WO2019028847A1 - Attribution de ressource - Google Patents

Attribution de ressource Download PDF

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Publication number
WO2019028847A1
WO2019028847A1 PCT/CN2017/097142 CN2017097142W WO2019028847A1 WO 2019028847 A1 WO2019028847 A1 WO 2019028847A1 CN 2017097142 W CN2017097142 W CN 2017097142W WO 2019028847 A1 WO2019028847 A1 WO 2019028847A1
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WO
WIPO (PCT)
Prior art keywords
sidelink
control information
sidelink control
type
resource
Prior art date
Application number
PCT/CN2017/097142
Other languages
English (en)
Inventor
Jin Yang
Youxiong Lu
Shuanghong Huang
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Priority to PCT/CN2017/097142 priority Critical patent/WO2019028847A1/fr
Priority to CN201780093863.XA priority patent/CN110999357B/zh
Publication of WO2019028847A1 publication Critical patent/WO2019028847A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • such sidelink communication may help save radio spectrum resource, may help reduce the data transmission pressure upon the network of the system, may help reduce system resource consumption, may help increase spectral efficiency, may help reduce the network (e.g., base station) transmission power consumption and may help improve network operation costs.
  • the service between user equipment (UE) is required to be transmitted, the service data between the UEs is forwarded by the base station transmitted from a data source UE to a target receiving UE directly via sidelink without passing through the base station.
  • some service data between the UEs may be handled (e.g., forwarded) by a base station of a network.
  • Such handling of service data by the base station may still require some radio spectrum resource, cause some addition to data transmission pressure upon the network of the system, may consume some system resource, may cause some decrease in spectral efficiency, may contribute to the network (e.g., base station) transmission power consumption and may contribute to some network operation costs.
  • a method includes receiving forward sidelink control information from a node, determining a type of the forward sidelink control information; and based upon the type, receiving a sidelink data transmission from the node or transmitting sidelink data to the node.
  • a method includes transmitting forward sidelink control information to a node, determining a type of the forward sidelink control information, and based upon the type, determining an indication in the forward sidelink control information, a resource for transmitting the forward sidelink control information, and a resource indicated in the forward sidelink control information.
  • the device includes a processor, and a memory including processor-executable instructions that when executed by the processor cause performance of a method according to an aspect disclosed herein.
  • FIG. 1A is schematic diagram illustrating sidelink communication in accordance with an aspect of the disclosed subject matter.
  • FIG. 1B is a schematic diagram illustrating sidelink communication, as a comparative to FIG. 1A.
  • FIG. 2 is a schematic diagram of an LTE system frame structure.
  • FIG. 3 is a schematic diagram of an LTE system resource structure.
  • FIG. 4 is a schematic diagram of a sidelink PSCCH /PSSCH resource pool configuration diagram, and shows a PSCCH /PSSCH resource pool period.
  • FIG. 5 is a schematic diagram of a sidelink PSCCH /PSSCH resource pool configuration diagram.
  • FIG. 6 is an example schematic diagram of a process for determining a SCI type in accordance with an aspect of the disclosed subject matter.
  • FIG. 7 is a schematic diagram of a first example method in accordance with an aspect of the disclosed subject matter.
  • FIG. 8 is a schematic diagram of a second example method in accordance with an aspect of the disclosed subject matter.
  • FIG. 9 is a schematic diagram representation of resources for use in a third example method in accordance with an aspect of the disclosed subject matter.
  • FIG. 10 is a schematic diagram representation of resources for use in a fourth example method in accordance with an aspect of the disclosed subject matter.
  • FIG. 11 is a schematic diagram representation of resources for use in a fifth example method in accordance with an aspect of the disclosed subject matter.
  • FIG. 12 is a schematic diagram of a sixth example method in accordance with an aspect of the disclosed subject matter.
  • FIG. 13 is a schematic diagram of a seventh example method in accordance with an aspect of the disclosed subject matter.
  • FIG. 14 is an illustration of a scenario involving an example configuration of a base station (BS) that may utilize and/or implement at least a portion of the techniques presented herein.
  • BS base station
  • FIG. 15 is an illustration of a scenario involving an example configuration of a user equipment (UE) that may utilize and/or implement at least a portion of the techniques presented herein.
  • UE user equipment
  • FIG. 16 is an illustration of a scenario featuring an example non-transitory computer readable medium in accordance with one or more of the provisions set forth herein.
  • UE user equipment
  • eNB base station
  • FIG. 1A is a schematic representation of an aspect of the disclosed subject matter.
  • a first and a second user equipment (UE) e.g., 1550A and 1550B, first and second nodes
  • SL sidelink
  • eNB base station
  • core network e.g., 1450
  • the first and the second UE can be identified as a remote UE and a relay UE. Again, each of the remote UE and the relay UE is a respective node.
  • the relay UE can be a UE with stronger capability than a remote UE. Therefore, the relay UE can schedule resources for the remote UE.
  • the relay UE can be of a same type as a remote UE, e.g., with the same capability, and it is configured by network as a relay UE, or because it is closer to serving the base station. Both relay UE and remote UE can be any type of communication devices.
  • relay UE and remote UE are able to conduct efficient sidelink communication as will be discussed further following for several examples.
  • the disclosed subject matter can use sidelink resources more efficiently, and also reduce the network side burden, reduce system signaling overhead, improve system resource utilization, and meet a variety of UE business needs.
  • Sidelink communication can save radio spectrum resources, can reduce the data transmission pressure of the core network, can reduce the system resource consumption, can increase the spectral efficiency of the cellular communication system, can reduce the terminal transmit power consumption and can save the network operation cost.
  • FIG. 1B a discussion of illustrating sidelink communication according to another embodiment is provided. Specifically, attention is directed to FIG. 1B.
  • the sidelink communication between the first and second user equipment e.g., 1550A and 1550B
  • the base station e.g., 1450
  • the direct sidelink communication between the two UEs can occur.
  • the radio resource is divided into units of radio frames in the time domain.
  • each frame is 10 milliseconds (ms) and contains 10 subframes.
  • Each subframe is 1 ms, divided into 0.5ms 2 slots (slot) .
  • resources are allocated in units of subcarriers. In one example, each unit contains 15 kHz or 7.5 kHz resources.
  • the eNB schedules sidelink resources for the UE. Specifically, the eNB operates upon the time domain to sub-frame units for the resource scheduling instructions, and upon the frequency domain to resource blocks (RB) for the unit Instruction.
  • the RB defined as the time domain contains a slot, and in the frequency domain contains continuous subcarriers, 24 as shown in the example of FIG. 3.
  • the eNB may flexibly allocate and indicate one or more RB resources for a UE.
  • the UE uses the resources in the sidelink resource pool to transmit or receive signals.
  • the sidelink resource pool includes a physical sidelink control channel (PSCCH) , which is used to carry the sidelink control information, and the physical side link shared channel (PSSCH) resource pool, which is used to carry the sidelink data transmission.
  • PSCCH physical sidelink control channel
  • PSSCH physical side link shared channel
  • the UE uses the PSCCH resource to send the side link control information (SCI) , which is used to indicate the PSSCH resources used by the UE to transmit the sidelink data and the associated control information.
  • SCI side link control information
  • the UE itself, cannot schedule sidelink resources and there is no effective solution for this issue.
  • the sidelink resource contains the PSCCH resource pool and the PSSCH resource pool.
  • the PSCCH resource pool is a set of resources used to carry the sidelink Control Information (SCI) , which is configured by the network side through high-level signaling configuration or system pre-configuration.
  • the PSCCH resource pool contains one or more subframes in the time domain. Subframes in each PSCCH resource pool may also be referred to as PSCCH subframes. Each PSCCH subframe may be continuous or discontinuous.
  • the PSCCH resource pool contains one or more RBs in the frequency domain, and the plurality of RBs contained may be continuous or discontinuous.
  • a PSSCH resource pool is a set of resources used to carry sidelink service data, which is configured by the network side through high-level signaling configuration or system pre-configuration.
  • the PSSCH resource pool contains one or more subframes in the time domain. Subframes in each PSSCH resource pool may also be referred to as PSSCH subframes, and each PSSCH subframe may be continuous or discontinuous.
  • FIG. 4 shows a sidelink resource pool configuration, which referred to as Case A.
  • the PSCCH /PSSCH resource pool is periodic, and has a same period of the two.
  • Each cycle contains a number of PSCCH subframes, and a number of PSSCH subframes, each PSCCH subframe contains several RBs as PSCCH resources, and each PSSCH subframe contains several RBs as PSSCH resources.
  • FIG. 5 shows a sidelink resource pool configuration, referred to as Case B, wherein the PSCCH resource pool and PSSCH resource pool have same subframes.
  • the PSSCH resource pool contains several sub-channels, and each sub-channel contains k RBs.
  • the RB of the PSCCH resource pool in the frequency domain is the two RBs with the smallest RB index in each sub-channel.
  • the PSSCH resource pool contains several sub-channels, and each sub-channel contains k RBs.
  • the PSCCH resource pool contains several RBs in the frequency domain, and the RBs in the PSCCH resource pool are not adjacent to the RBs in the PSSCH resource pool, and each PSCCH resource contains two RBs.
  • the sidelink resources are used for transmission of data between the UEs.
  • the transmitting UE transmits the sidelink control information (SCI) on the PSCCH resource, instructs the receiving UE regarding the PSSCH resources it should use for transmitting sidelink data, and the associated configuration information, and further sends sidelink data on the indicated PSSCH resource.
  • SCI sidelink control information
  • the transmitting end UE is to operate similar to a base station.
  • the Sidelink communication shown within FIG. 1B is broadcast communication.
  • the Sidelink UE does not have the function of scheduling another UE having communication with it.
  • the disclosed subject matter solves the problem of UEs in Sidelink communication not being capable to scheduling and indicating Sidelink resources. So, in accordance with an aspect of the disclosed subject matter, one UE (FIG. 1A) can schedule and indicate Sidelink resources for another UE (e.g., two nodes) .
  • Sidelink resources can be scheduled more flexibly and efficiently, and also reduce the network side burden, reduce system signaling overhead, improve system resource utilization, and meet a variety of UE business needs.
  • UE pairs that perform sidelink communication can be categorized as the remote UE and the relay UE.
  • the sidelink resource used by the remote UE for propagation sidelink signals can be scheduled by the relay UE, the relay UE using SCI to indicate the sidelink resource allocation for the remote UE, including PSCCH resource and /or PSSCH resource, and further Including other configuration instructions such as MCS, TPC (Transmission Power Control) , data retransmission indicator, etc.
  • the scheduling SCI transmitted by the relay UE and received by the remote UE, contains sidelink resource assignment for the remote UE, named as the forward SCI type 1. It indicates the remote UE resources that relay UE allocates to it and associated control information.
  • the relay UE may transmit its sidelink signal on sidelink resources, including transmits forward SCI on PSCCH resource, and this type of forward SCI indicates the PSSCH resources used by the relay UE and other control parameters, this type of forward SCI is named as forward SCI type 2.
  • forward SCI type 2 indicates resources that relay UE itself uses for its sidelink data transmission and associated control information to the remote UE.
  • the relay UE which relays the signals between the remote UE and the network.
  • the relay UE can be one of the UE pairs which perform sidelink communication with resource scheduling ability.
  • the sidelink resources indicated in the forward SCI type 1, for the remote UE sidelink transmitting can be determined by eNB (as a network site) , and forwarded by the relay UE to the remote UE; or, can be determined by the relay UE itself, and then indicated to the remote UE.
  • FIG. 6 shows a top-level methodology of the disclosed subject matter.
  • the method is initiated at act S602, wherein the remote UE blindly detects SCI in PSCCH resource pool.
  • act S604 there is a determination of whether the received SCI is a forward SCI type 1 or a forward SCI type 2.
  • the received SCI is a forward SCI type 1
  • the sidelink resources indicated in the SCI are the resources for the remote UE sidelink transmitting resources, and the remote UE should use the assigned resources to transmit its signal to the relay UE.
  • the method proceeds to act S606.
  • the received SCI is not a forward SCI type 1 (i.e., the received SCI is a forward SCI type 2) , such indicates that the received SCI provides the resources from the relay UE and some other control information. Accordingly, the method of FIG. 6 would then proceed from act S604 to act S608. Thus, the remote UE should receive/retain/use the signal on the indicated resources from the relay UE.
  • the relay UE may simultaneously perform sidelink communication with a plurality of remote UEs, respectively, and the relay UE needs to indicate the sidelink resource for the remote UE respectively, and when the PSCCH resource pools in which multiple remote UEs blindly detect their SCI are the same or a partial overlap, each remote UE needs to be able to correctly distinguish the received forward SCI type 1 of the current remote UE.
  • the determination made at act S604 within the top-level method of FIG. 6 is made at the remote UE.
  • the determination made at act S604 is not made elsewhere (e.g., not made at the base station since communication is not proceeding to/though the base station) .
  • the determination is made blindly since the remote UE is making the determination at act S604 at each sequence through the method of FIG. 6 solely upon the currently received communication.
  • the disclosed subject matter includes the following: receiving a forward sidelink control information from a node, determining a type of the received forward sidelink control information, and based upon the determined type, receiving sidelink data transmission from the node or transmitting sidelink data to the node. Also, the disclosed subject matter includes the following: transmitting a forward sidelink control information to a node, determining a type of the forward sidelink control information, and based upon the type, determining at least one of the following: an indication in the forward sidelink control information, a resource for transmitting the forward sidelink control information, and a resource indicated in the forward sidelink control information.
  • the first resolution method is based on transmitting/scheduling indication in the forward SCI.
  • this method includes setting an indication bit in the SCI to indicate that the SCI is a forward SCI type 1 (which can be referred to as “scheduling forward SCI” ) or a forward SCI type 2.
  • the 1-bit indicator bit is an indication within the SCI.
  • the indication via value “1” , indicates that the SCI is a forward SCI type 1 or, via value “0” , that the SCI is a forward SCI type 2, or vice versa.
  • the remote UE blindly detects a SCI in PSCCH resource pool.
  • decoding of the instructions in the SCI is performed. Specifically, it is determined whether the indication bit indicates that the SCI is a forward SCI type 1 or that the SCI is a forward SCI type 2. Within the presented example, the indicator bit would be “1” to indicate that the SCI is a forward SCI type 1 and “0” to indicate that the SCI is a forward SCI type 2. Of course, for a different example, the indication of “1” and “0” could be vice versa. Moreover, although this example presents a binary digit of value “1” or “0” , it is to be appreciated that such need not be a specific limitation and that other/different values could be used and also need not even be binary.
  • the method proceed to act S706. Specifically, the remote UE obtains the sidelink PSCCH and/or PSSCH resource assignment in the forward SCI type 1 and then transmits on the assigned resource.
  • the method proceed to act S708. Specifically, the remote UE has determined that the received SCI is the forward SCI type 2. So, the sidelink data transmission of the relay UE is received on the corresponding PSSCH resource according to the resources indicated in the SCI.
  • a backward SCI refers to the SCI in which the remote UE is sent on the configured PSCCH resource according to the scheduling instructions of the relay UE, and the backward SCI may indicate the parameters such as MCS, TPC and so on that the remote UE uses for transmitting the sidelink data over the configured PSSCH resource.
  • the PSCCH used for transmitting the backward SCI is assigned in the forward SCI type 1 by relay UE. Again, within this example, the backward SCI is transmitted by the remote UE to the relay UE.
  • the second resolution method is based on UE Identification (ID) .
  • ID UE Identification
  • one or more indication field are set in the forward SCI to indicate the UE ID of the UE to which the current SCI belongs.
  • the UE ID refers to the identification information that can clearly identify a UE.
  • the UE ID is embodied in a plurality of types, such as: an RNTI, which can uniquely identify a UE in a cell, a sidelink UE ID, among a plurality of UEs performing sidelink communication, which can uniquely identify a UE, UE index inside of a group, that within a group, it is possible to uniquely identify a UE and so on.
  • the relay UE may set UE index for one or more of the remote UEs to communicate with, this UE index is known to the relay UE and corresponding remote UE, and the UE index of each of the remote UEs is unique among the plurality of remote UEs which are in sidelink communication with this relay UE.
  • FIG. 8 is an example flowchart.
  • the forward SCI contains an N-bit indication field, which indicates the UE ID of the UE to which the current forward SCI belongs.
  • the method begins at act S802.
  • the remote UE blindly detects a forward SCI in PSCCH resource pool.
  • the UE ID is obtained from within the received SCI.
  • the UE ID is the remote UE ID.
  • the N-bit indication field indicates the use ID is the current remote UE ID
  • it is determined that the current SCI is the forward SCI type 1 for current UE and indicates the sidelink resource assignment for remote UE transmitting.
  • the method then proceeds from act S806 to act S808.
  • act S808 the sidelink PSCCH and/or PSSCH resource assignment for the forward SCI type 1 is obtained and then remote UE transmitted on the assign resource. Specifically, when the remote UE determines that the received SCI is the forward SCI type 1 for scheduling its own sidelink resource, and PSCCH and PSSCH resources are indicated in SCI, remote UE sends a backward SCI on the indicated PSCCH resource and /or sends sidelink data on the indicated PSSCH resource.
  • act S806 it is determined if the UE ID is not the remote UE ID, within the presented example, the remote UE proceeds from Act S806 to act S810.
  • the UE ID is the relay UE ID or not.
  • the SCI is the forward SCI type 2.
  • the method proceeds from act S810 to act S812. Based on the forward SCI type 2, remote UE receives signal from relay UE on the PSSCH resource indicated in the SCI. If the determination at act S810 is no, the method proceeds to act S814. Then the remote UE determine the SCI is invalid and there is no further processing to be done.
  • the third resolution method is based on a dedicated PSCCH resource pool.
  • Two example cases are provided following. However, there may be other examples.
  • As a general starting point for use of a dedicated PSCCH resource pool reference is made to the example shown within FIG. 9.
  • the SCI type can be determined by sending the SCI using the resource in related dedicate PSCCH resource pool.
  • a dedicated PSCCH resource pool it is possible that it can only carry information related to the UE to which the current resource pool belongs.
  • the dedicated PSCCH resource pool of the remote UE can only carry the forward SCI type 1 for scheduling the PSSCH resource assignment for the remote UE.
  • the relay UE's dedicated PSCCH resource pool can only carry the forward SCI type 2 that is used to indicate the relay UE sidelink data transmission.
  • the remote UE obtains the sidelink resource pool configuration via the network-side higher-layer or the signaling configuration from the relay UE, or system preconfiguration.
  • the sidelink resource pool configuration includes dedicated PSCCH resource pool for the relay UE and its own dedicated PSCCH resource pool.
  • the remote UE blindly detects SCI in the relay UE dedicated PSCCH resource pool and its own dedicated PSCCH resource pool.
  • the remote UE When the remote UE receives the SCI in the relay UE dedicated PSCCH resource pool, it can be determined that the SCI is the forward SCI type 2. Further, the remote UE receives the sidelink data transmission of the relay UE on the corresponding PSSCH resource according to the resources indicated in the SCI. When the remote UE receives a SCI in its own dedicated resource pool, it can be determined that the SCI is the forward SCI type 1. Further, PSSCH resource for remote UE is assigned, and a PSCCH resource for backward SCI may be indicated in the SCI. The remote UE then sends backward SCI (if PSCCH is assigned) and sidelink data on the indicated resource.
  • the remote UE and the relay UE have their own dedicated PSCCH resource pools.
  • the relay UE transmits the forward SCI type 2 in its PSCCH resource pool to indicate its data transmitting in PSSCH resources.
  • the relay UE indicates the forward SCI type 1 in the PSCCH resource pool of the remote UE.
  • the PSCCH resource pools for the relay UE and for itself are both reception resource pools, and the remote UE should try to blindly detect SCI in these PSCCH resource pools.
  • the remote UE When the remote UE detect a SCI in the relay UE's PSCCH resource pool, it means that the SCI is a forward SCI type 2, and when a SCI in its own PSCCH resource pool is detected, it should be a forward SCI type 1. According to the indication in the received SCI, the remote UE should receive the data on the PSSCH resource while the SCI is the forward SCI type 2, or transmit its SCI and/or data on the assigned resources while the SCI is the forward SCI type 1.
  • the dedicated resource pool at least contains the PSCCH resource pool and may further include a dedicated PSSCH resource pool.
  • the relay UE only sends the SCI associated with the sidelink communication between relay UE and the current remote UE, and does not send an SCI for other remote UE, including forward SCI type 2 that indicates relay UE transmitting to other remote UE, and forward SCI type 1 that schedules resources for another remote UE.
  • the forward SCI type 2 for indicating the relay UE sidelink data transmission and the forward SCI type 1 for scheduling the remote UE sidelink resource may be carried in the dedicated resource pool shared by the remote UE with the relay UE.
  • the remote UE When the remote UE receives the SCI in the dedicated resource pool, it can be determined that the SCI is the forward SCI type 2, or is the forward SCI type 1 related with itself. Further, the remote UE needs to distinguish between the received SCI as the forward SCI type 1 or the forward SCI type 2.
  • the present resolution example i.e., the third method
  • the third method can be combined with the first method (i.e., the SCI 1-bit indicator bit instructions) .
  • the combination of methods can accomplish or improve accomplishing the distinguishing between the forward SCI type 1 and the forward SCI type 2. Or, in the other instruction fields of the SCI, distinguish the forward SCI type 1 from the forward SCI type 2 in a unique, e.g., implicit, way.
  • the fourth resolution method is based on a dedicated PSSCH resource pool.
  • the PSSCH resource in the dedicated PSSCH resource pool carries only the sidelink data transmission of the related UE.
  • the remote UE's dedicated PSSCH resource pool can only carry the remote UE sidelink data
  • the relay UE's dedicated PSSCH resource pool can only carry the relay UE sidelink data.
  • the remote UE can determine the type of SCI according to the PSSCH resource indicated in the SCI.
  • the indicated PSSCH resource is in the remote UE PSSCH resource pool, it can be determined that the SCI is the forward SCI type 1 and the indicated PSSCH resource is the remote UE sidelink transmission resource.
  • the indicated PSSCH resource is at the relay UE PSSCH resource pool, it can be determined that the SCI is the forward SCI type 2 and the indicated PSSCH resource is the relay UE sidelink transmission resource.
  • the remote UE is configured via the network-side high-level configuration or the signaling configuration of the relay UE, or the system is preconfigured to obtain the sidelink resource pool configuration, including the relay UE's dedicated PSSCH resource pool, and its own dedicated PSSCH resource pool, and PSCCH resource pool.
  • the remote UE blindly detects SCI in the PSCCH resource pool and decodes the PSSCH resource allocation indicated in the SCI.
  • the remote UE receives the sidelink data transmission of the relay UE on the corresponding PSSCH resource.
  • the SCI is the forward SCI type 1. Further, the remote UE sends sidelink data on the indicated PSSCH resource.
  • the remote UE and the relay UE have their own dedicated PSSCH resource pools.
  • the relay UE transmits a SCI and indicates PSSCH resources in SCI.
  • the relay UE indicates PSSCH resource contains in the remote UE dedicated PSSCH resource pool in the SCI.
  • the relay UE sidelink data transmission indicates the PSSCH resource in the relay UE dedicated PSSCH resource pool.
  • the remote UE should try to blindly detect SCI in PSCCH resource pool and decode the information contains in the SCI.
  • PSSCH resources indicated in the received SCI are contained in the remote UE PSSCH resource pool, it means that the SCI is a forward SCI type 1, and when the PSSCH resource indicated in the received SCI are contained in the relay UE PSSCH resource pool, it means that the SCI is a forward SCI type 2.
  • the remote UE should receive the data on the PSSCH resource while the SCI is the forward SCI type 2, or transmit its SCI and/or data on the assigned resources while the SCI is the forward SCI type 1.
  • the fifth resolution method is based on the timing relation between SCI and the corresponding PSSCH resource.
  • attention is directed to the example shown within FIG. 11.
  • the remote UE can obtain a rule to derive the type of forward SCI based on the timing relationship between the forward SCI and the PSSCH resource indicated in the forward SCI. For example, when the interval between the SCI and the PSSCH resource indicated in the SCI is greater than or equal to k, where k is a constant value or preconfigured by the system, the SCI is the forward SCI type 1 and the PSSCH resource indicated by SCI is used for the remote UE transmission, and when the subframe interval between the SCI and the PSSCH resource indicated in the SCI is less than or equal to or less than t, where t is a constant value or preconfigured by the system, the SCI is the forward SCI type 2, which indicates the sidelink transmission of the relay UE. And, k and t can be assigned with same value.
  • the remote UE shares the PSSCH resource pool with the relay UE.
  • the relay UE indicates the PSSCH resource in the SCI, the indicated PSSCH resource can clearly determine where the subframe is located, for example, directly indicates the PSSCH resource subframe number, or indicates the subframe interval between the PSSCH resource and the SCI.
  • the remote UE receives the SCI blindly in the PSCCH resource pool and obtains the PSSCH resource information indicated in the SCI to determine the subframe interval between the subframe where the indicated PSSCH resource is located and the subframe that receives the SCI. Further, the remote UE determines that the SCI type is the forward SCI type 1 or the forward SCI type 2 based on the subframe interval and the system predefined timing rules.
  • the remote UE When the subframe interval is greater than or equal to 4, it can be determined that the SCI is the forward SCI type 1. Further, the remote UE sends sidelink data on the indicated PSSCH resource. When the subframe interval is less than 4, it can be determined that that the SCI is the forward SCI type 2. Further, the remote UE receives the sidelink data transmission of the relay UE on the corresponding PSSCH resource, as shown in FIG. 11.
  • the value of k is the same as the value of t. If so, the timing relationship determinations would be modified so that the timing relationship determinations cannot provide a conflicting result. Specifically, both timing relationship determinations would not be able to include the option of time being equal to the same value. As one example modification, if k equals t, the timing relationship determinations could be: greater than or equal to k and less than t.
  • the eNB scheduling information distinguishing for sidelink resource.
  • the resource allocation information for relay UE and remote UE are indicated in DCI.
  • the relay UE can relay the indication from eNB to remote UE, that is to say, the sidelink resource allocation for remote UE scheduled by eNB should be relayed through relay UE to remote UE.
  • the relay UE it needs to receive both itself DCI and the related remote UE DCI, and then forward the information of the remote UE DCI on sidelink to the corresponding remote UE.
  • the relay UE when the relay UE receives a DCI from eNB, it should be determined that the current DCI is DCI type 1 which indicates PSCCH and/or PSSCH resource allocation for relay UE or DCI type 2 which indicates PSCCH and/or PSSCH resource allocation for remote UE.
  • the DCI distinguish scheme is similar as disclosed scheme for SCI type 1 and type 2.
  • the sixth resolution method is based on scheduling/forwarding indication in the DCI. Specifically, this method includes setting an indication bit in the DCI to indicate that it is a DCI type 1 (which can be referred to as “scheduling DCI” ) or a DCI type 2 (which can be referred to as “forwarding DCI” ) .
  • DCI type 1 which can be referred to as “scheduling DCI”
  • DCI type 2 which can be referred to as “forwarding DCI”
  • the 1-bit indicator is an indication within the DCI. The indication, via value “1” , indicates that the DCI is a DCI type 1, or, via value “0” , that the DCI is a DCI type 2, vice versa.
  • the relay UE blindly detects a DCI in PDCCH.
  • decoding of the instructions in the DCI is performed. Specifically, it is determined whether the indication bit indicates that the DCI is a DCI type 1 or DCI type 2. Within the presented example, the indicator bit would be “1” to indicate that the DCI is a DCI type 1 and “0” to indicate that the DCI is a DCI type 2. Of course, for a different example, the indication of “1” and “0” could be vice versa. Moreover, although this example presents a binary digit of value “1” or “0” , it is to be appreciated that such need not be a specific limitation and that other/different values could be used and also need not even be binary.
  • the method proceed to act S1206. Specifically, the relay UE obtains the sidelink PSCCH and/or PSSCH resource assignment scheduled by eNB in the DCI type 1 and then transmits on the assigned resource.
  • the method proceed to act S1208. Specifically, the relay UE has determined that the received DCI is the DCI type 2. So, the sidelink resources indicated in the DCI is for remote UE, and then relay UE needs to forward the resource allocation to remote UE via SCI.
  • the seventh resolution method is based on UE ID.
  • an indication field is set in the DCI to indicate the UE ID of the UE to which the current DCI belongs. Attention is drawn to FIG. 13.
  • the DCI contains an N-bit indication field, which indicates the UE ID of the UE to which the current DCI belongs.
  • the method begins at act S1302.
  • the relay UE blindly detects a DCI in PDCCH resource.
  • the UE ID is obtained from within the received DCI.
  • the UE ID is the remote UE ID or relay UE ID.
  • the N-bit indication field indicates the UE ID is the relay UE ID
  • it is determined that the current DCI is the DCI type 1 for relay UE and indicates the sidelink resource assignment for relay UE transmitting.
  • act S1306 the sidelink PSCCH and/or PSSCH resource assignment in the DCI type 1 is obtained and then relay UE transmitted on the assign resource.
  • relay UE determines if the UE ID is not the relay UE ID.
  • relay UE proceeds from act S1306 to act S1310.
  • the N-bit indication field indicates that the UE ID is a remote UE ID, thus, the DCI is the DCI type 2.
  • relay UE forward the information contains in the DCI type 2 to the corresponding remote UE on sidelink.
  • FIG. 14 presents a schematic architecture diagram 1400 of a base station 1450 that may be utilized with UEs that use at least a portion of the techniques provided herein.
  • a base station 1450 may vary widely in configuration and/or capabilities, alone or in conjunction with other base stations, nodes, end units and/or servers, etc. in order to provide a service, such as at least some of one or more of the other disclosed techniques, scenarios, etc. It is contemplated that the base station is a node.
  • the base station 1450 may connect one or more user equipment (UE) to a (e.g., wireless) network (e.g., which may be connected and/or include one or more other base stations) , such as Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA) networks, Frequency Division Multiple Access (FDMA) networks, Orthogonal FDMA (OFDMA) networks, Single-Carrier FDMA (SC-FDMA) networks, etc.
  • the network may implement a radio technology, such as Universal Terrestrial Radio Access (UTRA) , CDMA13000, Global System for Mobile Communications (GSM) , Evolved UTRA (E-UTRA) , IEEE 802.11, IEEE 802.16, IEEE 802.20, Flash-OFDM, etc.
  • the base station 1450 and/or the network may communicate using a standard, such as Long-Term Evolution (LTE) .
  • LTE Long-Term Evolution
  • the base station 1450 may comprise one or more (e.g., hardware) processors 1410 that process instructions.
  • the one or more processors 1410 may optionally include a plurality of cores; one or more coprocessors, such as a mathematics coprocessor or an integrated graphical processing unit (GPU) ; and/or one or more layers of local cache memory.
  • the base station 1450 may comprise memory 1402 storing various forms of applications, such as an operating system 1404; one or more base station applications 1406; and/or various forms of data, such as a database 1408 and/or a file system, etc.
  • the base station 1450 may comprise a variety of peripheral components, such as a wired and/or wireless network adapter 1414 connectible to a local area network and/or wide area network; one or more storage components 1416, such as a hard disk drive, a solid-state storage device (SSD) , a flash memory device, and/or a magnetic and/or optical disk reader; and/or other peripheral components.
  • peripheral components such as a wired and/or wireless network adapter 1414 connectible to a local area network and/or wide area network; one or more storage components 1416, such as a hard disk drive, a solid-state storage device (SSD) , a flash memory device, and/or a magnetic and/or optical disk reader; and/or other peripheral components.
  • the base station 1450 may comprise a mainboard featuring one or more communication buses 1412 that interconnect the processor 1410, the memory 1402, and/or various peripherals, using a variety of bus technologies, such as a variant of a serial or parallel AT Attachment (ATA) bus protocol; a Uniform Serial Bus (USB) protocol; and/or Small Computer System Interface (SCI) bus protocol.
  • a communication bus 1412 may interconnect the base station 1450 with at least one other server.
  • Other components that may optionally be included with the base station 1450 (though not shown in the schematic diagram 1400 of FIG.
  • a display includes a display adapter, such as a graphical processing unit (GPU) ; input peripherals, such as a keyboard and/or mouse; and/or a flash memory device that may store a basic input/output system (BIOS) routine that facilitates booting the base station 1450 to a state of readiness, etc.
  • a display adapter such as a graphical processing unit (GPU)
  • input peripherals such as a keyboard and/or mouse
  • BIOS basic input/output system
  • the base station 1450 may operate in various physical enclosures, such as a desktop or tower, and/or may be integrated with a display as an “all-in-one” device.
  • the base station 1450 may be mounted horizontally and/or in a cabinet or rack, and/or may simply comprise an interconnected set of components.
  • the base station 1450 may comprise a dedicated and/or shared power supply 1418 that supplies and/or regulates power for the other components.
  • the base station 1450 may provide power to and/or receive power from another base station and/or server and/or other devices.
  • the base station 1450 may comprise a shared and/or dedicated climate control unit 1420 that regulates climate properties, such as temperature, humidity, and/or airflow. Many such base stations 1450 may be configured and/or adapted to utilize at least a portion of the techniques presented herein.
  • FIG. 15 presents a schematic architecture diagram 1500 of a user equipment (UE) 1550 (e.g., a node) whereupon at least a portion of the techniques presented herein may be implemented.
  • UE user equipment
  • FIG. 1550 may vary widely in configuration and/or capabilities, in order to provide a variety of functionality to a user. It is to be appreciated that the UE can be a node.
  • the UE 1550 may be provided in a variety of form factors, such as a mobile phone (e.g., a smartphone) ; a desktop or tower workstation; an “all-in-one” device integrated with a display 1508; a laptop, tablet, convertible tablet, or palmtop device; a wearable device, such as mountable in a headset, eyeglass, earpiece, and/or wristwatch, and/or integrated with an article of clothing; and/or a component of a piece of furniture, such as a tabletop, and/or of another device, such as a vehicle or residence.
  • the UE 1550 may serve the user in a variety of roles, such as a telephone, a workstation, kiosk, media player, gaming device, and/or appliance.
  • the UE 1550 may comprise one or more (e.g., hardware) processors 1510 that process instructions.
  • the one or more processors 1510 may optionally include a plurality of cores; one or more coprocessors, such as a mathematics coprocessor or an integrated graphical processing unit (GPU) ; and/or one or more layers of local cache memory.
  • the UE 1550 may comprise memory 1501 storing various forms of applications, such as an operating system 1503; one or more user applications 1502, such as document applications, media applications, file and/or data access applications, communication applications, such as web browsers and/or email clients, utilities, and/or games; and/or drivers for various peripherals.
  • the UE 1550 may comprise a variety of peripheral components, such as a wired and/or wireless network adapter 1506 connectible to a local area network and/or wide area network; one or more output components, such as a display 1508 coupled with a display adapter (optionally including a graphical processing unit (GPU) ) , a sound adapter coupled with a speaker, and/or a printer; input devices for receiving input from the user, such as a keyboard 1511, a mouse, a microphone, a camera, and/or a touch-sensitive component of the display 1508; and/or environmental sensors, such as a GPS receiver 1519 that detects the location, velocity, and/or acceleration of the UE 1550, a compass, accelerometer, and/or gyroscope that detects a physical orientation of the UE 1550.
  • peripheral components such as a wired and/or wireless network adapter 1506 connectible to a local area network and/or wide area network
  • one or more output components such as a display
  • Other components that may optionally be included with the UE 1550 include one or more storage components, such as a hard disk drive, a solid-state storage device (SSD) , a flash memory device, and/or a magnetic and/or optical disk reader; a flash memory device that may store a basic input/output system (BIOS) routine that facilitates booting the UE 1550 to a state of readiness; and/or a climate control unit that regulates climate properties, such as temperature, humidity, and airflow, etc.
  • storage components such as a hard disk drive, a solid-state storage device (SSD) , a flash memory device, and/or a magnetic and/or optical disk reader; a flash memory device that may store a basic input/output system (BIOS) routine that facilitates booting the UE 1550 to a state of readiness; and/or a climate control unit that regulates climate properties, such as temperature, humidity, and airflow, etc.
  • BIOS basic input/output system
  • the UE 1550 may comprise a mainboard featuring one or more communication buses 1512 that interconnect the processor 1510, the memory 1501, and/or various peripherals, using a variety of bus technologies, such as a variant of a serial or parallel AT Attachment (ATA) bus protocol; the Uniform Serial Bus (USB) protocol; and/or the Small Computer System Interface (SCI) bus protocol.
  • the UE 1550 may comprise a dedicated and/or shared power supply 1518 that supplies and/or regulates power for other components, and/or a battery 1504 that stores power for use while the UE 1550 is not connected to a power source via the power supply 1518.
  • the UE 1550 may provide power to and/or receive power from other client devices.
  • FIG. 16 is an illustration of a scenario 1600 involving an example non-transitory computer readable medium 1602.
  • the non-transitory computer readable medium 1602 may comprise processor-executable instructions 1612 that when executed, as an embodiment 1614, by a processor 1616 cause performance (e.g., by the processor 1616) of at least some of the provisions herein.
  • the non-transitory computer readable medium 1602 may comprise a memory semiconductor (e.g., a semiconductor utilizing static random access memory (SRAM) , dynamic random access memory (DRAM) , and/or synchronous dynamic random access memory (SDRAM) technologies) , a platter of a hard disk drives, a flash memory device, or a magnetic or optical disc (such as a compact disc (CD) , digital versatile disc (DVD) , and/or floppy disk) .
  • a memory semiconductor e.g., a semiconductor utilizing static random access memory (SRAM) , dynamic random access memory (DRAM) , and/or synchronous dynamic random access memory (SDRAM) technologies
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • CD compact disc
  • DVD digital versatile disc
  • floppy disk floppy disk
  • the example non-transitory computer readable medium 1602 stores computer-readable data 1604 that, when subjected to reading 1606 by a reader 1610 of a device 1608 (e.g., a read head of a hard disk drive, or a read operation invoked on a solid-state storage device) , express the processor-executable instructions 1612.
  • the processor-executable instructions 1612 when executed, cause performance of operations, such as at least some of the above-discussed example methods.
  • the example methods include, but are not limited to the methods presented herein, and the other described methods.
  • UE User Equipment
  • eNB E-UTRAN NodeB, Base station
  • DCI Downlink Control information
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PDCCH Physical Downlink Control Channel
  • ком ⁇ онент As used in this application, "component, “ “module, “ “system” , “interface” , and/or the like are generally intended to refer to a computer-related entity, either hardware, a combination of hardware and software, software, or software in execution.
  • a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a controller and the controller can be a component.
  • One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers (e.g., nodes (s) ) .
  • first, ” “second, ” and/or the like are not intended to imply a temporal aspect, a spatial aspect, an ordering, etc. Rather, such terms are merely used as identifiers, names, etc. for features, elements, items, etc.
  • a first object and a second object generally correspond to object A and object B or two different or two identical objects or the same object.
  • example is used herein to mean serving as an instance, illustration, etc., and not necessarily as advantageous.
  • “or” is intended to mean an inclusive “or” rather than an exclusive “or” .
  • “a” and “an” as used in this application are generally be construed to mean “one or more” unless specified otherwise or clear from context to be directed to a singular form.
  • at least one of A and B and/or the like generally means A or B or both A and B.
  • the claimed subject matter may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques to produce software, firmware, hardware, or any combination thereof to control a computer (e.g., node) to implement the disclosed subject matter.
  • a computer e.g., node
  • article of manufacture is intended to encompass a computer program accessible from any computer-readable device, carrier, or media.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un ou plusieurs dispositifs, systèmes et/ou procédés permettant de recevoir des informations de commande de liaison latérale de réacheminement à partir d'un nœud, déterminer un type des informations de commande de liaison latérale de réacheminement, et en fonction du type, recevoir une transmission de données de liaison latérale à partir du nœud ou transmettre des données de liaison latérale au nœud. L'invention concerne un ou plusieurs dispositifs, systèmes et/ou procédés permettant de transmettre des informations de commande de liaison latérale de réacheminement à un nœud, un type des informations de commande de liaison latérale de réacheminement indiquant si le nœud reçoit une transmission de données de liaison latérale ou transmet des données de liaison latérale et, en fonction du type, recevoir la transmission de données de liaison latérale provenant du nœud ou transmettre les données de liaison latérale au nœud.
PCT/CN2017/097142 2017-08-11 2017-08-11 Attribution de ressource WO2019028847A1 (fr)

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CN113994755B (zh) * 2019-05-14 2024-04-26 Lg电子株式会社 在nr v2x中调度多个资源的方法和设备
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WO2021088080A1 (fr) * 2019-11-08 2021-05-14 华为技术有限公司 Procédés de transmission et de réception de données, et procédé et appareil de transmission de signal de référence
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WO2022072742A1 (fr) * 2020-10-02 2022-04-07 Qualcomm Incorporated Transmission de liaison latérale d'un équipement utilisateur (ue) à distance à un ue relais
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US11729776B2 (en) 2021-01-14 2023-08-15 Qualcomm Incorporated Methods and apparatus for transmitting sidelink control messages
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WO2022154916A1 (fr) * 2021-01-14 2022-07-21 Qualcomm Incorporated Planification de résolution de conflit pour des transmissions de liaison latérale se chevauchant
WO2022189097A1 (fr) * 2021-03-08 2022-09-15 Nokia Technologies Oy Communications de liaison latérale améliorées dans des réseaux de communication cellulaire

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