WO2018058684A1 - 一种资源请求方法、设备及系统 - Google Patents
一种资源请求方法、设备及系统 Download PDFInfo
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- WO2018058684A1 WO2018058684A1 PCT/CN2016/101407 CN2016101407W WO2018058684A1 WO 2018058684 A1 WO2018058684 A1 WO 2018058684A1 CN 2016101407 W CN2016101407 W CN 2016101407W WO 2018058684 A1 WO2018058684 A1 WO 2018058684A1
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- bsr
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- 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
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
Definitions
- the present invention relates to the field of communications technologies, and in particular, to a resource request method, device, and system.
- a special device is a user equipment (English: User Equipment, UE) through another UE and network with relay function.
- UE User Equipment
- the former is called a remote user equipment (English: Remote UE)
- the latter is called a relay user equipment (English: Relay UE).
- the D2D communication between the Remote UE and the Relay UE can be communicated by using a wireless local area network (WLAN) technology or a Bluetooth technology communication method, or a long-term evolution based side link (English: Long Term Evolution Sidelink, LTE Sidelink) technology communicates with each other.
- the resource allocation on the Sidelink includes two modes: mode 1: resource allocation of the base station scheduling. That is, when the user equipment that performs the D2D communication needs to transmit data on the Sidelink, the user equipment needs to first send the resource request information to the base station, after which the base station allocates a dedicated resource for the user equipment to perform data transmission on the sidelink; Choose resources on your own.
- the user equipment can randomly select resources in the resource pool configured by the base station to perform data transmission on the sidelink.
- the resource pool configured by the base station may be configured by using system information, or may be configured by using dedicated signaling after receiving a request for the user equipment to perform Sidelink communication.
- the Remote UE and the Relay UE use the resource allocation manner scheduled by the base station to perform D2D communication with the Relay UE, in order to send a resource request to the base station.
- the Remote UE needs to maintain uplink synchronization with the base station, that is, the Remote UE needs to send an uplink signal to the base station, or the Remote UE does not need to maintain uplink synchronization between the base station, but when the resource request information needs to be sent, the Remote UE passes The random access procedure requests to obtain uplink synchronization and simultaneously requests uplink grant. Either way, it will consume more power from the Remote UE.
- the present application provides a resource request method, device, and system, to solve the problem that the UE consumes more power caused by the UE transmitting resource request information to the base station when the resource allocation by the base station is used.
- a resource request method may include: the Remote UE triggering a BSR for providing the base station with the amount of data to be transmitted available in the cache of the Remote UE, and transmitting the BSR to the relay user equipment Relay UE.
- the Remote UE can report the resource request information to the base station through the Relay UE, so as to avoid the problem that the remote UE directly reports the power request information of the remote UE to the base station, and the Remote UE reports the other power to the base station through the Relay UE.
- the method of requesting information refer to the resource request method provided by the embodiment of the present invention.
- the Remote UE may send any BSR to the Relay UE by using any one of the following manners:
- Manner 1 The remote UE acquires a control signaling resource pool and a data resource pool configured by the base station for the Remote UE, and the control signaling resource pool and the data resource are used for the Remote UE transmission resource request information, and the first resource is selected from the control signaling resource pool.
- the first resource is used to send a downlink control message SCI to the relay UE, and the remote UE selects the second resource from the data resource pool, and uses the second resource to send the media access control protocol data unit MAC PDU including the BSR to the relay UE.
- the SCI includes indication information for indicating location information of the second resource, where the MAC PDU includes: a media access control header MAC Header, and a first media access control control.
- the MAC header includes a first media access control sub-header MAC Subheader
- the first MAC CE includes a BSR
- the first MAC Subheader includes a logical channel identifier LCID
- the LCID is used to indicate that the first MAC CE is a BSR MAC CE
- BSR MAC CE format for indicating location information of the second resource
- the Remote UE acquires a control signaling resource pool configured by the base station for the Remote UE, and the control signaling resource pool is used for the Remote UE transmission resource request information, selects the third resource from the control signaling resource pool, and uses the third resource to the Relay.
- the UE sends the SCI including the BSR, and the SCI may include: one of the index of the Remote UE, the identifier of the destination layer 2, the amount of data to be transmitted in the buffer corresponding to each logical channel group of the Remote UE, and the format of the BSR.
- Kind of information
- the index of the Remote UE is the unique identifier of the Remote UE under the Relay UE, and the destination end layer 2 is identified as the destination layer 2 address of the Relay UE.
- the format of the BSR is used to indicate that the BSR reports the Long BSR or the short buffer status for the long buffer status. Report Short BSR, or truncated cache status report Truncated BSR.
- Manner 3 The Remote UE receives the side-link grant SL grant allocated by the base station, and sends the MAC PDU including the BSR to the Relay UE by using the resource indicated by the SL grant.
- the MAC PDU may include: a MAC Header, a second MAC CE, and a first media access control service data unit; the MAC Header includes: a first MAC Subheader, and the second MAC CE is a MAC CE including a BSR; The second MAC Header includes an LCID, and the LCID included in the second MAC Header is used to indicate that the second MAC CE is in the format of the BSR MAC CE and the BSR MAC CE.
- the BSR MAC CE is an uplink BSR MAC CE or a side-by-side BSR MAC CE; if the BSR MAC CE is an uplink BSR MAC CE, the format of the BSR MAC CE includes: Long BSR MAC CE, Short BSR MAC CE, and Truncated BSR MAC CE. If the BSR MAC CE is a side-by-side BSR MAC CE, the format of the BSR MAC CE includes the side-link buffer status report Sidelink BSR MAC CE, truncation. The sidestream buffer status reports Truncated Sidelink BSR MAC CE two formats.
- the Remote UE can send the BSR to the Relay UE in the above manner.
- the receiving, by the remote UE, the SL grant allocated by the base station may include:
- the Remote UE triggers the scheduling request SR and sends an SR to the Relay UE, and the scheduling request is used to request the allocation of the SL grant from the base station.
- the sending, by the Remote UE, the SR to the Relay UE may include:
- the remote UE acquires a control signaling resource pool for the Remote UE transmission scheduling request configured by the base station for the Remote UE, selects the fourth resource from the control signaling resource pool, and uses the fourth resource to send the SCI including the SR to the Relay UE.
- the SCI of the SR may include: one or more information of the index of the Remote UE and the identifier of the destination layer 2; the index of the Remote UE is a unique identifier of the Remote UE under the Relay UE, and the destination layer 2 is identified as The destination layer 2 address of the Relay UE.
- a resource request method is provided, and the method may include:
- the relay UE receives at least one BSR for reporting the amount of data to be transmitted available in the buffer of the Remote UE to the base station, and processes at least one BSR to generate at least one Relay BSR, and sends the at least one Relay BSR to the base station. Send at least one Relay BSR.
- the relay UE can report the resource request information reported by the received Remote UE to the base station, thereby avoiding the problem that the remote UE directly reports its own resource request information to the base station to increase the power consumption, wherein the Remote UE passes the Relay.
- the UE For the method for the UE to report other resource request information to the base station, reference may be made to the resource request method provided by the embodiment of the present invention.
- the Relay UE may process the at least one BSR to generate a Relay BSR by using the following manner (1) or mode (2), and send a Relay BSR to the base station:
- the Relay UE combines the at least one BSR to generate a relay buffer status report Relay BSR, and obtains an uplink scheduling grant UL grant allocated by the base station, and sends the relay BSR to the base station by using the resource indicated by the UL grant.
- Media Access Control Protocol Data Unit MAC PDU Media Access Control Protocol Data Unit
- the MAC PDU may include: a media access control header MAC Header, a first media access control control unit MAC CE, the MAC Header includes: a first MAC Subheader, and the first MAC CE includes a Relay BSR;
- the first MAC Subheader includes an LCID, the LCID is used to indicate that the first MAC CE is a Relay BSR MAC CE, and the Relay BSR MAC CE includes: at least one set of BSR information corresponding to at least one Remote UE; each set of BSR information includes: The index of the remote UE corresponding to the group BSR information, the format of the BSR reported by the Remote UE, the number of logical channel groups included in the BSR reported by the Remote UE, the identifier of the logical channel group included in the BSR reported by the Remote UE, and the report of the Remote UE One or more of the amount of data to be transmitted available on each logical channel in the BSR.
- the relay UE acquiring the UL grant allocated by the base station may include:
- the Relay UE triggers the scheduling request SR and sends an SR to the base station, and the SR is used to request the base station to allocate the UL grant.
- the Relay UE processes the at least one BSR to generate at least one Relay BSR, and at least one Relay BSR corresponds to the Remote UE.
- the Relay UE acquires the UL grant allocated by the base station, and uses the resource indicated by the UL grant.
- the base station transmits a MAC PDU carrying at least one Relay BSR.
- the MAC PDU carrying the Relay BSR can adopt several design schemes of the following (2.1) to (2.5):
- the MAC PDU includes: a MAC header, at least one second MAC CE, and the MAC header includes: at least one second MAC Subheader, the at least one second MAC Subheader is in one-to-one correspondence with the at least one second MAC CE, at least one The second MAC CE is a Relay BSR MAC CE, and the at least one second MAC CE is in one-to-one correspondence with the Relay BSR of the at least one Remote UE;
- Each second MAC Subheader includes an LCID, and the LCID included in each second MAC Subheader is used to indicate that the second MAC CE corresponding to the second MAC Subheader is a format of a Relay BSR MAC CE and a Relay BSR MAC CE;
- Each second MAC CE includes: an index of a Remote UE corresponding to the second MAC CE, an identifier of a logical channel group included in a BSR reported by the Remote UE, One or more kinds of data to be transmitted available on each logical channel in the BSR reported by the remote UE.
- the MAC PDU includes: a MAC Header, at least one third MAC CE, and at least one third MAC CE is in one-to-one correspondence with at least one Remote UE, and each third MAC CE includes a third MAC CE corresponding to the third MAC CE.
- the MAC header includes: at least one MAC Subheader, the at least one MAC Subheader includes a third MAC Subheader and a fourth MAC Subheader, the third MAC Subheader, the fourth MAC Subheader corresponds to the first Remote UE, and the first Remote UE is at least one Remote UE. Any of the Remote UEs;
- the third MAC Subheader includes: an Index of the first Remote UE;
- the fourth MAC Subheader includes an LCID, and the LCID included in the fourth MAC Subheader is used to indicate that the third MAC CE corresponding to the first Remote UE is the format of the Relay BSR MAC CE and the Relay BSR MAC CE.
- the MAC PDU includes: a MAC Header, at least one MAC CE, and the MAC Header includes: at least one MAC Subheader;
- At least one MAC Subheader includes a fifth MAC Subheader and a sixth MAC Subheader, the at least one MAC CE includes a fourth MAC CE and a fifth MAC CE; the third MAC Subheader, the fourth MAC Subheader corresponds to the second Remote UE, and the fourth MAC The CE, the fifth MAC CE corresponds to the second Remote UE, and the second Remote UE is any one of the at least one Remote UE;
- the fifth MAC Subheader includes an LCID, and the LCID included in the fifth MAC Subheader is used to indicate that the index of the second Remote UE is included in the fourth MAC CE.
- the sixth MAC Subheader includes an LCID, and the LCID included in the sixth MAC Subheader is used to indicate that the fifth MAC CE is the format of the Relay BSR MAC CE and the Relay BSR MAC CE;
- the fourth MAC CE includes an index of the second Remote UE
- the fifth MAC CE includes a Relay BSR of the second Remote UE.
- the MAC PDU includes: a MAC Header, at least one sixth MAC The CE, the at least one sixth MAC CE is in one-to-one correspondence with the at least one remote UE, and each sixth MAC CE includes a Relay BSR of the Remote UE corresponding to the sixth MAC CE;
- the MAC header includes: a seventh MAC Subheader, and at least one eighth MAC Subheader, and at least one eighth MAC Subheader is in one-to-one correspondence with the at least one sixth MAC CE;
- the seventh MAC Subheader includes a bitmap bitmap, the bitmap includes at least one bit, and at least one bit corresponds to at least one Remote UE, and each bit is used to indicate whether the MAC PDU includes a Remote corresponding to the bit.
- BSR MAC CE reported by the UE;
- Each of the eighth MAC Subheaders includes an LCID, and the LCID included in each of the eighth MAC Subheaders is used to indicate that the sixth MAC CE corresponding thereto is the Relay BSR MAC CE, and the format of the Relay BSR MAC CE.
- the scheme (2.5) MAC PDU includes: a MAC Header, a seventh MAC CE, and at least one eighth MAC CE, and the MAC Header includes: a ninth MAC Subheader and at least one tenth MAC Subheader;
- the at least one tenth MAC Subheader is in one-to-one correspondence with the at least one eighth MAC CE, and the at least one eighth MAC CE is in one-to-one correspondence with the at least one Remote UE, and each of the eighth MAC CEs includes a Relay BSR of the Remote UE corresponding thereto;
- the ninth MAC Subheader includes an LCID, and the LCID included in the ninth MAC Subheader is used to indicate that the seventh MAC CE includes a bitmap;
- Each of the tenth MAC Subheaders includes an LCID, and the LCID included in each tenth MAC Subheader is used to indicate that the corresponding eighth MAC CE is the format of the Relay BSR MAC CE and the Relay BSR MAC CE;
- the seventh MAC Subheader includes a bitmap, the bitmap includes at least one bit, and at least one bit corresponds to at least one Remote UE, and each bit is used to indicate whether the MAC PDU includes a Remote UE report corresponding to the bit.
- BSR MAC CE BSR MAC CE.
- the Relay BSR MAC CE The identifier of the logical channel group included in the BSR reported by the Remote UE corresponding to the Relay BSR MAC CE, and one or more information of the amount of data to be transmitted available on each logical channel in the BSR reported by the Remote UE may be included. ;
- the format of the Relay BSR MAC CE includes three formats: Long BSR MAC CE, Short BSR MAC CE, and Truncated BSR MAC CE.
- the Relay UE can send the received BSR sent by the Remote UE to the base station in the foregoing manner.
- the Relay UE after the acquiring the UL grant allocated by the base station, the Relay UE performs the logical channel processing, according to the following
- the UL BSR MAC CE, the SL BSR MAC CE, and the Relay BSR MAC CE are processed in any of the priority sequences:
- the method may further include:
- the Relay UE receives at least one sent by at least one Remote UE for requesting allocation of an SL grantSR to the base station, and transmitting at least one SR to the base station.
- the Relay UE may send at least one SR to the base station by using the following methods (a) to (c):
- the Relay UE acquires at least one physical uplink control channel resource allocated by the base station, and at least one physical uplink control channel resource corresponds to at least one Remote UE, and each uplink control channel resource is used for uplink transmission.
- the SR of the corresponding Remote UE transmits at least one SR to the base station on at least one physical uplink control channel resource allocated by the base station.
- the Relay UE performs a combination process on at least one SR, generates a relay scheduling request Relay SR, and acquires a UL grant allocated by the base station according to the UL grant. Transmitting, by the indicated resource, a MAC PDU carrying a Relay SR to the base station;
- the MAC PDU may include: a MAC Header, a MAC CE, a MAC Header including a MAC Subheader, a MAC CE including a Relay SR, a MAC Subheader including an LCID, and a MAC Subheader including an LCID for indicating that the MAC CE is a Relay SR MAC CE, and a Relay SR MAC
- the CE includes at least one bit bit, and at least one bit corresponds to the Remote UE. The value of the bit is used to indicate whether the Remote UE corresponding to the bit reports the SR.
- the MAC PDU may include a MAC Header; the MAC Header includes at least one MAC Subheader, and at least one MAC Subheader is in one-to-one correspondence with at least one Remote UE; each MAC Subheader includes an index of a corresponding Remote UE, and is used to indicate Indicates the type of the next MAC Subheader of the neighbor.
- the Relay UE can send at least one SR to the base station in the above manner.
- the relay UE receives the UL grant, and when performing the logical channel priority processing, may be any one of the following The priority order processes the UL BSR MAC CE, the SL BSR MAC CE, and the Relay SR MAC CE:
- a Remote UE includes:
- a trigger unit configured to trigger a buffer status report BSR
- a sending unit configured to send, to the relay user equipment Relay UE, the triggering unit triggered BSR, where the BSR is configured to provide, to the base station, the amount of data to be transmitted that is available in the cache of the Remote UE.
- the Remote UE provided by the third aspect can achieve the same advantageous effects as the first aspect.
- the present invention provides a Remote UE, where the Remote UE may include:
- a processor configured to trigger a buffer status report BSR
- the communication interface is configured to send the processor-triggered BSR to the relay user equipment Relay UE, where the BSR is used to provide the base station with the amount of data to be transmitted available in the cache of the Remote UE.
- the Remote UE provided by the fourth aspect can achieve the same advantageous effects as the first aspect.
- the present invention provides a non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, when included in the third aspect or the fourth aspect or any of the above
- the Remote UE is executed, the Remote UE is caused to perform the following events:
- the triggering buffer status report BSR is sent to the relay user equipment Relay UE, where the BSR is used to provide the base station with the amount of data to be transmitted available in the cache of the Remote UE.
- the Remote UE provided by the fifth aspect can achieve the same advantageous effects as the first aspect.
- a relay UE is provided, where the Relay UE includes:
- a receiving unit configured to receive at least one buffer status report BSR reported by the remote UE, and the BSR sent by each remote UE is used to provide the base station with the amount of data to be transmitted available in the cache of the Remote UE;
- a generating unit configured to perform at least one BSR received by the receiving unit Generate at least one Relay BSR
- a sending unit configured to send the at least one Relay BSR to the base station.
- the Relay UE provided by the sixth aspect can achieve the same advantageous effects as the second aspect.
- a seventh aspect provides a relay UE, where the Relay UE includes:
- a communication interface configured to receive at least one buffer status report BSR reported by the remote UE, and the BSR sent by each remote UE is used to provide the base station with the amount of data to be transmitted available in the cache of the Remote UE;
- a processor configured to process the at least one BSR to generate at least one Relay BSR
- the communication interface is further configured to send the at least one Relay BSR to the base station.
- the Relay UE provided by the seventh aspect can achieve the same advantageous effects as the second aspect.
- the present invention provides a non-transitory computer readable storage medium storing one or more programs, the one or more programs comprising instructions, when the instructions are included in the sixth aspect or the seventh aspect or any of the above
- the Relay UE is executed, the Relay UE is caused to perform the following events:
- the BSR sent by each remote UE is used to provide the base station with the amount of data to be transmitted available in the cache of the Remote UE, for the at least one The BSR performs processing to generate at least one Relay BSR, and sends the at least one Relay BSR to the base station.
- the specific implementation manner of the eighth aspect may refer to the behavior function of the relay UE in the resource request method provided by the second aspect or the possible implementation manner of the second aspect, where This is not repeated here. Therefore, the Relay UE provided by the eighth aspect can achieve the same advantageous effects as the second aspect.
- the present invention provides a resource requesting system, comprising the Remote UE, such as the sixth aspect or the seventh aspect or the eighth aspect, according to the third aspect or the fourth aspect or the fifth aspect or any of the foregoing implementation manners Aspect or the Relay UE and the base station described in any of the foregoing implementation manners.
- the system of the ninth aspect is used to implement the resource request method shown in the foregoing first aspect or the second aspect. Therefore, the same beneficial effects as the foregoing resource request system can be achieved, and details are not repeated herein.
- FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a system according to an embodiment of the present invention.
- FIG. 3 is a flowchart of a resource request method according to an embodiment of the present invention.
- FIG. 3 is a schematic diagram of a format of a MAC PDU according to an embodiment of the present disclosure
- FIG. 3b is a schematic diagram of a format of a MAC PDU according to an embodiment of the present disclosure
- 4a is a schematic diagram of a format of a BSR according to an embodiment of the present invention.
- 4b is a schematic diagram of a format of a BSR according to an embodiment of the present invention.
- 4c is a schematic diagram of a format of a BSR according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram of a format of a BSR according to an embodiment of the present disclosure.
- Figure 5a is a schematic diagram of a format of a MAC PDU according to an embodiment of the present invention.
- Figure 5b is a schematic diagram of a format of a MAC PDU according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of a format of a MAC PDU according to an embodiment of the present invention.
- Figure 6b is a schematic diagram of a format of a MAC PDU according to an embodiment of the present invention.
- FIG. 6c is a schematic diagram of a format of a MAC PDU according to an embodiment of the present disclosure.
- FIG. 6 is a schematic diagram of a format of a MAC PDU according to an embodiment of the present disclosure.
- FIG. 6e is a schematic diagram of a format of a MAC PDU according to an embodiment of the present invention.
- FIG. 7 is a flowchart of a resource request method according to an embodiment of the present invention.
- FIG. 8 is a schematic diagram of a format of a MAC PDU according to an embodiment of the present invention.
- FIG. 8b is a schematic diagram of a format of a MAC PDU according to an embodiment of the present disclosure.
- FIG. 9 is a structural diagram of a Remote UE according to an embodiment of the present invention.
- FIG. 10 is a structural diagram of a Relay UE according to an embodiment of the present disclosure.
- FIG. 11 is a structural diagram of a resource request system according to an embodiment of the present invention.
- the principle of the present invention is: when the Remote UE is connected to the network through the Relay UE, and the base station configures the resource allocation mode based on the base station scheduling when the data is transmitted on the Sidelink for the Remote UE, the resource request information initiated by the Remote UE by the Relay UE (for example, the Buffer Status Report (BSR) and the Scheduling Request (SR) are sent to the base station to prevent the remote UE from increasing the power consumption of the Remote UE caused by the Remote UE directly transmitting the resource request information to the base station. .
- BSR Buffer Status Report
- SR Scheduling Request
- FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present invention.
- the network may be applicable to the resource request method provided in this embodiment.
- the network architecture may include: a base station 10, a Relay UE 20 in coverage of the base station 10, and a plurality of Remote UEs 30 connected to the Relay UE 20; the base station 10 may be an evolved base station in LTE (English) Text: Evolutional Node B, eNB or e-NodeB), the invention is not limited.
- the Relay UE20 can be (English: User Uniqupment, UE), or can be: User Equipment (Terminal), Mobile Station (English: Mobile Station, MS), Mobile User Equipment (Mobile Terminal), and can also be worn by wearable devices.
- the smart mobile terminal or the like is not limited in the present invention, and the Relay UE 20 can communicate with the base station 10 via a radio access network (English: Radio Access Network, RAN).
- the Remote UE 30 has the characteristics of small size, small battery capacity, and low power consumption.
- it can be a wearable device, wherein the wearable device includes but is not limited to a smart watch, a smart ring, a smart wristband, smart glasses, and a smart necklace. Smart wearable devices such as smart rings, smart earrings, and smart phones.
- the Remote UE 30 can communicate with the base station 10 through the Relay UE 20, and the Remote UE 30 and the Relay UE 20 can communicate according to a wireless local area network (WLAN), Bluetooth technology, or the like, or can communicate based on the LTE Sidelink communication technology.
- WLAN wireless local area network
- Bluetooth Bluetooth technology
- FIG. 1 is only a schematic diagram. The number of devices in FIG. 1 is not limited to the technical solution provided by the present invention. In actual deployment, the number of devices different from that shown in FIG. 1 may be deployed.
- the base station 10 may include: a communication interface 1011, a processor 1012, a memory 1013, and at least one communication bus 1014 for implementing connection and mutual communication between the devices;
- the Relay UE 20 may include: communication The interface 2011, the processor 2012, the memory 2013, and the at least one communication bus 2014 are used to implement the connection and mutual communication between the devices;
- the Remote UE 30 may include: a communication interface 3011, a processor 3012, a memory 3013, and at least one communication bus 3014. Used to achieve the connection and mutual communication between these devices.
- the communication interface 1011, the communication interface 2011, and the communication interface 3011 can be implemented by an antenna, and can be used for data interaction with an external network element.
- the communication interface 1011 of the base station 10 can send and receive data packets with the Relay UE 20 or The resource request information;
- the communication interface 2011 of the Relay UE 20 can send and receive data packet or resource request information between the UE or the base station 10 or the Remote UE 30.
- the communication interface 3011 can send the resource request information (such as the BSR) of the Remote UE 30 to the communication interface 2011.
- the message interface 2011 sends the resource request information to the communication interface 1011 for processing by the base station 10.
- the processor 1012, the processor 2012, and the processor 3012 may be a central processing unit (CPU), or may be an application specific integrated circuit (ASIC), or configured to be configured.
- the processor 1012, the processor 2012, and the processor 3012 have processing management functions. Specifically, the processor 1012 can process the data or information sent by the received Relay UE 20, and the processor 2012 can send the data sent by the received Remote UE 30. Or the information is processed, and the processor 3012 may process the data or information generated by the Remote UE 30 itself or process the information or data sent by other devices.
- the memory 1013, the memory 2013, and the memory 3013 may be a volatile memory such as a random access memory (RAM) or a non-volatile memory.
- RAM random access memory
- non-volatile memory For example, read-only memory (English: Read-Only Memory, ROM), flash memory, hard disk drive (HDD) or solid state drive (SSD); or the above type of memory The combination.
- the memory 1013, the memory 2013, and the memory 3013 may store data or program code that supports the resource request method according to the embodiment of the present invention, so that the processor 1012, the processor 2012, and the processor 3012 are configured according to the memory in the device where they are located.
- the stored data or program code performs the resource request method provided by the embodiment of the present invention.
- the communication bus 1014, the communication bus 2014, and the communication bus 3013 can be divided into an address bus, a data bus, a control bus, etc., and can be an industry standard architecture (Industry Standard Architecture, ISA) bus, and an external device interconnection (English: Peripheral Component) , PCI) bus or extended industry standard architecture (English: Extended Industry Standard Architecture, EISA) bus.
- Industry Standard Architecture ISA
- PCI Peripheral Component
- EISA Extended Industry Standard Architecture
- FIG. 3 is a flowchart of a resource request method according to an embodiment of the present invention. The method is performed by the device shown in FIG. 1 or FIG. 2, and the method may be applied to: when a Remote UE needs to be between a Remote UE and a Relay UE.
- the Remote UE triggers the reporting of the BSR, so that the base station allocates the resource for transmitting the data to the Remote UE according to the BSR reported by the Remote UE. .
- the BSR is used to provide the base station with the amount of data to be transmitted by the Sidelink in the cache of the Remote UE; when the Remote UE needs to be in the Remote UE and the base station
- the BSR is used to provide the base station with the amount of data to be transmitted through the uplink in the cache of the Remote UE.
- the Remote UE can report other resource request information to the base station through the Relay UE, thereby avoiding the problem that the power consumption of the remote UE directly reporting the resource request information to the base station is increased.
- the remote UE can report other resource request information to the base station by using the relay UE, reference may be made to the resource request method provided by the embodiment of the present invention.
- the method may include the following steps:
- At least one Remote UE sends at least one BSR to the Relay UE.
- the at least one Remote UE is connected to the Relay UE, and communicates with the base station by using the relay service provided by the Relay UE.
- Each Remote UE may send one or more BSRs to the Relay UE, and each Remote UE may be associated with at least one Relay.
- the UE is connected, and each BSR is used to provide the base station with the amount of data to be transmitted available in the buffer of the Remote UE that sends the BSR.
- At least one Remote UE can send to the Relay UE at the same time.
- the at least one BSR is sent, and the BSR is not required to be sent to the Relay UE.
- the Relay UE receives at least one BSR sent by the at least one Remote UE, processes the at least one BSR to generate at least one Relay BSR, and sends the at least one Relay BSR to the base station.
- the at least one relay BSR that the relay UE sends to the base station may be: at least one BSR processed by the Relay UE to the at least one remote UE, or at least one BSR sent by the Relay UE to the at least one remote UE.
- the multiple BSRs are not limited in this embodiment of the present invention. In the embodiment of the present invention, only at least one BSR sent by at least one Remote UE sent by the Relay UE to the base station is required to be expressed by at least one BSR. The meaning can be.
- two remote UEs are connected to the Relay UE: Remote UE1 and Remote UE2, and the Remote UE1 triggers the BSR1, and the Remote UE2 triggers the BSR2. Then, the Remote UE1 and the Remote UE2 can respectively send the BSR1 and the BSR2 to the Relay UE. After receiving the BSR1 and the BSR2, the UE sends the BSR1 and the BSR2 to the base station, so that the base station configures the appropriate resource for transmitting data for the Remote UE1 and the Remote UE2 according to the BSR1 and the BSR2.
- the Remote UE can report the BSR that is triggered by the UE to the base station through the Relay UE, and does not need to directly report the BSR to the base station, thereby avoiding the problem that the power consumption caused by the BSR is directly reported to the base station.
- any BSR may be sent to the Relay UE in any one of the following manners:
- the remote UE acquires a control signaling resource pool and a data resource pool configured by the base station for the Remote UE, and the control signaling resource pool and the data resource are used only for the Remote UE transmission resource request information, such as a BSR or an SR;
- the remote UE selects the first resource from the control signaling resource pool, and uses the first resource to send a downlink control message to the Relay UE (English: Sidelink Control Information, SCI);
- the remote UE selects the second resource from the data resource pool, and uses the second resource to
- the relay UE sends a Medium Access Control Protocol Data Unit (MAC PDU), and the MAC PDU includes a BSR sent by the Remote UE, and the SCI includes indication information for indicating location information of the second resource.
- MAC PDU Medium Access Control Protocol Data Unit
- the remote UE may select any resource from the control signaling resource pool as the first resource, and select any resource from the data resource pool as the second resource.
- the remote UE may send the SCI and the MAC PDU including the BSR to the Relay UE, so that the Relay UE receives the MAC PDU from the resource specified by the SCI according to the received SCI, and acquires the BSR sent by the Remote UE from the MAC PDU.
- the format of the uplink and downlink MAC PDUs is as shown in FIG. 3a
- the format of the MAC PDU of the side link is as shown in FIG. 3b, which may include: a media access control header (MAC Header), and more Media Control Control Unit (MAC), and MAC Service Data Unit (MAC SDU)
- MAC Header can contain multiple media access controls.
- a sub-header (MAC Subheader), where the MAC Subheader included in the MAC PDU may include: a side-link shared channel subheader (English: Sidelink Shared CHannel Subheader, SL-SCH Subheader), and one-to-one correspondence with multiple MAC CEs.
- each MAC Subheader may contain logic Channel identifier (English: Logical Channel ID, LCID), which is used to indicate the type of MAC CE corresponding to the MAC Subheader or which logical channel the MAC SDU is from.
- LCID Logical Channel ID
- FIG. 3a and FIG. 3b are only exemplary format diagrams of MAC PDUs, and the numbers of MAC Subheaders, MAC CEs, and MAC SDUs in FIG. 3a and FIG. 3b are merely exemplary representations, and are not described in the present invention.
- the scheme constitutes a limitation.
- MAC Subheader MAC CE, which are different from those shown in FIG. 3a and FIG. 3b, may be used according to actual needs.
- the number of MAC SDUs constructs a MAC PDU.
- the BSR sent by the Remote UE may be carried as a MAC CE in the MAC PDU shown in FIG. 3b, so that the BSR is sent to the Relay UE through the MAC PDU; wherein, in the first mode, the MAC CE may be used as the MAC CE.
- the BSR is called a BSR MAC CE.
- the MAC PDU may also include other types of MAC CEs, that is, MAC CEs in which other types of information may exist in the MAC PDU.
- a MAC Subheader corresponding to the BSR MAC CE may be selected from multiple MAC Subheaders as shown in FIG. 3b, so that the MAC Subheader is included for Indicates that the MAC CE corresponding to the MAC Subheader is the BSR MAC CE and the LCID of the format of the BSR MAC CE.
- the format of the BSR MAC CE may be determined according to the type of the BSR.
- the BSR sent by the Remote UE may be an Uplink BSR or a Sidelink BSR.
- the BSR MAC CE can be classified into three types: Long BSR MAC CE, Short BSR MAC CE, and Truncated BSR MAC CE.
- the format of the MAC CE is as shown in FIG. 4a, and may include: a buffer size in a buffer corresponding to each logical channel group, each buffer size occupies 1 byte; Short BSR MAC CE and Truncated BSR MAC CE
- the format is as shown in FIG. 4b, and may include: a logical channel group identifier and a Buffer Size corresponding to the logical channel group, where the logical channel group identifier and the Buffer Size occupy one byte.
- the LCID indicating the format of the BSR MAC CE when the BSR reported by the MAC CE is an Uplink BSR, three new LCID values need to be defined to indicate that the MAC CE corresponding to the MAC Subheader of the LCID value is The format of the BSR MAC CE and the BSR MAC CE.
- the LCID may be represented by 5 bits, that is, the LCID value ranges from 0 to 32.
- the indication BSR MAC three values of the reserved value of the LCID of the shared channel currently used for the Sidelink may be taken as the indication BSR MAC.
- LCID value of the CE format for example, as shown in Table 1 below, 11001 can be used to indicate the Truncated BSR, 11010 to indicate the Short BSR, and 11011 to indicate the Long BSR; and the indication of other values of the LCID is still the same as the existing one.
- the BSR MAC CE can be divided into two formats: Truncated Sidelink BSR and Sidelink BSR.
- two new LCID values need to be defined to indicate the MAC Subheader with the LCID value.
- the corresponding MAC CE is in the format of the BSR MAC CE and the BSR MAC CE.
- the formats of the Truncated Sidelink BSR and the Sidelink BSR are as shown in FIG. 4c and FIG. 4d, and may include: a destination index and a destination end.
- the format shown in FIG. 4c and FIG. 4d includes N sets of destination index, logical channel group identifier corresponding to the destination end, and Buffer of the logical channel group corresponding to the logical channel group identifier. Size; optional, when N is even, The format of the Truncated Sidelink BSR and the Sidelink BSR is shown in Figure 4c. When N is an odd number, the format of the Truncated Sidelink BSR and the Sidelink BSR is as shown in Figure 4d, and there will be multiple reserved (R) bits.
- two LCID values indicating the format of the BSR MAC CE may be extracted from the reserved field of the current LCID, for example, As shown in the following Table 2, the 11010 can be used to indicate the Truncated Sidelink BSR, and the 11011 is used to indicate the Sidelink BSR; and the indications of the other values of the LCID are still the same as the existing ones, and the details are not repeated here.
- the Remote UE1 can use the MAC Subheader1 as the SL-SCH Subheader and the BSR1 sent by the Remote UE1 in the MAC CE as the BSR MAC CE.
- the MAC address of the MAC Subheader 2 is filled with a value of 11011.
- the format of the MAC CE corresponding to the MAC Subheader 2 is: Long BSR.
- the MAC Subheader 3 is filled with an LCID with a value of 11111, indicating that the MAC SDU corresponding to the MAC Subheader 3 is blank padding.
- the remote UE acquires a control signaling resource pool configured by the base station for the Remote UE, and the control signaling resource pool is used only for the Remote UE transmission resource request information, such as a BSR or an SR; and the Remote UE selects the third from the control signaling resource pool.
- the resource sends the SCI including the BSR to the Relay UE by using the third resource, where the third resource is any resource in the control signaling resource pool.
- the Remote UE can carry the BSR in the SCI and send it to the Relay UE, so that the Relay UE obtains the BSR sent by the Remote UE from the SCI.
- the SCI may include one or more of the following information: Remote UE index (Index), Destination Layer 2 ID (Destination Layer 2 ID), Buffer size, BSR Type;
- the Remote UE Index is a unique identifier when the Remote UE is connected to the Relay UE, and the number of bits indicating the Remote UE Index depends on the maximum number of Remote UEs that can be connected under the Relay UE. For example, if the Relay UE can connect up to 4 Remote UEs, you can use 2bit to represent the Remote UE Index.
- the Destination Layer 2ID is the (ProSe) UE ID of the Relay UE to which the Remote UE is connected, and can be represented by 24 bits.
- Buffer size is the amount of data in the cache of the Remote UE, which can be expressed in 24 bits.
- the BSR Type is used to indicate that the BSR is a Long BSR, or a Short BSR, or a Truncated BSR. It can be represented by 2 bits or 1 bit.
- the SCI format shown in 3 may include one or more of the following information: Remote UE Index, Buffer size, BSR Type; The definitions of the Remote UE Index, the Buffer size, and the BSR Type are as described in 1), and the details are not repeated here.
- the base station needs to allocate a dedicated resource pool for receiving the SCI for each Relay UE, and only the Remote UE under the Relay UE can use the resources in the resource pool to send the SCI. .
- Manner 3 The Remote UE receives the SL grant allocated by the base station
- the Remote UE sends the MAC PDU including the BSR to the Relay UE by using the resource indicated by the SL grant.
- the remote UE may send the SCI and the MAC PDU including the BSR to the Relay UE, so that the Relay UE receives the MAC PDU from the resource specified by the SCI according to the received SCI, and acquires the BSR sent by the Remote UE from the MAC PDU.
- the format of the MAC PDU may be as described in the first method, and the details are not repeated here.
- the MAC PDU in the first mode may include the MAC SDU carrying the data, or may not include the data carried.
- the MAC SDU includes the MAC SDU carrying the data.
- the Remote UE may receive the SL grant allocated by the base station in the following manner:
- the remote UE When the remote UE has data transmission requirements, it triggers the scheduling request itself (English: Scheduling Request (SR), and sends the SR to the Relay UE, the scheduling request is used to request the allocation of the SL grant from the base station.
- SR Scheduling Request
- the Remote UE may send the SR to the Relay UE in the following manner:
- the remote UE acquires a control signaling resource pool configured by the base station for the Remote UE, and the control signaling resource pool is used only for the Remote UE transmission scheduling request;
- the remote UE selects the fourth resource from the control signaling resource pool, and uses the fourth resource to send the SCI including the SR to the relay UE, where the fourth resource may be any resource in the control signaling resource pool.
- the SCI that carries the SR may include one or more types of information in the Remote UE Index and the Destination Layer 2 ID.
- the definitions of the Remote UE Index and the Destination Layer 2 ID are as described in 1), and the details are not repeated herein.
- the relay UE may send the received at least one BSR sent by the at least one Remote UE to the base station by using any one of the following manners: (1) or (2):
- the Relay UE performs a combination process on the at least one BSR to generate a Relay BSR, where the Relay BSR includes all BSRs sent by the Remote UE.
- the Relay UE acquires a UL grant allocated by the base station
- the Relay UE sends the MAC PDU carrying the Relay BSR to the base station through the resource indicated by the UL grant allocated by the base station.
- the relay UE can obtain the UL grant allocated by the base station in the following manner: the Relay UE has a data transmission requirement, triggers an SR for requesting the base station to allocate the UL grant, and sends the SR to the base station.
- the Relay UE may combine multiple BSRs and include them in the MAC PDU and send them to the base station, so that the base station allocates an SL grant for each Remote UE according to the received BSR.
- the MAC PDU may include: a MAC Header, a plurality of MAC CEs, and a MAC SDU, and the MAC Header may include multiple MAC Subheaders;
- the Relay BSR is carried in the MAC PDU as a MAC CE. In this way, the Relay BSR is sent to the base station through the MAC PDU.
- the Relay BSR as a MAC CE can be referred to as a Relay BSR MAC CE, and in addition, multiple MAC Subheaders include one and The MAC Subheader corresponding to the Relay BSR MAC CE, the MAC Subheader includes an LCID indicating that the MAC CE corresponding to the MAC Subheader is the Relay BSR MAC CE.
- an LCID value indicating the Relay BSR MAC CE may be taken out from the reserved value of the LCID of the current uplink shared channel, for example, as shown in Table 4 below.
- the MAC address of the relay BSR is indicated by 10101; the indication of the other values of the LCID is still the same as the existing one, and the details are not repeated here.
- the format of the relay BSR MAC CE in the mode (1) may be as follows:
- the Relayed BSR MAC CE may include at least one group of BSR information corresponding to at least one remote UE, that is, one Remote UE.
- each group of BSR information may include one or more of the following information: Remote UE index, BSR type, logical channel group number (LCG Number), logical channel group identifier ( English: Logical Channel Group identification, LCG ID), and Buffer Size;
- the remote UE index in each group of BSR information is: a unique identifier when the Remote UE corresponding to the group information is connected to the Relay UE;
- the BSR type is used to notify the base station of the type of the BSR reported by the remote UE corresponding to the group information, for example, one of a Long BSR, a Short BSR, a Truncated BSR, or one of a Truncated sidelink BSR and a Sidelink BSR;
- the LCG number is used to indicate the number of LCGs that the Remote UE reports the buffer size corresponding to the group information.
- the LCG ID is used to identify a Logical channel group of the Remote UE corresponding to the group information.
- the Buffer Size is the amount of data in the buffer corresponding to the corresponding LCG ID.
- an achievable format of the Relay BSR MAC CE in the mode (1) is: the Relayed BSR MAC CE includes at least one set of BSR information corresponding to at least one Remote UE, and each set of BSR information includes the following information. :Remote UE index, BSR type, LCG Number, LCG ID, and Buffer Size.
- the Relay UE receives the BSR1 sent by the Remote UE1 and the BSR2 sent by the Remote UE2, and the BSR1 is the BSR MAC CE1 indicated by the LCID1, and the BSR2 is the BSR MAC CE2 indicated by the LCID2.
- the index of the Remote UE1 is Remote UE Index 1 (abbreviation: RUE Index 1)
- the index of Remote UE2 is Remote UE Index 2 (abbreviation: RUE Index 2)
- the Relay UE receives BSR1 and BSR2, and combines BSR1 and BSR2 as a Relay BSR in a MAC CE. That is, in the Relay BSR MAC CE, at the same time, the Relay BSR MAC CE is indicated by the LCID in one MAC subheader in the MAC PDU.
- the Relayed BSR MAC CE includes at least one set of BSR information corresponding to at least one Remote UE, and each set of BSR information includes the following Information: Remote UE index, BSR type, LCG ID, and Buffer Size;
- the Relay UE sends the BSR1 sent by the Remote UE1 and the BSR2 sent by the Remote UE2 together as a Relay BSR in a MAC CE, that is, in the Relay BSR MAC CE, to the base station.
- the Relay BSR MAC CE is indicated by the LCID in a MAC subheader in the MAC PDU.
- the method (2) the Relay UE processes the at least one BSR separately, and generates at least one Relay BSR, where at least one Relay BSR and the Remote UE are in one-to-one correspondence;
- the Relay UE acquires the UL grant allocated by the base station
- the Relay UE sends a MAC PDU carrying at least one Relay BSR to the base station according to the resource indicated by the UL grant allocated by the base station.
- the relay UE may obtain the UL grant allocated by the base station by: when the Relay BSR needs to be sent and the Relay UE does not have the UL grant, triggering an SR for requesting the allocation of the UL grant to the base station, and transmitting the SR to the base station.
- the relay UE may be sent to the base station as a MAC CE in the MAC PDU described in any one of the schemes (2.1) to (2.5):
- the MAC PDU may include: a MAC header, at least one MAC CE; the at least one MAC CE may be in one-to-one correspondence with at least one relay BSR, and each of the at least one MAC CE is configured to carry a corresponding The relay BSR, wherein the MAC CE carrying the Relay BSR may be referred to as a Relay BSR MAC CE; at the same time, the MAC Header may include at least one MAC Subheader corresponding to at least one Relay BSR MAC CE, and at least one MAC Subheader.
- the Subheader contains the LCID, and the LCID included in each MAC Subheader is used to indicate the format of the Relay BSR MAC CE and the Relay BSR MAC CE corresponding to the MAC Subheader.
- the format of the Relay BSR MAC CE may be: Long BSR MAC CE, Short BSR MAC CE, and Truncated BSR MAC CE; Long BSR MAC CE is MAC CE carrying Long BSR, Short The BSR MAC CE is a MAC CE carrying a Short BSR, and the Truncated BSR MAC CE is a MAC CE carrying a Truncated BSR.
- the Relay BSR MAC CE may include: a Remote UE Index corresponding to the Relay BSR MAC CE, an LCG ID included in the BSR reported by the Remote UE, and each logical channel group in the BSR reported by the Remote UE. One or more kinds of information in the corresponding Buffer Size of the group.
- the Remote UE1 sends a BSR1 to the Relay BSR, and the BSR1 is used to indicate to the base station the Buffer Size on the LCG ID indicated by the LCG ID1 to the LCG IDN.
- the Relay UE After receiving the BSR1 sent by the Remote UE1, the Relay UE will The BSR1 process becomes a Relay BSR, and the processed Relay BSR is placed in a MAC CE of the MAC PDU, that is, in the Relay BSR MAC CE, and is sent to the base station by using the LCID in a MAC subheader in the MAC PDU.
- the Relay BSR MAC CE includes: Remote UE Index 1, LCG ID1 to LCG IDN, and a Buffer Size corresponding to each LCG ID.
- the MAC PDU may include: a MAC header, at least one MAC CE, and at least one MAC CE is in one-to-one correspondence with at least one remote UE, and each MAC CE in at least one MAC CE may include a MAC CE.
- the relay BSR of the remote UE, wherein in this scheme, the MAC CE including the Relay BSR may be referred to as a Relay BSR MAC CE;
- the MAC Header may include : at least one MAC Subheader, the at least one MAC Subheader may include two MAC Subheaders corresponding to the first Remote UE, and the information included by the two MAC Subheaders indicates the first Remote UE and the Relay BSR including the first Remote UE.
- MAC CE the specific implementation is as follows:
- a MAC Subheader may include: an Index of the first Remote UE;
- the other MAC Subheader may include an LCID, and the LC Subheader includes an LCID for indicating that the MAC CE corresponding to the first Remote UE is the Relay BSR MAC CE and the format of the Relay BSR MAC CE.
- At least one Relay BSR corresponding to the at least one Remote UE is carried in the MAC PDU as the at least one MAC CE to the base station, and the same as the same Remote UE exists in the MAC Subheader.
- Corresponding multiple MAC Subheaders indicate the Remote UE and the MAC CE of the Relay BSR including the Remote UE by using a plurality of MAC Subheaders corresponding to the same Remote UE.
- the Relay UE receives the BSR1 sent by the Remote UE1 and the BSR2 sent by the Remote UE2, the Relay UE fills the BSR1 sent by the Remote UE1 and the BSR2 sent by the Remote UE2.
- MAC CE1, MAC CE2, and the MAC Subheader1 in the MAC PDU is filled with the index of the Remote UE1: Remote UE Index1, and the MAC Subheader2 is filled with a format indicating that the MAC CE1 is the Relay BSR MAC CE and the Relay BSR MAC CE.
- LCID1 in the MAC Subheader3, the index of the Remote UE2 is filled: Remote UE Index2, and the MAC Subheader 4 is filled with LCID2 indicating the format of the MAC CE2 as the Relay BSR MAC CE and the Relay BSR MAC CE.
- the MAC Subheader filling the Remote UE Index may include other bits, such as a Tbit and a reserved (R) bit, in addition to the Remote UE Index.
- the value of the Tbit may be used to indicate whether the next MAC Subheader adjacent to the MAC Subheader is a newly defined Subheader including the Remote UE Index, or is similar to the LCID defined in the MAC PDU on the current uplink and downlink.
- the MAC PDU may further include: a MAC SDU, and a padding.
- the MAC Header may further include a MAC Subheader corresponding to the MAC SDU and a Padding Subheader corresponding to the Padding, which is not limited in this embodiment of the present invention.
- the MAC Subheader there are currently two reserved bits in the MAC Subheader that contains the LCID.
- One of the reserved bits may be used to indicate whether the next MAC Subheader adjacent to the MAC Subheader is a newly defined Subheader containing the Remote UE Index, or is similar to the Subheader including the LCID defined in the MAC PDU on the current uplink and downlink. .
- the MAC PDU may include: a MAC Header, at least one MAC CE, and the MAC Header includes: at least one MAC Subheader;
- the at least one MAC CE may include two MAC CEs corresponding to the second Remote UE: one MAC CE may include the second Remote UE. Index, another MAC CE may include a Relay BSR corresponding to the second Remote UE.
- MAC Subheaders corresponding to the second Remote UE in the at least one MAC Subheader one The LCID including the Index for indicating the second Remote UE included in the MAC CE, and the another includes the format of the Relay BSR MAC CE and the Relay BSR MAC CE for indicating that the MAC CE is the Relay BSR corresponding to the second Remote UE. LCID.
- the index of the Remote UE and the Relay BSR of the Remote UE are carried as a MAC CE in the MAC PDU and sent to the base station, and at the same time, in the MAC Subheader There are a plurality of MAC Subheaders corresponding to the Remote UE, and the MAC Subheader including the LCID of the plurality of MAC Subheaders is used to indicate the MAC CE of the index including the Remote UE, and another MAC Subheader including the LCID in the multiple MAC Subheaders Indicates the MAC CE of the Relay BSR that contains the Remote UE.
- the Relay UE receives the BSR1 sent by the Remote UE1 and the BSR2 sent by the Remote UE2, the Relay UE will receive the BSR1 sent by the Remote UE1 and the BSR2 and the Remote UE1 sent by the Remote UE2.
- the index and the index of the Remote UE2 are respectively filled in the MAC CE1, the MAC CE2, the MAC CE3, and the MAC CE4, and the MAC Subheader1 in the MAC PDU is filled with the LCID1 indicating that the MAC CE1 is the index containing the Remote UE1, in the MAC Subheader2.
- the MAC Subheader 4 is filled with an LCID 4 indicating that the MAC CE 4 is a Relay BSR MAC CE including the BSR 2 transmitted by the Remote UE 2 and a format of the Relay BSR MAC CE.
- the MAC CE populated with the Remote UE Index may include other bits, such as a reserved (R) bit, in addition to the Remote UE Index.
- the MAC PDU may further include: a MAC SDU, and a blank padding
- the MAC Header may further include a MAC Subheader corresponding to the MAC SDU, and a Padding Subheader corresponding to the Padding, the present invention The embodiment does not limit this.
- the MAC PDU may include: a MAC Header and at least one MAC CE; at least one MAC CE is in one-to-one correspondence with at least one Remote UE, and each MAC CE in at least one MAC CE may include a Remote corresponding to the MAC CE.
- a relay BSR of the UE, where the MAC CE including the Relay BSR may be referred to as a Relay BSR MAC CE;
- the MAC Header may include: a Subheader including a bitmap, and at least one Relay BSR At least one MAC Subheader corresponding to the MAC CE one by one;
- the MAC Subheader includes a bitmap that includes at least one bit corresponding to at least one Remote UE, and each bit is used to indicate the current MAC. Whether the PDU includes the MAC SDU and/or the BSR MAC CE BSR of the Remote UE corresponding to the bit, for example, if the current MAC PDU includes the MAC SDU and/or the BSR MAC CE of the remote UE whose index value is n, then The value of the bit n in the corresponding bitmap is set to 1, otherwise, the value of the bit n in the corresponding bitmap is set to 0, or 1 and 0 indicate the opposite.
- bit 0 in the bitmap may be used to indicate whether the current MAC PDU includes the Relay UE's own MAC SDU and/or BSR MAC CE.
- the bit position in the bitmap can be determined by, for example, the bit bit of the leftmost bit of the first byte is 0, and sequentially to the right is 1, 2, ... 7.
- the bit of the leftmost bit of the second byte is 8, and so on.
- the number of bits in the Bitmap depends on the maximum number of Remote UEs that can be connected to the Relay UE, for example, 16 bits.
- each MAC Subheader includes a format for indicating that the corresponding MAC CE is a Relay BSR MAC CE, and a Relay BSR MAC CE.
- the Relay BSR of the at least one Remote UE is carried in the MAC PDU as the at least one MAC CE to the base station, and the MAC PDU is indicated by the MAC Subheader including the bitmap in the MAC Subheader.
- the Relay UE receives the BSR1 sent by the Remote UE1 and the BSR2 sent by the Remote UE2, the Relay UE fills the BSR1 sent by the Remote UE1 and the BSR2 sent by the Remote UE2 to the MAC.
- the positions corresponding to the Remote UE1 and the Remote UE2 in the bitmap in the MAC Subheader1 are respectively filled with 1, and the other parts are filled with 0, and the MAC Subheader 2 is padded to indicate that the MAC CE1 is transmitted by the Remote UE1.
- the Relay BSR MAC CE of the BSR1 and the LCID1 of the format of the Relay BSR MAC CE are filled in the MAC Subheader 3 with a Relay BSR MAC CE indicating that the MAC CE2 is the BSR2 that is transmitted by the Remote UE2, and LCID2 of the format of the Relay BSR MAC CE.
- the MAC PDU may further include: a MAC SDU and a padding
- the MAC Header may further include a MAC Subheader corresponding to the MAC SDU
- the Padding Subheader corresponding to the Padding is not limited in this embodiment of the present invention.
- the MAC PDU may include: a MAC Header, at least one MAC CE, where the at least one MAC CE may include: a MAC CE including a bitmap, and at least one MAC corresponding to at least one Remote UE.
- a CE the MAC CE of the at least one MAC CE is used to carry a Relay BSR of the Remote UE corresponding to the MAC CE; wherein, in this solution, the MAC CE including the Relay BSR may be referred to as a Relay BSR MAC CE;
- the bitmap in the MAC CE includes at least one bit corresponding to the at least one remote UE, and each bit is used to indicate whether the current MAC PDU includes the MAC SDU of the Remote UE corresponding to the bit and/or The BSR MAC CE BSR, for example, if the current MAC PDU includes the MAC SDU and/or the BSR MAC CE of the remote UE whose index value is n, the value of the bit n in the corresponding bitmap is set to 1, otherwise, the corresponding The value of bit n in the bitmap is set to 0, or the meanings of 1 and 0 are opposite.
- bit 0 in the bitmap may be used to indicate whether the current MAC PDU includes the Relay UE's own MAC SDU and/or BSR MAC CE.
- the bit position in the bitmap can be determined by, for example, the bit bit of the leftmost bit of the first byte is 0, and sequentially to the right is 1, 2, ... 7.
- the bit bit of the leftmost bit of the second byte is 8, and so on.
- the number of bits in the Bitmap depends on the maximum number of Remote UEs that can be connected in the Relay UE, for example, 16 bits;
- the MAC Header may include: a MAC Subheader including an LCID, and the LC Subheader includes an LCID for indicating that the bitmap is included.
- MAC CE MAC Subheader including an LCID
- the LC Subheader includes an LCID for indicating that the bitmap is included.
- MAC CE MAC CE
- Each MAC Subheader in the MAC Subheader corresponding to the CE one-to-one includes an LCID indicating the format of the corresponding MAC CE as the Relay BSR MAC CE and the Relay BSR MAC CE.
- the relay BSRs of the remote UEs carried in the MAC PDUs are indicated by the MAC CE including the bitmap, and the relay BSRs of the at least one remote UE are respectively carried in the MAC as the at least one MAC CE.
- the PDU is sent to the base station, and at the same time, the Relay BSR MAC CE is indicated by the MAC Subheader including the LCID.
- the Relay UE receives the BSR1 sent by the Remote UE1 and the BSR2 sent by the Remote UE2, the Relay UE fills the location corresponding to the Remote UE1 and the Remote UE2 in the bitmap in the MAC CE1.
- the other part is filled with 0, and the BSR1 sent by the received Remote UE1 and the BSR2 sent by the Remote UE2 are respectively filled in the MAC CE2 and the MAC CE3, and the MAC Subheader1 is filled with the MAC CE indicating that the MAC CE1 is a bitmap.
- the LCID1 is filled in the MAC Subheader2 to indicate that the MAC CE2 is the Relay BSR MAC CE including the BSR1 transmitted by the Remote UE1, and the LCID2 of the format of the Relay BSR MAC CE, and is filled in the MAC Subheader 3 to indicate that the MAC CE2 is included in the Remote UE2.
- the MAC PDU may further include: a MAC SDU and a padding
- the MAC header may further include a MAC Subheader corresponding to the MAC SDU
- the Padding Subheader corresponding to the Padding is not limited in this embodiment of the present invention.
- the relay BSR MAC CE may include: an identifier of a logical channel group included in a BSR reported by a Remote UE corresponding to the Relay BSR MAC CE, and each of the BSRs reported by the Remote UE. One or more of the amount of data to be transmitted available on the logical channel.
- the format of the Relay BSR MAC CE includes three formats: Long BSR MAC CE, Short BSR MAC CE, and Truncated BSR MAC CE.
- the relay UE when the relay UE receives the UL grant, when the logical channel priority processing is performed, the existing Uplink BSR MAC CE (BSR), the Sidelink BSR MAC CE (SL BSR MACCE), and the received Remote are performed.
- BSR Uplink BSR MAC CE
- SL BSR MACCE Sidelink BSR MAC CE
- the Relay BSR MAC CE generated by the BSR process sent by the UE can process the BSRs according to the following priority order.
- the specific implementation is as follows:
- the Relay UE After obtaining the UL grant allocated by the base station, the Relay UE processes the UL BSR MAC CE, the SL BSR MAC CE, and the Relay BSR MAC CE according to any one of the following priority sequences:
- the above UL BSR MAC CE and SL BSRMAC CE do not include the Padding BSR.
- Padding BSR has lower priority than the above three BSR MAC CEs
- the BSR triggered by the Relay UE is a UL BSR
- the relay UE exists in the cache.
- the relay UE needs to send data to the Remote UE, and the BSR triggered by the Relay UE is the SL BSR.
- the Remote UE configures the following resources based on the base station: the control signaling resource pool and the data resource pool, or the control signaling resource pool, or the SL grant sends the BSR to the Relay UE.
- the Remote UE may also send the SR to the base station through the Relay UE to obtain the configuration of the base station, if the foregoing resource configured by the base station is not configured in advance (such as no SL grant available).
- the SL grant resource sends a BSR to the Relay UE through the SL grant resource configured by the base station.
- the feasibility scheme is as shown in FIG. 7 .
- FIG. 7 is a flowchart of still another method for requesting resources according to an embodiment of the present invention.
- the method is performed by the device shown in FIG. 1 or FIG. 2, and the method may be applied to: when the Remote UE needs to be in the Remote UE and the Relay UE.
- Data on Sidelink When the data transmission is performed, the Remote UE triggers the reporting of the BSR. If the Remote UE does not have the available SL grant, the Remote UE further triggers the SR and transmits the SR to the base station through the Relay UE, so that the base station is the Remote UE according to the SR reported by the Remote UE.
- the resource for transmitting the data is allocated, as shown in FIG. 7, the method may include the following steps:
- At least one Remote UE sends at least one SR to the Relay UE.
- the remote UE may be a Remote UE connected to the Relay UE, and communicate with the base station or the network by using the Relay UE, where the SR is used to notify the base station that there is data in the cache of the Remote UE to be transmitted, so that the base station allocates the SL grant to the Remote UE.
- a Remote UE may send an SR to the Relay UE, and may also send multiple SRs to the Relay UE, which is not limited in this embodiment of the present invention.
- At least one SR may be sent to the Relay UE in the following manner;
- the remote UE acquires a control signaling resource pool configured by the base station for the Remote UE, and the control signaling resource pool is used only for the Remote UE transmission scheduling request;
- the remote UE selects the fourth resource from the control signaling resource pool, and uses the fourth resource to send the SCI including the SR to the relay UE, where the fourth resource may be any resource in the control signaling resource pool.
- a new SCI format may be redefined, and the SCI may include one or more of the following information: a Remote UE Index, a Destination Layer 2ID; wherein, the Remote UE Index, the Destination The Layer 2 ID is the same as the definition in the scheme shown in FIG. 3, and the details are not repeated here.
- the existing SCI format is reused, and the value of some fields in the SCI format0 is set to a special value. For example, if the value of the 1-bit field in the SCI format0 used to indicate the frequency hopping is set to 0 or 1, the All the bits in the SCI format0 used to indicate the resource block assignment are set to 0 or 1, and the existing field is replaced with a new field to make the updated SCI (SCI format shown in Table 5 below). It may include one or more of the following information: Remote UE Index, Destination Layer 2 ID.
- the Relay UE receives at least one SR, processes at least one SR, generates at least one Relay SR, and sends the at least one Relay SR to the base station.
- the Relay UE may send the at least one Relay SR to the base station by using any one of the following manners a to C:
- the Relay UE acquires at least one physical uplink control channel resource allocated by the base station, and at least one physical uplink control channel resource corresponds to at least one Remote UE, and each uplink control channel resource is used to correspond to the uplink transmission.
- the relay UE processes the at least one SR to generate at least one Relay SR, and sends at least one Relay SR to the base station on at least one physical uplink control channel resource allocated by the base station, where at least one Relay SR is associated with at least one Remote UE.
- Method b the Relay UE performs a combination process on at least one SR to generate a Relay SR
- the Relay UE acquires a UL grant allocated by the base station
- the Relay UE sends the MAC PDU carrying the Relay SR to the base station through the resource indicated by the UL grant.
- the Relay UE After the relay UE generates the Relay SR, if there is no UL grant available, the Relay UE triggers a UL SR, and sends the UL SR to the base station to request the base station to allocate the UL grant.
- the MAC PDU may include: MAC Header, MAC CE, and MAC.
- the header includes a MAC Subheader, the MAC CE includes a Relay SR, the MAC Subheader includes an LCID, the MAC Subheader includes an LCID for indicating that the MAC CE is a Relay SR MAC CE, and the Relay SR MAC CE includes a bitmap, and the bitmap includes one-to-one correspondence with at least one Remote UE. At least one bit, each bit is used to indicate whether the Remote UE corresponding to the bit reports the SR.
- the value of the bit n in the corresponding bitmap Set to 0; otherwise, the value of bit n in its corresponding bitmap is set to 0, or 1 and 0 indicate the opposite.
- the manner of determining the bit in the bitmap may be, for example, that the bit bit of the leftmost bit of the first byte is 0, and sequentially to the right is 1, 2, ... 7.
- the bit of the leftmost bit of the second byte is 8, and so on.
- the number of bits in the Bitmap depends on the maximum number of Remote UEs that can be connected in the Relay UE. For example, it can be 16 bits.
- the Relay UE receives the SR1 sent by the Remote UE1 and the SR2 sent by the Remote UE2, the Relay UE combines SR1 and SR2 into one Relay SR, and fills the Relay SR into the MAC CE.
- the MAC Suheader1 is filled with an LCID indicating that the MAC CE is the MAC CE including the Relay SR.
- an LCID value indicating the Relay SR MAC CE may be taken out from the reserved value of the LCID of the current uplink shared channel. For example, as shown in Table 6 below, 10101 may be used. Indicates the MAC CE that contains the Relay SR. The indications of the other values of the LCID are still the same as the existing ones, and the details are not repeated here.
- the mode c the Relay UE processes the at least one SR separately, and generates at least one relay scheduling request Relay SR, where at least one Relay SR is in one-to-one correspondence with at least one Remote UE;
- the Relay UE acquires a UL grant allocated by the base station
- the Relay UE sends a MAC PDU carrying at least one Relay SR to the base station according to the resource indicated by the UL grant.
- the Relay UE After the relay UE generates the Relay SR, if there is no UL grant available, the Relay UE triggers a UL SR, and sends the UL SR to the base station to request the base station to allocate the UL grant.
- the MAC PDU includes a MAC Header; the MAC Header includes at least one MAC Subheader, at least one MAC Subheader and at least one Remote UE. One-to-one correspondence; each MAC Subheader contains an index of its corresponding Remote UE and indication information indicating the type of the next MAC Subheader adjacent thereto.
- the Relay UE receives the SR1 sent by the Remote UE1 and the SR2 sent by the Remote UE2, the Relay UE fills the index of the Remote UE1 in the MAC Suheader1 and the index of the Remote UE2 in the MAC Suheader2.
- the MAC Subheader that is filled with the Remote UE Index may include other bits, such as a Tbit and a reserved (R) bit, in addition to the Remote UE Index, where the value of the Tbit may be used to indicate that the MAC Subheader is adjacent to the MAC Subheader.
- the next MAC Subheader is a newly defined Subheader containing the Remote UE Index or a Subheader containing the newly defined LCID, or a Subheader defined by the original system.
- the MAC Subheader there are currently two reserved bits in the MAC Subheader that contains the LCID.
- One of the reserved bits may be used to indicate whether the next MAC Subheader adjacent to the MAC Subheader is a newly defined Subheader containing the Remote UE Index, or is similar to the Subheader including the LCID defined in the MAC PDU on the current uplink and downlink. .
- the base station allocates an SL grant to the at least one Remote UE according to the at least one Relay SR.
- the process for the base station to allocate the SL grant to the at least one remote UE according to the at least one relay SR may refer to the prior art, and details are not described herein again.
- the at least one Remote UE sends the at least one BSR to the Relay UE by using the resource indicated by the SL grant allocated by the base station.
- the method of transmitting the at least one BSR to the relay UE by using the resource indicated by the SL grant allocated by the base station may refer to the manners 1 to 3 in the scheme shown in FIG. 3, and details are not repeated herein. .
- the Relay UE receives the at least one BSR, processes the at least one BSR, generates at least one Relay BSR, and sends the at least one Relay BSR to the base station.
- step 205 Relay UE sends the at least one Relay BSR to the base station
- the relay UE receives the UL grant
- the existing Uplink BSR MAC CE (UL BSR)
- the Sidelink BSR MAC CE (SL BSR)
- the received Remote is performed.
- the Relay SR MAC CE generated by the SR process sent by the UE may be processed according to the following priority order, and the specific implementation is as follows:
- the relay UE After obtaining the UL grant allocated by the base station, the relay UE processes the UL BSR MAC CE, the SL BSR MAC CE, and the Relay SR MAC CE according to any one of the following priority sequences:
- the resource request method provided by the embodiment of the present invention is mainly introduced in the perspective of the interaction between the remote UE, the relay UE, and the base station.
- the Remote UE, the Relay UE, and the base station include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above functions.
- the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
- the embodiments of the present invention may divide the functional modules of the Remote UE, the Relay UE, and the base station according to the foregoing method examples, and the following, for example, each functional module may be divided according to each function, or two or more functions may be used.
- Integrated in a processing module Integrated in a processing module.
- the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
- FIG. 9 is the present invention.
- the Remote UE 30 may be used to implement the method performed by the Remote UE in the foregoing method embodiment shown in FIG. 3 or FIG. 7, the Remote The UE 30 may include: a triggering unit 101, a sending unit 102, and a receiving unit 103; for example, the triggering unit 101 is configured to support the action of the remote UE 30 to perform the triggering of the BSR in FIG. 3 or FIG. 7, and the sending unit 102 is configured to support the Remote UE 30 to perform FIG. 3 or In FIG.
- the action of transmitting a BSR or an SR to the Relay UE is performed, and the receiving unit 103 is configured to support the action of the Remote UE 30 to perform the SL grant or the UL grant configured by the receiving base station in FIG. 3 or FIG. 7.
- the trigger unit 101 shown in FIG. 9 can be integrated into the processor 3012 shown in FIG. 2, so that the processor 3012 performs the specific function of the trigger unit 101, and the sending unit 102,
- the receiving unit 103 can be integrated in the communication interface 3011 shown in FIG. 2, so that the communication interface 3011 performs the specific functions of the transmitting unit 102 and the receiving unit 103.
- FIG. 10 is a schematic diagram of a possible structure of a Relay UE according to an embodiment of the present invention.
- the Relay UE 20 may be used to implement the foregoing FIG. 3 or The method performed by the Relay UE in the method embodiment shown in FIG. 7 , the relay UE 20 may include: a receiving unit 201, a generating unit 202, and a sending unit 203; for example, the receiving unit 201 is configured to support the Remote UE 30 to perform the implementation in FIG. 3 or FIG. Receiving the action of the BSR or the SR sent by the Remote UE, the generating unit 202 supports the Relay UE 20 to perform the action of processing the BSR or the SR in FIG. 3 or FIG. 7, and the sending unit 102 is configured to support the Relay UE 20 to perform the BSR transmission to the base station in FIG. 3 or FIG. 7. Or the action of the SR.
- the generating unit 202 shown in FIG. 10 can be integrated into the processor 2012 shown in FIG. 2, so that the processor 2012 performs the specific function of the generating unit 202, and the receiving unit 201,
- the sending unit 203 can be integrated In the communication interface 2011 shown in FIG. 2, the communication interface 2011 is caused to perform the specific functions of the receiving unit 201 and the transmitting unit 203.
- the embodiment of the present invention further provides a resource requesting system, where the resource requesting system may include: the Remote UE 30, the Relay UE 20, and the base station according to any of the foregoing embodiments.
- the resource requesting system provided by the embodiment of the present invention implements the resource requesting method shown in FIG. 3 or FIG. 7 above. Therefore, the same beneficial effects as the foregoing resource requesting system can be achieved, and details are not repeatedly described herein.
- the disclosed system, apparatus, and method may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network devices. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
- the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
- the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the method described in various embodiments of the present invention. step.
- the foregoing storage medium includes: Universal Serial Bus (USB) flash drive (English: USB flash drive), mobile hard disk, read-only memory (English: read-only memory, ROM), random access
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Abstract
一种资源请求方法、设备及系统,涉及通信技术领域,以解决在采用基站调度的资源分配时,UE向基站发送资源请求信息导致的UE消耗较多的功率的问题。该方法可以包括:Remote UE触发缓存状态报告BSR,向Relay UE发送所述BSR,所述BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量。
Description
本发明涉及通信技术领域,尤其涉及一种资源请求方法、设备及系统。
目前,在设备到设备(英文:Device-to-Device,D2D)通信方式中,一种比较特殊的方式是一个用户设备(英文:User Equipment,UE)通过另外一个具备中继功能的UE与网络进行连接,通常情况下,将前者称为远端用户设备(英文:Remote UE),将后者称为中继用户设备(英文:Relay UE)。
这种Remote UE和Relay UE间的D2D通信,可以采用基于无线局域网(英文:Wireless Local Area Network,WLAN)技术、蓝牙技术的通信方式进行通信,也可以采用基于长期演进侧行链路(英文:Long Term Evolution Sidelink,LTE Sidelink)技术的通信方式进行通信。在基于LTE Sidelink技术的通信方式中,Sidelink上的资源分配包括两种方式:方式一:基站调度的资源分配。即当进行D2D通信的用户设备需要在Sidelink上传输数据时,用户设备需要首先向基站发送资源请求信息,此后基站会为用户设备分配专用的资源来在sidelink上进行数据传输;方式二:用户设备自主选择资源。即当进行D2D通信的用户设备需要在Sidelink上传输数据时,用户设备可以在基站配置的资源池中自己随机选择资源来在sidelink上进行数据传输。所述的基站配置的资源池可以通过系统信息来配置,也可以在收到用户设备要进行Sidelink通信的请求后通过专用信令来配置。
在一个用户设备通过另外一个具备中继功能的UE与网络进行连接的场景下,当RemoteUE与Relay UE采用基站调度的资源分配方式来与Relay UE进行D2D通信时,为了能向基站发送资源请求
信息,Remote UE需要维护和基站间的上行同步,即Remote UE需要发送上行信号给基站,或者,Remote UE不需要维护和基站间的上行同步,而是当需要发送资源请求信息时,Remote UE通过随机接入过程来请求获取上行同步并同时请求上行授权。无论通过哪种方式,都将消耗Remote UE较多的功率。
发明内容
本申请提供一种资源请求方法、设备及系统,以解决在采用基站调度的资源分配时,UE向基站发送资源请求信息导致的UE消耗较多的功率的问题。
为达到上述目的,本申请采用如下技术方案:
第一方面,提供一种资源请求方法,该方法可以包括:Remote UE触发用于向基站提供Remote UE的缓存中可用的待传输的数据量的BSR,向中继用户设备Relay UE发送BSR。
如此,Remote UE可以通过Relay UE向基站上报资源请求信息,以此避免Remote UE直接将自身的资源请求信息上报给基站带来的功率消耗增加的问题,其中,Remote UE通过Relay UE向基站上报其他资源请求信息的方法可以参考本发明实施例提供的资源请求方法。
在第一方面的一种可实现方式中,结合第一方面,Remote UE可以通过下述方式一~方式三中的任一种方式向Relay UE发送任一BSR:
方式一:Remote UE获取基站为Remote UE配置的控制信令资源池和数据资源池,控制信令资源池和数据资源用于Remote UE传输资源请求信息,从控制信令资源池中选取第一资源,采用第一资源向Relay UE发送侧行链路控制消息SCI,Remote UE从数据资源池中选取第二资源,采用第二资源向Relay UE发送包含有BSR的媒体接入控制协议数据单元MAC PDU;
其中,SCI包含用于指示第二资源的位置信息的指示信息,MAC PDU包括:媒体接入控制头MAC Header、和第一媒体接入控制控
制单元MAC CE;MAC Header包含第一媒体接入控制子头MAC Subheader,第一MAC CE包含BSR;第一MAC Subheader包含逻辑信道标识LCID,LCID用于指示第一MAC CE为BSR MAC CE、以及BSR MAC CE的格式。
方式二:Remote UE获取基站为Remote UE配置的控制信令资源池,控制信令资源池用于Remote UE传输资源请求信息,从控制信令资源池中选取第三资源,采用第三资源向Relay UE发送包含BSR的SCI,SCI可以包含:Remote UE的索引、目的端层2标识、Remote UE的每个逻辑信道组对应的缓存中待传输的数据量、以及BSR的格式中的一种或多种信息;
其中,Remote UE的索引为Remote UE在Relay UE下的唯一标识,目的端层2标识为Relay UE的目的层2地址;BSR的格式用于指示BSR为长缓存状态报告Long BSR、或者短缓存状态报告Short BSR、或者截短缓存状态报告Truncated BSR。
方式三:Remote UE接收基站分配的侧行链路授权SL grant,通过SL grant指示的资源向Relay UE发送包含BSR的MAC PDU。
其中,在方式三种,MAC PDU可以包括:MAC Header、第二MAC CE和第一媒体接入控制服务数据单元;MAC Header包含:第一MAC Subheader,第二MAC CE为包含BSR的MAC CE;第二MAC Header包含LCID,第二MAC Header包含的LCID用于指示第二MAC CE为BSR MAC CE、以及BSR MAC CE的格式。
其中,在上述三个方式中,BSR MAC CE为上行链路BSR MAC CE或者侧行链路BSR MAC CE;若BSR MAC CE为上行链路BSR MAC CE,则BSR MAC CE的格式包括:Long BSR MAC CE、Short BSR MAC CE、Truncated BSR MAC CE三种格式;若BSR MAC CE为侧行链路BSR MAC CE,则BSR MAC CE的格式包括侧行链路缓存状态报告Sidelink BSR MAC CE、截短侧行链路缓存状态报告Truncated Sidelink BSR MAC CE两种格式。
如此,Remote UE可以通过上述方式向Relay UE发送BSR。
在第一方面的又一种可实现方式中,结合第一方面或第一方面的可实现方式,Remote UE接收基站分配的SL grant可以包括:
Remote UE触发调度请求SR,并向Relay UE发送SR,调度请求用于向基站请求分配SL grant。
可选的,Remote UE向Relay UE发送SR可以包括:
Remote UE获取基站为Remote UE配置的用于Remote UE传输调度请求的控制信令资源池,从控制信令资源池中选取第四资源,采用第四资源向Relay UE发送包含SR的SCI。
其中,包含SR的SCI的可以包含:Remote UE的索引、目的端层2标识中的一种或多种信息;Remote UE的索引为Remote UE在Relay UE下的唯一标识,目的端层2标识为Relay UE的目的层2地址。
第二方面,提供一种资源请求方法,该方法可以包括:
Relay UE接收至少一个远端用户设备Remote UE上报的至少一个用于向基站提供Remote UE的缓存中可用的待传输的数据量的BSR,对至少一个BSR进行处理生成至少一个Relay BSR,并向基站发送至少一个Relay BSR。
如此,Relay UE可以将接收到的Remote UE上报的资源请求信息上报给基站,以此避免Remote UE直接将自身的资源请求信息上报给基站带来的功率消耗增加的问题,其中,Remote UE通过Relay UE向基站上报其他资源请求信息的方法可以参考本发明实施例提供的资源请求方法。
在第二方面的一种可实现方式中,结合第二方面,Relay UE可以采用下述方式(1)或方式(2)对至少一个BSR进行处理生成Relay BSR,并向基站发送Relay BSR:
方式(1):Relay UE对至少一个BSR进行组合处理,生成一个中继缓存状态报告Relay BSR,获取基站分配的上行调度授权UL grant,通过UL grant所指示的资源,向基站发送携带有Relay BSR的媒体接入控制协议数据单元MAC PDU。
其中,该MAC PDU可以包括:媒体接入控制头MAC Header、第一媒体接入控制控制单元MAC CE,MAC Header包含:第一MAC Subheader,第一MAC CE包含Relay BSR;
第一MAC Subheader包含LCID,LCID用于指示第一MAC CE为Relay BSR MAC CE;Relay BSR MAC CE包括:与至少一个Remote UE一一对应的至少一组BSR信息;每组BSR信息包括:与该组BSR信息对应的Remote UE的索引、Remote UE上报的BSR的格式、Remote UE上报的BSR中包含的逻辑信道组的个数、Remote UE上报的BSR中包含的逻辑信道组的标识、Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息。
其中,Relay UE获取基站分配的UL grant可以包括:
若Relay UE没有可用的UL grant,Relay UE触发调度请求SR,并向基站发送SR,SR用于向基站请求分配UL grant。
方式(2):Relay UE对至少一个BSR分别进行处理,生成至少一个Relay BSR,至少一个Relay BSR与Remote UE一一对应,Relay UE获取基站分配的UL grant,通过UL grant所指示的资源,向基站发送携带有至少一个Relay BSR的MAC PDU。
在方式(2)中,携带Relay BSR的MAC PDU可以采用下述(2.1)~(2.5)的几种设计方案:
方案(2.1):MAC PDU包括:MAC Header、至少一个第二MAC CE;MAC Header包含:至少一个第二MAC Subheader,至少一个第二MAC Subheader与至少一个第二MAC CE一一对应,至少一个第二MAC CE分别为Relay BSR MAC CE,至少一个第二MAC CE与至少一个Remote UE的Relay BSR一一对应;
每个第二MAC Subheader包含LCID,每个第二MAC Subheader包含的LCID用于指示与该第二MAC Subheader对应的第二MAC CE为Relay BSR MAC CE、以及Relay BSR MAC CE的格式;
每个第二MAC CE包含:与该第二MAC CE相对应的Remote UE的索引、Remote UE上报的BSR中包含的逻辑信道组的标识、
Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息。
方案(2.2):MAC PDU包括:MAC Header、至少一个第三MAC CE,至少一个第三MAC CE与至少一个Remote UE一一对应,每个第三MAC CE包含与该第三MAC CE相对应的Remote UE的Relay BSR;
MAC Header包含:至少一个MAC Subheader,至少一个MAC Subheader包含第三MAC Subheader和第四MAC Subheader,第三MAC Subheader、第四MAC Subheader与第一Remote UE相对应,第一Remote UE为至少一个Remote UE中的任一Remote UE;
第三MAC Subheader包含:第一Remote UE的Index;
第四MAC Subheader包含LCID,第四MAC Subheader包含的LCID用于指示与第一Remote UE相对应的第三MAC CE为Relay BSR MAC CE、以及Relay BSR MAC CE的格式。
方案(2.3):MAC PDU包括:MAC Header、至少一MAC CE,MAC Header包含:至少一个MAC Subheader;
至少一个MAC Subheader包含第五MAC Subheader和第六MAC Subheader,至少一MAC CE包含第四MAC CE和第五MAC CE;第三MAC Subheader、第四MAC Subheader与第二Remote UE相对应,第四MAC CE、第五MAC CE与第二Remote UE相对应,第二Remote UE为至少一个Remote UE中的任一Remote UE;
第五MAC Subheader包含LCID,第五MAC Subheader包含的LCID用于指示第四MAC CE中包含第二Remote UE的Index;
第六MAC Subheader包含LCID,第六MAC Subheader包含的LCID用于指示第五MAC CE为Relay BSR MAC CE、以及Relay BSR MAC CE的格式;
第四MAC CE包含第二Remote UE的Index;
第五MAC CE包含第二Remote UE的Relay BSR。
方案(2.4):MAC PDU包括:MAC Header、至少一个第六MAC
CE,至少一个第六MAC CE与至少一个Remote UE一一对应,每个第六MAC CE包含与该第六MAC CE对应的Remote UE的Relay BSR;
MAC Header包含:第七MAC Subheader、和至少一个第八MAC Subheader,至少一个第八MAC Subheader与至少一个第六MAC CE一一对应;
第七MAC Subheader包含比特图bitmap,bitmap包含至少一个比特位,至少一个比特位与至少一个Remote UE一一对应,每个比特位用于指示所述MAC PDU中是否包含与该比特位对应的Remote UE上报的BSR MAC CE;
每个第八MAC Subheader包含LCID,每个第八MAC Subheader包含的LCID用于指示其所对应的第六MAC CE为Relay BSR MAC CE,以及Relay BSR MAC CE的格式。
方案(2.5)MAC PDU包括:MAC Header、第七MAC CE、至少一个第八MAC CE,MAC Header包含:第九MAC Subheader和至少一个第十MAC Subheader;
至少一个第十MAC Subheader与至少一个第八MAC CE一一对应,至少一个第八MAC CE与至少一个Remote UE一一对应,每个第八MAC CE包含与其对应的Remote UE的Relay BSR;
第九MAC Subheader包含LCID,第九MAC Subheader包含的LCID用于指示第七MAC CE包含bitmap;
每个第十MAC Subheader包含LCID,每个第十MAC Subheader包含的LCID用于指示其所对应的第八MAC CE为Relay BSR MAC CE、以及Relay BSR MAC CE的格式;
第七MAC Subheader包含bitmap,bitmap包含至少一个比特位,至少一个比特位与至少一个Remote UE一一对应,每个比特位用于指示所述MAC PDU中是否包含与该比特位对应的Remote UE上报的BSR MAC CE。
需要说明的是,在方案(2.2)~(2.5)中,Relay BSR MAC CE
可以包含:与Relay BSR MAC CE对应的Remote UE上报的BSR中包含的逻辑信道组的标识、Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息;
Relay BSR MAC CE的格式包括:Long BSR MAC CE、Short BSR MAC CE、Truncated BSR MAC CE三种格式。
如此,Relay UE可以采用上述方式将接收到的Remote UE发送的BSR发送至基站。
在第二方面的又一种可实现方式中,结合第二方面或第二方面的可实现方式,所述Relay UE在获取所述基站分配的UL grant之后,在进行逻辑信道处理时,按照下述任意一种优先级顺序对UL BSR MAC CE、SL BSR MAC CE、Relay BSR MAC CE进行处理:
UL BSR MAC CE>SL BSR MAC CE=Relay BSR MAC CE;
UL BSR MAC CE=Relay BSR MAC CE>SL BSR MAC CE;
UL BSR MAC CE>SL BSR MAC CE>Relay BSR MAC CE;
UL BSR MAC CE>Relay BSR MAC CE>SL BSR MAC CE。
在第二方面的又一种可实现方式中,结合第二方面或第二方面的可实现方式,在所述Relay UE接收至少一个Remote UE发送的至少一个BSR之前,该方法还可以包括:
Relay UE接收至少一个Remote UE发送的至少一个用于向基站请求分配SL grantSR,向基站发送至少一个SR。
其中,Relay UE可以通过下述方式(a)~(c)向基站发送至少一个SR:
方式(a):Relay UE获取基站分配的至少一份物理上行控制信道资源,至少一份物理上行控制信道资源与至少一个Remote UE一一对应,每份上行控制信道资源用于在上行链路传输与其对应的Remote UE的SR,在基站分配的至少一份物理上行控制信道资源上向基站发送至少一个SR。
方式(b):Relay UE对至少一个SR进行组合处理,生成一个中继调度请求Relay SR,获取基站分配的UL grant,根据UL grant
所指示的资源,向基站发送携带有Relay SR的MAC PDU;
其中,该MAC PDU可以包括:MAC Header、MAC CE,MAC Header包含MAC Subheader,MAC CE包含Relay SR;MAC Subheader包含LCID,MAC Subheader包含的LCID用于指示MAC CE为Relay SR MAC CE;Relay SR MAC CE包含至少一个比特bit,至少一个bit与Remote UE一一对应,bit的取值用于表示:与bit对应的Remote UE是否上报SR。
方式(c):Relay UE对至少一个SR分别进行处理,生成至少一个中继调度请求Relay SR,至少一个Relay SR与至少一个Remote UE一一对应,获取基站分配的UL grant,根据UL grant所指示的资源,向基站发送携带有至少一个Relay SR的MAC PDU;
其中,该MAC PDU可以包括MAC Header;MAC Header包含至少一个MAC Subheader,至少一个MAC Subheader与至少一个Remote UE一一对应;每个MAC Subheader包含与其对应的Remote UE的索引、以及用于指示与其相邻的下一MAC Subheader的类型的指示信息。
如此,Relay UE可以通过上述方式向基站发送至少一个SR。
在第二方面的再一种可实现方式中,结合第二方面或第二方面的可实现方式,在Relay UE收到UL grant,在进行逻辑信道优先级处理时,可以按照下述任意一种优先级顺序对UL BSR MAC CE、SL BSR MAC CE、Relay SR MAC CE进行处理:
UL BSR MAC CE>SL BSR MAC CE=Relay SR MAC CE;
Relay SR MAC CE>UL BSR MAC CE>SL BSR MAC CE;
UL BSR MAC CE>Relay SR MAC CE>SL BSR MAC CE。
第三方面,提供一种Remote UE,所述Remote UE包括:
触发单元,用于触发缓存状态报告BSR;
发送单元,用于向中继用户设备Relay UE发送所述触发单元触发的BSR,所述BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量。
其中,第三方面的具体实现方式可以参考第一方面或第一方面的可能的实现方式提供的资源请求方法中Remote UE的行为功能,在此不再重复赘述。因此,第三方面提供的Remote UE可以达到与第一方面相同的有益效果。
第四方面,本发明提供一种Remote UE,该Remote UE可以包括:
处理器,用于触发缓存状态报告BSR;
通信接口,用于向中继用户设备Relay UE发送所述处理器触发的BSR,所述BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量。
其中,第四方面的具体实现方式可以参考第一方面或第一方面的可能的实现方式提供的资源请求方法中Remote UE的行为功能,在此不再重复赘述。因此,第四方面提供的Remote UE可以达到与第一方面相同的有益效果。
第五方面,本发明提供一种存储一个或多个程序的非易失性计算机可读存储介质,该一个或多个程序包括指令,指令当被包括第三方面或第四方面或上述任一种可能的实现方式所述的Remote UE执行时,使Remote UE执行以下事件:
触发缓存状态报告BSR,向中继用户设备Relay UE发送所述处理器触发的BSR,所述BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量。
其中,第五方面的具体实现方式可以参考第一方面或第一方面的可能的实现方式提供的资源请求方法中Remote UE的行为功能,在此不再重复赘述。因此,第五方面提供的Remote UE可以达到与第一方面相同的有益效果。
第六方面,提供一种Relay UE,所述Relay UE包括:
接收单元,用于接收至少一个远端用户设备Remote UE上报的至少一个缓存状态报告BSR,每个Remote UE发送的BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量;
生成单元,用于对所述接收单元接收到的至少一个BSR进行处
理生成至少一个Relay BSR;
发送单元,用于向所述基站发送所述至少一个Relay BSR。
其中,第六方面的具体实现方式可以参考第二方面或第二方面的可能的实现方式提供的资源请求方法中Relay UE的行为功能,在此不再重复赘述。因此,第六方面提供的Relay UE可以达到与第二方面相同的有益效果。
第七方面,提供一种Relay UE,所述Relay UE包括:
通信接口,用于接收至少一个远端用户设备Remote UE上报的至少一个缓存状态报告BSR,每个Remote UE发送的BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量;
处理器,用于对所述至少一个BSR进行处理生成至少一个Relay BSR;
所述通信接口,还用于向所述基站发送所述至少一个Relay BSR。
其中,第七方面的具体实现方式可以参考第二方面或第二方面的可能的实现方式提供的资源请求方法中Relay UE的行为功能,在此不再重复赘述。因此,第七方面提供的Relay UE可以达到与第二方面相同的有益效果。
第八方面,本发明提供一种存储一个或多个程序的非易失性计算机可读存储介质,该一个或多个程序包括指令,指令当被包括第六方面或第七方面或上述任一种可能的实现方式所述的Relay UE执行时,使Relay UE执行以下事件:
接收至少一个远端用户设备Remote UE上报的至少一个缓存状态报告BSR,每个Remote UE发送的BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量,对所述至少一个BSR进行处理生成至少一个Relay BSR,向所述基站发送所述至少一个Relay BSR。
其中,第八方面的具体实现方式可以参考第二方面或第二方面的可能的实现方式提供的资源请求方法中Relay UE的行为功能,在
此不再重复赘述。因此,第八方面提供的Relay UE可以达到与第二方面相同的有益效果。
第九方面,本发明提供一种资源请求系统,包括如第三方面或第四方面或第五方面或上述任一可实现方式所述的Remote UE、如第六方面或第七方面或第八方面或上述任一可实现方式所述的Relay UE、以及基站。
其中,第九方面所述的系统用于实现上述第一方面或第二方面所示的资源请求方法,因此,可以达到与上述资源请求系统相同的有益效果,此处不再重复赘述
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为本发明实施例提供的网络架构示意图;
图2为本发明实施例提供的一种系统架构示意图;
图3为本发明实施例提供的一种资源请求方法的流程图;
图3a为本发明实施例提供的一种MAC PDU的格式示意图;
图3b为本发明实施例提供的一种MAC PDU的格式示意图;
图4a为本发明实施例提供的一种BSR的格式示意图;
图4b为本发明实施例提供的一种BSR的格式示意图;
图4c为本发明实施例提供的一种BSR的格式示意图;
图4d为本发明实施例提供的一种BSR的格式示意图;
图5a本发明实施例提供的一种MAC PDU的格式示意图;
图5b本发明实施例提供的一种MAC PDU的格式示意图;
图6a为本发明实施例提供的一种MAC PDU的格式示意图;
图6b为本发明实施例提供的一种MAC PDU的格式示意图;
图6c为本发明实施例提供的一种MAC PDU的格式示意图;
图6d为本发明实施例提供的一种MAC PDU的格式示意图;
图6e为本发明实施例提供的一种MAC PDU的格式示意图;
图7为本发明实施例提供的一种资源请求方法的流程图;
图8a为本发明实施例提供的一种MAC PDU的格式示意图;
图8b为本发明实施例提供的一种MAC PDU的格式示意图;
图9为本发明实施例提供的一种Remote UE的结构图;
图10为本发明实施例提供的一种Relay UE的结构图;
图11为本发明实施例提供的一种资源请求系统的结构图。
本发明的原理是:在Remote UE通过Relay UE与网络连接,并且基站为Remote UE配置在Sidelink上传输数据采用基于基站调度的的资源分配方式时,通过Relay UE将Remote UE发起的资源请求信息(如缓存状态报告(英文:Buffer Status Report,BSR)、调度请求(英文:Scheduling Request,SR))发送至基站,以避免Remote UE直接将资源请求信息发送至基站导致的Remote UE功率消耗增加的问题。
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。
在本发明的描述中,需要理解的是,术语“第一”、“第二”、“另一”等指示的系统或元件为基于实施例描述的具有一定功能的系统或元件,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的系统或元件必须有此命名,因此不能理解为对本发明的限制。
图1为本发明实施例提供的网络架构示意图,该网络可以适用于本实施例提供的资源请求方法。如图1所示,该网络架构可以包括:基站10、该基站10覆盖范围内的Relay UE20、以及与Relay UE20连接的多个Remote UE30;基站10可以是LTE中的演进型基站(英
文:Evolutional Node B,eNB或e-NodeB),本发明并不限定。Relay UE20可以为(英文:User Uniqupment,UE),也可以为:用户设备(Terminal)、移动台(英文:Mobile Station,MS)、移动用户设备(Mobile Terminal)、还可以为可穿戴设备的佩戴者的智能移动终端等,本发明并不限定,Relay UE20可以经无线接入网(英文:Radio AccessNetwork,RAN)与基站10进行通信。Remote UE30具有体积小、电池容量小、功耗低的特点,例如:可以为可穿戴设备,其中,可穿戴式设备包括但不限于智能手表、手智能环、智能腕带、智能眼镜、智能项链、智能戒指、智能耳环、智能手机等各类智能的穿戴设备。在实际应用中,Remote UE30可以通过Relay UE20与基站10进行通信,Remote UE30与Relay UE20之间可以基于无线局域网(WLAN)、蓝牙技术等通信方式进行通信,也可以基于LTE Sidelink通信技术进行通信,本发明实施例对此不进行限定。需要说明的是,图1仅为示意图,图1中设备的个数对本发明提供的技术方案不构成限定,在实际部署过程中,可以以不同于图1所示的设备的个数进行部署。
具体的,如图2所示,基站10可以包括:通信接口1011、处理器1012、存储器1013以及至少一个通信总线1014,用于实现这些装置之间的连接和相互通信;Relay UE20可以包括:通信接口2011、处理器2012、存储器2013以及至少一个通信总线2014,用于实现这些装置之间的连接和相互通信;Remote UE30可以包括:通信接口3011、处理器3012、存储器3013以及至少一个通信总线3014,用于实现这些装置之间的连接和相互通信。
其中,通信接口1011、通信接口2011、通信接口3011,可以由天线来实现,可用于与外部网元之间进行数据交互,如:基站10的通信接口1011可收发与Relay UE20间的数据包或资源请求信息;Relay UE20的通信接口2011可收发与UE或基站10间或Remote UE30之间的数据包或资源请求信息。例如:通信接口3011可以将Remote UE30的资源请求信息(如BSR)发送至通信接口2011,通
信接口2011接收到该资源请求信息后,将该资源请求信息发送至通信接口1011,交由基站10处理。
处理器1012、处理器2012、处理器3012,可能是一个中央处理器(英文:Central Processing Unit,CPU),也可以是特定集成电路(英文:Application Specific Integrated Circuit,ASIC),或者是被配置成实施本发明实施例的一个或多个集成电路。例如:一个或多个微处理器(英文:Digital Singnal Processor,DSP),或,一个或者多个现场可编程门阵列(英文:Field Programmable Gate Array,FPGA)。处理器1012、处理器2012、处理器3012具有处理管理功能,具体的,处理器1012可以对接收到的Relay UE20发送的数据或信息进行处理,处理器2012可以对接收到的Remote UE30发送的数据或信息进行处理,处理器3012可以对Remote UE30自身产生的数据或信息进行处理、或者对其他设备发送的信息或数据进行处理。
存储器1013、存储器2013、存储器3013,可以是易失性存储器(volatile memory),例如随机存取存储器(英文:Random-Access Memory,RAM);或者非易失性存储器(non-volatile memory)。例如只读存储器(英文:Read-Only Memory,ROM),快闪存储器(flash memory),硬盘(hard disk drive,HDD)或固态硬盘(英文:Solid-State Drive,SSD);或者上述种类的存储器的组合。具体的,存储器1013、存储器2013、存储器3013内可以存储支持本发明实施例所述的资源请求方法的数据或程序代码,以便处理器1012、处理器2012、处理器3012根据自身所处设备中存储器内存储的数据或程序代码执行本发明实施例提供的资源请求方法。
通信总线1014、通信总线2014、通信总线3013可以分为地址总线、数据总线、控制总线等,可以是工业标准体系结构(英文:Industry Standard Architecture,ISA)总线、外部设备互连(英文:Peripheral Component,PCI)总线或扩展工业标准体系结构(英文:Extended Industry Standard Architecture,EISA)总线等。为便于表示,图2中仅用一条线表示,但并不表示仅有一根总线或一种类型
的总线。
为便于描述,以下实施例以步骤的形式示出并详细描述了本发明提供的资源请求方法的过程,其中,示出的步骤也可以在一组可执行指令的计算机系统中执行。此外,虽然在图中示出了逻辑顺序,但是在某些情况下,可以以不同于此处的顺序执行所示出或描述的步骤。
图3为本发明实施例提供的一种资源请求方法的流程图,该方法由图1或图2所示的设备交互执行,该方法可以应用于:当Remote UE需要在Remote UE与Relay UE间的Sidelink上进行数据传输或者Remote UE需要在Remote UE与基站间的上行链路(Uplink)进行数据传输时,Remote UE触发上报BSR,以便基站根据Remote UE上报的BSR为Remote UE分配传输数据的资源。其中,当Remote UE需要在Remote UE与Relay UE间的Sidelink上进行数据传输时,该BSR用于向基站提供Remote UE的缓存中待通过Sidelink传输的数据量;当Remote UE需要在Remote UE与基站间的Uplink进行数据传输时,该BSR用于向基站提供Remote UE的缓存中待通过Uplink传输的数据量。需要说明的是,除BSR之外,Remote UE还可以通过Relay UE向基站上报其他资源请求信息,以此避免Remote UE直接将自身的资源请求信息上报给基站带来的功率消耗增加的问题,其中,Remote UE通过Relay UE向基站上报其他资源请求信息的方法可以参考本发明实施例提供的资源请求方法。
如图3所示,该方法可以包括以下步骤:
101:至少一个Remote UE向Relay UE发送至少一个BSR。
其中,该至少一个Remote UE与该Relay UE连接,通过该Relay UE提供的中继服务与基站通信,每个Remote UE可以向Relay UE发送一个或多个BSR,每个Remote UE可以与至少一个Relay UE连接,每个BSR用于向基站提供发送该BSR的Remote UE的缓存(Buffer)中可用的待传输的数据量。
需要说明的是,至少一个Remote UE可以同时向Relay UE发
送至少一个BSR,也可以不需要先后向Relay UE发送至少一个BSR,本发明实施例对此不进行限定。
102:Relay UE接收至少一个Remote UE发送的至少一个BSR,对至少一个BSR进行处理生成至少一个Relay BSR,并向基站发送所述至少一个Relay BSR。
其中,Relay UE向基站发送的至少一个Relay BSR可以为:Relay UE对至少一个Remote UE发送的至少一个BSR处理后的多个BSR,也可以为Relay UE对至少一个Remote UE发送的至少一个BSR不经处理后的多个BSR,本发明实施例对此不进行限定,在本发明实施例中,仅需要Relay UE向基站发送的至少一个Relay BSR中包含至少一个Remote UE发送的至少一个BSR所要表达的意思即可。
例如,与Relay UE同时连接有两个Remote UE:Remote UE1、Remote UE2,且这Remote UE1触发BSR1,Remote UE2触发BSR2,则此时Remote UE1、Remote UE2可以分别向Relay UE发送BSR1、BSR2,Relay UE接收到BSR1和BSR2后,向基站发送BSR1和BSR2,以便基站根据BSR1和BSR2为Remote UE1、Remote UE2配置合适的传输数据的资源。
如此,Remote UE可以通过Relay UE将自身触发的BSR上报给基站,不需要自己直接将BSR上报给基站,避免了自身直接上报BSR给基站时带来的功率消耗增加的问题。
可选的,在步骤101中,对于任一Remote UE而言,可以通过下述方式一~方式三中的任一种方式向Relay UE发送任一BSR:
方式一:Remote UE获取基站为Remote UE配置的控制信令资源池和数据资源池,该控制信令资源池和数据资源仅用于Remote UE传输资源请求信息,如BSR或者SR;
Remote UE从控制信令资源池中选取第一资源,采用第一资源向Relay UE发送侧行链路控制消息(英文:Sidelink Control Information,SCI);
Remote UE从数据资源池中选取第二资源,采用第二资源向
Relay UE发送媒体接入控制协议数据单元(英文:Medium Access Control Protocol Data Unit,MAC PDU),该MAC PDU包含Remote UE发送的BSR,该SCI包含用于指示第二资源的位置信息的指示信息。
其中,Remote UE获取基站为Remote UE配置的控制信令资源池和数据资源池的方式可以参照现有技术,在此不再重复赘述。可选的,Remote UE可以从控制信令资源池中选取任一资源作为第一资源,可以从数据资源池中选取任一资源作为第二资源。
如此,Remote UE可以将SCI和包含BSR的MAC PDU发送至Relay UE,以便Relay UE根据接收到的SCI,从该SCI指定的资源上接收MAC PDU,并从MAC PDU中获取Remote UE发送的BSR。
目前在LTE系统中,上下行链路的MAC PDU的格式如图3a所示,侧行链路的MAC PDU的格式如图3b所示,可以包括:媒体接入控制头(MAC Header)、多个媒体接入控制控制单元(英文:MAC Control Element,MAC CE)、以及多个媒体接入控制服务数据单元(英文:MAC Service Data Unit,MAC SDU),MAC Header可以包含多个媒体接入控制子头(MAC Subheader),其中,在MAC PDU包含的MAC Subheader中可以包含:侧行链路共享信道子头(英文:Sidelink Shared CHannel Subheader,SL-SCH Subheader)、与多个MAC CE一一对应的多个MAC Subheader、以及与多个MAC SDU一一对应的多个MAC Subheader,即一个MAC Subheader与一个MAC CE相对应,一个MAC Subheader与一个MAC SDU相对应,每个MAC Subheader中可以包含逻辑信道标识(英文:Logical Channel ID,LCID),该LCID用于指示与MAC Subheader对应的MAC CE的类型或者MAC SDU来自于哪个逻辑信道。需要说明的是,图3a和图3b仅为MAC PDU的示例性格式图,图3a和图3b中MAC Subheader、MAC CE、MAC SDU的个数仅为示例性表示,并不对本发明所述的方案构成限制,在实际应用中,可以根据实际需要,以不同于图3a和图3b所示的MAC Subheader、MAC CE、
MAC SDU的个数构建MAC PDU。
在方式一中可以将Remote UE发送的BSR作为一个MAC CE携带在图3b所示MAC PDU中,以此通过MAC PDU将BSR发送至Relay UE;其中,在方式一中,可以将作为MAC CE的BSR称为BSR MAC CE;此外,需要说明的是,MAC PDU中还可以包含其他类型的MAC CE,即MAC PDU中还可以存在其他类型信息的MAC CE,本发明实施例对此不进行限定;
为了便于Relay UE查询到BSR MAC CE,可选的,在方式一种,可以在图3b所示的多个MAC Subheader中选取一个与BSR MAC CE相对应的MAC Subheader,使该MAC Subheader包含用于指示与该MAC Subheader相对应的MAC CE为BSR MAC CE、以及该BSR MAC CE的格式的LCID。
其中,BSR MAC CE的格式可以根据BSR的类型而定,Remote UE发送的BSR可以为上行链路(Uplink)BSR也可以为侧行链路(Sidelink)BSR。当MAC CE上报的BSR为Uplink BSR时,BSR MAC CE可以分为:长(Long)BSR MAC CE、短(Short)BSR MAC CE和截短(Truncated)BSR MAC CE三种格式,其中,Long BSR MAC CE的格式如图4a所示,可以包括:每个逻辑信道组对应的缓存中的数据量(Buffer Size),每个Buffer size占用1个字节;Short BSR MAC CE和Truncated BSR MAC CE的格式如图4b所示,可以包括:逻辑信道组标识以及与该逻辑信道组对应的Buffer Size,该逻辑信道组标识和Buffer Size占用一个字节。
此外,相对应,为了支持LCID指示BSR MAC CE的格式,当MAC CE上报的BSR为Uplink BSR时,则需要定义三个新的LCID值来指示与该LCID值所在MAC Subheader相对应的MAC CE为BSR MAC CE、以及BSR MAC CE的格式。
可选的,LCID可以采用5bit来表示,即LCID值的取值范围为0~32,在方式一中,可以从目前用于Sidelink的共享信道的LCID的保留取值取出三个作为指示BSR MAC CE的格式的LCID值,例
如,如下表1所示,可以用11001来指示Truncated BSR、用11010来指示Short BSR、用11011来指示Long BSR;而LCID的其他取值的指示作用仍与现有相同。
表1
当MAC CE上报的BSR为Sidelink BSR时,BSR MAC CE可以分为:Truncated Sidelink BSR和Sidelink BSR二种格式,相对应,则需要定义二个新的LCID值来指示与该LCID值所在MAC Subheader相对应的MAC CE为BSR MAC CE、以及BSR MAC CE的格式;其中,Truncated Sidelink BSR和Sidelink BSR的格式如图4c和图4d所示,可以包括:目的端索引(Destination Index)、与该目的端对应的逻辑信道组标识、以及与该逻辑信道组标识对应的逻辑信道组的Buffer Size,其中,目的端索引用于表示为与Remote UE连接的Relay UE,当存在与Remote UE连接的N个Relay UE时,则图4c和图4d所示格式中则包含N组目的端索引(Destination Index)、与该目的端对应的逻辑信道组标识、以及与该逻辑信道组标识对应的逻辑信道组的Buffer Size;可选的,当N为偶数时,
Truncated Sidelink BSR和Sidelink BSR的格式如图4c所示,当N为奇数时,Truncated Sidelink BSR和Sidelink BSR的格式如图4d所示,会存在多个预留(R)比特。
相对应,为了支持LCID指示BSR MAC CE的格式,当MAC CE上报的BSR为Sidelink BSR时,可选的,可以从目前LCID的保留字段取出二个作为指示BSR MAC CE的格式的LCID值,例如,如下表2所示,可以用11010来指示Truncated Sidelink BSR、用11011来指示Sidelink BSR;而LCID的其他取值的指示作用仍与现有相同,在此不再重复赘述。
表2
例如,若Remote UE1向Relay UE发送Uplink BSR,且该BSR为Long BSR,则Remote UE1可以将MAC Subheader1作为SL-SCH Subheader,将Remote UE1发送的BSR1填充在MAC CE中作为BSR MAC CE中,在MAC Subheader2内填充值为11011的LCID,指示与MAC Subheader2对应的MAC CE的格式为:Long BSR,在MAC Subheader3内填充值为11111的LCID,指示与MAC Subheader3对应的MAC SDU为空白填充。
方式二:Remote UE获取基站为Remote UE配置的控制信令资源池,控制信令资源池仅用于Remote UE传输资源请求信息,如BSR或者SR;Remote UE从控制信令资源池中选取第三资源,采用第三资源向Relay UE发送包含BSR的SCI,该第三资源为控制信令资源池中的任一资源。
如此,Remote UE可以将BSR携带在SCI中发送至Relay UE,以便Relay UE从SCI中获取Remote UE发送的BSR。
在方式二中,当采用SCI来传输BSR时,SCI有下述1)和2)所述的两种可能格式(format):
1)重新定义一种新的SCI format,该SCI可以包括下述信息中的一种或多种:Remote UE索引(Index)、目的端层2标识(Destination Layer 2ID)、Buffer size、BSR Type;
其中,Remote UE Index为Remote UE与Relay UE连接时的唯一标识,其中,表示Remote UE Index的比特数的多少取决于Relay UE下可以连接的最大的Remote UE的数目。例如:Relay UE最多可连接4个Remote UE,则可以采用2bit来表示Remote UE Index。
Destination Layer 2ID为Remote UE所连接的Relay UE的(ProSe)UE ID,可以用24bits来表示。
Buffer size为Remote UE的缓存中的数据量,可以用24bits来表示。
BSR Type用于指示BSR为Long BSR、或者Short BSR、或者Truncated BSR,可以用2bits或1bit来表示。
2)重用现有的SCI format,将SCI format0中某些字段的值设置为特殊值,如将SCI format0中原有用于指示跳频(Frequency hopping)的长度为1bit的字段的取值设置为0或1,将SCI format0中原有用于指示资源块分配(Resource block assignment)的字段对应的所有比特的值设置为0或1,并用新的字段取代目前已有的字段,使更新后的SCI(如下表3所示的SCI format)可以包括下述信息中的一种或多种:Remote UE Index、Buffer size、BSR Type;其
中,Remote UE Index、Buffer size、BSR Type的定义如1)中所述,在此不再重复赘述。
需要说明的是,在2)所述情况下,需要基站为每个Relay UE分配专用的用于接收SCI的资源池,只有该Relay UE下的Remote UE可以用该资源池中的资源来发送SCI。
表3
Field | Number of bits |
Frequency hopping | 1bit and set to 0或1 |
Resource block assignment | All bits are set to 0或1 |
Remote UE index | 4bits |
Buffer size | 24bits |
BSR type | 2bits/或1bits |
方式三:Remote UE接收基站分配的SL grant;
Remote UE通过SL grant指示的资源向Relay UE发送包含BSR的MAC PDU。
如此,Remote UE可以将SCI和包含BSR的MAC PDU发送至Relay UE,以便Relay UE根据接收到的SCI,从该SCI指定的资源上接收MAC PDU,并从MAC PDU中获取Remote UE发送的BSR。
在方式三中,MAC PDU的格式可以如方式一中所述,在此不再重复赘述,唯一不同的是,方式一中MAC PDU可以包含携带有数据的MAC SDU,也可以不包含携带有数据的MAC SDU,而方式三中当Remote UE与Relay UE间通过基站分配的SL grant所指示的资源传输SL数据时,则MAC SDU内会包含携带有数据的MAC SDU。
可选的,在方式三种,Remote UE可以采用下述方式接收基站分配的SL grant:
Remote UE有数据传输需求时,自身触发调度请求(英文:
Scheduling Request,SR),并向Relay UE发送该SR,该调度请求用于向基站请求分配SL grant。
示例性的,在上述过程中,Remote UE可以下述方式向Relay UE发送SR:
Remote UE获取基站为Remote UE配置的控制信令资源池,该控制信令资源池仅用于Remote UE传输调度请求;
Remote UE从控制信令资源池中选取第四资源,采用第四资源向Relay UE发送包含SR的SCI,该第四资源可以为控制信令资源池中的任一资源。
其中,携带SR的SCI可以包含:Remote UE Index、Destination Layer 2ID中的一种或多种信息;Remote UE Index、Destination Layer 2ID的定义如1)中所述,在此不再重复赘述。
可选的,在步骤102中,Relay UE可以通过下述方式(1)或方式(2)中的任一种方式向基站发送接收到的至少一个Remote UE发送的至少一个BSR:
方式(1):Relay UE对至少一个BSR进行组合处理,生成一个Relay BSR,该Relay BSR包含所有Remote UE发送的BSR;
Relay UE获取基站分配的UL grant;
Relay UE通过基站分配的UL grant所指示的资源,向基站发送携带有该Relay BSR的MAC PDU。
示例性的,Relay UE可以通过下述方式获取基站分配的UL grant:Relay UE有数据传输需求,触发用于向基站请求分配UL grant的SR,并向基站发送该SR。
如此,Relay UE可以将多个BSR组合在一起包含在MAC PDU内发送至基站,以便基站根据接收到的BSR,为每个Remote UE分配SL grant。
在方式(1)中,MAC PDU可以包括:MAC Header、多个MAC CE、以及MAC SDU,MAC Header可以包含多个MAC Subheader;
其中,将Relay BSR作为一个MAC CE携带在MAC PDU中,
以此通过MAC PDU将Relay BSR发送至基站;需要说明的是,在方式(1)中可以将作为一个MAC CE的Relay BSR称之为Relay BSR MAC CE,此外,多个MAC Subheader中包含一个与Relay BSR MAC CE相对应的MAC Subheader,该MAC Subheader包含用于指示与该MAC Subheader相对应的MAC CE为Relay BSR MAC CE的LCID。
可选的,为了支持LCID指示Relay BSR MAC CE,可以从目前上行链路共享信道的LCID的预留取值中取出一个作为指示Relay BSR MAC CE的LCID值,例如,如下表4所示,可以用10101来指示包含Relay BSR的MAC CE;而LCID的其他取值的指示作用仍与现有相同,在此不再重复赘述。
表4
具体的,为了便于基站区分出Relay BSR MAC CE中包含哪个
Remote UE发送的BSR,在方式(1)中Relay BSR MAC CE的格式可以采用下述设计方案:Relayed BSR MAC CE可以包含与至少一个Remote UE一一对应的至少一组BSR信息,即一个Remote UE对应一组BSR信息;每组BSR信息可以包含下述一种或多种信息:Remote UE index、BSR type、逻辑信道组个数(英文:Logical Channel Group Number,LCG Number)、逻辑信道组标识(英文:Logical Channel Group identification,LCG ID)、以及Buffer Size;
其中,每组BSR信息中的Remote UE index为:与该组信息对应的Remote UE与Relay UE连接时的唯一标识;
BSR type用来通知基站该组信息对应的Remote UE的上报的BSR的类型,如:可以为Long BSR、Short BSR、Truncated BSR中的一种,或者Truncated sidelink BSR、Sidelink BSR中的一种;
LCG Number用来指示与该组信息对应的Remote UE上报了buffer size的LCG的数目;
LCG ID用来标识与该组信息对应的Remote UE的Logical channel group;
Buffer Size为相应的LCG ID所对应的buffer中的数据量。
示例性的,在方式(1)中Relay BSR MAC CE的一种可实现格式为:Relayed BSR MAC CE包含与至少一个Remote UE一一对应的至少一组BSR信息,每组BSR信息包含下述信息:Remote UE index、BSR type、LCG Number、LCG ID、以及Buffer Size。
例如,如图5a所示,Relay UE同时接收到Remote UE1发送的BSR1、以及Remote UE2发送的BSR2,且BSR1作为LCID1指示的BSR MAC CE1,BSR2作为LCID2指示的BSR MAC CE2,Remote UE1的索引为Remote UE Index1(简称:RUE Index1),Remote UE2的索引为Remote UE Index2(简称:RUE Index2),Relay UE收到BSR1和BSR2,将BSR1和BSR2组合在一起作为Relay BSR放在一个MAC CE中,即Relay BSR MAC CE中,同时,用MAC PDU中的一个MAC subheader中的LCID来指示该Relay BSR MAC CE。
示例性的,在方式(1)中Relay BSR MAC CE的另一种可实现格式为:Relayed BSR MAC CE包含与至少一个Remote UE一一对应的至少一组BSR信息,每组BSR信息包含下述信息:Remote UE index、BSR type、LCG ID、以及Buffer Size;
例如,如图5b所示,Relay UE将同时接收到的Remote UE1发送的BSR1、以及Remote UE2发送的BSR2在一起作为Relay BSR放在一个MAC CE中,即Relay BSR MAC CE中向基站发送,同时,用MAC PDU中的一个MAC subheader中的LCID来指示该Relay BSR MAC CE。
方式(2):Relay UE对至少一个BSR分别进行处理,生成至少一个Relay BSR,至少一个Relay BSR与Remote UE一一对应;
Relay UE获取所述基站分配的UL grant;
Relay UE根据基站分配的UL grant所指示的资源,向基站发送携带有至少一个Relay BSR的MAC PDU。
示例性的,Relay UE可以通过下述方式获取基站分配的UL grant:当需要发送Relay BSR而Relay UE没有UL grant时,触发用于向基站请求分配UL grant的SR,并向基站发送该SR。
可选的,在方式(2)中,可以将Relay UE作为MAC CE携带在方案(2.1)~方案(2.5)中任一方案所述的MAC PDU中向基站发送:
方案(2.1):该MAC PDU可以包括:MAC Header、至少一个MAC CE;该至少一个MAC CE可以与至少一个Relay BSR一一对应,至少一个MAC CE中的每个MAC CE用于携带与其对应的Relay BSR,其中,携带有Relay BSR的MAC CE可称为Relay BSR MAC CE;同时,MAC Header可以包含与至少一个Relay BSR MAC CE一一对应的至少一个MAC Subheader,至少一个MAC Subheader中每个MAC Subheader包含LCID,且每个MAC Subheader包含的LCID用于指示与该MAC Subheader对应的Relay BSR MAC CE、以及Relay BSR MAC CE的格式。
其中,在方案(2.1)中,Relay BSR MAC CE的格式可以为:Long BSR MAC CE、Short BSR MAC CE、Truncated BSR MAC CE三种格式;Long BSR MAC CE为携带有Long BSR的MAC CE,Short BSR MAC CE为携带有Short BSR的MAC CE,Truncated BSR MAC CE为携带有Truncated BSR的MAC CE。
在方案(2.1)中,的Relay BSR MAC CE可以包含:与该Relay BSR MAC CE相对应的Remote UE Index、Remote UE上报的BSR中包含的LCG ID、Remote UE上报的BSR中每个逻辑信道群组对应的Buffer Size中的一种或多种信息。
例如,如图6a所示,Remote UE1向Relay BSR发送BSR1,该BSR1用于向基站指示LCG ID1~LCG IDN所表示的LCG ID上的Buffer Size,Relay UE接收到Remote UE1发送的BSR1后,将该BSR1处理变为Relay BSR,并将处理后的Relay BSR放在MAC PDU的一个MAC CE中,即Relay BSR MAC CE中向基站发送,同时,用MAC PDU中的一个MAC subheader中的LCID来指示该Relay BSR MAC CE,且该Relay BSR MAC CE包含:Remote UE Index1、LCG ID1~LCG IDN、以及与每个LCG ID相对应的Buffer Size。
方案(2.2):该MAC PDU可以包括:MAC Header、至少一个MAC CE,至少一个MAC CE与至少一个Remote UE一一对应,至少一个MAC CE中每个MAC CE内可以包含与MAC CE相对应的Remote UE的Relay BSR,其中,在该方案中,包含Relay BSR的MAC CE可以称之为Relay BSR MAC CE;
为了指示Remote UE、以及包含Remote UE的Relay BSR的MAC CE,可选的,在方案(2.2)中,对于至少一个Remote UE的任一Remote UE,如:第一Remote UE,MAC Header内可以包含:至少一个MAC Subheader,该至少一个MAC Subheader可以包含与第一Remote UE相对应的两个MAC Subheader,用这两个MAC Subheader包含的信息指示第一Remote UE、以及包含第一Remote UE的Relay BSR的MAC CE,具体实现如下:
一个MAC Subheader可以包含:第一Remote UE的Index;
另一个MAC Subheader可以包含LCID,该MAC Subheader包含的LCID用于指示与第一Remote UE相对应的MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式。
可以理解的是,第一Remote UE的MAC CE的个数较多时,则存在与该MAC CE相对应的多个MAC Subheader,不局限于上述两个MAC Subheader。
即由上可知,在方案(2.2)中,将至少一个Remote UE对应的至少一个Relay BSR分别作为至少一个MAC CE携带在MAC PDU中发往基站,同时,在MAC Subheader中存在与同一Remote UE相对应的多个MAC Subheader,通过与同一Remote UE相对应的多个MAC Subheader来指示该Remote UE、以及包含该Remote UE的Relay BSR的MAC CE。
例如,如图6b所示,若Relay UE同时接收到的Remote UE1发送的BSR1、Remote UE2发送的BSR2,则Relay UE将同时接收到的Remote UE1发送的BSR1、以及Remote UE2发送的BSR2分别填充到MAC CE1、MAC CE2中,并在MAC PDU中的MAC Subheader1中填充Remote UE1的索引:Remote UE Index1,在MAC Subheader2中填充用于指示MAC CE1为Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID1,在MAC Subheader3中填充Remote UE2的索引:Remote UE Index2,在MAC Subheader4中填充用于指示MAC CE2为Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID2。
需要说明的是,在方案(2.2)中,如图6b所示,填充Remote UE Index的MAC Subheader除包含Remote UE Index之外,还可以包含其他比特,如:Tbit、预留(R)bit,其中,Tbit的取值可以用于指示与该MAC Subheader相邻的下一MAC Subheader是新定义的包含Remote UE Index的Subheader,还是类似于目前上下行链路上的MAC PDU中定义的包含LCID的Subheader。此外,如图6b所示,
该MAC PDU还可以包括:MAC SDU、以及空白填充(Padding),MAC Header还可以包括与MAC SDU相对应的MAC Subheader、以及与Padding相对应的Padding Subheader,本发明实施例对此不进行限定。
另外,目前在包含LCID的MAC Subheader中有两个预留比特。其中一个预留比特可以用于指示与该MAC Subheader相邻的下一MAC Subheader是新定义的包含Remote UE Index的Subheader,还是类似于目前上下行链路上的MAC PDU中定义的包含LCID的Subheader。
方案(2.3):该MAC PDU可以包括:MAC Header、至少一MAC CE,MAC Header包含:至少一个MAC Subheader;
对于至少一个Remote UE的任一Remote UE,如:第二Remote UE而言,该至少一MAC CE中可以包含与第二Remote UE相对应的两个MAC CE:一个MAC CE可以包含第二Remote UE的Index,另一个MAC CE可以包含与第二Remote UE对应的Relay BSR。
为了指示包含第二Remote UE的索引的MAC CE、以及包含Remote UE的Relay BSR的MAC CE,相对应的,该至少一个MAC Subheader中可以与该第二Remote UE相对应的两个MAC Subheader:一个用包含用于指示MAC CE中包含第二Remote UE的Index的LCID,另一个包含用于指示MAC CE为与第二Remote UE对应的Relay BSR的Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID。
即由上可知,在方案(2.3)中,对于任意Remote UE而言,将该Remote UE的索引、以及该Remote UE的Relay BSR作为MAC CE携带在MAC PDU中发往基站,同时,在MAC Subheader中存在与该Remote UE相对应的多个MAC Subheader,通过多个MAC Subheader中包含LCID的MAC Subheader来指示该包含Remote UE的索引的MAC CE,通过多个MAC Subheader中包含LCID的另一MAC Subheader来指示包含该Remote UE的Relay BSR的MAC CE。
例如,如图6c所示,若Relay UE同时接收到的Remote UE1发送的BSR1、Remote UE2发送的BSR2,则Relay UE将同时接收到的Remote UE1发送的BSR1、Remote UE2发送的BSR2、Remote UE1的索引、以及Remote UE2的索引分别填充到MAC CE1、MAC CE2、MAC CE3、MAC CE4中,并在MAC PDU中的MAC Subheader1中填充用于指示MAC CE1为包含Remote UE1的索引的LCID1,在MAC Subheader2中填充用于指示MAC CE2为包含Remote UE1发送的BSR1的Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID2,在MAC Subheader3中填充用于指示MAC CE3为包含Remote UE2的索引的LCID3,在MAC Subheader4中填充用于指示MAC CE4为包含Remote UE2发送的BSR2的Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID4。
需要说明的是,在方案(2.3)中,如图6c所示,填充Remote UE Index的MAC CE除包含Remote UE Index之外,还可以包含其他比特,如:预留(R)bit。此外,如图6c所示,该MAC PDU还可以包括:MAC SDU、以及空白填充(Padding),MAC Header还可以包括与MAC SDU相对应的MAC Subheader、以及与Padding相对应的Padding Subheader,本发明实施例对此不进行限定。
方案(2.4)该MAC PDU可以包括:MAC Header、至少一个MAC CE;至少一个MAC CE与至少一个Remote UE一一对应,至少一个MAC CE中每个MAC CE内可以包含与MAC CE相对应的Remote UE的Relay BSR,其中,在该方案中,包含Relay BSR的MAC CE可以称之为Relay BSR MAC CE;
为了指示哪些Remote UE对应有Relay BSR、以及包含Remote UE的Relay BSR的MAC CE,在方案(2.4)中,该MAC Header可以包含:一个包含比特图(bitmap)的Subheader、以及与至少一个Relay BSR MAC CE一一对应的至少一个MAC Subheader;
其中,MAC Subheader包含的bitmap中包含与至少一个Remote UE一一对应的至少一个比特位,每个比特位用于指示当前的MAC
PDU中是否包含与该比特位对应的Remote UE的MAC SDU和/或BSR MAC CE BSR,例如,如果当前MAC PDU中包含索引值为n的remote UE的MAC SDU和/或BSR MAC CE,那么其对应的bitmap中的bit位n的值设为1,否则,其对应的bitmap中的比特位n的值设为0,或者1和0表示的意思相反。另外,bitmap中的bit位0可以用于表示当前的MAC PDU中是否包含RelayUE自己的MAC SDU和/或BSR MAC CE。;bitmap中比特位的确定方式例如可以为第一字节的最左边的bit的bit位为0,依次往右为1,2,…7。第二个字节的最左边的bit的bit为8,依次类推。Bitmap中的bit位的个数取决于Relay UE下可以连接的最大的Remote UE的数目,例如可以为16bit。
与至少一个Relay BSR MAC CE一一对应的至少一个MAC Subheader中,每个MAC Subheader包含用于指示其所对应的MAC CE为Relay BSR MAC CE,以及Relay BSR MAC CE的格式。
即由上可知,在方案(2.4)中,将至少一个Remote UE的Relay BSR分别作为至少一个MAC CE携带在MAC PDU中发往基站,同时,通过MAC Subheader中包含bitmap的MAC Subheader指示该MAC PDU中携带有哪些Remote UE的Relay BSR、以及通过包含有LCID的MAC Subheader来指示携带有Relay BSR的Relay BSR MAC CE。
例如,如图6d所示,若Relay UE同时接收到的Remote UE1发送的BSR1、Remote UE2发送的BSR2,则Relay UE将同时接收到的Remote UE1发送的BSR1、Remote UE2发送的BSR2分别填充到MAC CE1、MAC CE2中,同时,在MAC Subheader1内的bitmap中与该Remote UE1、Remote UE2对应的位置分别填充1,其他部分填充0,在MAC Subheader2中填充用于指示MAC CE1为包含Remote UE1发送的BSR1的Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID1,在MAC Subheader3中填充用于指示MAC CE2为包含Remote UE2发送的BSR2的Relay BSR MAC CE、以及
Relay BSR MAC CE的格式的LCID2。
需要说明的是,在方案(2.4)中,如图6d所示,该MAC PDU还可以包括:MAC SDU、以及空白填充(Padding),MAC Header还可以包括与MAC SDU相对应的MAC Subheader、以及与Padding相对应的Padding Subheader,本发明实施例对此不进行限定。
方案(2.5)该MAC PDU可以包括:MAC Header、至少一个MAC CE,该至少一个MAC CE可以包含:一个包含比特图(bitmap)的MAC CE、以及与至少一个Remote UE一一对应的至少一个MAC CE,该至少一个MAC CE中的每个MAC CE用于携带与该MAC CE对应的Remote UE的Relay BSR;其中,在该方案中,包含Relay BSR的MAC CE可以称之为Relay BSR MAC CE;
其中,MAC CE中的bitmap包含与至少一个Remote UE一一对应的至少一个比特位,每个比特位用于指示当前的MAC PDU中是否包含与该比特位对应的Remote UE的MAC SDU和/或BSR MAC CE BSR,例如,如果当前MAC PDU中包含索引值为n的remote UE的MAC SDU和/或BSR MAC CE,那么其对应的bitmap中的bit位n的值设为1,否则,其对应的bitmap中的比特位n的值设为0,或者1和0表示的意思相反。另外,bitmap中的bit位0可以用于表示当前的MAC PDU中是否包含RelayUE自己的MAC SDU和/或BSR MAC CE。;bitmap中比特位的确定方式例如可以为第一字节的最左边的bit的bit位为0,依次往右为1,2,…7。第二个字节的最左边的bit的bit位为8,依次类推。Bitmap中的bit位的个数取决于Relay UE下可以连接的最大的Remote UE的数目,例如可以为16bit;
为了指示携带bitmap的MAC CE、以及包含Remote UE的Relay BSR的MAC CE,在方案(2.5)中,该MAC Header可以包含:一个包含LCID的MAC Subheader,该MAC Subheader包含的LCID用于指示包含bitmap的MAC CE;以及,与至少一个与Relay BSR MAC CE一一对应的MAC Subheader,与至少一个与Relay BSR MAC
CE一一对应的MAC Subheader中的每个MAC Subheader包含用于指示其所对应的MAC CE为Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID。
即由上可知,在方案(2.5)中,通过包含bitmap的MAC CE指示该MAC PDU中携带有哪些Remote UE的Relay BSR,并将至少一个Remote UE的Relay BSR分别作为至少一个MAC CE携带在MAC PDU中发往基站,同时,通过包含有LCID的MAC Subheader来指示Relay BSR MAC CE。
例如,如图6e所示,若Relay UE同时接收到的Remote UE1发送的BSR1、Remote UE2发送的BSR2,则Relay UE在MAC CE1内的bitmap中与该Remote UE1、Remote UE2对应的位置分别填充1,其他部分填充0,并将接收到的Remote UE1发送的BSR1、Remote UE2发送的BSR2分别填充到MAC CE2、MAC CE3中,同时,在MAC Subheader1中填充用于指示MAC CE1为包含bitmap的MAC CE的LCID1,在MAC Subheader2中填充用于指示MAC CE2为包含Remote UE1发送的BSR1的Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID2,在MAC Subheader3中填充用于指示MAC CE2为包含Remote UE2发送的BSR2的Relay BSR MAC CE、以及Relay BSR MAC CE的格式的LCID3。
需要说明的是,在方案(2.5)中,如图6e所示,该MAC PDU还可以包括:MAC SDU、以及空白填充(Padding),MAC Header还可以包括与MAC SDU相对应的MAC Subheader、以及与Padding相对应的Padding Subheader,本发明实施例对此不进行限定。
此外,在上述方案(2.2)~(2.5)中,Relay BSR MAC CE可以包含:与Relay BSR MAC CE对应的Remote UE上报的BSR中包含的逻辑信道组的标识、Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息。
Relay BSR MAC CE的格式包括:Long BSR MAC CE、Short BSR MAC CE、Truncated BSR MAC CE三种格式。
进一步可选的,在Relay UE收到UL grant,在进行逻辑信道优先级处理时,对于目前已有的Uplink BSR MAC CE(BSR)、Sidelink BSR MAC CE(SL BSR MACCE)、以及对接收到Remote UE发送的BSR处理后生成的Relay BSR MAC CE,可以按照下述优先级顺序处理这些BSR,具体实现如下:
Relay UE在获取基站分配的UL grant之后,按照下述任意一种优先级顺序处理UL BSR MAC CE、SL BSR MAC CE、Relay BSR MAC CE:
UL BSR MAC CE>SL BSR MAC CE=Relay BSR MAC CE;
UL BSR MAC CE=Relay BSR MAC CE>SL BSR MAC CE;
UL BSR MAC CE>SL BSR MAC CE>Relay BSR MAC CE;
UL BSR MAC CE>Relay BSR MAC CE>SL BSR MAC CE。
上述UL BSR MAC CE和SL BSRMAC CE不包括Padding BSR。Padding BSR的优先级低于上述三种BSR MAC CE
需要说明的是,在本发明实施例中,若Relay UE的缓存中存在Relay UE需要发送给基站的待传输数据,则此时该Relay UE触发的BSR为UL BSR,若Relay UE的缓存中存在Relay UE需要发送给Remote UE的待传输数据,则此时该Relay UE触发的BSR为SL BSR。
由上可知,在图3所示的技术方案中,Remote UE基于基站配置下述资源:控制信令资源池和数据资源池、或者控制信令资源池、或者SL grant向Relay UE发送BSR,可替代的,在本发明的又一可行性方案中,Remote UE也可以在预先没有基站配置的上述资源(如没有可用的SL grant)的情况下,通过Relay UE向基站发送SR以获取基站配置的SL grant资源,通过基站配置的SL grant资源向Relay UE发送BSR,具体的,该可行性方案如图7所示。
图7为本发明实施例提供的又一种资源请求方法的流程图,该方法由图1或图2所示的设备交互执行,该方法可以应用于:当Remote UE需要在Remote UE与Relay UE间的Sidelink上进行数据
传输进行数据传输时,Remote UE触发上报BSR,若此时Remote UE没有可用的SL grant,Remote UE进一步触发SR,并通过RelayUE将该SR传送给基站,以便基站根据Remote UE上报的SR为Remote UE分配传输数据的资源,如图7所示,该方法可以包括以下步骤:
201:至少一个Remote UE向Relay UE发送至少一个SR。
其中,上述Remote UE可以为与Relay UE连接的Remote UE,通过Relay UE与基站或网络进行通信,SR用于向基站提示该Remote UE的缓存中有数据要传输,以便基站为Remote UE分配SL grant。需要说明的是,一个Remote UE可以向Relay UE发送一个SR,也可以向Relay UE发送多个SR,本发明实施例对此不进行限定。
可选的,对于任意Remote UE而言,可以采用下述方式向Relay UE发送至少一个SR;
Remote UE获取基站为Remote UE配置的控制信令资源池,该控制信令资源池仅用于Remote UE传输调度请求;
Remote UE从控制信令资源池中选取第四资源,采用第四资源向Relay UE发送包含SR的SCI,该第四资源可以为控制信令资源池中的任一资源。
其中,当采用SCI来传输SR时,可以重新定义一种新的SCI format,该SCI可以包括下述信息中的一种或多种:Remote UE Index、Destination Layer 2ID;其中,Remote UE Index、Destination Layer 2ID与图3所示方案中的定义相同,在此不再重复赘述。
或者,重用现有的SCI format,将SCI format0中某些字段的值设置为特殊值,如将SCI format0中原有用于指示跳频(Frequency hopping)的字段的1bit的值设置为0或1,将SCI format0中原有用于指示资源块分配(Resource block assignment)的字段所有bit设置为0或1,并用新的字段取代目前已有的字段,使更新后的SCI(如下表5所示的SCI format)可以包括下述信息中的一种或多种:Remote UE Index、Destination Layer 2ID。
表5
Field | Number of bits |
Frequency hopping | 1bit and set to 0或1 |
Resource block assignment | All bits are set to 0或1 |
Remote UE index | 4bits |
Destination Layer 2ID | 24bits |
202:Relay UE接收至少一个SR,对至少一个SR进行处理,生成至少一个Relay SR,并向基站发送该至少一个Relay SR。
可选的,Relay UE可以通过下述方式a~方式c中的任一种方式向基站发送该至少一个Relay SR:
方式a:Relay UE获取基站分配的至少一份物理上行控制信道资源,至少一份物理上行控制信道资源与至少一个Remote UE一一对应,每份上行控制信道资源用于在上行链路传输与其对应的Remote UE的SR;
Relay UE对至少一个SR分别进行处理,生成至少一个Relay SR,并在基站分配的至少一份物理上行控制信道资源上向基站发送至少一个Relay SR,其中,至少一个Relay SR与至少一个Remote UE一一对应。
方式b:Relay UE对至少一个SR进行组合处理,生成一个Relay SR;
Relay UE获取基站分配的UL grant;
Relay UE通过UL grant所指示的资源,向基站发送携带有Relay SR的MAC PDU。
Relay UE生成Relay SR后,若当前没有可用的UL grant,则Relay UE触发一个UL SR,并发送该UL SR给基站来请求基站分配UL grant。
其中,该MAC PDU可以包括:MAC Header、MAC CE,MAC
Header包含MAC Subheader,MAC CE包含Relay SR;MAC Subheader包含LCID,MAC Subheader包含的LCID用于指示MAC CE为Relay SR MAC CE;Relay SR MAC CE包含bitmap,bitmap包含与至少一个Remote UE一一对应的至少一个比特位,每个比特位用于指示该比特位对应的Remote UE是否上报SR,例如,如果索引值为n的Remote UE上报了SR,那么,其对应的bitmap中的比特位n的值设为0;否则,其对应的bitmap中的比特位n的值设为0,或者1和0表示的意思相反。bitmap中比特位的确定方式例如可以为第一字节的最左边的bit的bit位为0,依次往右为1,2,…7。第二个字节的最左边的bit的bit为8,依次类推。Bitmap中的bit位的个数取决于Relay UE下可以连接的最大的Remote UE的数目,例如可以为16bit
例如,如图8a所示,若Relay UE同时接收到的Remote UE1发送的SR1、Remote UE2发送的SR2,则Relay UE将SR1和SR2合并为一个Relay SR,将该Relay SR填充到MAC CE中,同时,在MAC Suheader1中填充用于指示MAC CE为包含Relay SR的MAC CE的LCID。
可选的,为了支持LCID指示Relay SR MAC CE,可以从目前上行共享信道的LCID的预留值中取出一个作为指示Relay SR MAC CE的LCID值,例如,如下表6所示,可以用10101来指示包含Relay SR的MAC CE;而LCID的其他取值的指示作用仍与现有相同,在此不再重复赘述。
表6
方式c:Relay UE对至少一个SR分别进行处理,生成至少一个中继调度请求Relay SR,至少一个Relay SR与至少一个Remote UE一一对应;
Relay UE获取基站分配的UL grant;
Relay UE根据UL grant所指示的资源,向基站发送携带有至少一个Relay SR的MAC PDU。
Relay UE生成Relay SR后,若当前没有可用的UL grant,则Relay UE触发一个UL SR,并发送该UL SR给基站来请求基站分配UL grant。
其中,MAC PDU包括MAC Header;MAC Header包含至少一个MAC Subheader,至少一个MAC Subheader与至少一个Remote UE
一一对应;每个MAC Subheader包含与其对应的Remote UE的索引、以及用于指示与其相邻的下一MAC Subheader的类型的指示信息。
如图8b所示,若Relay UE同时接收到的Remote UE1发送的SR1、Remote UE2发送的SR2,则Relay UE在MAC Suheader1中填充Remote UE1的索引,在MAC Suheader2中填充Remote UE2的索引。此外,填充Remote UE Index的MAC Subheader除包含Remote UE Index之外,还可以包含其他比特,如:Tbit、预留(R)bit,其中,Tbit的取值可以用于指示与该MAC Subheader相邻的下一MAC Subheader是新定义的包含Remote UE Index的Subheader或者包含新定义的LCID的Subheader,还是原有系统定义的Subheader。
另外,目前在包含LCID的MAC Subheader中有两个预留比特。其中一个预留比特可以用于指示与该MAC Subheader相邻的下一MAC Subheader是新定义的包含Remote UE Index的Subheader,还是类似于目前上下行链路上的MAC PDU中定义的包含LCID的Subheader。
203:基站根据至少一个Relay SR为至少一个Remote UE分配SL grant。
其中,基站根据至少一个Relay SR为至少一个Remote UE分配SL grant的过程可以参照现有技术,在此不再重复赘述。
204:至少一个Remote UE通过基站分配的SL grant所指示的资源,向Relay UE发送至少一个BSR。
其中,对于任意Remote UE而言,通过基站分配的SL grant所指示的资源,向Relay UE发送至少一个BSR的方式可以参照图3所示方案中的方式一~方式三,在此不再重复赘述。
205:Relay UE接收至少一个BSR,对至少一个BSR进行处理,生成至少一个Relay BSR,并向基站发送该至少一个Relay BSR。
其中,步骤205Relay UE向基站发送该至少一个Relay BSR的方式可以参照图3所示方案中的方式(1)和方式(2),在此不再重复赘述。
进一步可选的,在Relay UE收到UL grant,在进行逻辑信道优先级处理时,对于目前已有的Uplink BSR MAC CE(UL BSR)、Sidelink BSR MAC CE(SL BSR)、以及对接收到Remote UE发送的SR处理后生成的Relay SR MAC CE,可以按照下述优先级顺序进行处理,具体实现如下:
Relay UE在获取基站分配的UL grant之后,按照下述任意一种优先级顺序对UL BSR MAC CE、SL BSR MAC CE、Relay SR MAC CE进行处理:
UL BSR MAC CE>SL BSR MAC CE=Relay SR MAC CE;
Relay SR MAC CE>UL BSR MAC CE>SL BSR MAC CE;
UL BSR MAC CE>Relay SR MAC CE>SL BSR MAC CE。
上述主要以Remote UE、Relay UE、以及基站交互的角度对本发明实施例提供的资源请求方法进行了介绍。可以理解的是,Remote UE、Relay UE、以及基站为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
本发明实施例可以根据上述方法示例、结合附图对Remote UE、Relay UE、以及基站进行功能模块的划分,例如,可以对应各个功能划分各个功能模块,也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。需要说明的是,本发明实施例中对模块的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。
在采用对应各个功能划分各个功能模块的情况下,图9为本发
明实施例中所涉及的Remote UE的一种可能的结构示意图,如图9所示,Remote UE30可以用于实施上述图3或图7所示方法实施例中Remote UE所执行的方法,该Remote UE30可以包括:触发单元101、发送单元102、接收单元103;如:触发单元101用于支持Remote UE30执行图3或图7中触发BSR的动作,发送单元102用于支持Remote UE30执行图3或图7中向Relay UE发送BSR或者SR的动作,接收单元103用于支持Remote UE30执行图3或图7中接收基站配置的SL grant或者UL grant的动作。
其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再重复赘述。
在采用集成的单元的情况下,需要说明的是,图9所示的触发单元101可以集成在图2所示处理器3012中,使处理器3012执行触发单元101的具体功能,发送单元102、接收单元103可以集成在图2所示的通信接口3011中,使通信接口3011执行发送单元102、接收单元103的具体功能。
在采用对应各个功能划分各个功能模块的情况下,图10为本发明实施例中所涉及的Relay UE的一种可能的结构示意图,如图9所示,Relay UE20可以用于实施上述图3或图7所示方法实施例中Relay UE所执行的方法,该Relay UE20可以包括:接收单元201、生成单元202、发送单元203;如:接收单元201用于支持Remote UE30执行图3或图7中接收Remote UE发送的BSR或者SR的动作,生成单元202支持Relay UE20执行图3或图7中处理BSR或者SR的动作,发送单元102用于支持Relay UE20执行图3或图7中向基站发送BSR或者SR的动作。
其中,上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述,在此不再重复赘述。
在采用集成的单元的情况下,需要说明的是,图10所示的生成单元202可以集成在图2所示处理器2012中,使处理器2012执行生成单元202的具体功能,接收单元201、发送单元203可以集成
在图2所示的通信接口2011中,使通信接口2011执行接收单元201、发送单元203的具体功能。
再一方面,本发明实施例还提供一种资源请求系统,该资源请求系统可以包括:上述任一实施例所述的Remote UE30、Relay UE20、以及基站。
本发明实施例提供的资源请求系统,实现上述图3或图7所示的资源请求方法,因此,可以达到与上述资源请求系统相同的有益效果,此处不再重复赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统,装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络设备上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个功能单元独立存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元,可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例所述方法的部分
步骤。而前述的存储介质包括:通用串行总线(英文:Universal Serial Bus,USB)闪存驱动器(英文:USB flash drive)、移动硬盘、只读存储器(英文:read-only memory,ROM)、随机存取存储器(英文:random access memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案脱离权利要求的范围。
Claims (43)
- 一种资源请求方法,其特征在于,所述方法包括:远端用户设备Remote UE触发缓存状态报告BSR;所述Remote UE向中继用户设备Relay UE发送所述BSR,所述BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量。
- 根据权利要求1所述的方法,其特征在于,在所述Remote UE向Relay UE发送所述BSR,所述方法还包括:所述Remote UE获取所述基站为所述Remote UE配置的控制信令资源池和数据资源池,所述控制信令资源池和所述数据资源用于所述Remote UE传输资源请求信息;所述Remote UE向Relay UE发送BSR,包括:所述Remote UE从所述控制信令资源池中选取第一资源,采用所述第一资源向所述Relay UE发送侧行链路控制消息SCI;所述Remote UE从所述数据资源池中选取第二资源,采用所述第二资源向所述Relay UE发送包含有所述BSR的媒体接入控制协议数据单元MAC PDU;所述SCI包含用于指示所述第二资源的位置信息的指示信息。
- 根据权利要求2所述的方法,其特征在于,所述MAC PDU包括:媒体接入控制头MAC Header、和第一媒体接入控制控制单元MAC CE;所述MAC Header包含第一媒体接入控制子头MAC Subheader,所述第一MAC CE包含所述BSR;所述第一MAC Subheader包含逻辑信道标识LCID,所述LCID用于指示所述第一MAC CE为BSR MAC CE、以及所述BSR MAC CE的格式。
- 根据权利要求1所述的方法,其特征在于,在所述Remote UE向Relay UE发送BSR,所述方法还包括:所述Remote UE获取所述基站为所述Remote UE配置的控制信令资源池,所述控制信令资源池用于所述Remote UE传输资源请求信 息;所述Remote UE向Relay UE发送所述BSR,包括:所述Remote UE从所述控制信令资源池中选取第三资源,采用所述第三资源向所述Relay UE发送包含所述BSR的SCI。
- 根据权利要求4所述的方法,其特征在于,所述SCI还包含:所述Remote UE的索引、目的端层2标识、所述Remote UE的每个逻辑信道组对应的缓存中待传输的数据量、以及所述BSR的格式中的一种或多种信息;所述Remote UE的索引为所述Remote UE在所述Relay UE下的唯一标识,所述目的端层2标识为所述Relay UE的目的层2地址;所述BSR的格式用于指示所述BSR为长缓存状态报告Long BSR、或者短缓存状态报告Short BSR、或者截短缓存状态报告Truncated BSR。
- 根据权利要求1所述的方法,其特征在于,在所述Remote UE向Relay UE发送所述BSR,所述方法还包括:所述Remote UE接收所述基站分配的侧行链路授权SL grant;所述Remote UE向Relay UE发送所述BSR,包括:所述Remote UE通过所述SL grant指示的资源向所述Relay UE发送包含所述BSR的MAC PDU。
- 根据权利要求6所述的方法,其特征在于,所述MAC PDU包括:MAC Header、第二MAC CE和第一媒体接入控制服务数据单元;所述MAC Header包含:第一MAC Subheader,所述第二MAC CE为包含所述BSR的MAC CE;所述第二MAC Header包含LCID,所述第二MAC Header包含的LCID用于指示所述第二MAC CE为BSR MAC CE、以及所述BSR MAC CE的格式。
- 根据权利要求3或7所述的方法,其特征在于,所述BSR MAC CE为上行链路BSR MAC CE或者侧行链路BSR MAC CE。
- 根据权利要求8所述的方法,其特征在于,若所述BSR MAC CE为上行链路BSR MAC CE,则所述BSR MAC CE的格式包括:Long BSR MAC CE、Short BSR MAC CE、Truncated BSR MAC CE三种格式;若所述BSR MAC CE为侧行链路BSR MAC CE,则所述BSR MAC CE的格式包括侧行链路缓存状态报告Sidelink BSR MAC CE、截短侧行链路缓存状态报告Truncated Sidelink BSR MAC CE两种格式。
- 一种资源请求方法,其特征在于,包括:中继用户设备Relay UE接收至少一个远端用户设备Remote UE上报的至少一个缓存状态报告BSR,每个Remote UE发送的BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量;所述Relay UE对所述至少一个BSR进行处理生成至少一个Relay BSR,并向所述基站发送所述至少一个Relay BSR。
- 根据权利要求10所述的方法,其特征在于,所述Relay UE对所述至少一个BSR进行处理生成Relay BSR,包括:所述Relay UE对所述至少一个BSR进行组合处理,生成一个中继缓存状态报告Relay BSR;所述Relay UE获取所述基站分配的上行调度授权UL grant;所述Relay UE通过所述UL grant所指示的资源,向所述基站发送携带有所述Relay BSR的媒体接入控制协议数据单元MAC PDU。
- 根据权利要求10所述的方法,其特征在于,所述Relay UE对所述至少一个BSR进行处理生成Relay BSR,包括:所述Relay UE对所述至少一个BSR分别进行处理,生成至少一个Relay BSR,所述至少一个Relay BSR与所述Remote UE一一对应;所述Relay UE获取所述基站分配的UL grant;所述Relay UE通过所述UL grant所指示的资源,向所述基站发送携带有所述至少一个Relay BSR的MAC PDU。
- 根据权利要求11或12所述的方法,其特征在于,所述Relay UE获取所述基站分配的UL grant,包括:若所述Relay UE没有可用的UL grant,所述Relay UE触发调度请求SR,并向所述基站发送所述SR,所述SR用于向基站请求分配所述UL grant。
- 根据权利要求11所述的方法,其特征在于,所述MAC PDU包括:媒体接入控制头MAC Header、第一媒体接入控制控制单元MAC CE,所述MAC Header包含:第一MAC Subheader,所述第一MAC CE包含所述Relay BSR;所述第一MAC Subheader包含LCID,所述LCID用于指示所述第一MAC CE为所述Relay BSR MAC CE;所述Relay BSR MAC CE包括:与所述至少一个Remote UE一一对应的至少一组BSR信息;每组BSR信息包括:与该组BSR信息对应的Remote UE的索引、所述Remote UE上报的BSR的格式、所述Remote UE上报的BSR中包含的逻辑信道组的个数、所述Remote UE上报的BSR中包含的逻辑信道组的标识、所述Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息。
- 根据权利要求12所述的方法,其特征在于,所述MAC PDU包括:MAC Header、至少一个第二MAC CE;所述MAC Header包含:至少一个第二MAC Subheader,所述至少一个第二MAC Subheader与所述至少一个第二MAC CE一一对应,所述至少一个第二MAC CE分别为Relay BSR MAC CE,所述至少一个第二MAC CE与所述至少一个Remote UE的Relay BSR一一对应;每个第二MAC Subheader包含LCID,每个第二MAC Subheader包含的LCID用于指示与该第二MAC Subheader对应的第二MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式;每个第二MAC CE包含:与该第二MAC CE相对应的Remote UE的索引、所述Remote UE上报的BSR中包含的逻辑信道组的标识、所述Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据 量中的一种或多种信息。
- 根据权利要求12所述的方法,其特征在于,所述MAC PDU包括:MAC Header、至少一个第三MAC CE,所述至少一个第三MAC CE与所述至少一个Remote UE一一对应,每个第三MAC CE包含与该第三MAC CE相对应的Remote UE的Relay BSR;所述MAC Header包含:至少一个MAC Subheader,所述至少一个MAC Subheader包含第三MAC Subheader和第四MAC Subheader,所述第三MAC Subheader、所述第四MAC Subheader与第一Remote UE相对应,所述第一Remote UE为所述至少一个Remote UE中的任一Remote UE;所述第三MAC Subheader包含:所述第一Remote UE的Index;所述第四MAC Subheader包含LCID,所述第四MAC Subheader包含的LCID用于指示与所述第一Remote UE相对应的第三MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式。
- 根据权利要求12所述的方法,其特征在于,所述MAC PDU包括:MAC Header、至少一MAC CE,所述MAC Header包含:至少一个MAC Subheader;所述至少一个MAC Subheader包含第五MAC Subheader和第六MAC Subheader,所述至少一MAC CE包含第四MAC CE和第五MAC CE;所述第三MAC Subheader、所述第四MAC Subheader与第二Remote UE相对应,所述第四MAC CE、所述第五MAC CE与所述第二Remote UE相对应,所述第二Remote UE为所述至少一个Remote UE中的任一Remote UE;所述第五MAC Subheader包含LCID,所述第五MAC Subheader包含的LCID用于指示所述第四MAC CE中包含所述第二Remote UE的Index;所述第六MAC Subheader包含LCID,所述第六MAC Subheader包含的LCID用于指示所述第五MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式;所述第四MAC CE包含所述第二Remote UE的Index;所述第五MAC CE包含所述第二Remote UE的Relay BSR。
- 根据权利要求12所述的方法,其特征在于,所述MAC PDU包括:MAC Header、至少一个第六MAC CE,所述至少一个第六MAC CE与所述至少一个Remote UE一一对应,每个第六MAC CE包含与该第六MAC CE对应的Remote UE的Relay BSR;所述MAC Header包含:第七MAC Subheader、和至少一个第八MAC Subheader,所述至少一个第八MAC Subheader与所述至少一个第六MAC CE一一对应;所述第七MAC Subheader包含比特图bitmap,所述bitmap包含至少一个比特位,所述至少一个比特位与所述至少一个Remote UE一一对应,每个比特位用于指示所述MAC PDU中是否包含与该比特位对应的Remote UE上报的BSR MAC CE;每个第八MAC Subheader包含LCID,每个第八MAC Subheader包含的LCID用于指示其所对应的第六MAC CE为Relay BSR MAC CE,以及所述Relay BSR MAC CE的格式。
- 根据权利要求12所述的方法,其特征在于,所述MAC PDU包括:MAC Header、第七MAC CE、至少一个第八MAC CE,所述MAC Header包含:第九MAC Subheader和至少一个第十MAC Subheader;所述至少一个第十MAC Subheader与所述至少一个第八MAC CE一一对应,所述至少一个第八MAC CE与所述至少一个Remote UE一一对应,每个第八MAC CE包含与其对应的Remote UE的Relay BSR;所述第九MAC Subheader包含LCID,所述第九MAC Subheader包含的LCID用于指示所述第七MAC CE包含bitmap;每个第十MAC Subheader包含LCID,每个第十MAC Subheader包含的LCID用于指示其所对应的第八MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式;所述第七MAC Subheader包含bitmap,所述bitmap包含至少一个比特位,所述至少一个比特位与所述至少一个Remote UE一一对应,每个比特位用于指示所述MAC PDU中是否包含与该比特位对应的Remote UE上报的BSR MAC CE。
- 根据权利要求16-19任一项所述的方法,其特征在于,所述Relay BSR MAC CE包含:与所述Relay BSR MAC CE对应的Remote UE上报的BSR中包含的逻辑信道组的标识、所述Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息;所述Relay BSR MAC CE的格式包括:Long BSR MAC CE、Short BSR MAC CE、Truncated BSR MAC CE三种格式。
- 根据权利要求11-20任一项所述的方法,其特征在于,所述方法还包括:所述Relay UE在获取所述基站分配的UL grant之后,在进行逻辑信道处理时,按照下述任意一种优先级顺序对UL BSR MAC CE、SL BSR MAC CE、Relay BSR MAC CE进行处理:UL BSR MAC CE>SL BSR MAC CE=Relay BSR MAC CE;UL BSR MAC CE=Relay BSR MAC CE>SL BSR MAC CE;UL BSR MAC CE>SL BSR MAC CE>Relay BSR MAC CE;UL BSR MAC CE>Relay BSR MAC CE>SL BSR MAC CE。
- 一种远端用户设备Remote UE,其特征在于,所述Remote UE包括:处理器,用于触发缓存状态报告BSR;通信接口,用于向中继用户设备Relay UE发送所述处理器触发的BSR,所述BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量。
- 根据权利要求22所述的Remote UE,其特征在于,所述处理器,还用于在所述通信接口向Relay UE发送所述BSR,之前,获取所述基站为所述Remote UE配置的控制信令资源池和数据 资源池,所述控制信令资源池和所述数据资源用于所述Remote UE传输资源请求信息;以及,从所述控制信令资源池中选取第一资源,从所述数据资源池中选取第二资源;所述通信接口,具体用于采用所述第一资源向所述Relay UE发送侧行链路控制消息SCI;采用所述第二资源向所述Relay UE发送包含有所述BSR的媒体接入控制协议数据单元MAC PDU;所述SCI包含用于指示所述第二资源的位置信息的指示信息。
- 根据权利要求23所述的Remote UE,其特征在于,所述MAC PDU包括:媒体接入控制头MAC Header、和第一媒体接入控制控制单元MAC CE;所述MAC Header包含第一媒体接入控制子头MAC Subheader,所述第一MAC CE包含所述BSR;所述第一MAC Subheader包含逻辑信道标识LCID,所述LCID用于指示所述第一MAC CE为BSR MAC CE、以及所述BSR MAC CE的格式。
- 根据权利要求22所述的Remote UE,其特征在于,在所述Remote UE向Relay UE发送BSR,所述Remote UE还包括:所述Remote UE获取所述基站为所述Remote UE配置的控制信令资源池,所述控制信令资源池用于所述Remote UE传输资源请求信息;所述Remote UE向Relay UE发送所述BSR,包括:所述Remote UE从所述控制信令资源池中选取第三资源,采用所述第三资源向所述Relay UE发送包含所述BSR的SCI。
- 根据权利要求25所述的Remote UE,其特征在于,所述SCI还包含:所述Remote UE的索引、目的端层2标识、所述Remote UE的每个逻辑信道组对应的缓存中待传输的数据量、以及所述BSR的格式中的一种或多种信息;所述Remote UE的索引为所述Remote UE在所述Relay UE下的唯一标识,所述目的端层2标识为所述Relay UE的目的层2地址; 所述BSR的格式用于指示所述BSR为长缓存状态报告Long BSR、或者短缓存状态报告Short BSR、或者截短缓存状态报告Truncated BSR。
- 根据权利要求22所述的Remote UE,其特征在于,在所述Remote UE向Relay UE发送所述BSR,所述Remote UE还包括:所述Remote UE接收所述基站分配的侧行链路授权SL grant;所述Remote UE向Relay UE发送所述BSR,包括:所述Remote UE通过所述SL grant指示的资源向所述Relay UE发送包含所述BSR的MAC PDU。
- 根据权利要求27所述的Remote UE,其特征在于,所述MAC PDU包括:MAC Header、第二MAC CE和第一媒体接入控制服务数据单元;所述MAC Header包含:第一MAC Subheader,所述第二MAC CE为包含所述BSR的MAC CE;所述第二MAC Header包含LCID,所述第二MAC Header包含的LCID用于指示所述第二MAC CE为BSR MAC CE、以及所述BSR MAC CE的格式。
- 根据权利要求24或28所述的Remote UE,其特征在于,所述BSR MAC CE为上行链路BSR MAC CE或者侧行链路BSR MAC CE。
- 根据权利要求29所述的Remote UE,其特征在于,若所述BSR MAC CE为上行链路BSR MAC CE,则所述BSR MAC CE的格式包括:Long BSR MAC CE、Short BSR MAC CE、Truncated BSR MAC CE三种格式;若所述BSR MAC CE为侧行链路BSR MAC CE,则所述BSR MAC CE的格式包括侧行链路缓存状态报告Sidelink BSR MAC CE、截短侧行链路缓存状态报告Truncated Sidelink BSR MAC CE两种格式。
- 一种中继用户设备Relay UE,其特征在于,所述Relay UE包括:通信接口,用于接收至少一个远端用户设备Remote UE上报的至少一个缓存状态报告BSR,每个Remote UE发送的BSR用于向基站提供所述Remote UE的缓存中可用的待传输的数据量;处理器,用于对所述至少一个BSR进行处理生成至少一个Relay BSR;所述通信接口,还用于向所述基站发送所述至少一个Relay BSR。
- 根据权利要求31所述的Relay UE,其特征在于,所述处理器,具体用于对所述至少一个BSR进行组合处理,生成一个中继缓存状态报告Relay BSR;所述通信接口,具体用于获取所述基站分配的上行调度授权UL grant,通过所述UL grant所指示的资源,向所述基站发送携带有所述Relay BSR的媒体接入控制协议数据单元MAC PDU。
- 根据权利要求31所述的Relay UE,其特征在于,所述处理器,具体用于对所述至少一个BSR分别进行处理,生成至少一个Relay BSR,所述至少一个Relay BSR与所述Remote UE一一对应;所述通信接口,具体用于获取所述基站分配的UL grant,通过所述UL grant所指示的资源,向所述基站发送携带有所述至少一个Relay BSR的MAC PDU。
- 根据权利要求32或33所述的Relay UE,其特征在于,所述通信接口,具体用于在所述Relay UE没有可用的UL grant,且所述处理器触发调度请求SR时,向所述基站发送所述SR,所述SR用于向基站请求分配所述UL grant。.
- 根据权利要求32所述的Relay UE,其特征在于,所述MAC PDU包括:媒体接入控制头MAC Header、第一媒体接入控制控制单元MAC CE,所述MAC Header包含:第一MAC Subheader,所述第一MAC CE包含所述Relay BSR;所述第一MAC Subheader包含LCID,所述LCID用于指示所述 第一MAC CE为所述Relay BSR MAC CE;所述Relay BSR MAC CE包括:与所述至少一个Remote UE一一对应的至少一组BSR信息;每组BSR信息包括:与该组BSR信息对应的Remote UE的索引、所述Remote UE上报的BSR的格式、所述Remote UE上报的BSR中包含的逻辑信道组的个数、所述Remote UE上报的BSR中包含的逻辑信道组的标识、所述Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息。
- 根据权利要求33所述的Relay UE,其特征在于,所述MAC PDU包括:MAC Header、至少一个第二MAC CE;所述MAC Header包含:至少一个第二MAC Subheader,所述至少一个第二MAC Subheader与所述至少一个第二MAC CE一一对应,所述至少一个第二MAC CE分别为Relay BSR MAC CE,所述至少一个第二MAC CE与所述至少一个Remote UE的Relay BSR一一对应;每个第二MAC Subheader包含LCID,每个第二MAC Subheader包含的LCID用于指示与该第二MAC Subheader对应的第二MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式;每个第二MAC CE包含:与该第二MAC CE相对应的Remote UE的索引、所述Remote UE上报的BSR中包含的逻辑信道组的标识、所述Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息。
- 根据权利要求33所述的Relay UE,其特征在于,所述MAC PDU包括:MAC Header、至少一个第三MAC CE,所述至少一个第三MAC CE与所述至少一个Remote UE一一对应,每个第三MAC CE包含与该第三MAC CE相对应的Remote UE的Relay BSR;所述MAC Header包含:至少一个MAC Subheader,所述至少一个MAC Subheader包含第三MAC Subheader和第四MAC Subheader,所述第三MAC Subheader、所述第四MAC Subheader与第一Remote UE相对应,所述第一Remote UE为所述至少一个Remote UE中的任 一Remote UE;所述第三MAC Subheader包含:所述第一Remote UE的Index;所述第四MAC Subheader包含LCID,所述第四MAC Subheader包含的LCID用于指示与所述第一Remote UE相对应的第三MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式。
- 根据权利要求33所述的Relay UE,其特征在于,所述MAC PDU包括:MAC Header、至少一MAC CE,所述MAC Header包含:至少一个MAC Subheader;所述至少一个MAC Subheader包含第五MAC Subheader和第六MAC Subheader,所述至少一MAC CE包含第四MAC CE和第五MAC CE;所述第三MAC Subheader、所述第四MAC Subheader与第二Remote UE相对应,所述第四MAC CE、所述第五MAC CE与所述第二Remote UE相对应,所述第二Remote UE为所述至少一个Remote UE中的任一Remote UE;所述第五MAC Subheader包含LCID,所述第五MAC Subheader包含的LCID用于指示所述第四MAC CE中包含所述第二Remote UE的Index;所述第六MAC Subheader包含LCID,所述第六MAC Subheader包含的LCID用于指示所述第五MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式;所述第四MAC CE包含所述第二Remote UE的Index;所述第五MAC CE包含所述第二Remote UE的Relay BSR。
- 根据权利要求33所述的Relay UE,其特征在于,所述MAC PDU包括:MAC Header、至少一个第六MAC CE,所述至少一个第六MAC CE与所述至少一个Remote UE一一对应,每个第六MAC CE包含与该第六MAC CE对应的Remote UE的Relay BSR;所述MAC Header包含:第七MAC Subheader、和至少一个第八MAC Subheader,所述至少一个第八MAC Subheader与所述至少一个第六MAC CE一一对应;所述第七MAC Subheader包含比特图bitmap,所述bitmap包含至少一个比特位,所述至少一个比特位与所述至少一个Remote UE一一对应,每个比特位用于指示所述MAC PDU中是否包含与该比特位对应的Remote UE上报的BSR MAC CE;每个第八MAC Subheader包含LCID,每个第八MAC Subheader包含的LCID用于指示其所对应的第六MAC CE为Relay BSR MAC CE,以及所述Relay BSR MAC CE的格式。
- 根据权利要求33所述的Relay UE,其特征在于,所述MAC PDU包括:MAC Header、第七MAC CE、至少一个第八MAC CE,所述MAC Header包含:第九MAC Subheader和至少一个第十MAC Subheader;所述至少一个第十MAC Subheader与所述至少一个第八MAC CE一一对应,所述至少一个第八MAC CE与所述至少一个Remote UE一一对应,每个第八MAC CE包含与其对应的Remote UE的Relay BSR;所述第九MAC Subheader包含LCID,所述第九MAC Subheader包含的LCID用于指示所述第七MAC CE包含bitmap;每个第十MAC Subheader包含LCID,每个第十MAC Subheader包含的LCID用于指示其所对应的第八MAC CE为Relay BSR MAC CE、以及所述Relay BSR MAC CE的格式;所述第七MAC Subheader包含bitmap,所述bitmap包含至少一个比特位,所述至少一个比特位与所述至少一个Remote UE一一对应,每个比特位用于指示所述MAC PDU中是否包含与该比特位对应的Remote UE上报的BSR MAC CE。
- 根据权利要求37-40任一项所述的Relay UE,其特征在于,所述Relay BSR MAC CE包含:与所述Relay BSR MAC CE对应的Remote UE上报的BSR中包含的逻辑信道组的标识、所述Remote UE上报的BSR中每个逻辑信道上可用的待传输的数据量中的一种或多种信息;所述Relay BSR MAC CE的格式包括:Long BSR MAC CE、Short BSR MAC CE、Truncated BSR MAC CE三种格式。
- 根据权利要求32-41任一项所述的Relay UE,其特征在于,所述通信接口,还用于在获取所述基站分配的UL grant之后,在进行逻辑信道处理时,按照下述任意一种优先级顺序对UL BSR MAC CE、SL BSR MAC CE、Relay BSR MAC CE进行处理:UL BSR MAC CE>SL BSR MAC CE=Relay BSR MAC CE;UL BSR MAC CE=Relay BSR MAC CE>SL BSR MAC CE;UL BSR MAC CE>SL BSR MAC CE>Relay BSR MAC CE;UL BSR MAC CE>Relay BSR MAC CE>SL BSR MAC CE。
- 一种资源请求系统,其特征在于,包括:如权利要求22-30任一项所述的远端用户设备Remote UE、如权利要求31-42任一项所述的中继用户设备Relay UE、以及基站。
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US20200029353A1 (en) | 2020-01-23 |
EP3512276A1 (en) | 2019-07-17 |
CN109716838A (zh) | 2019-05-03 |
EP3512276A4 (en) | 2019-08-07 |
US10869329B2 (en) | 2020-12-15 |
CN109716838B (zh) | 2021-11-09 |
EP3512276B1 (en) | 2020-11-25 |
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