WO2020221005A1 - 有效随机接入资源的确定方法、信号接收方法及节点 - Google Patents

有效随机接入资源的确定方法、信号接收方法及节点 Download PDF

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Publication number
WO2020221005A1
WO2020221005A1 PCT/CN2020/084794 CN2020084794W WO2020221005A1 WO 2020221005 A1 WO2020221005 A1 WO 2020221005A1 CN 2020084794 W CN2020084794 W CN 2020084794W WO 2020221005 A1 WO2020221005 A1 WO 2020221005A1
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Prior art keywords
random access
resource
access resource
node
resources
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PCT/CN2020/084794
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English (en)
French (fr)
Inventor
吴丹
郑毅
董静
金婧
张静文
王启星
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present disclosure relates to the field of wireless communication technology, and in particular to a method for determining effective random access resources, a method for receiving signals, and a node.
  • IAB Integrated Access and Backhaul
  • FIG. 1 is a schematic diagram of an IAB network, where IAB donor is the host node connected to the core network through optical fiber, Backhaul is the backhaul link, Access is the access link, and IAB node is no optical fiber connection. Core network, but IAB nodes that can perform backhaul through wireless links and can provide access functions.
  • the Distributed Unit (DU) side of the IAB node can provide backhaul or access capabilities for lower-level nodes or users,
  • the mobile terminal/termination (MT) side of the IAB node can connect to the upper-level node as a user to realize backhaul.
  • DU Distributed Unit
  • MT mobile terminal/termination
  • the random access resources allocated to the terminal need to be judged according to the frame structure of the system to determine the effective random access Only after the resource can it be associated and mapped with the synchronization signal and used.
  • IAB nodes it is currently only determined that there must be a time offset configuration between its random access resource configuration and the random access resources of ordinary users, so as to ensure that IAB nodes between two consecutive hops can configure TDM (Time division) random access resources.
  • RO Random Access Channel
  • Occasion random access resource which may also be referred to as random access transmission opportunity
  • the present disclosure provides a method for determining an effective random access resource, a signal receiving method, and a node to solve the problem that it is not clear how the effective random access resource of an IAB node is determined.
  • the present disclosure provides a method for determining effective random access resources, which is applied to the first node, and includes:
  • the first effective random access resource is a first random access resource meeting a first preset condition
  • the first preset condition includes at least one of the following:
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • the first node is a node with access and/or backhaul capabilities.
  • the second random access resource and/or the second effective random access resource are located in a third resource or a fourth resource.
  • the third resource is the UL hard resource that is required for uplink on the DU side of the distributed unit as the first node; the fourth resource is the UL hard resource available for uplink on the DU side of the distributed unit as the first node. Resources.
  • the second random access resource and/or the second effective random access resource include: random access resources configured for the terminal, and/or random access resources configured for the subordinate first node .
  • the first synchronization signal/broadcast channel block is located in the fifth resource or the sixth resource.
  • the fifth resource is a required downlink DL Hard resource on the DU side of the distributed unit as the first node; the sixth resource is a downlink available DL soft resource on the DU side of the first node as the distributed unit Resources.
  • the first synchronization signal/broadcast channel block resource includes: a synchronization signal/broadcast channel block resource for terminal access and measurement sent by the first node, and/or, sent by the first node
  • the synchronization signal/broadcast channel block resource used for discovery between nodes.
  • the method further includes:
  • the first node serving as the distributed unit DU side does not receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the present disclosure also provides a signal receiving method applied to the first node, including:
  • the first node serving as the distributed unit DU side does not receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the first effective random access resource is a first random access resource meeting a first preset condition
  • the first preset condition includes at least one of the following:
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • the present disclosure also provides a first node, including:
  • the determining module is configured to determine a first effective random access resource, where the first effective random access resource is a first random access resource that meets a first preset condition, and the first preset condition includes at least one of the following :
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • the first node is a node with access and/or backhaul capabilities.
  • the second random access resource and/or the second effective random access resource are located in a third resource or a fourth resource.
  • the third resource is the UL hard resource that is required for uplink on the DU side of the distributed unit as the first node; the fourth resource is the UL hard resource available for uplink on the DU side of the distributed unit as the first node. Resources.
  • the second random access resource and/or the second effective random access resource include: random access resources configured for the terminal, and/or random access resources configured for the subordinate first node .
  • the first synchronization signal/broadcast channel block is located in the fifth resource or the sixth resource.
  • the fifth resource is a required downlink DL Hard resource on the DU side of the distributed unit as the first node; the sixth resource is a downlink available DL soft resource on the DU side of the first node as the distributed unit Resources.
  • the first synchronization signal/broadcast channel block resource includes: a synchronization signal/broadcast channel block resource for terminal access and measurement sent by the first node, and/or, sent by the first node
  • the synchronization signal/broadcast channel block resource used for discovery between nodes.
  • the first node further includes:
  • the receiving module is used for the first node as the distributed unit DU side not to receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the present disclosure also provides a first node, including:
  • the receiving module is used for the first node as the distributed unit DU side not to receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the first effective random access resource is a first random access resource meeting a first preset condition
  • the first preset condition includes at least one of the following:
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • the present disclosure also provides a first node, including a memory, a processor, and a computer program stored on the memory and running on the processor; the processor executes the computer program when the computer program is executed Any of the foregoing methods for determining effective random access resources or implementing any of the foregoing signal receiving methods.
  • the present disclosure also provides a computer-readable storage medium on which a computer program is stored.
  • the computer program When the computer program is executed by a processor, it realizes the steps in any of the above-mentioned methods for determining effective random access resources or realizes the above Steps in any signal receiving method.
  • a criterion for determining the effective random access resource on the MT side of the half-duplex IAB node is provided: if it is compared with the random access resource on the DU side (that is, the If the second random access resource and/or the second effective random access resource overlap, the random access resource on the DU side takes precedence; if it is the same as the SSB resource on the DU side (that is, the first synchronization signal/broadcast channel block) ) Overlap, the SSB resources on the DU side are given priority; in addition, in order to reserve time for uplink and downlink conversion, for the random access resources on the MT side after the random access resources on the DU side, only the random access resources on the DU side are separated Only when it is greater than or equal to N symbols can it be determined as an effective random access resource on the MT side.
  • Figure 1 is a schematic diagram of an IAB network
  • Figure 2 is a schematic diagram of the half-duplex restriction of the IAB node
  • Figure 3 is a schematic diagram of the half-duplex + time division limit of the IAB node
  • Figure 4 is a schematic diagram of the half-duplex restriction of the IAB node, considering space division or frequency division;
  • Embodiment 5 is a schematic flowchart of a method for determining effective random access resources in Embodiment 1 of the present disclosure
  • FIG. 6 is a schematic diagram of a judgment rule when the RO on the MT side conflicts with the downlink resource on the DU side in an embodiment of the disclosure
  • FIG. 7 is a schematic flowchart of a signal receiving method in Embodiment 2 of the disclosure.
  • FIG. 8 is a schematic structural diagram of a first node in Embodiment 3 of the disclosure.
  • FIG. 9 is a schematic structural diagram of a first node in the fourth embodiment of the disclosure.
  • FIG. 10 is a schematic structural diagram of another first node in Embodiment 5 of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another first node in Embodiment 6 of the disclosure.
  • an IAB node For an IAB node, it has both MT function (MT side function) and DU function (DU side function).
  • MT side function normally, the effective random access resources should be determined according to the uplink, downlink, and flexible resource allocation on the MT side, but the IAB node also has the DU function.
  • the MT side when receiving on the DU side, the MT side will definitely not be able to send, that is, as shown in Figure 2, if the DU side is receiving transmissions from lower-level nodes or terminals (such as random access of the terminal) Resources (UE RACH), random access resources of lower nodes (RACH of lower nodes), and other uplink resources (other UL)) will conflict with random access resources on the MT side.
  • UE RACH lower-level nodes or terminals
  • RACH random access resources of lower nodes
  • other uplink resources other uplink resources
  • SSB SS/PBCH Block, synchronization signal block and/or physical broadcast channel block, including PSS (primary synchronization signal), SSS (secondary synchronization signal) and PBCH (physical broadcast channel)
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • RMSI Remaining Minimal System Information
  • the first embodiment of the present disclosure provides a method for determining the effective random access resource on the MT side in combination with the resource allocation on the DU side. Please refer to FIG. 5, which is an effective random access resource provided by the first embodiment of the disclosure.
  • Step 51 Determine a first effective random access resource, where the first effective random access resource is a first random access resource meeting a first preset condition, and the first preset condition includes at least one of the following (also: That is, the effective random access resource on the MT side is determined according to at least one of the following conditions):
  • the random access resource on the MT side has priority over other uplink resources on the DU side except for the random access resource;
  • the random access resources on the MT side have priority over other downlink resources on the DU side except the SSB resources;
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0. That is, among the random access resources on the MT side that are located after the random access resources on the DU side, the number of symbols separated from the random access resources on the DU side is greater than or equal to N. Effective random access resources.
  • the preset conditions are not limited to the conditions listed above, and may also include other conditions, that is, the effectiveness of the effective random access resources on the MT side may also be determined according to other conditions, for example, according to the MT side
  • the uplink, downlink, and flexible resource allocation conditions determine the effectiveness of random access resources.
  • the random access resource on the MT side (that is, the first random access resource, the same below) is the same as the random access resource on the DU side (that is, the second random access resource and/or the first random access resource).
  • Effective random access resources, the same below) and/or SSB resources that is, the first synchronization signal/broadcast channel block, the same below
  • the effective random access resources on the MT side may not include overlapping entire random blocks
  • the access resources may also include only the overlapping part, that is, only the overlapping part is knocked out, and the remaining part is retained.
  • the number of symbols located after the second random access resource and the interval between the second random access resource and/or the second effective random access resource is greater than or equal to N
  • the random access resources on the MT side and the random access resources on the DU side may or may not overlap. If there is overlap, the overlapped part and the N symbols before the overlap are knocked out.
  • the uplink signal on the DU side and the random access resources on the MU side conflict with each other, taking into account the random access resources configured by the DU side for the terminal It is necessary to ensure the correct understanding of some legacy UEs (old terminals, which can also be called old user equipment). Therefore, it should be ensured that this part of the random access resources (configured to the terminal on the DU side) will not be affected by the MT side after configuration. Therefore, once there is a conflict with the random access resource on the MT side, it should be ensured that the random access resource configured on the DU side for the terminal has priority.
  • the random access resources on the MT side and the random access resources on the DU side are orthogonal, that is, the random access resources configured on the MT side and the random access resources configured on the DU side are orthogonal.
  • the access resources use the same random access resource configuration index (PRACH configuration Index), plus the configuration of the time offset.
  • PRACH configuration Index random access resource configuration index
  • the random access resources configured on the MT side and the random access resources configured on the DU side use different random access resource configuration indexes, and the random access resources on the MT side overlap with the random access resources on the DU side, Then the overlapping part cannot be used as an effective random access resource on the MT side, that is, the random access resource on the DU side is given priority. And among other random access resources on the MT side (except for the part that overlaps with the random access resources on the DU side), the random access resources whose interval with the random access resources on the DU side are greater than or equal to N symbols are Effective random access resources on the MT side.
  • the effective random access resource on the MT side needs to be greater than or equal to N symbols from the random access resource on the DU side.
  • the effective random access resource on the MT side The random access resource is located before the random access resource on the DU side, so the interval between the effective random access resource on the MT side and the random access resource on the DU side can be less than N symbols, that is, It is not restricted by the condition that the interval is greater than or equal to N symbols.
  • the value of N can be 0 or 2.
  • the corresponding relationship between the value of N and the preamble SCS of the random access preamble can be found in Table 1 below.
  • Preamble SCS N 1.25kHz or 5kHz 0 15kHz or 30kHz or 60kHz or 120kHz 2
  • the random access resource on the MT side cannot be sent on the resource (DU hard) that is determined to be used by the DU side, it may cause the random access channel (Random Access Channel, RACH) association period on the MT side to be too long, causing the MT side
  • RACH Random Access Channel
  • the random access resource on the MT side is preferred.
  • the transmission of the SSB should be given priority. That is, the random access resources on the MT side that overlap with the SSB resources on the DU side should be considered Not a valid random access resource.
  • a criterion for determining effective random access resources on the MT side of a half-duplex IAB node is provided: if it overlaps with the random access resources on the DU side and/or the effective random access resources on the DU side, then The random access resources on the DU side are given priority; if they overlap with the SSB resources on the DU side, the SSB resources on the DU side are given priority; in addition, in order to reserve time for uplink and downlink conversion, for the MT located after the random access resources on the DU side
  • the side random access resource is determined as the effective random access resource on the MT side only when the random access resource interval from the DU side is greater than or equal to N symbols.
  • the following examples illustrate the method for determining the effective random access resource.
  • the first node is a node with access and/or backhaul capabilities.
  • the name of the first node may be an integrated access backhaul node (IAB node), or another name, which is not limited here.
  • the second random access resource and/or the second effective random access resource are located in a third resource or a fourth resource.
  • the third resource is an uplink required (UL hard) resource of the first node as a distributed unit (DU) side; the fourth resource is the first node as a distributed unit (DU) The uplink available (UL soft) resources on the) side.
  • UL hard uplink required
  • DU distributed unit
  • UL soft uplink available
  • the random access resource on the DU side is located in the UL hard resource or the UL soft resource on the DU side. That is to say, as long as it is the random access resource configured on the DU side, no matter what form (UL hard, UL soft), it is preferred to the random access resource on the MT side.
  • the second random access resource and/or the second effective random access resource include: random access resources configured for the terminal, and/or random access resources configured for the subordinate first node .
  • the random access resources on the DU side include: random access resources configured to the terminal, and/or random access resources configured to the subordinate first node.
  • the random access resources configured by the DU side for the terminal need to ensure the correct understanding of some legacy UEs, it is necessary to give priority to the random access resources configured by the DU side for the terminal.
  • the random access resources allocated to the lower-level nodes on the DU side are prioritized.
  • the first synchronization signal/broadcast channel block is located in the fifth resource or the sixth resource.
  • the fifth resource is a required downlink (DL Hard) resource of the first node as the distributed unit (DU) side; the sixth resource is the first node as a distributed unit (DU) The downlink available (DL soft) resources on the) side.
  • DL Hard required downlink
  • DU distributed unit
  • DL soft downlink available
  • the SSB resource on the DU side is located in the DL hard resource or the DL soft resource on the DU side.
  • the first synchronization signal/broadcast channel block resource includes: a synchronization signal/broadcast channel block resource for terminal access and measurement sent by the first node, and/or, sent by the first node
  • the method provided by the embodiment of the present disclosure further includes:
  • the first node serving as a distributed unit (DU) side does not receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the first node as a distributed unit (DU) side can receive an uplink signal on an uplink resource meeting a third preset condition, and the third preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is greater than or equal to N, where N is an integer greater than or equal to 0.
  • the DU side does not receive uplink signals within the following symbols:
  • N is an integer greater than or equal to 0.
  • the priority to ensure random access resources on the DU side is to ensure the correct understanding of some legacy UEs.
  • the DU side does not receive uplink resources within N symbols before the random access resource on the MT side (except the random access resource on the DU side).
  • the N symbols between the effective random access resources on the MT side and the random access resources on the DU side are used for uplink and downlink conversion, and the effective random access resources on the MT side are the same as those on the DU side.
  • the N symbols spaced between other uplink resources are also used for uplink and downlink conversion.
  • FIG. 7 is a signal receiving method provided in the second embodiment of the present disclosure, which is applied to the first node, that is, the IAB node, and includes:
  • Step 71 The first node, as a distributed unit (DU) side, does not receive uplink signals on uplink resources that meet a second preset condition, where the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the first node as a distributed unit (DU) side can receive an uplink signal on an uplink resource meeting a third preset condition, and the third preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is greater than or equal to N, where N is an integer greater than or equal to 0.
  • the DU side does not receive uplink signals within the following symbols:
  • N is an integer greater than or equal to 0.
  • the priority to ensure random access resources on the DU side is to ensure the correct understanding of some legacy UEs.
  • it is necessary to yield to the random access resources on the MT side that is, the random access resources on the MT side have priority over other uplink resources on the DU side to ensure the transmission of the backhaul link on the MT side.
  • the DU side does not receive uplink resources within N symbols before the random access resources on the MT side (except for the random access resources on the DU side), for the purpose of uplink and downlink conversion.
  • the first effective random access resource is a first random access resource meeting a first preset condition
  • the first preset condition includes at least one of the following:
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • FIG. 8 is a schematic structural diagram of a first node according to Embodiment 3 of the present disclosure.
  • the first node 80 includes:
  • the determining module 81 is configured to determine a first effective random access resource, where the first effective random access resource is a first random access resource that meets a first preset condition, and the first preset condition includes at least one of the following One:
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • a criterion for determining effective random access resources on the MT side of a half-duplex IAB node is provided: if it overlaps with the random access resources on the DU side, the random access resources on the DU side are given priority; if If it overlaps with the SSB resources on the DU side, the SSB resources on the DU side are given priority; in addition, in order to reserve time for uplink and downlink conversion, for the random access resources on the MT side after the random access resources on the DU side, only those on the DU side When the random access resource interval is greater than or equal to N symbols, it is determined as the effective random access resource on the MT side.
  • the first node is a node with access and/or backhaul capabilities.
  • the second random access resource and/or the second effective random access resource are located in a third resource or a fourth resource.
  • the third resource is an uplink required (UL hard) resource of the first node as a distributed unit (DU) side; the fourth resource is the first node as a distributed unit (DU) The uplink available (UL soft) resources on the side.
  • UL hard uplink required
  • DU distributed unit
  • DU distributed unit
  • UL soft uplink available
  • the second random access resource and/or the second effective random access resource include: random access resources configured for the terminal, and/or random access resources configured for the subordinate first node .
  • the first synchronization signal/broadcast channel block is located in the fifth resource or the sixth resource.
  • the fifth resource is a required downlink (DL Hard) resource of the first node as a distributed unit (DU) side; the sixth resource is the first node as a distributed unit (DU) Downlink available (DL soft) resources on the side.
  • DL Hard required downlink
  • DU distributed unit
  • DL soft Downlink available
  • the first synchronization signal/broadcast channel block resource includes: a synchronization signal/broadcast channel block resource for terminal access and measurement sent by the first node, and/or, sent by the first node
  • the synchronization signal/broadcast channel block resource used for discovery between nodes.
  • the first node further includes:
  • a receiving module configured for the first node as a distributed unit (DU) side to not receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the embodiment of the present disclosure is a product embodiment corresponding to the foregoing method embodiment 1, so it will not be repeated here.
  • FIG. 9 is a schematic structural diagram of a first node according to Embodiment 4 of the present disclosure.
  • the first node 90 includes:
  • the receiving module 91 is configured to, as the distributed unit (DU) side, the first node does not receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the priority to ensure random access resources on the DU side is to ensure the correct understanding of some legacy UEs.
  • the random access resources on the MT side it is necessary to yield to the random access resources on the MT side, that is, the random access resources on the MT side have priority over other uplink resources on the DU side to ensure the transmission of the backhaul link on the MT side.
  • the DU side does not receive uplink resources within N symbols before the random access resource on the MT side (except for the random access resource on the DU side) for the purpose of uplink and downlink conversion.
  • the first effective random access resource is a first random access resource meeting a first preset condition
  • the first preset condition includes at least one of the following:
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • the embodiment of the present disclosure is a product embodiment corresponding to the second embodiment of the above method, so it will not be repeated here.
  • FIG. 10 is a schematic structural diagram of another first node provided by Embodiment 5 of the present disclosure.
  • the first node 100 includes a processor 101, a memory 102, and is stored on the memory 102 and can be stored in the A computer program running on the processor 101; when the processor 101 executes the computer program, the following steps are implemented:
  • the first effective random access resource is a first random access resource meeting a first preset condition
  • the first preset condition includes at least one of the following:
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • a criterion for determining effective random access resources on the MT side of a half-duplex IAB node is provided: if it overlaps with the random access resources on the DU side, the random access resources on the DU side are given priority; if If it overlaps with the SSB resources on the DU side, the SSB resources on the DU side are given priority; in addition, in order to reserve time for uplink and downlink conversion, for the random access resources on the MT side after the random access resources on the DU side, only those on the DU side When the random access resource interval is greater than or equal to N symbols, it is determined as the effective random access resource on the MT side.
  • the first node is a node with access and/or backhaul capabilities.
  • the second random access resource and/or the second effective random access resource are located in a third resource or a fourth resource.
  • the third resource is an uplink required (UL hard) resource of the first node as a distributed unit (DU) side; the fourth resource is the first node as a distributed unit (DU) The uplink available (UL soft) resources on the side.
  • UL hard uplink required
  • DU distributed unit
  • DU distributed unit
  • UL soft uplink available
  • the second random access resource and/or the second effective random access resource include: random access resources configured for the terminal, and/or random access resources configured for the subordinate first node .
  • the first synchronization signal/broadcast channel block is located in the fifth resource or the sixth resource.
  • the fifth resource is a required downlink (DL Hard) resource of the first node as a distributed unit (DU) side; the sixth resource is the first node as a distributed unit (DU) Downlink available (DL soft) resources on the side.
  • DL Hard required downlink
  • DU distributed unit
  • DL soft Downlink available
  • the first synchronization signal/broadcast channel block resource includes: a synchronization signal/broadcast channel block resource for terminal access and measurement sent by the first node, and/or, sent by the first node
  • the synchronization signal/broadcast channel block resource used for discovery between nodes.
  • processor 101 may also implement the following steps when executing the computer program:
  • the first node serving as the distributed unit DU side does not receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • FIG. 11 is a schematic structural diagram of another first node provided by Embodiment 6 of the present disclosure.
  • the first node 110 includes a processor 111, a memory 112, and is stored on the memory 112 and can be stored in the A computer program running on the processor 111; when the processor 111 executes the computer program, the following steps are implemented:
  • the first node serving as a distributed unit (DU) side does not receive uplink signals on uplink resources that meet a second preset condition, and the second preset condition includes at least one of the following:
  • the number of symbols located before the first effective random access resource and separated from the first effective random access resource is less than N, where N is an integer greater than or equal to 0.
  • the priority to ensure random access resources on the DU side is to ensure the correct understanding of some legacy UEs.
  • it is necessary to yield to the random access resources on the MT side that is, the random access resources on the MT side have priority over other uplink resources on the DU side to ensure the transmission of the backhaul link on the MT side.
  • the DU side does not receive uplink resources within N symbols before the random access resources on the MT side (except for the random access resources on the DU side), for the purpose of uplink and downlink conversion.
  • the first effective random access resource is a first random access resource meeting a first preset condition
  • the first preset condition includes at least one of the following:
  • the number of symbols located after the second random access resource and separated from the second random access resource and/or the second effective random access resource is greater than or equal to N, where N is greater than Or an integer equal to 0.
  • the seventh embodiment of the present disclosure provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it implements any of the steps or steps in the method for determining effective random access resources in the first embodiment.
  • the steps in any signal receiving method in the second embodiment above are implemented.
  • the terminal in the embodiments of the present disclosure may be a wireless terminal or a wired terminal.
  • a wireless terminal may be a device that provides voice and/or other service data connectivity to users, a handheld device with wireless connection function, or a wireless modem connected to it. Other processing equipment.
  • a wireless terminal can communicate with one or more core networks via a radio access network (RAN).
  • the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal For example, they can be portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the wireless access network.
  • Wireless terminals can also be called systems, subscriber units (Subscriber Unit), subscriber stations (Subscriber Station), mobile stations (Mobile Station), mobile stations (Mobile), remote stations (Remote Station), remote terminals (Remote Terminal), The access terminal (Access Terminal), user terminal (User Terminal), user agent (User Agent), and terminal (User Device or User Equipment) are not limited here.
  • the above-mentioned computer-readable storage medium includes permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology.
  • the information can be computer-readable instructions, data structures, program modules, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices.
  • PRAM phase change memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • RAM random access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read-only memory
  • flash memory or

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Abstract

本公开提供一种有效随机接入资源的确定方法、信号接收方法及节点，属于无线通信技术领域，其中一种方法包括：确定第一有效随机接入资源，第一有效随机接入资源为满足第一预设条件的第一随机接入资源，第一预设条件包括以下至少之一：与第二随机接入资源和/或第二有效随机接入资源不重叠；与第一同步信号/广播信道块不重叠；位于第二随机接入资源之后，且与第二随机接入资源和/或第二有效随机接入资源之间间隔的符号个数大于或等于N。

Description

有效随机接入资源的确定方法、信号接收方法及节点
相关申请的交叉引用
本申请主张在2019年4月30日在中国提交的中国专利申请号No.201910365173.6的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及无线通信技术领域，尤其涉及一种有效随机接入资源的确定方法、信号接收方法及节点。
背景技术
为了满足5G(第五代移动通信系统)热点高容量场景的应用需求，未来5G部署中会需要采用高频段的密集部署。为了降低对光纤的需求降低成本，需要使用接入回传一体化(Integrated Access and Backhaul，IAB)这一技术，在高频基站的接入功能上，增加回传功能，使得高频部署时可以不需要光纤与核心网连接，利用无线链路就能实现回传功能。请参阅图1，图1为一种IAB网络的示意图，其中，IAB donor为通过光纤连接核心网的宿主节点，Backhaul为回传链路，Access为接入链路，IAB node也即无光纤连接核心网、但可以通过无线链路进行回传、且可以提供接入功能的IAB节点，IAB节点的分布式单元(Distributed Unit，DU)侧能为下级节点或用户提供回传或接入能力，IAB节点的移动终端/终结点(Mobile Termination，MT)侧能作为用户连入上级节点实现回传。
新空口(New Radio，NR)中，由于帧结构配置灵活，有下行、上行和灵活资源之分，配置给终端的随机接入资源，需要根据系统的帧结构情况进行判断，确定有效随机接入资源之后，才能和同步信号进行关联映射，并进行使用。而对于IAB节点，目前只确定了其随机接入资源配置要与普通用户的随机接入资源之间要有一个时间偏移量的配置，从而保证接连两跳之间的IAB节点可以配置出TDM(时分)的随机接入资源。但是，目前尚不清楚IAB节点的有效RO(RACH(Random Access Channel)Occasion随机接入资源， 也可以称为随机接入传输机会)要如何确定。
发明内容
有鉴于此，本公开提供一种有效随机接入资源的确定方法、信号接收方法及节点，用于解决目前尚不清楚IAB节点的有效随机接入资源要如何确定的问题。
为解决上述技术问题，第一方面，本公开提供一种有效随机接入资源的确定方法，应用于第一节点，包括：
确定第一有效随机接入资源，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
可选的，所述第一节点为具有接入和/或回传能力的节点。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源位于第三资源或第四资源内。
可选的，所述第三资源为所述第一节点作为分布式单元DU侧的上行必用UL hard资源；所述第四资源为所述第一节点作为分布式单元DU侧的上行可用UL soft资源。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源包括：配置给终端的随机接入资源，和/或，配置给下级第一节点的随机接入资源。
可选的，所述第一同步信号/广播信道块位于第五资源或第六资源内。
可选的，所述第五资源为所述第一节点作为分布式单元DU侧的下行必用DL Hard资源；所述第六资源为所述第一节点作为分布式单元DU侧的下行可用DL soft资源。
可选的，所述第一同步信号/广播信道块资源包括：所述第一节点发送的用于终端接入和测量的同步信号/广播信道块资源，和/或，所述第一节点发送 的用于节点间发现的同步信号/广播信道块资源。
可选的，所述方法还包括：
所述第一节点作为分布式单元DU侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与所述第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
第二方面，本公开还提供一种信号接收方法，应用于第一节点，包括：
所述第一节点作为分布式单元DU侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
可选的，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
第三方面，本公开还提供一种第一节点，包括：
确定模块，用于确定第一有效随机接入资源，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块资源不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
可选的，所述第一节点为具有接入和/或回传能力的节点。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源位于第三资源或第四资源内。
可选的，所述第三资源为所述第一节点作为分布式单元DU侧的上行必用UL hard资源；所述第四资源为所述第一节点作为分布式单元DU侧的上行可用UL soft资源。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源包括：配置给终端的随机接入资源，和/或，配置给下级第一节点的随机接入资源。
可选的，所述第一同步信号/广播信道块位于第五资源或第六资源内。
可选的，所述第五资源为所述第一节点作为分布式单元DU侧的下行必用DL Hard资源；所述第六资源为所述第一节点作为分布式单元DU侧的下行可用DL soft资源。
可选的，所述第一同步信号/广播信道块资源包括：所述第一节点发送的用于终端接入和测量的同步信号/广播信道块资源，和/或，所述第一节点发送的用于节点间发现的同步信号/广播信道块资源。
可选的，所述第一节点还包括：
接收模块，用于所述第一节点作为分布式单元DU侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与所述第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
第四方面，本公开还提供一种第一节点，包括：
接收模块，用于所述第一节点作为分布式单元DU侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
可选的，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
第五方面，本公开还提供一种第一节点，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述计算机程序时实现上述任一种有效随机接入资源的确定方法或者实现上述任一种信号接收方法。
第六方面，本公开还提供一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现上述任一种有效随机接入资源的确定方法中的步骤或者实现上述任一种信号接收方法中的步骤。
本公开的上述技术方案的有益效果如下：
本公开实施例中，提供了一种半双工IAB节点MT侧的有效随机接入资源(也即第一有效随机接入资源)的判定准则：若与DU侧的随机接入资源(也即所述第二随机接入资源和/或第二有效随机接入资源)重叠，则以DU侧的随机接入资源优先；若与DU侧的SSB资源(也即第一同步信号/广播信道块)重叠，则以DU侧的SSB资源优先；另外为了给上下行转换预留时间，对于位于DU侧的随机接入资源之后的MT侧随机接入资源，只有与DU侧的随机接入资源间隔大于或等于N个符号时才确定为MT侧的有效随机接入资源。也就是说，除了与DU侧的随机接入资源重叠的、与DU侧的SSB资源重叠的、DU侧的随机接入资源后N个符号以内的资源不是MT侧的有效随机接入资源，其他的都是MT侧的有效随机接入资源，从而可以在尽可能不影响legacy UE的同时，降低IAB节点回传链路的接入时延，保证回传链路的鲁棒性，避免由于资源配置冲突导致的IAB节点接入失败的问题。
附图说明
图1为一种IAB网络的示意图；
图2为IAB节点的半双工限制示意图；
图3为IAB节点的半双工+时分限制示意图；
图4为IAB节点的半双工限制、考虑空分或频分的示意图；
图5为本公开实施例一中的一种有效随机接入资源的确定方法的流程示意图；
图6为本公开实施例MT侧的RO与DU侧的下行资源冲突时的判断规则示意图；
图7为本公开实施例二中的一种信号接收方法的流程示意图；
图8为本公开实施例三中的一种第一节点的结构示意图；
图9为本公开实施例四中的一种第一节点的结构示意图；
图10为本公开实施例五中的另一种第一节点的结构示意图；
图11为本公开实施例六中的一种另一种第一节点的结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
对于一个IAB节点来说，既有MT功能(MT侧的功能)又有DU功能(DU侧的功能)。对于MT侧，正常来说，应该根据MT侧的上、下行及灵活资源分配，判定有效随机接入资源，但是IAB节点还具有DU功能。考虑IAB节点的半双工限制，在DU侧进行接收的时候，MT侧肯定无法发送，也就是说，如图2所示，如果DU侧在接收下级节点或者终端传输(例如终端的随机接入资源(UE RACH)、下级节点的随机接入资源(下级节点RACH)、其他的上行资源(其他UL))的时候会与MT侧的随机接入资源有冲突。除此之外，如图3所示，目前IAB节点的MT侧和DU侧的资源之间有TDM的限制，也就是两者是需要时分开的，在确定为DU使用的资源(也即DU hard)上，MT侧的随机接入资源无法发送。即使是在IAB节点的MT侧和DU侧 的资源之间没有TDM限制的时候，如图4所示，例如两者可以SDM(空分)或FDM(频分)时，DU侧在发送的时候，MT侧也可以发送。但是当DU侧发送SSB(也即SS/PBCH Block，同步信号块和/或物理广播信道块，包含PSS(主同步信号)、SSS(副同步信号)和PBCH(物理广播信道)，也可以称为同步信号/广播信道块)，或者剩余的最小系统消息(Remaining Minimal System Information，RMSI)这类对于其接入终端重要的下行信号时，应该确保DU侧的发送功率。因此，也应该避免MT侧的随机接入资源和DU侧的SSB资源有冲突。
综上所述，在确定MT侧的有效随机接入资源时，还需要额外考虑DU侧的资源分配。
本公开实施例一提供了一种结合DU侧的资源分配来确定MT侧的有效随机接入资源的方法，请参阅图5，图5为本公开实施例一提供的一种有效随机接入资源的确定方法的流程示意图，该方法应用于第一节点，也即IAB节点，包括以下步骤：
步骤51：确定第一有效随机接入资源，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一(也即按照以下条件中的至少之一确定MT侧的有效随机接入资源)：
与第二随机接入资源和/或第二有效随机接入资源不重叠；也即与DU侧的随机接入资源和/或所述DU侧的有效随机接入资源不重叠；需要说明的是，MT侧的随机接入资源优先于DU侧除随机接入资源以外的其他上行资源；
与第一同步信号/广播信道块不重叠；也即与所述DU侧的SSB资源不重叠；需要说明的是，MT侧的随机接入资源优先于DU侧除SSB资源以外的其他下行资源；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。也即，位于所述DU侧的随机接入资源之后的所述MT侧的随机接入资源中，与所述DU侧的随机接入资源之间间隔的符号个数大于或等于N的才是有效随机接入资源。
当然，所述预设条件并不局限于上述列举的条件，还可以包括其他的条 件，也即还可以根据其他的条件来确定MT侧的有效随机接入资源的有效性，例如根据MT侧的上行、下行和灵活资源分配情况等确定随机接入资源的有效性。
需要说明的是，若MT侧的随机接入资源(也即第一随机接入资源，下同)，与DU侧的随机接入资源(也即所述第二随机接入资源和/或第二有效随机接入资源，下同)和/或SSB资源(也即第一同步信号/广播信道块，下同)重叠，那么MT侧的有效随机接入资源可以不包括存在重叠的整块随机接入资源，也可以是仅仅不包括重叠的部分，也即只将重叠的部分敲掉，剩余部分保留。对于预设条件：位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，其中MT侧的随机接入资源与DU侧的随机接入资源可以存在重叠，也可以不存在重叠，如果存在重叠就将重叠的部分以及重叠之前的N个符号敲掉。
对于与DU侧的随机接入资源不重叠这一条件，由于半双工限制引入的DU侧上行信号与MU侧的随机接入资源冲突的情况，考虑到DU侧给终端配置的随机接入资源需要保证一些legacy UE(老终端，也可以称为老用户设备)的正确理解，因此应该尽可能保证这部分随机接入资源(DU侧配置给终端的)配置后，不会受到MT侧的影响，因此一旦与MT侧的随机接入资源有冲突，那么应该保证DU侧配置给终端的随机接入资源优先。
目前，可以从配置上保证MT侧的随机接入资源与DU侧的随机接入资源(DU侧配置给终端的)是正交的，即MT侧配置的随机接入资源与DU侧配置的随机接入资源使用相同的随机接入资源配置索引(PRACH configuration Index)，再加上时间偏移量的配置。但是，考虑到IAB节点上下行转换的时间，需要限制两者(MT侧的随机接入资源和DU侧的随机接入资源)之间的时间偏移量不小于N个符号。如果时间偏移量是时隙级别的话，需要保证在前一个时隙中的最后一个随机接入资源与后一个时隙中的第一个随机接入资源之间的间隔大于等于N个符号。
如果MT侧配置的随机接入资源与DU侧配置的随机接入资源使用不同的随机接入资源配置索引，且MT侧的随机接入资源中存在与DU侧的随机 接入资源重叠的部分，那么该重叠的部分不能作为MT侧的有效随机接入资源，也即以DU侧的随机接入资源优先。并且MT侧的其他随机接入资源(除与DU侧的随机接入资源重叠的部分)中，与DU侧的随机接入资源之间的间隔大于或等于N个符号的随机接入资源才是MT侧的有效随机接入资源。
综上所述，考虑到IAB节点的上下行转换时间，MT侧的有效随机接入资源需要与DU侧的随机接入资源之间间隔大于或等于N个符号，当然，如果所述MT侧的随机接入资源位于所述DU侧的随机接入资源之前，那么所述MT侧的有效随机接入资源与所述DU侧的随机接入资源之间的间隔可以小于N个符号，也即可以不受间隔大于或等于N个符号这一条件的限制。
其中，上述N的取值可以是0或2。具体的，N的取值与随机接入前导码的子载波间隔(Preamble SCS)之间的对应关系可参阅下表1。
表1
Preamble SCS N
1.25kHz or 5kHz 0
15kHz or 30kHz or 60kHz or 120kHz 2
对于与所述DU侧的SSB资源不重叠这一条件。如果在确定为DU侧使用的资源(DU hard)上，MT侧的随机接入资源无法发送，可能会导致MT侧的随机接入信道(Random Access Channel，RACH)关联周期太长，导致MT侧的接入时延太长，而MT侧的回传链路一旦断开，对于DU侧的影响很大，因此应该尽可能保证MT侧回传链路的传输。从而，本公开实施例中，如图6所示，在与DU侧的下行(例如系统信息(SI)、物理下行控制信道(PDCCH)、信道状态信息参考信号(CSI-RS)等)冲突时，还是以MT侧的随机接入资源优先。但是，由于DU侧的SSB是需要服务接入终端的，不应该影响legacy UE，因此应该以SSB的发送优先，也即，对于与DU侧SSB资源重叠的MT侧的随机接入资源，应该认为不是有效随机接入资源。
本公开实施例中，提供了一种半双工IAB节点MT侧的有效随机接入资源的判定准则：若与DU侧的随机接入资源和/或DU侧的有效随机接入资源重叠，则以DU侧的随机接入资源优先；若与DU侧的SSB资源重叠，则以DU侧的SSB资源优先；另外为了给上下行转换预留时间，对于位于DU侧的随机接入资源之后的MT侧随机接入资源，只有与DU侧的随机接入资源 间隔大于或等于N个符号时才确定为MT侧的有效随机接入资源。也就是说，除了与DU侧的随机接入资源重叠的、与DU侧的SSB资源重叠的、DU侧的随机接入资源后N个符号以内的资源不是MT侧的有效随机接入资源，其他的都是MT侧的有效随机接入资源，从而可以在尽可能不影响legacy UE的同时，降低IAB节点回传链路的接入时延，保证回传链路的鲁棒性，避免由于资源配置冲突导致的IAB节点接入失败的问题。
下面举例说明上述有效随机接入资源的确定方法。
可选的，所述第一节点为具有接入和/或回传能力的节点。具体的，该第一节点的名称可以为接入回传一体化节点(IAB节点)，也可以是其他的名称，这里不做限定。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源位于第三资源或第四资源内。
进一步可选的，所述第三资源为所述第一节点作为分布式单元(DU)侧的上行必用(UL hard)资源；所述第四资源为所述第一节点作为分布式单元(DU)侧的上行可用(UL soft)资源。
也即，所述DU侧的随机接入资源位于DU侧的UL hard资源内或UL soft资源内。也就是说，只要是DU侧配置的随机接入资源，不论是什么形式(UL hard，UL soft)，都是优先于MT侧的随机接入资源的。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源包括：配置给终端的随机接入资源，和/或，配置给下级第一节点的随机接入资源。
也即，所述DU侧的随机接入资源包括：配置给终端的随机接入资源，和/或，配置给下级第一节点的随机接入资源。本公开实施例中，考虑到DU侧给终端配置的随机接入资源需要保证一些legacy UE的正确理解，因此需要优先保证DU侧配置给终端的随机接入资源。其次，再以DU侧配置给下级节点的随机接入资源为优先。
可选的，所述第一同步信号/广播信道块位于第五资源或第六资源内。
进一步可选的，所述第五资源为所述第一节点作为分布式单元(DU)侧的下行必用(DL Hard)资源；所述第六资源为所述第一节点作为分布式单元(DU)侧的下行可用(DL soft)资源。
也即，所述DU侧的SSB资源位于所述DU侧的DL hard资源内或DL soft资源内。
可选的，所述第一同步信号/广播信道块资源包括：所述第一节点发送的用于终端接入和测量的同步信号/广播信道块资源，和/或，所述第一节点发送的用于节点间发现的同步信号/广播信道块资源。也即所述DU侧的SSB资源包括：所述DU侧用于终端接入和测量的SSB资源，和/或，所述DU侧用于节点间发现的SSB资源。
可选的，本公开实施例提供的方法还包括：
所述第一节点作为分布式单元(DU)侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与所述第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
也可以说，所述第一节点作为分布式单元(DU)侧在满足第三预设条件的上行资源上可以接收上行信号，所述第三预设条件包括以下至少之一：
与所述第一有效随机接入资源不重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
也即，所述DU侧在以下符号内均不接收上行信号：
与所述MT侧的有效随机接入资源重叠的符号；
所述MT侧的有效随机接入资源之前的N个符号内，N为大于或等于0的整数。
根据上述，优先保证DU侧的随机接入资源是为了保证一些legacy UE的正确理解。对于DU侧的其他上行资源，则需要让步于MT侧的随机接入资源，也即MT侧的随机接入资源优先于DU侧其他上行资源，以保证MT侧回传链路的传输。
另外，DU侧在MT侧的随机接入资源之前的N个符号内也不接收上行资源(DU侧的随机接入资源除外)。
其中，所述MT侧的有效随机接入资源与所述DU侧的随机接入资源之 间间隔的N个符号用于上下行转换，所述MT侧的有效随机接入资源与所述DU侧的其他上行资源之间间隔的N个符号也是用于上下行转换。
请参阅图7，图7是本公开实施例二提供的一种信号接收方法，应用于第一节点，也即IAB节点，包括：
步骤71：第一节点作为分布式单元(DU)侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
也可以说，所述第一节点作为分布式单元(DU)侧在满足第三预设条件的上行资源上可以接收上行信号，所述第三预设条件包括以下至少之一：
与所述第一有效随机接入资源不重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
也即，所述DU侧在以下符号内均不接收上行信号：
与所述MT侧的有效随机接入资源重叠的符号；
所述MT侧的有效随机接入资源之前的N个符号内，N为大于或等于0的整数。
本公开实施例中，优先保证DU侧的随机接入资源是为了保证一些legacy UE的正确理解。对于DU侧的其他上行资源，则需要让步于MT侧的随机接入资源，也即MT侧的随机接入资源优先于DU侧其他上行资源，以保证MT侧回传链路的传输。另外，DU侧在MT侧的随机接入资源之前的N个符号内也不接收上行资源(DU侧的随机接入资源除外)，目的是为了上下行转换。
可选的，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或 等于0的整数。
具体的，所述第一有效随机接入资源的有关信息请参阅上述实施例一，这里不再赘述。
请参阅图8，图8是本公开实施例三提供的一种第一节点的结构示意图，该第一节点80包括：
确定模块81，用于确定第一有效随机接入资源，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块资源不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
本公开实施例中，提供了一种半双工IAB节点MT侧的有效随机接入资源的判定准则：若与DU侧的随机接入资源重叠，则以DU侧的随机接入资源优先；若与DU侧的SSB资源重叠，则以DU侧的SSB资源优先；另外为了给上下行转换预留时间，对于位于DU侧的随机接入资源之后的MT侧随机接入资源，只有与DU侧的随机接入资源间隔大于或等于N个符号时才确定为MT侧的有效随机接入资源。也就是说，除了与DU侧的随机接入资源重叠的、与DU侧的SSB资源重叠的、DU侧的随机接入资源后N个符号以内的资源不是MT侧的有效随机接入资源，其他的都是MT侧的有效随机接入资源，从而可以在尽可能不影响legacy UE的同时，降低IAB节点回传链路的接入时延，保证回传链路的鲁棒性，避免由于资源配置冲突导致的IAB节点接入失败的问题。
可选的，所述第一节点为具有接入和/或回传能力的节点。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源位于第三资源或第四资源内。
可选的，所述第三资源为所述第一节点作为分布式单元(DU)侧的上行必用(UL hard)资源；所述第四资源为所述第一节点作为分布式单元(DU) 侧的上行可用(UL soft)资源。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源包括：配置给终端的随机接入资源，和/或，配置给下级第一节点的随机接入资源。
可选的，所述第一同步信号/广播信道块位于第五资源或第六资源内。
可选的，所述第五资源为所述第一节点作为分布式单元(DU)侧的下行必用(DL Hard)资源；所述第六资源为所述第一节点作为分布式单元(DU)侧的下行可用(DL soft)资源。
可选的，所述第一同步信号/广播信道块资源包括：所述第一节点发送的用于终端接入和测量的同步信号/广播信道块资源，和/或，所述第一节点发送的用于节点间发现的同步信号/广播信道块资源。
可选的，所述第一节点还包括：
接收模块，用于所述第一节点作为分布式单元(DU)侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与所述第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
本公开实施例是与上述方法实施例一对应的产品实施例，故在此不再赘述，详细请参阅上述实施例一。
请参阅图9，图9是本公开实施例四提供的一种第一节点的结构示意图，该第一节点90包括：
接收模块91，用于所述第一节点作为分布式单元(DU)侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
本公开实施例中，优先保证DU侧的随机接入资源是为了保证一些legacy UE的正确理解。对于DU侧的其他上行资源，则需要让步于MT侧的随机接入资源，也即MT侧的随机接入资源优先于DU侧其他上行资源，以保证MT侧回传链路的传输。另外，DU侧在MT侧的随机接入资源之前的N个符号 内也不接收上行资源(DU侧的随机接入资源除外)，目的是为了上下行转换。
可选的，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
本公开实施例是与上述方法实施例二对应的产品实施例，故在此不再赘述，详细请参阅上述实施例二。
请参阅图10，图10是本公开实施例五提供的另一种第一节点的结构示意图，该第一节点100包括处理器101、存储器102及存储在所述存储器102上并可在所述处理器101上运行的计算机程序；所述处理器101执行所述计算机程序时实现如下步骤：
确定MT侧的有效随机接入资源，所述MT侧的有效随机接入资源满足以下条件中的至少之一：
确定第一有效随机接入资源，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
本公开实施例中，提供了一种半双工IAB节点MT侧的有效随机接入资源的判定准则：若与DU侧的随机接入资源重叠，则以DU侧的随机接入资源优先；若与DU侧的SSB资源重叠，则以DU侧的SSB资源优先；另外为了给上下行转换预留时间，对于位于DU侧的随机接入资源之后的MT侧随机接入资源，只有与DU侧的随机接入资源间隔大于或等于N个符号时才确定为MT侧的有效随机接入资源。也就是说，除了与DU侧的随机接入资源 重叠的、与DU侧的SSB资源重叠的、DU侧的随机接入资源后N个符号以内的资源不是MT侧的有效随机接入资源，其他的都是MT侧的有效随机接入资源，从而可以在尽可能不影响legacy UE的同时，降低IAB节点回传链路的接入时延，保证回传链路的鲁棒性，避免由于资源配置冲突导致的IAB节点接入失败的问题。
所述第一节点为具有接入和/或回传能力的节点。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源位于第三资源或第四资源内。
可选的，所述第三资源为所述第一节点作为分布式单元(DU)侧的上行必用(UL hard)资源；所述第四资源为所述第一节点作为分布式单元(DU)侧的上行可用(UL soft)资源。
可选的，所述第二随机接入资源和/或所述第二有效随机接入资源包括：配置给终端的随机接入资源，和/或，配置给下级第一节点的随机接入资源。
可选的，所述第一同步信号/广播信道块位于第五资源或第六资源内。
可选的，所述第五资源为所述第一节点作为分布式单元(DU)侧的下行必用(DL Hard)资源；所述第六资源为所述第一节点作为分布式单元(DU)侧的下行可用(DL soft)资源。
可选的，所述第一同步信号/广播信道块资源包括：所述第一节点发送的用于终端接入和测量的同步信号/广播信道块资源，和/或，所述第一节点发送的用于节点间发现的同步信号/广播信道块资源。
可选的，所述处理器101执行所述计算机程序时还可实现如下步骤：
所述第一节点作为分布式单元DU侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与所述第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
本公开实施例的具体工作过程与上述方法实施例一中的一致，故在此不再赘述，详细请参阅上述实施例一中方法步骤的说明。
请参阅图11，图11是本公开实施例六提供的另一种第一节点的结构示意 图，该第一节点110包括处理器111、存储器112及存储在所述存储器112上并可在所述处理器111上运行的计算机程序；所述处理器111执行所述计算机程序时实现如下步骤：
所述第一节点作为分布式单元(DU)侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
与第一有效随机接入资源重叠；
位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
本公开实施例中，优先保证DU侧的随机接入资源是为了保证一些legacy UE的正确理解。对于DU侧的其他上行资源，则需要让步于MT侧的随机接入资源，也即MT侧的随机接入资源优先于DU侧其他上行资源，以保证MT侧回传链路的传输。另外，DU侧在MT侧的随机接入资源之前的N个符号内也不接收上行资源(DU侧的随机接入资源除外)，目的是为了上下行转换。
可选的，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
与第二随机接入资源和/或第二有效随机接入资源不重叠；
与第一同步信号/广播信道块不重叠；
位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
本公开实施例的具体工作过程与上述方法实施例二中的一致，故在此不再赘述，详细请参阅上述实施例二中方法步骤的说明。
本公开实施例七提供一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现上述实施例一中任一种有效随机接入资源的确定方法中的步骤或者实现上述实施例二中任一种信号接收方法中的步骤。详细请参阅以上对应实施例中方法步骤的说明。
本公开实施例中的终端可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或其他业务数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经 无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiation Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端也可以称为系统、订户单元(Subscriber Unit)、订户站(Subscriber Station)，移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、终端(User Device or User Equipment)，在此不作限定。
上述计算机可读存储介质包括永久性和非永久性、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (15)

  1. 一种有效随机接入资源的确定方法，应用于第一节点，包括：
    确定第一有效随机接入资源，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
    与第二随机接入资源和/或第二有效随机接入资源不重叠；
    与第一同步信号/广播信道块不重叠；
    位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
  2. 根据权利要求1所述的方法，所述第一节点为具有接入和/或回传能力的节点。
  3. 根据权利要求1所述的方法，其中，所述第二随机接入资源和/或所述第二有效随机接入资源位于第三资源或第四资源内。
  4. 根据权利要求3所述的方法，其中，所述第三资源为所述第一节点作为分布式单元DU侧的上行必用UL hard资源；所述第四资源为所述第一节点作为分布式单元DU侧的上行可用UL soft资源。
  5. 根据权利要求1所述的方法，其中，所述第二随机接入资源和/或所述第二有效随机接入资源包括：配置给终端的随机接入资源，和/或，配置给下级第一节点的随机接入资源。
  6. 根据权利要求1所述的方法，其中，所述第一同步信号/广播信道块位于第五资源或第六资源内。
  7. 根据权利要求6所述的方法，其中，所述第五资源为所述第一节点作为分布式单元DU侧的下行必用DL Hard资源；所述第六资源为所述第一节点作为分布式单元DU侧的下行可用DL soft资源。
  8. 根据权利要求1所述的方法，其中，所述第一同步信号/广播信道块资源包括：所述第一节点发送的用于终端接入和测量的同步信号/广播信道块资源，和/或，所述第一节点发送的用于节点间发现的同步信号/广播信道块资源。
  9. 根据权利要求1所述的方法，还包括：
    所述第一节点作为分布式单元DU侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
    与所述第一有效随机接入资源重叠；
    位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
  10. 一种信号接收方法，应用于第一节点，包括：
    所述第一节点作为分布式单元DU侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
    与第一有效随机接入资源重叠；
    位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
  11. 根据权利要求10所述的信号接收方法，其中，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
    与第二随机接入资源和/或第二有效随机接入资源不重叠；
    与第一同步信号/广播信道块不重叠；
    位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
  12. 一种第一节点，包括：
    确定模块，用于确定第一有效随机接入资源，所述第一有效随机接入资源为满足第一预设条件的第一随机接入资源，所述第一预设条件包括以下至少之一：
    与第二随机接入资源和/或第二有效随机接入资源不重叠；
    与第一同步信号/广播信道块资源不重叠；
    位于所述第二随机接入资源之后，且与所述第二随机接入资源和/或所述第二有效随机接入资源之间间隔的符号个数大于或等于N，所述N为大于或等于0的整数。
  13. 一种第一节点，包括：
    接收模块，用于所述第一节点作为分布式单元DU侧在满足第二预设条件的上行资源上不接收上行信号，所述第二预设条件包括以下至少之一：
    与第一有效随机接入资源重叠；
    位于所述第一有效随机接入资源之前，且与所述第一有效随机接入资源之间间隔的符号个数小于N，所述N为大于或等于0的整数。
  14. 一种第一节点，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述计算机程序时实现如权利要求1至9中任一项所述的有效随机接入资源的确定方法或者实现如权利要求10或11所述的信号接收方法。
  15. 一种计算机可读存储介质，其上存储有计算机程序，其中，所述计算机程序被处理器执行时实现如权利要求1至9中任一项所述的有效随机接入资源的确定方法中的步骤或者实现如权利要求10或11所述的信号接收方法中的步骤。
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