资源发送定时器超时；或，
    所述UE的D2D通信和/或发现的发送资源池发生改变；或，所述UE切换到一个新的小区；或，
    所述UE收到控制节点和/或对等实体发送的获取D2D资源信息请求；或，
    所述UE发生模式转换时，其中，所述UE发生模式转换的步骤包括：所述UE从调度资源分配模式转换为UE选择资源分配的模式，或者UE从空闲态转为连接态时。
  6. 根据权利要求5所述的资源分配方法，该方法还包括：所述控制节点获取所述UE的能力信息或者获取所述PHR。
  7. 根据权利要求5或6所述的资源分配方法，其中，所述资源信息包括以下信息中的一种或者任意几种的组合：
    所述UE进行D2D通信和/或发现传输的T-RPT索引号；
    所述UE进行D2D通信和/或发现传输的上行和/或下行子帧号；
    所述UE进行D2D通信和/或发现传输的首传上行和/或下行子帧号；
    所述UE进行D2D通信和/或发现传输的资源池索引；其中，D2D通信和/或发现传输的资源池包括：调度分配资源池以及D2D数据资源池；
    所述UE进行D2D通信和/或发现传输的子帧对应的发送资源池中的索引或索引列表。
  8. 根据权利要求7所述的资源分配方法，其中，所述UE设置成按照如下方式向所述控制节点发送资源信息：
    通过以下任一方式向控制节点发送D2D资源信息：
    所述UE通过媒体接入控制的控制单元MAC CE发送给控制节点；
    所述UE通过MAC子帧头发送给控制节点；
    所述UE通过物理层上行控制信道发送给控制节点；
    所述UE通过无线资源控制RRC信令发送给基站；
    所述UE通过上行数据共享信道发送给控制节点。
  9. 根据权利要求6所述的资源分配方法，其中，所述控制节点获取所述UE的能力信息的步骤包括：
    所述控制节点从高层网元，获取所述UE的能力信息；或者，
    所述UE将所述UE的能力信息上报给所述控制节点。
  10. 根据权利要求6或9所述的资源分配方法，其中，所述UE的能力信息包括：所述UE进行D2D传输时的蜂窝能力信息，以及所述UE不进行D2D传输时的蜂窝能力信息。
  11. 根据权利要求10所述的资源分配方法，其中，所述蜂窝能力信息至少包括：载波聚合能力、多天线MIMO能力和/或测量能力。
  12. 根据权利要求6所述的资源分配方法，其中，所述控制节点获取PHR的步骤包括：
    所述UE在满足以下任一条件时，向控制节点发送所述PHR：所述UE的最大发射功率变化超过预先设置的阈值；或，
    所述UE的PHR变化超过预先设置的阈值；或，
    所述UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据；或，
    所述UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据。
  13. 根据权利要求6所述的资源分配方法，其中，所述为UE分配发射功率和/或资源的步骤包括：
    所述控制节点根据获得的资源信息确定所述UE发送D2D数据的子帧位置；
    所述控制节点根据所述获得的UE的能力信息确定的UE在各个子帧所具有的蜂窝能力，分配相应的资源数目和编码方式。
  14. 根据权利要求5所述的资源分配方法，其中，所述为UE分配发射功率和/或资源的步骤包括：
    所述控制节点根据获得的资源信息确定所述UE发送D2D数据的子帧位置；
    所述控制节点根据发送的PHR及当前子帧是否为发送D2D数据的子帧，采用仅发送蜂窝网数据时蜂窝网的第一PHR或D2D数据和蜂窝网数据同时发送时蜂窝网的第二PHR调整所述UE在蜂窝网的上行发射功率。
  15. 根据权利要求14所述的资源分配方法，其中，所述控制节点根据发送的PHR及当前子帧是否为发送D2D数据的子帧，采用仅发送蜂窝网数据时蜂窝网的第一PHR或D2D数据和蜂窝网数据同时发送时蜂窝网的第二PHR调整所述UE在蜂窝网的上行发射功率的步骤包括：
    如果所述当前子帧是有D2D数据发送的子帧，所述控制节点根据第一PHR来调整UE在蜂窝网的上行发射功率；
    如果所述当前子帧是没有D2D数据发送的子帧，所述控制节点根据第二PHR来调整UE在蜂窝网的上行发射功率；
    其中，第一PHR为仅发送蜂窝网数据时可用于发送蜂窝网上行数据的PHR；第二PHR为D2D数据和蜂窝网数据同时发送时可用于发送蜂窝网上行数据的PHR。
  16. 根据权利要求15所述的资源分配方法，其中，
    如果所述当前发送PHR的子帧为D2D数据发送的子帧，该方法还包括：更新所述第一PHR；
    如果所述当前发送PHR的子帧为不发送D2D数据的子帧，该方法还包括：更新所述第二PHR。
  17. 根据权利要求6所述的资源分配方法，其中，所述控制节点为源控制节点时，所述控制节点根据所述UE的业务发送状况信息，为所述UE分配发射功率和/或资源的步骤包括：
    源控制节点向目标控制节点发送所述UE的资源信息；
    所述目标控制节点根据所述UE的资源信息，及所述UE的能力信息或PHR，为所述UE分配发射功率和/或资源。
  18. 根据权利要求17所述的资源分配方法，其中，所述源控制节点向目 标中控制节点发送所述UE的资源信息的步骤包括：
    所述源控制节点通过X2或S1切换相关消息携带所述UE的资源信息进行发送。
  19. 根据权利要求5或6所述的资源分配方法，其中，所述UE包括：
    通过UE选择获取资源分配的方式进行D2D通信的UE；或者，
    通过UE选择获取资源分配的方式进行D2D发现的UE；或者，
    公共安全D2D UE和/或非公共安全D2D UE；或者，
    D2D中继节点和/或非D2D中继节点。
  20. 根据权利要求1、2、5或6所述的资源分配方法，其中，所述控制节点是基站、或执行中央控制功能的UE、或中继节点。
  21. 一种控制节点，包括获取模块和处理模块，其中，
    所述获取模块设置成：获取UE的业务发送状况信息，其中，业务发送状况信息包括：PHR、或资源信息；
    所述处理模块设置成：根据所述UE的业务发送状况信息，为所述UE分配发射功率和/或资源。
  22. 根据权利要求21所述的控制节点，其中，当所述业务发送状况信息包括PHR时，所述处理模块设置成按照如下方式为UE分配发射功率和/或资源：
    收到所述UE发送的PHR，确定所述UE在当前子帧的剩余功率，为所述UE分配蜂窝上行发射功率。
  23. 根据权利要求21所述的控制节点，其中，当所述UE的业务发送状况信息包括资源信息时，所述获取模块还设置成：获取所述UE的能力信息或者PHR；
    其中，能力信息包括：UE进行D2D传输时的蜂窝能力信息，以及UE不进行D2D传输时的蜂窝能力信息；其中，所述蜂窝能力信息包括：载波聚合能力、多天线MIMO能力、测量能力。
  24. 根据权利要求23所述的控制节点，其中，所述处理模块设置成按照 如下方式为UE分配发射功率和/或资源：
    根据获得的资源信息确定所述UE发送D2D数据的子帧位置；根据所述UE在多个子帧所具有的蜂窝能力，分配相应的资源数目和编码方式；或者
    根据获得的资源信息确定所述UE发送D2D数据的子帧位置；根据发送的PHR及当前子帧是否为发送D2D数据的子帧，采用仅发送蜂窝网数据时蜂窝网的第一PHR或D2D数据和蜂窝网数据同时发送时蜂窝网的第二PHR调整UE在蜂窝网的上行发射功率。
  25. 根据权利要求23所述的控制节点，其中，所述控制节点还包括转发模块，该转发模块设置成：在自身所属控制节点为源控制节点时，向目标控制节点发送所述UE的资源信息。
  26. 根据权利要求21～25中任一项所述的控制节点，其中，所述控制节点是基站、或执行中央控制功能的UE、或中继节点。
  27. 一种用户设备UE，包括发送模块，该发送模块设置成：向控制节点发送UE的业务发送状况信息，其中，业务发送状况信息包括：PHR、和/或资源信息。
  28. 根据权利要求27所述的UE，其中，当所述业务发送状况信息为PHR时，所述发送模块设置成按照如下方式向所述控制节点发送PHR：
    在所述UE的最大发射功率变化超过预先设置的阈值时；或者，
    在所述UE的PHR变化超过预先设置的阈值时；或者，
    在所述UE在当前子帧发送D2D数据，但在上一个子帧不发送D2D数据时；或者，
    所述在UE在当前子帧不发送D2D数据，但在上一个子帧发送D2D数据时，
    向所述控制节点发送PHR。
  29. 根据权利要求27所述的UE，其中，当所述业务发送状况信息为资源信息时，所述发送模块设置成按照如下方式向所述控制节点发送资源信息：
    在所述UE的D2D资源配置/分配信息发生改变时；或，
    在D2D资源配置/分配定时器超时时；或，
    在D2D资源发送定时器超时时；或，
    在所述UE的D2D通信和/或发现的发送资源池发生改变时；或，
    在所述UE切换到一个新的小区时；或，
    在所述UE收到控制节点和/或对等实体发送的获取D2D资源信息请求时；或，
    在所述UE发生模式转换时，
    向所述控制节点发送资源信息。
  30. 根据权利要求29所述的UE，其中，所述资源信息包括以下信息中的一种或者任意几种的组合：
    所述UE进行D2D通信和/或发现传输的T-RPT索引号；
    所述UE进行D2D通信和/或发现传输的上行和/或下行子帧号；
    所述UE进行D2D通信和/或发现传输的首传上行和/或下行子帧号；
    所述UE进行D2D通信和/或发现传输的资源池索引；
    所述UE进行D2D通信和/或发现传输的子帧对应的发送资源池中的索引或索引列表。
  31. 根据权利要求27所述的UE，其中，所述UE包括：
    通过UE选择获取资源分配的方式进行D2D通信的UE；或者，
    通过UE选择获取资源分配的方式进行D2D发现的UE；或者，
    公共安全D2D UE和/或非公共安全D2D UE；或者，
    D2D中继节点和/或非D2D中继节点。
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WO2021232283A1 (en) * 2020-05-20 2021-11-25 Qualcomm Incorporated Relay ue power headroom reporting for side link
CN115474265A (zh) * 2022-08-29 2022-12-13 中国信息通信研究院 一种数据传输的调度方法和设备
CN115474265B (zh) * 2022-08-29 2024-06-04 中国信息通信研究院 一种数据传输的调度方法和设备

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