WO2019192524A1 - 接入选择方法及装置 - Google Patents

接入选择方法及装置 Download PDF

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Publication number
WO2019192524A1
WO2019192524A1 PCT/CN2019/081281 CN2019081281W WO2019192524A1 WO 2019192524 A1 WO2019192524 A1 WO 2019192524A1 CN 2019081281 W CN2019081281 W CN 2019081281W WO 2019192524 A1 WO2019192524 A1 WO 2019192524A1
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WIPO (PCT)
Prior art keywords
information
cell
iab
node
access
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PCT/CN2019/081281
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English (en)
French (fr)
Inventor
罗薇
陈琳
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US17/042,266 priority Critical patent/US11470547B2/en
Priority to CA3095500A priority patent/CA3095500A1/en
Priority to EP19781779.4A priority patent/EP3780746A4/en
Priority to AU2019249622A priority patent/AU2019249622B2/en
Publication of WO2019192524A1 publication Critical patent/WO2019192524A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • 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
    • H04W88/14—Backbone network devices

Definitions

  • the present disclosure relates to the field of communications, for example, to an access selection method and apparatus.
  • a relay link supporting wireless backhaul transmission is proposed for implementing dense network deployment.
  • the RN provides functions and services similar to those of an Evolved Node Base Station (eNB) to a user equipment (UE) that accesses its cell.
  • eNB Evolved Node Base Station
  • UE user equipment
  • the radio interface between the RN and the UE is called an "access link.”
  • AL Access Link
  • the RN accesses a base station eNB serving it in a manner similar to a normal UE through a radio interface, and an eNB serving the RN is called a donor base station (Donor eNB, DeNB).
  • the radio interface between the RN and the DeNB is called a "backhaul link (BL)”.
  • IAB Integrated Access Backhaul
  • IAB donor Only the host IAB (IAB donor) is directly connected to the core network. Therefore, the ordinary IAB transmits data to the host IAB to communicate with the core network.
  • IAB node A is connected to the core network through an optical fiber, and is an IAB donor, and the IAB nodes B and C are not connected to the core network, and are ordinary IABs.
  • the IAB can transmit data to the IAB donor through multiple IABs as relays.
  • the IAB is hierarchical, and the so-called IAB level represents the IAB transmission to the IAB.
  • the IAB of the level n+1 is the UE for the IAB of the level n
  • the IAB of the level of n is the level of the n.
  • the IAB is the service community. If the IAB of level n+1 is connected to the IAB of level n in the UE mode through the Uu port, we call the IAB of level n as the parent node of the IAB of level n+1, and the level is n+1.
  • the IAB is a child of the IAB of level n.
  • An embodiment of the present disclosure provides an access selection method and apparatus, so as to at least solve the problem that the UE communicates with the core network through multiple IABs in the related art, and there is no reasonable IAB selection method, resulting in a large communication delay and overhead. The problem.
  • an access selection method including: a first transmission node receives configuration information of a parent node or configuration information of a neighboring cell; and the first transmission node performs measurement according to the configuration information. Monitor or select the parent node to access.
  • an access selection method including: user equipment UE receiving cell priority information, cell level information, or integrated access backhaul host IAB donor information; Level information, the cell level information, or the IAB donor information is measured or cell reselected; wherein the IAB donor information includes at least one of: connection hop count, level, path cost, load/congestion;
  • the IAB donor corresponding to the donor information includes an IAB base station IAB donor Distributed Unit (DU).
  • DU IAB base station IAB donor Distributed Unit
  • an access selection apparatus which is applied to a transmission node, and includes: a receiving module configured to receive configuration information of a parent node or configuration information of a neighboring cell; and a selection module configured to The configuration information is used to measure, monitor, or select the parent node to access.
  • an access selection apparatus which is applied to a user equipment UE, and includes: a receiving module, configured to receive cell priority information, cell level information, or IAB donor information; Performing measurement or cell reselection according to the cell priority information, the cell level information, or the IAB donor information;
  • the IAB donor information includes at least one of the following: a connection hop count, a hierarchy, a path overhead, and a load/congestion; and the IAB donor corresponding to the IAB donor information includes an IAB base station or an IAB donor DU.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to execute the method of any of the above embodiments at runtime.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being configured to execute the computer program to perform any of the above implementations The method described in the example.
  • FIG. 1 is a schematic diagram of an IAB link in the related art
  • FIG. 2 is a schematic diagram of a multi-hop backhaul of an IAB node in the related art
  • FIG. 3 is a flow chart of an access selection method in accordance with an embodiment of the present disclosure.
  • FIG. 4 is a flow chart of another access selection method in accordance with an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of still another access selection method according to an embodiment of the present disclosure.
  • FIG. 6 is a structural block diagram of an access selection apparatus according to an embodiment of the present disclosure.
  • FIG. 7 is a structural block diagram of another access selection apparatus according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure.
  • the donor in the scenario where the central unit CU and the distributed unit DU are not separated, the donor may be referred to as an IAB donor or a donor base station.
  • the IAB donor refers to the IAB donor DU
  • the IAB donor DU refers to the DU with wired connection
  • the IAB donor DU can be wired to the IAB donor CU.
  • the IAB donor DU and the IAB donor CU may be built in, or may be wired only, in which case an IAB donor CU can wire multiple IAB donor DUs.
  • FIG. 3 is a flowchart of an access selection method according to an embodiment of the present disclosure. As shown in FIG. 3, the flow includes steps 302 and 304.
  • Step 302 The first transmission node receives configuration information of the parent node or configuration information of the neighboring cell.
  • the foregoing configuration information includes at least one of the following: cell priority information, cell level information, system information, resource configuration information, and cell access information used to indicate the hop count of the integrated access backhaul host IAB donor.
  • the system information includes at least one of the following: a primary information block (MIB), Minimum System Information (minimum SI), IAB selection threshold, IAB reselection offset, IAB donor identifier, cell priority information, cell level information, IAB access control parameters, IAB random access parameters, IAB prohibition Indication; wherein the IAB access control parameters include: IAB-specific access The IAB-specific access
  • the foregoing resource information includes at least one of the following: time resource information, frequency resource information, and spatial resource information; wherein the time resource information includes at least one of: a subframe offset and a period, a symbol offset, and a period, a slot offset, and a period; the frequency domain resource information includes at least one of the following: carrier index information, bandwidth portion index indication information, and resource block index indication information; the spatial resource information includes at least one of the following: a beam Index indication information, beam direction indication information.
  • Step 304 The first transmitting node performs measurement, monitoring, or selection of the accessed parent node according to the configuration information.
  • the first transmission node receives configuration information of the parent node or configuration information of the neighboring cell; the first transmission node performs measurement, monitoring, or selection of the accessed parent node according to the configuration information. That is to say, the selected parent node is selected according to the received configuration information, thereby solving the problem that in the IAB multi-hop network in the related art, the UE does not have a reasonable IAB selection method in the process of communicating with the core network through multiple IABs.
  • the problem of communication delay and overhead is large, thereby achieving the effect of reducing communication delay and overhead.
  • the foregoing first transmission node includes but is not limited to: an IAB, a relay, and a DU.
  • step 304 may be performed first, and then 302.
  • the second transmission node has a higher level than the first transmission node; or the second transmission node is a parent node of the first transmission node; or the second transmission node is the first A serving cell of a transmitting node.
  • the receiving, by the first transmitting node, the configuration information of the neighboring cell includes:
  • Step 11 The first transmitting node receives system information of a neighboring cell that is sent by the second transmitting node by using a Radio Resource Control (RRC) proprietary message.
  • RRC Radio Resource Control
  • the method before the second transmitting node sends the system information of the neighboring cell by using the RRC proprietary information, the method further includes:
  • Step 21 The second transmission node receives the system information reported by the third transmission node.
  • the receiving, by the second transmitting node, the system information reported by the third transmitting node includes:
  • Step 31 The second transmitting node receives the system information that is reported by the third transmitting node by using the RRC dedicated signaling, where the RRC dedicated signaling includes at least one of the following: an uplink proprietary control message, a connection establishment request information, and a user.
  • the RRC dedicated signaling includes at least one of the following: an uplink proprietary control message, a connection establishment request information, and a user.
  • the system information reported by the third transmitting node includes system information of a third cell of the third transmitting node or system information of a neighboring cell of the third transmitting node.
  • the foregoing first transmitting node performs monitoring according to the configuration information, including:
  • Step 41 The first transmitting node monitors system information of the neighboring cell on the resource corresponding to the resource information according to the resource information.
  • the foregoing first transmitting node performs measurement according to the foregoing configuration information, including one of the following:
  • Step 51 If the signal measurement result of the current cell of the first transmission node is higher than a preset threshold, the first transmission node does not measure the cell with a cell priority or a cell level lower than the current cell; if the first transmission node If the signal measurement result of the current cell is lower than the preset threshold, the first transmission node performs measurement on a cell with a cell priority or a cell level lower than the current cell;
  • Step 52 The first transmitting node performs measurement on a cell with a cell priority or a cell level higher than a current cell.
  • the foregoing second transmission node includes one of the following: an IAB, an IAB donor, a relay, a base station, a Centralized Unit (CU), and a DU.
  • the foregoing third transmission node includes one of the following: an IAB, a relay, and a DU.
  • the CU has the highest level and the donor base station has the highest level.
  • the method further includes: when the first transmission node is an IAB node, the IAB node sends the obtained cell identity of the IAB donor to the access and mobility management through the NG interface.
  • Access and Mobility Management Function AMF
  • AP F1 Access Point
  • the IAB node type is indicated in the F1 setup message
  • the IAB node type is indicated when the control plane interface NG-C is established between the AMFs.
  • FIG. 4 is a flowchart of another access selection method according to an embodiment of the present disclosure. As shown in FIG. 4, the process includes steps 402 to 404.
  • Step 402 The user equipment UE receives the cell priority information, the cell level information, or the integrated access backhaul host IAB donor information.
  • the cell priority information includes at least one of the following: a cell priority information of the current cell, and cell priority information of the neighboring cell; the cell level information includes at least one of the following: a cell level information of the local cell. Cell level information of neighboring cells.
  • Step 404 The UE performs measurement or cell reselection according to the cell priority information, the cell level information, or the IAB donor information.
  • the IAB donor information includes at least one of the following: connection hop count, level, path cost, load/ congestion.
  • the IAB donor includes an IAB base station or an IAB donor DU.
  • the user equipment UE receives the cell priority information, the cell level information, or the integrated access backhaul host IAB donor information; the UE performs measurement or cell reselection according to the cell priority information, the cell level information or the IAB donor information;
  • the IAB donor information includes at least one of the following: connection hop count, level, path cost, and load/congestion.
  • the IAB donor includes an IAB base station or an IAB donor DU. That is, the UE may perform measurement or cell reselection according to the cell priority information, the cell layer level information, or the integrated access backhaul host IAB donor information, thereby solving the problem that the UE passes multiple IABs in the IAB multi-hop network in the related art.
  • IAB selection method In the process of communicating with the core network, there is no reasonable IAB selection method, which leads to the problem of large communication delay and overhead, thereby achieving the effect of reducing communication delay and overhead.
  • step 404 may be performed first, and then step 402 is performed.
  • the cell priority information or the cell level information is carried by the system information or the radio resource control RRC-specific message.
  • the UE ignores cell priority information or cell level information in the system information.
  • performing, by the foregoing UE, the measurement according to the cell priority information or the cell level information includes one of the following:
  • Step 61 If the signal measurement result of the current cell of the UE is higher than a preset threshold, the UE does not perform measurement on a cell with a cell priority or a cell level lower than the current cell; if the signal measurement result of the current cell of the UE is lower than the foregoing Presetting the threshold, the UE performs measurement on a cell with a cell priority or a cell level lower than the current cell;
  • Step 62 The UE performs measurement on a cell with a cell priority or a cell level higher than the current cell.
  • the performing cell reselection by the UE according to the cell priority information or the cell level information includes:
  • Step 71 The UE performs cell reselection on a cell whose cell priority information or cell level information is higher than a current cell.
  • the UE performing cell reselection includes: the UE searches for a cell with the strongest signal at multiple frequency points, reads system information, obtains cell level information, and the like. The cell with the highest IAB level is selected among all the suitable cells searched.
  • the performing cell reselection by the UE includes: the UE searches for the cell with the strongest signal at multiple frequency points, reads the system information, obtains the level of the cell and the neighboring cell, and finds the cell identifier with the highest cell level, and then performs detection. If the cell with the strongest signal is selected and the suitable cell condition is met, the cell camp is selected.
  • the UE should select a relay node with a higher level as much as possible, so that the hops can be reached with less hops. IAB Donor, then the UE needs to know the hierarchical information of the cell before accessing the cell.
  • the IAB carries the IAB level identifier in the MIB/System Information Block (SIB). If it is the IAB Donor, the level is 0.
  • SIB MIB/System Information Block
  • the UE can know the level of the IAB.
  • the cell does not include the hierarchical information in the MIB/SIB, but includes the cell priority information.
  • the higher the priority of the cell the higher the priority, but the two are not one-to-one correspondence, and the cell may be based on its own Hierarchical information, current load or capability, the priority information of each cell is determined by itself or the IAB donor.
  • Step 81 The UE searches for the cell with the strongest signal at multiple frequency points, reads the SIB information, and obtains IAB level information or cell priority information, Public Land Mobile Network (PLMN) information, and the like.
  • PLMN Public Land Mobile Network
  • step 82 the UE finds a suitable cell that satisfies the s criterion according to the measurement result.
  • Step 83 The UE selects a cell with the highest IAB level or the highest cell priority information among all the cells that meet the requirements.
  • the IAB can also broadcast the system information through the neighboring layer level list. After receiving this information, it can be saved locally.
  • the advantage of this is that the UE can be configured to receive hierarchical information or cell priority information without sequentially reading the system information of each cell, which reduces the delay of cell selection.
  • Step 91 The UE searches for the cell with the strongest signal at multiple frequency points, reads the SIB information, and obtains the hierarchical or cell priority information of the IAB and the neighboring IAB cell.
  • Step 92 After detecting the cell with the highest IAB level or the cell priority information, the cell with the strongest signal is selected, and the cell with the strongest signal is selected, and if the selected cell satisfies the suitable cell condition, the cell camp is selected. If the selected cell does not satisfy the suitable cell condition, the cell with the lower level or the cell priority information is continuously selected for detection, and if the selected cell satisfies the suitable cell condition, the cell is selected to be camped. If the cell that continues to be selected does not satisfy the suitable cell condition, the above process is continued, and so on.
  • the UE has selected the cell for access, but still needs to measure the neighboring area, including:
  • Step 101 The UE receives cell priority information or cell level information.
  • the cell priority information or the cell level information includes at least: cell priority information or cell level information of the current cell; cell priority information or cell level information of the neighboring cell.
  • the cell priority information or the cell level information is carried by system information or an RRC-specific message.
  • the UE may ignore the cell priority information or the cell level information in the system information.
  • Step 102 The UE performs measurement according to the cell priority information or the cell level information, including:
  • the UE does not perform measurement on the cell with the cell priority or the cell level lower than the current cell. Otherwise, the UE may have the cell priority or the cell level lower than the current cell. The cell performs measurements.
  • the UE performs cell reselection evaluation on the cell with the cell priority information or the cell level information higher than the current cell.
  • the IAB of each level will only be connected to all or part of the IAB of the same level and the IAB of the upper level.
  • the level of the donor IAB is 0, the UE accesses the level of the IAB.
  • the transmission path of the core network and the UE is sequentially passed through the IAB of the level 1, 2, .. N.
  • the IAB of the level n+1 is the UE for the IAB of the level n
  • the IAB of the level of n is the level of the n.
  • the IAB is the base station. If the IAB of level n+1 is connected to the IAB of level n in the UE mode through the Uu port, we call the IAB of level n the parent node of the IAB of level n+1.
  • This implementation describes how to select a parent IAB node as its serving cell when the IAB initially works.
  • the IAB selects the Parent IAB node/Donor to be different from the cell selection/reselection of the conventional UE.
  • the threshold used by the UE for Cell selection/reselection is only required to guarantee the basic coverage, but for the IAB node.
  • the channel quality of the IAB node and the parent IAB node/donor is not too bad. Therefore, consider defining the parent IAB node selection threshold Th1.
  • the neighbor IAB node/donor is used as a candidate when the link measurement result is Reference Signal Receiving Power (RSRP)/Reference Signal Receiving Quality (RSRQ)>Th1.
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • Step 111 The parent IAB node sends system information, including an IAB selection threshold, an IAB reselection offset, an IAB donor identifier, priority information or cell level information, and a PLMN information of the IAB donor.
  • system information including an IAB selection threshold, an IAB reselection offset, an IAB donor identifier, priority information or cell level information, and a PLMN information of the IAB donor.
  • the level information of the AB identifies the number of hops from the IAB to the IAB donor.
  • Step 112 The IAB selects a threshold according to the above IAB, and detects that the link measurement result with the neighboring IAB node/donor is greater than the IAB selection threshold, and uses the IAB as a candidate parent node.
  • the IAB detects the IAB based on the IAB reselection offset information, and detects that the difference between the link measurement result with the surrounding neighbor IAB node/donor and the currently selected parent node is greater than the IAB selection threshold. As a candidate for reselection of the parent node.
  • the manner in which the IAB selects the parent node is:
  • Step 121 The IAB searches for the cell with the strongest signal at multiple frequency points, reads the SIB information, and obtains IAB level information or cell priority information, PLMN information, and the like.
  • step 122 the IAB finds a suitable cell that satisfies the s criterion according to the measurement result.
  • the IAB selects the cell with the highest IAB level or the highest cell priority information among all the cells that meet the requirements.
  • the measurement operation still needs to be performed, including:
  • Step 141 The IAB receives configuration information of a neighboring cell, including a cell priority or a cell level, and measures configuration information.
  • Step 142 The IAB performs measurement according to the configuration information, including:
  • the IAB does not perform measurements on cells whose cell priority or cell level is lower than the current cell. Otherwise, the IAB performs measurements on cells whose cell priority or cell level is lower than the current cell.
  • the IAB performs measurements on cells whose cell priority information or cell level information is higher than the current cell.
  • the IAB preferentially selects the parent IAB with a higher level, so that the number of hops can be used to reach the IAB Donor. Then, before accessing the cell, the UE needs to know the hierarchical information of the cell and whether to support the IAB information. . In addition, the IAB should also consider the current load information of the upper layer node to avoid frequent congestion caused by accessing the high load IAB. Alternatively, when the current load of the IAB is high or multiple other IABs are connected as the lower layer IAB, it may be decided that the new IAB is no longer accessed. Then, the IAB barring indication may be added to the MIB for indicating Access to the IAB is prohibited but access to normal UEs is not prohibited.
  • the IAB carries the IAB access prohibition indication information in the system information.
  • the IAB ignores the indication information.
  • the IAB detects the message, the IAB is not used as a candidate for reselection. Community.
  • the parent IAB node/donor sends access control related information to indicate whether to allow access to the new IAB node.
  • the reason for access control may be due to operation control, or considering the traffic situation, and also considering the congestion or bandwidth of the backhaul link.
  • the congestion of the backhaul link may be represented by an air interface resource occupancy ratio, a bandwidth, an idle bandwidth, and a spectrum efficiency.
  • the data transmission that the newly accessed IAB node can achieve is often limited to the bottleneck link on the multi-hop path of the donor, that is, the channel quality, and the throughput that can be provided is the lowest. Or the most congested specific hop.
  • the congestion of the bottleneck link of the specific IAB Donor can be broadcast by the parent IAB (parent IAB) node.
  • the remaining bandwidth and throughput information of the IAB Donor wireline link can be broadcast for IAB.
  • the node performs the parent IAB node/donor selection.
  • the network side IAB allocates a specific access identifier or access level, allocates a set of IAB-specific access parameters based on the access identifier or access level, and sends the information through the system information.
  • the IAB receiving the access parameter performs an access control operation based on the parameter.
  • IAB1 is the parent of IAB2.
  • Step 151 The IAB2 receives the system information of the parent node IAB1, where the system information includes: an IAB access prohibition indication information or a congestion condition or bandwidth information based on an IAB-specific access control parameter or a backhaul link.
  • the congestion of the backhaul link may be represented by an air interface resource occupancy ratio, a bandwidth, an idle bandwidth, and a spectrum efficiency.
  • the data transmission that the newly accessed IAB node can achieve is often limited to the bottleneck link on the multi-hop path of the donor, that is, the channel quality, and the throughput that can be provided is the lowest. Or the most congested specific hop. Therefore, the congestion of the bottleneck link of the specific IAB Donor can be broadcast by the parent IAB node. In addition, the remaining bandwidth and throughput information of the IAB Donor wireline link can be broadcasted for the IAB node to perform the parent IAB node/donor selection.
  • step 152 the IAB performs an access control operation based on the received information.
  • the IAB When the IAB is connected to other IABs, it can pass the tdd-uplink (UL)-downlink (Down-Link, DL)-common configuration for the Time Division Duplex (TDD) system.
  • (configurationCommon) sets all the time slots during the execution of the random access to the X symbol, suspends the service to the access UE, and then transmits the preamble according to the random access resource position broadcasted by the upper layer IAB, and then randomly connects
  • the message 2 is monitored, the resource of the message 3 is obtained, and then the message 3 is sent, and the message 4 is continuously monitored and waiting to be received.
  • the IAB In order to reduce the impact on the serving UE, the IAB needs to shorten the delay of random access. Therefore, the parent node of the IAB configures the resources of the IAB to transmit the preamble different from the UE for the IAB; the IAB receives the resource information of the message 2 or the message 4; the size of the IAB random access response window, and the random access conflict resolution time, The upper layer IAB preferentially responds to the IAB.
  • IAB1 is the parent of IAB2.
  • Step 161 The IAB2 receives system information of the parent node IAB1, where the system information includes: an IAB random access parameter.
  • the IAB random access parameter includes: a resource for the IAB to transmit the preamble; an IAB receiving the resource information of the message 2 or the message 4; an IAB random access response window size, and a random access collision resolution time.
  • step 162 the IAB performs a random access operation based on the received information.
  • Step 171 The IAB1 sends resource configuration information of the neighboring cell.
  • the system information of the neighboring cell transmitted by the IAB1 through the RRC proprietary information includes, but is not limited to, an RRC reconfiguration message.
  • the resource configuration information includes at least: resource information that the first transmission node communicates with the terminal, resource information of communication between the first transmission node and the second transmission node, and the first transmission node sends resource information of the system information.
  • the resource information includes: time resource information; frequency resource information, and space resource information.
  • the time resource information includes: a subframe offset and a period; a symbol offset and a period; a slot offset and a period.
  • the frequency domain resource information includes: carrier index information; bandwidth part index indication information; and resource block index indication information.
  • the spatial resource information includes: beam index indication information; beam direction indication information.
  • IAB1 includes one of the following: IAB, IAB donor, relay, base station, CU and DU.
  • IAB2 includes one of the following: IAB, Relay, and DU.
  • Step 172 The IAB2 receives the resource configuration information of the neighboring cell sent by the IAB1.
  • Step 173 The IAB2 node monitors system information of the neighboring cell at the resource location according to the resource configuration information.
  • IAB donor is the parent of IAB1 and the level is 0.
  • IAB1 is the parent of IAB2 and IAB2 is the parent of IAB3.
  • IAB (IAB-X) is numbered X.
  • Access to the network, the level is 1.
  • Step 181 The IAB-X reports its own system information to the IAB donor through RRC dedicated signaling, where the RRC dedicated signaling may include: an uplink dedicated control channel message (UL-DCCH-Message); connection suggestion request information; UE auxiliary information; relay auxiliary information; IAB auxiliary information; uplink information transmission.
  • RRC dedicated signaling may include: an uplink dedicated control channel message (UL-DCCH-Message); connection suggestion request information; UE auxiliary information; relay auxiliary information; IAB auxiliary information; uplink information transmission.
  • Step 182 After receiving the system information of the IAB-X, the IAB donor sends the system information to the child node IAB1 through RRC dedicated signaling.
  • the RRC dedicated signaling may include: an RRC reconfiguration message; a relay or an IAB control information. .
  • Step 183 After receiving the system information of the IAB-X, the IAB1 sends the system information to the child node IAB2 through RRC dedicated signaling.
  • Step 184 After receiving the system information of the IAB-X, the IAB2 sends the system information to the child node IAB3 through RRC dedicated signaling.
  • the process may be notified to other IABs through the foregoing steps 181 to 184.
  • IAB1, IAB2, and IAB3 all know the system information of IAB-X, and they can all measure IAB-X according to the measurement configuration.
  • the IAB donor can use the IAB-X.
  • the cell priority or cell level information is sent layer by layer.
  • IAB1 and IAB3 measurements are performed on the IAB-X only if the signal measurement of the cell is below a given threshold, otherwise the measurement will not be performed.
  • Step 191 When the IAB node accesses the parent node in the manner of the UE, the system information is monitored, and the cell identifier of the IAB donor is obtained.
  • Step 192 The IAB node sends the obtained cell identity of the IAB donor to the Access and Mobility Management Function (AMF) through the NG interface.
  • AMF Access and Mobility Management Function
  • Step 193 The AMF sends an IAB Donor's Internet Protocol (IP) address to the IAB node.
  • IP Internet Protocol
  • the IAB node type can be indicated in the F1 setup message.
  • an NG-C connection is established between the IAB donor and the AMF, Indicates the IAB node type.
  • the method according to the foregoing embodiment can be implemented by means of software plus a general hardware platform, or can be implemented by hardware.
  • the technical solution of the present disclosure which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as a read-only memory (Read-Only Memory). , ROM)/Random Access Memory (RAM), disk, CD-ROM, including a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, a network device, etc.) to execute the present
  • a terminal device which may be a mobile phone, a computer, a server, a network device, etc.
  • An access selection device is provided in the embodiment, and the device is configured to implement the foregoing embodiments and implementation manners, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 6 is a structural block diagram of an access selection apparatus according to an embodiment of the present disclosure, applied to a transmission node, as shown in FIG. 6, the apparatus includes:
  • the first receiving module 62 is configured to receive configuration information of the parent node or configuration information of the neighboring cell.
  • the foregoing configuration information includes at least one of the following: cell priority information, cell level information, system information, resource configuration information, and cell access information used to indicate the hop count of the integrated access backhaul host IAB donor.
  • the system information includes at least one of the following: a primary system information block MIB, a minimum system information minimum SI, an IAB
  • the foregoing resource information includes at least one of the following: time resource information, frequency resource information, and spatial resource information; wherein the time resource information includes at least one of: a subframe offset and a period, a symbol offset, and a period, a slot offset, and a period; the frequency domain resource information includes at least one of the following: carrier index information, bandwidth portion index indication information, and resource block index indication information; the spatial resource information includes at least one of the following: a beam Index indication information, beam direction indication information.
  • the first selection module 64 is configured to perform measurement, monitoring, or selective access to the parent node according to the configuration information.
  • the configuration information of the parent node or the configuration information of the neighboring cell is received; and the parent node that measures, monitors, or selects access according to the configuration information. That is to say, the selected parent node is selected according to the received configuration information, thereby solving the problem that in the related art IAB multi-hop network, when the UE communicates with the core network through multiple IABs, there is no reasonable IAB selection method. This leads to the problem of large communication delay and overhead, which in turn reduces the effect of communication delay and overhead.
  • the foregoing first transmission node includes but is not limited to: an IAB, a relay, and a DU.
  • the second transmission node has a higher level than the first transmission node; or the second transmission node is a parent node of the first transmission node; or the second transmission node is the first A serving cell of a transmitting node.
  • the first receiving module 62 is further configured to receive system information of a neighboring cell that is sent by the second transit node to control the RRC proprietary message by using the radio resource.
  • the method before the second transmitting node sends the system information of the neighboring cell by using the RRC proprietary information, the method further includes: receiving, by the second transmitting node, the system information reported by the third transmitting node.
  • the second transmission node receives the system information reported by the third transmission node, and the second transmission node receives the system information that is reported by the third transmission node by using the RRC dedicated signaling, where the RRC dedicated signaling includes the following at least One of: an uplink proprietary control message, connection establishment request information, user equipment UE auxiliary information, relay auxiliary information, IAB auxiliary information, and uplink transmission information.
  • the system information reported by the third transmitting node includes system information of a third cell of the third transmitting node or system information of a neighboring cell of the third transmitting node.
  • the first selection module 64 is further configured to monitor system information of the neighboring cell on the resource according to the resource information.
  • the first selecting module 64 is further configured to: if the signal measurement result of the current cell of the first transmitting node is higher than a preset threshold, the first transmitting node does not have a cell priority or the cell level is lower than the current current The cell of the cell performs measurement; if the signal measurement result of the current cell of the first transmission node is lower than the preset threshold, the first transmission node performs measurement on a cell with a cell priority or a cell level lower than the current cell; or The first selection module 64 is further configured to perform measurement on a cell with a cell priority or a cell level higher than the current cell.
  • the second transmission node includes one of the following: an IAB, an IAB donor, a relay, a base station, a CU, and a DU.
  • the foregoing third transmission node includes one of the following: an IAB, a relay, and a DU.
  • the CU has the highest level and the donor base station has the highest level.
  • the IAB node when the first transmission node is an IAB node node, the IAB node sends the obtained cell identity of the IAB donor to the access and mobility management module AMF through the NG interface; or, the IAB node distributed processing unit
  • the IAB node type is indicated in the F1 setup message; or the IAB donor indicates the IAB node when establishing an NG-C connection with the AMF. Types of.
  • An access selection device is also provided in this embodiment, and the device is configured to implement the foregoing embodiments and implementation manners, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 7 is a structural block diagram of another access selection apparatus, which is applied to a user equipment UE, as shown in FIG. 7, the apparatus includes:
  • the second receiving module 72 is configured to receive cell priority information, cell level information, or integrated access backhaul host IAB donor information.
  • the cell priority information includes at least one of the following: a cell priority information of the current cell, and cell priority information of the neighboring cell; the cell level information includes at least one of the following: a cell level information of the local cell. Cell level information of neighboring cells.
  • the second selection module 74 is configured to perform measurement or cell reselection according to the cell priority information, the cell level information or the IAB donor information, where the IAB donor information includes at least one of the following: connection hop count, level, path cost , load / congestion.
  • the IAB donor includes an IAB base station or an IAB donor DU.
  • the user equipment UE receives the cell priority information, the cell level information, or the integrated access backhaul host IAB donor information; the UE performs measurement or the cell according to the cell priority information, the cell level information, or the IAB donor information. Reselection; wherein the IAB donor information includes at least one of the following: connection hop count, level, path cost, load/congestion.
  • the IAB donor includes an IAB base station IAB donor DU. That is, the UE may perform measurement or cell reselection according to the cell priority information, the cell layer level information, or the integrated access backhaul host IAB donor information, thereby solving the problem that the UE passes multiple IABs in the IAB multi-hop network in the related art. In the process of communicating with the core network, there is no reasonable IAB selection method, which leads to the problem of large communication delay and overhead, thereby achieving the effect of reducing communication delay and overhead.
  • the cell priority information or the cell level information is carried by the system information or the radio resource control RRC-specific message.
  • the UE ignores cell priority information or cell level information in the system information.
  • the second selecting module 74 is further configured to perform, when the signal measurement result of the current cell of the UE is higher than a preset threshold, perform measurement on a cell with a cell priority or a cell level lower than the current cell; When the signal measurement result of the current cell of the UE is lower than the preset threshold, performing measurement on a cell with a cell priority or a cell level lower than the current cell; or
  • the second selection module 74 is further configured to perform measurement on a cell with a cell priority or a cell level higher than the current cell.
  • the second selection module 74 is further configured to perform cell reselection on the cell with the cell priority information or the cell level information higher than the current cell.
  • the above one or more modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the above modules are all located in the same processor; or, the above multiple modules are in any combination.
  • the forms are located in different processors.
  • Embodiments of the present disclosure also provide a storage medium having stored therein a computer program, wherein the computer program is configured to execute the method of any of the above embodiments at runtime.
  • the above storage medium may be arranged to store a computer program for performing the following steps:
  • the first transit node receives configuration information of the parent node or configuration information of the neighboring cell.
  • the first transmitting node performs measurement, monitoring, or selecting a parent node for access according to the configuration information.
  • the storage medium is further configured to store a computer program for performing the following steps:
  • the user equipment UE receives the cell priority information, the cell level information, or the integrated access backhaul host IAB donor information.
  • the UE performs measurement or cell reselection according to the cell priority information, the cell level information, or the IAB donor information.
  • the IAB donor information includes at least one of the following: connection hop count, level, path cost, load/ Congestion; the IAB donor includes an IAB base station or an IAB donor DU.
  • the foregoing storage medium may include, but is not limited to, a Universal Serial Bus Flash Disk (U disk), a Read-Only Memory (ROM), and a random access memory (Random). Access Memory, RAM), removable hard disk, disk or optical disk, etc. A variety of media that can store computer programs.
  • U disk Universal Serial Bus Flash Disk
  • ROM Read-Only Memory
  • RAM random access memory
  • An embodiment of the present disclosure also provides an electronic device, as shown in FIG. 8, including a memory 810 and a processor 820 having a computer program stored therein, the processor 820 being configured to execute a computer program to perform the above-described The method described in one embodiment.
  • the electronic device may further include a transmission device and an input and output device, wherein the transmission device is connected to the processor 820, and the input/output device is connected to the processor 820.
  • processor 820 described above may be configured to perform the following steps by a computer program:
  • the first transit node receives configuration information of the parent node or configuration information of the neighboring cell.
  • the first transmitting node performs measurement, monitoring, or selecting a parent node for access according to the configuration information.
  • the processor 820 is further configured to store a computer program for performing the following steps:
  • the user equipment UE receives the cell priority information, the cell level information, or the integrated access backhaul host IAB donor information.
  • the UE performs measurement or cell reselection according to the cell priority information, the cell level information, or the IAB donor information.
  • the IAB donor information includes at least one of the following: connection hop count, level, path cost, and load/congestion;
  • the IAB donor includes an IAB base station or an IAB donor DU.
  • one or more of the above-described modules or one or more steps of the present disclosure can be implemented with a general-purpose computing device, which can be centralized on a single computing device or distributed across multiple computing devices. On the network formed, in an embodiment they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different.
  • the steps shown or described are performed sequentially herein, or they are separately fabricated into one or more integrated circuit modules, or a plurality of the modules or steps are fabricated into a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

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Abstract

本文公开了一种接入选择方法，包括：第一传输节点接收母节点的配置信息或者相邻小区的配置信息；该第一传输节点根据该配置信息进行测量、监听或者选择接入的母节点。本文还公开了接入选择装置、电子装置以及存储介质。

Description

接入选择方法及装置
本申请要求在2018年04月04日提交中国专利局、申请号为201810301414.6的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及通信领域，例如，涉及一种接入选择方法及装置。
背景技术
随着无线多媒体业务的发展，人们对高数据速率和用户体验的需求日益增长，从而对传统蜂窝网络的系统容量和覆盖提出了较高要求。相关技术为了提升网络容量和覆盖，同时兼顾小区部署灵活性的需求，提出一种支持无线回程传输的中继链路用于实现密集网络的部署。我们把支持中继功能的节点称之为中继节点(Relay Node，RN)。RN对于接入其小区的用户设备(User Equipment，UE)提供与普通演进型基站(Evolved Node Base Station，eNB)类似的功能和服务，RN与UE间的无线接口称之为“接入链路(Access Link，AL)”，RN通过无线接口以类似于普通UE的方式接入一个服务于它的基站eNB，服务于RN的eNB称之为宿主基站(Donor eNB，DeNB)。RN与DeNB间的无线接口称之为“回程链路(Backhaul Link，BL)”。
随着未来通信技术支持更大的带宽且支持更大规模的多天线或者多波束的传输，为这种回程链路和接入链路共享空口资源的中继的实现提供了便利的条件，我们称之为集成接入回程(Integrated Access Backhaul，IAB)。为了进一步的提升部署的灵活性，普通的IAB不需要直接与核心网相连，只有宿主IAB(IAB donor)直接与核心网相连，因此，普通IAB将数据传输到宿主IAB才能与核心网进行通信。参见图1，IAB节点A通过光纤与核心网相连，为IAB donor，而IAB节点B和C不与核心网相连，为普通IAB。
为了进一步的提升部署的灵活性，参见图2，IAB可以经过多个IAB作为中继将数据传输到达IAB donor，换句话说，IAB是分层级的，所谓IAB层级代表着该IAB传输到达IAB donor要经过的IAB跳数。假设donor IAB的层级为0， UE接入IAB的层级为N，那么UE与核心网的传输路径是依次经过层级为1，2，..N的IAB。假设IAB与IAB之间建立连接的过程与UE和基站建立连接的过程类似，那么层级为n+1的IAB对于层级为n的IAB来说就是UE，反之，层级为n的IAB对于层级为n的IAB来说就是服务小区。如果层级为n+1的IAB通过Uu口以UE的方式接入到层级为n的IAB，我们称呼层级为n的IAB为层级为n+1的IAB的母节点，而层级为n+1的IAB为层级为n的IAB的子节点。
但在在相关技术的IAB多跳网络中，UE通过多个IAB与核心网进行通信的过程中，没有合理的IAB选择方法，导致通信时延和开销较大，对于这个问题，尚未提出有效的解决方案。
发明内容
本公开实施例提供了一种接入选择方法及装置，以至少解决相关技术中UE通过多个IAB与核心网进行通信的过程中，没有合理的IAB选择方法，导致通信时延和开销较大的问题。
根据本公开的一个实施例，提供了一种接入选择方法，包括：第一传输节点接收母节点的配置信息或者相邻小区的配置信息；所述第一传输节点根据所述配置信息进行测量、监听或者选择接入的母节点。
根据本公开的另一个实施例，提供了一种接入选择方法，包括：用户设备UE接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息；所述UE根据所述小区优先级信息、所述小区层级信息或者所述IAB donor信息进行测量或者小区重选；其中，所述IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞；所述IAB donor信息对应的IAB donor包括IAB基站IAB donor分布式单元(Distribute Unit，DU)。
根据本公开的又一个实施例，提供了一种接入选择装置，应用于传输节点，包括：接收模块，设置为接收母节点的配置信息或者相邻小区的配置信息；选择模块，设置为根据所述配置信息进行测量、监听或者选择接入的母节点。
根据本公开的再一个实施例，提供了一种接入选择装置，应用于用户设备UE，包括：接收模块，设置为接收小区优先级信息、小区层级信息或者IAB donor信息；选择模块，设置为根据所述小区优先级信息、所述小区层级信息或者所 述IAB donor信息进行测量或者小区重选；
其中，所述IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞；所述IAB donor信息对应的IAB donor包括IAB基站或者IAB donor DU。
根据本公开的还一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一实施例所述的方法。
根据本公开的还一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一实施例所述的方法。
附图说明
此处所说明的附图用来提供对本公开的理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。
图1是相关技术中IAB链路示意图；
图2是相关技术中IAB节点多跳回程示意图；
图3是根据本公开实施例的一种接入选择方法的流程图；
图4是根据本公开实施例的另一种接入选择方法的流程图；
图5是根据本公开实施例的还一种接入选择方法的示意图；
图6是根据本公开实施例的一种接入选择装置的结构框图；
图7是根据本公开实施例的另一种接入选择装置的结构框图；
图8是根据本公开实施例的一种电子装置的结构示意图。
具体实施方式
下文中将参考附图并结合实施例来说明本公开。在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。另外，对于IAB  donor，在集中单元CU和分布单元DU不分离的场景下，宿主(donor)可称之为IAB donor或donor基站。在集中单元CU和分布单元DU分离的场景下，在一实施例中，IAB donor指IAB donor DU，IAB donor DU指有有线连接的DU，IAB donor DU可以有线连接到IAB donor CU。IAB donor DU和IAB donor CU有可能内置在一起，也有可能仅仅通过有线连接，在这种情况下，一个IAB donor CU可以有线连接多个IAB donor DU。
实施例1
在本实施例中提供了一种运行于传输节点的接入选择方法，图3是根据本公开实施例的接入选择方法流程图，如图3所示，该流程包括步骤302和步骤304。
步骤302，第一传输节点接收母节点的配置信息或者相邻小区的配置信息。
在一实施例中，上述配置信息包括以下至少之一：小区优先级信息、用于指示到达集成接入回程宿主IAB donor的跳数的小区层级信息、系统信息、资源配置信息、小区接入信息、小区选择信息、IAB donor信息、IAB信息；其中，该IAB donor包括IAB基站或者IAB donor DU；该IAB donor信息或者IAB信息包括以下至少之一：连接跳数、层级、路径开销、负荷、拥塞、空口资源占用比率、带宽、空闲带宽、频谱效率、IAB Donor无线链路的剩余带宽以及吞吐量信息；其中，该系统信息包括以下至少之一：主系统信息块(Master Information Block，MIB)、最小系统信息(Minimum System Information，minimum SI)、IAB选择门限、IAB重选偏移、IAB donor标识、小区优先级信息、小区层级信息、IAB接入控制参数、IAB随机接入参数、IAB禁止接入指示；其中，该IAB接入控制参数包括：基于IAB专有的接入标识或者接入等级配置的IAB专有的控制参数；该IAB随机接入参数包括：IAB发送前导码的资源、IAB接收消息MSG 2或者MSG 4的资源信息、IAB随机接入响应窗大小、随机接入冲突解决时间；该小区接入信息包括以下至少之一：小区优先级信息、用于指示到达集成接入回程宿主IAB donor的跳数的小区层级信息；该小区选择信息包括以下至少之一：IAB选择门限、IAB重选偏移、IAB donor标识；其中，该IAB Donor标识包括：基站标识(gNB Identity，gNB ID)、小区全球标识(Number of Global Cell Identifier，NGCI)、物理小区标识(Physical Cell Identifier，PCI)、分布式单元标识DU ID； 其中，该IAB选择门限包括：小区测量选择门限、波束(beam)测量选择门限；该资源配置信息包括以下至少之一：该第一传输节点与终端通信的资源信息、该第一传输节点与第二传输节点通信的资源信息、第一传输节点发送该系统信息的资源信息。
在一实施例中，上述资源信息包括以下至少之一：时间资源信息、频率资源信息、空间资源信息；其中，该时间资源信息包括以下至少之一：子帧偏移和周期、符号偏移和周期、时隙(slot)偏移和周期；该频域资源信息包括以下至少之一：载波索引信息、带宽部分索引指示信息、资源块索引指示信息；该空间资源信息包括以下至少之一：波束索引指示信息、波束方向指示信息。
步骤304，第一传输节点根据该配置信息进行测量、监听或者选择接入的母节点。
通过本公开，第一传输节点接收母节点的配置信息或者相邻小区的配置信息；该第一传输节点根据该配置信息进行测量、监听或者选择接入的母节点。也就是说，根据接收的配置信息选择接入的母节点，进而解决了在相关技术中的IAB多跳网络中，UE通过多个IAB与核心网进行通信的过程中，没有合理的IAB选择方法，导致通信时延和开销较大的问题，进而达到了减少通信时延和开销的效果。
在一实施例中，上述第一传输节点包括但并不限于：IAB，中继，DU。
在一实施例中，步骤302和步骤304的执行顺序是可以互换的，即可以先执行步骤304，然后再执行302。
在一个实施方式中，上述第二传输节点的层级高于该第一传输节点的层级；或者，该第二传输节点为该第一传输节点的母节点；或者，该第二传输节点为该第一传输节点的服务小区。
在一实施例中，上述第一传输节点接收相邻小区的配置信息包括：
步骤11，第一传输节点接收第二传输节点通过无线资源控制(Radio Resource Control，RRC)专有消息发送的相邻小区的系统信息。
在一实施例中，在该第二传输节点通过RRC专有信息发送该相邻小区的系统信息之前，上述方法还包括：
步骤21，第二传输节点接收第三传输节点上报的系统信息。
在一个实施方式中，上述第二传输节点接收该第三传输节点上报的系统信息包括：
步骤31，第二传输节点接收该第三传输节点通过RRC专有信令上报的系统信息，其中，该RRC专有信令包括以下至少之一：上行专有控制消息、连接建立请求信息、用户设备UE辅助信息、中继辅助信息、IAB辅助信息、上行传输信息。
在一实施例中，上述第三传输节点上报的上述系统信息包括上述第三传输节点本小区的系统信息或者上述第三传输节点相邻小区的系统信息。
在一实施例中，上述第一传输节点根据该配置信息进行监听包括：
步骤41，第一传输节点根据上述资源信息，在上述资源信息对应的资源上监听上述相邻小区的系统信息。
在一个实施方式中，上述第一传输节点根据上述配置信息进行测量包括下述之一：
步骤51，若上述第一传输节点当前小区的信号测量结果高于预设阈值，则上述第一传输节点不对小区优先级或者小区层级低于上述当前小区的小区进行测量；若上述第一传输节点当前小区的信号测量结果低于上述预设阈值，则上述第一传输节点对小区优先级或者小区层级低于上述当前小区的小区进行测量；
步骤52，上述第一传输节点对小区优先级或者小区层级高于当前小区的小区执行测量。
在一实施例中，上述第二传输节点包括以下之一：IAB，IAB donor，中继，基站，集中式处理单元(Centralized Unit，CU)，DU。上述第三传输节点包括以下之一：IAB，中继，DU。
在一实施例中，CU拥有最高层级，donor基站拥有最高层级。
在一实施例中，上述方法还包括下述之一：在该第一传输节点为IAB节点(node)时，该IAB node将获得的IAB donor的小区标识通过NG接口发送给接入和移动管理模块(Access and Mobility Management Function，AMF)；IAB node DU与IAB donor CU之间建立F1接入点(Access Point，AP)连接时；或 者，在F1建立消息中指示IAB node类型；IAB donor在和该AMF之间建立控制面接口NG-C连接时指示IAB node类型。
在本实施例中提供了一种运行于用户设备的接入选择方法，图4是根据本公开实施例的另一接入选择方法流程图，如图4所示，该流程包括步骤402至步骤404。
步骤402，用户设备UE接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息；
在一实施例中，上述小区优先级信息包括以下至少之一：本小区的小区优先级信息、相邻小区的小区优先级信息；上述小区层级信息包括以下至少之一：本小区的小区层级信息、相邻小区的小区层级信息。
步骤404，该UE根据该小区优先级信息、该小区层级信息或者IAB donor信息进行测量或者小区重选；其中，该IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞。在一实施例中，该IAB donor包括IAB基站或者IAB donor DU。
通过上述步骤，用户设备UE接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息；该UE根据该小区优先级信息、该小区层级信息或者IAB donor信息进行测量或者小区重选；其中，该IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞。其中，该IAB donor包括IAB基站或者IAB donor DU。也就是说，UE可以根据小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息进行测量或者小区重选，进而解决了在相关技术中的IAB多跳网络中，UE通过多个IAB与核心网进行通信的过程中，没有合理的IAB选择方法，导致通信时延和开销较大的问题，进而达到了减少通信时延和开销的效果。
在一实施例中，步骤402和步骤404的执行顺序是可以互换的，即可以先执行步骤404，然后再执行步骤402。
在一个实施方式中，上述小区优先级信息或者上述小区层级信息通过系统信息或者无线资源控制RRC专有消息携带。
在一实施例中，若上述UE接收的RRC专有消息中包括上述小区优先级信 息或者上述小区层级信息，则上述UE忽略上述系统信息中的小区优先级信息或者小区层级信息。
在一个实施方式中，上述UE根据上述小区优先级信息或者上述小区层级信息执行测量包括下述之一：
步骤61，若上述UE当前小区的信号测量结果高于预设阈值，则上述UE不对小区优先级或者小区层级低于上述当前小区的小区执行测量；若上述UE当前小区的信号测量结果低于上述预设阈值，则上述UE对小区优先级或者小区层级低于上述当前小区的小区执行测量；
步骤62，上述UE对小区优先级或者小区层级高于上述当前小区的小区执行测量。
在一实施例中，上述UE根据上述小区优先级信息或者上述小区层级信息进行小区重选包括：
步骤71，上述UE对小区优先级信息或者小区层级信息高于当前小区的小区进行小区重选。
上述步骤71可以通过以下方式实现：UE执行小区重选包括：UE在多个频点上搜索信号最强的小区，读取系统信息，获得小区层级信息等。在所有搜索到的合适的小区(suitable cell)中选择IAB层级最高的小区。或者，UE执行小区重选包括：UE在多个频点上搜索信号最强的小区，读取系统信息，获得该小区以及相邻小区的层级，找到小区层级最高的小区标识后进行检测，从中选择信号最强的小区，且满足suitable cell条件，则选择该小区驻留。
下面结合实例以及示例对本实施例进行举例说明。
实例1
UE的小区选择：如果考虑中继节点(relay node)的场景，从减少时延的角度，UE应该尽可能选择层级较高的中继节点(relay node)，这样可以使用较少的跳数到达IAB Donor，那么UE在接入小区之前，要获知该小区的层级信息。
示例1
IAB在MIB/系统消息块(System Information Block，SIB)中携带IAB层级标识，如果是IAB Donor，则层级为0。
那么UE在读取该系统信息后，则可获知该IAB的层级。
或者，小区在在MIB/SIB中没有包括层级信息，而是包括小区优先级信息，一般来说，层级越高的小区优先级越高，但是两者并非一一对应关系，小区可以基于自己的层级信息，当前负载或者能力，由自己或者IAB donor来决定每个小区的优先级信息。
因此，UE选择小区的方式为：
步骤81，UE在多个频点上搜索信号最强的小区，读取SIB信息，获得IAB层级信息或者小区优先级信息、公共陆地移动网络(Public Land Mobile Network，PLMN)信息等。
步骤82，UE根据测量结果找到满足s准则的合适的小区。
步骤83，UE在所有满足合适的小区中选择IAB层级最高或者小区优先级信息最高的小区接入。
示例2
IAB除了在MIB/SIB中携带本IAB层级或者小区优先级信息标识外，如果IAB接收了其他周围IAB的层级或者小区优先级信息，也可以以邻区层级列表的方式通过系统信息广播下来，UE接收该信息后可以保存在本地。这样做的好处在于，可以使得UE不需依次读取每个小区的系统信息来接收层级信息或者小区优先级信息，减小了小区选择的时延。
因此，UE选择小区的方式为：
步骤91，UE在多个频点上搜索信号最强的小区，读取SIB信息，获得该IAB以及相邻IAB小区的层级或者小区优先级信息。
步骤92，获知IAB层级或者小区优先级信息最高的小区后进行检测，从中选择信号最强的小区，如果选择的小区满足suitable cell条件，则选择该小区驻留。如果选择的小区不满足suitable cell条件，则继续选择层级或者小区优先级信息低一级的小区进行检测，如果继续选择的小区满足suitable cell条件，则选择该小区驻留。如果继续选择的小区不满足suitable cell条件，则继续上述流程，依此类推。
示例3
假设UE已经选择了小区进行接入，但依然要对邻区进行测量，包括：
步骤101，UE接收小区优先级信息或者小区层级信息。
其中，小区优先级信息或者小区层级信息至少包括：本小区的小区优先级信息或者小区层级信息；相邻小区的小区优先级信息或者小区层级信息。
其中，小区优先级信息或者小区层级信息通过系统信息或者RRC专有消息携带。
如果UE接收的RRC消息中包括小区优先级信息或者小区层级信息，那么UE可以忽视系统信息中的小区优先级信息或者小区层级信息。
步骤102，UE根据小区优先级信息或者小区层级信息执行测量，包括：
如果UE当前小区的信号测量结果高于给定的阈值，那么UE不会对小区优先级或者小区层级低于当前小区的小区执行测量，否则，UE会对小区优先级或者小区层级低于当前小区的小区执行测量。
UE对小区优先级信息或者小区层级信息高于当前小区的小区执行测量：
或者，UE对小区优先级信息或者小区层级信息高于当前小区的小区执行小区重选评估。
实例2
假设IAB中继(relay)是分层级的，每个层级的IAB只会与全部或者部分同层级的IAB以及上一层级的IAB相连，假设donor IAB的层级为0，UE接入IAB的层级为N，那么核心网与UE的传输路径是依次经过层级为1,2，..N的IAB。假设IAB与IAB之间建立连接的过程与UE和基站建立连接的过程类似，那么层级为n+1的IAB对于层级为n的IAB来说就是UE，反之，层级为n的IAB对于层级为n的IAB来说就是基站。如果层级为n+1的IAB通过Uu口以UE的方式接入到层级为n的IAB，我们称层级为n的IAB为层级为n+1的IAB的母节点。
本实施描述当IAB初始工作时，如何选择母节点(parent IAB node)作为其服务小区。
IAB选择Parent IAB node/宿主(Donor)与常规的UE的小区选择/重选(cell  selection/reselection)不同，Cell selection/reselection时UE所使用的判断门限只要保证基础覆盖即可，但是对于IAB node选择parent IAB node/donor时，希望IAB node和parent IAB node/donor信道质量不要太差，因此要考虑定义parent IAB node选择门限Th1，当IAB node检测到与周围的邻居(neighbor)IAB node/donor之间的链路测量结果参考信号接收功率(Reference Signal Receiving Power，RSRP)/参考信号接收质量(Reference Signal Receiving Quality，RSRQ)>Th1时，才会将该neighbor IAB node/donor作为候选(candidate)parent IAB node/donor。
步骤111，parent IAB node发送系统信息，包括IAB选择门限，IAB重选偏移，IAB donor标识，优先级信息或者小区层级信息，IAb donor的PLMN等信息。
其中，AB的层级信息标识IAB到IAB donor的跳数。
步骤112，IAB基于上述IAB选择门限，检测到与周围的neighbor IAB node/donor之间的链路测量结果大于IAB选择门限时，将该IAB作为候选母节点。
或者，IAB基于上述IAB重选偏移信息，检测到与周围的neighbor IAB node/donor之间的链路测量结果与当前选择的母节点的测量结果的差值大于IAB选择门限时，将该IAB作为候选的重选母节点。
在一实施例中，如果parent IAB node发送的系统信息包括层级信息或者小区优先级信息，则IAB选择母节点的方式为：
步骤121，IAB在多个频点上搜索信号最强的小区，读取SIB信息，获得IAB层级信息或者小区优先级信息、PLMN信息等。
步骤122，IAB根据测量结果找到满足s准则的合适的小区。
步骤123，IAB在所有满足合适的小区中选择IAB层级最高或者小区优先级信息最高的小区接入。
在一实施例中，如果IAB已经选择好母节点作为服务小区，依然要进行测量操作，包括：
步骤141，IAB接收相邻小区的配置信息，包括小区优先级或者小区层级， 测量配置信息。
步骤142，IAB根据所述配置信息执行测量包括：
如果IAB当前小区的信号测量结果高于测量配置信息中的阈值，那么
IAB不会对小区优先级或者小区层级低于当前小区的小区执行测量，否则，IAB会对小区优先级或者小区层级低于当前小区的小区执行测量。
IAB对小区优先级信息或者小区层级信息高于当前小区的小区执行测量。
实例3
IAB与UE的小区选择类似，优先选择层级较高的母IAB，这样可以使用较少的跳数到达IAB Donor，那么UE在接入小区之前，要获知该小区的层级信息以及是否支持IAB的信息。除此之外，IAB还要考虑上一层节点当前的负载信息，以免接入高负载IAB导致频繁拥塞。或者，当IAB当前负载较高或者已经连接了多个其他IAB作为下层IAB时，可以决定不再接入新的IAB，那么也可以在MIB中添加IAB禁止(Barred)的指示信息，用于指示禁止接入IAB但是不禁止接入普通的UE。
在一实施例中，IAB在系统信息中携带IAB接入禁止指示信息，当UE检测到系统信息时，忽略该指示信息，当IAB检测到该消息时，不会将该IAB作为候选的重选小区。
或者，母IAB node/donor发送接入控制相关信息用来指示是否允许新的IAB node接入。进行接入控制的原因可能是由于操作控制(operation control)，或是考虑到业务情况，此外还可以考虑回程(backhaul)链路的拥塞情况或是带宽。在一实施例中，backhaul链路的拥塞情况可以通过空口资源占用比率，带宽，空闲带宽，频谱效率等维度体现。在一实施例中，在多跳路径上，新接入的IAB节点能达到的数据传输往往受限于到donor的多跳路径上的瓶颈链路，即信道质量，能提供的吞吐量最低，或者最拥塞的特定hop。基于这一点，可以由母IAB(parent IAB)节点广播到特定IAB Donor的瓶颈链路的拥塞情况，此外，还可以广播IAB Donor有线(wireline)链路的剩余带宽及吞吐量信息，用于IAB node进行parent IAB node/donor选择。
或者：网络侧IAB分配一个专有的接入标识或者接入等级，基于该接入标 识或者接入等级分配一套IAB专有的接入参数，并通过系统信息发送下来。接收到该接入参数的IAB基于该参数执行接入控制操作。
在一实施例中，假设IAB1是IAB2的母节点。
步骤151，IAB2接收母节点IAB1的系统信息，所述系统信息包括：IAB接入禁止指示信息或者基于IAB专有的接入控制参数或者backhaul链路的拥塞情况或是带宽信息。
在一实施例中，backhaul链路的拥塞情况可以通过空口资源占用比率，带宽，空闲带宽，频谱效率等维度体现。在一实施例中，在多跳路径上，新接入的IAB节点能达到的数据传输往往受限于到donor的多跳路径上的瓶颈链路，即信道质量，能提供的吞吐量最低，或者最拥塞的特定hop。因此，可以由parent IAB节点广播到特定IAB Donor的瓶颈链路的拥塞情况，此外，还可以广播IAB Donor wireline链路的剩余带宽及吞吐量信息，用于IAB node进行parent IAB node/donor选择。
步骤152，IAB基于接收到的信息执行接入控制操作。
实例4
当IAB接入到其他IAB时，对于时分双工(Time Division Duplex，TDD)系统，可以通过tdd-上行链路(Up-Link，UL)-下行链路(Down-Link，DL)-通用配置(configurationCommon)将执行随机接入期间的时隙全部都设置为X符号，暂停对接入UE的服务，然后根据上层IAB广播的随机接入资源位置，发送前导符号(preamble)，然后在随机接入响应窗中监听消息2，获取消息3的资源后再发送消息3，继续监听等待接收消息4。
为了减小对服务UE的影响，IAB要缩短随机接入的时延。因此，IAB的母节点会为IAB配置不同于UE的更小的IAB发送前导码的资源；IAB接收消息2或者消息4的资源信息；IAB随机接入响应窗大小，随机接入冲突解决时间，上层IAB优先响应IAB。
在一实施例中，假设IAB1是IAB2的母节点。
步骤161，IAB2接收母节点IAB1的系统信息，所述系统信息包括：IAB随机接入参数。
在一实施例中，IAB随机接入参数包括：IAB发送前导码的资源；IAB接收消息2或者消息4的资源信息；IAB随机接入响应窗大小，随机接入冲突解决时间。
步骤162，IAB基于接收到的信息执行随机接入操作。
实例5
假设IAB1是IAB2的母节点。
步骤171，IAB1发送相邻小区的资源配置信息；
在一实施例中，IAB1通过RRC专有信息发送的相邻小区的系统信息。所述通过RRC专有信息包括但不限于RRC重配消息。
其中，资源配置信息至少包括：第一传输节点与终端通信的资源信息，第一传输节点与第二传输节点的通信的资源信息，第一传输节点发送系统信息的资源信息。
在一实施例中，所述资源信息包括：时间资源信息；频率资源信息，空间资源信息。在一实施例中，时间资源信息包括：子帧偏移和周期；符号偏移和周期；时隙(slot)偏移和周期。频域资源信息包括：载波索引信息；带宽部分索引指示信息；资源块索引指示信息。空间资源信息包括：波束索引指示信息；波束方向指示信息。
其中，IAB1包括以下之一：IAB，IAB donor，中继，基站，CU以及DU。
IAB2包括以下之一：IAB，中继以及DU。
步骤172，IAB2接收IAB1发送的相邻小区的资源配置信息。
步骤173，IAB2节点根据资源配置信息在所述资源位置监听相邻小区的系统信息。
实例6
如图5所示，假设IAB donor是IAB1的母节点，且层级为0，假设IAB1是IAB2的母节点，IAB2是IAB3的母节点，在一个时刻，编号为X的IAB(IAB-X)新接入到网络中，层级为1。
步骤181，IAB-X通过RRC专有信令将自己的系统信息上报给IAB donor， 所述RRC专有信令可以包括：上行专用控制信道消息(UL-DCCH-Message)；连接建议请求信息；UE辅助信息；中继辅助信息；IAB辅助信息；上行信息传输。
步骤182，IAB donor接收到IAB-X的系统信息后，将其通过RRC专有信令发送给子节点IAB1；所述RRC专有信令可以包括：RRC重配消息；中继或者IAB控制信息。
步骤183，IAB1接收到IAB-X的系统信息后，将其通过RRC专有信令发送给子节点IAB2。
步骤184，IAB2接收到IAB-X的系统信息后，将其通过RRC专有信令发送给子节点IAB3。
后续，当IAB-X的系统信息发生更新时，也可以通过上述步骤181至步骤184流程告知给其他IAB。
通过上述流程，IAB1，IAB2，IAB3都获知了IAB-X的系统信息，他们都可以根据测量配置对IAB-X进行测量。
在一实施例中，如果IAB-X的系统信息中携带小区优先级或者小区层级信息，或者说IAB-X上报了自己的小区优先级或者小区层级到IAB donor，那么IAB donor可以将IAB-X的小区优先级或者小区层级信息一层一层的发送下来。
对于IAB3来说，由于其当前接入的小区层级为2，那么它要对IAB-X进行测量。
对于IAB1和IAB3，只有当小区的信号测量结果低于给定的阈值，才会对IAB-X执行测量，否则，不会执行测量。
实例7
步骤191：IAB node以UE的方式接入母节点时，监听系统信息，获得IAB donor的小区标识；
步骤192：IAB node将获得的IAB donor的小区标识通过NG接口发送给接入和移动管理模块(Access and Mobility Management Function，AMF)
步骤193：AMF向该IAB node发送IAB Donor的互联网协议(Internet  Protocol，IP)地址。
此外，IAB node DU与IAB donor CU之间建立F1AP连接时，可以在F1建立(setup)消息中指示IAB node类型，类似的，可以在IAB donor和AMF之间建立NG-C连接时，也可以指示IAB node类型。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加通用硬件平台的方式来实现，也可以通过硬件来实现。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如只读存储器(Read-Only Memory，ROM)/随机存取存储器(Random Access Memory，RAM)、磁碟、光盘)中，包括多个指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开一个或多个实施例所述的方法。
实施例2
在本实施例中提供了一种接入选择装置，该装置设置为实现上述实施例及实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置可以以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图6是根据本公开实施例的接入选择装置的结构框图，应用于传输节点，如图6所示，该装置包括：
第一接收模块62，设置为接收母节点的配置信息或者相邻小区的配置信息。
在一实施例中，上述配置信息包括以下至少之一：小区优先级信息、用于指示到达集成接入回程宿主IAB donor的跳数的小区层级信息、系统信息、资源配置信息、小区接入信息、小区选择信息、IAB donor信息、IAB信息；其中，该IAB donor包括IAB基站或者IAB donorDU；该IAB donor信息或者IAB信息包括以下至少之一：连接跳数、层级、路径开销、负荷、拥塞、空口资源占用比率、带宽、空闲带宽、频谱效率、IAB Donor无线链路的剩余带宽以及吞吐量信息；其中，该系统信息包括以下至少之一：主系统信息块MIB、最小系统信息minimum SI、IAB选择门限、IAB重选偏移、IAB donor标识、小区优先级信息、小区层级信息、IAB接入控制参数、IAB随机接入参数、IAB禁止接入指 示；其中，该IAB接入控制参数包括：基于IAB专有的接入标识或者接入等级配置的IAB专有的控制参数；该IAB随机接入参数包括：IAB发送前导码的资源、IAB接收消息2或者消息4的资源信息、IAB随机接入响应窗大小、随机接入冲突解决时间；该小区接入信息包括以下至少之一：小区优先级信息、用于指示到达集成接入回程宿主IAB donor的跳数的小区层级信息；该小区选择信息包括以下至少之一：IAB选择门限、IAB重选偏移、IAB donor标识；其中，该IAB Donor标识包括：基站标识gNB ID、小区全球标识NGCI、物理小区标识PCI、分布式单元标识DU ID；其中，该IAB选择门限包括：小区测量选择门限、波束(beam)测量选择门限；该资源配置信息包括以下至少之一：该第一传输节点与终端通信的资源信息、该第一传输节点与第二传输节点通信的资源信息、传输节点发送该系统信息的资源信息。
在一实施例中，上述资源信息包括以下至少之一：时间资源信息、频率资源信息、空间资源信息；其中，该时间资源信息包括以下至少之一：子帧偏移和周期、符号偏移和周期、时隙(slot)偏移和周期；该频域资源信息包括以下至少之一：载波索引信息、带宽部分索引指示信息、资源块索引指示信息；该空间资源信息包括以下至少之一：波束索引指示信息、波束方向指示信息。
第一选择模块64，设置为根据该配置信息进行测量、监听或者选择接入的母节点。
通过图6所示装置，接收母节点的配置信息或者相邻小区的配置信息；根据该配置信息进行测量、监听或者选择接入的母节点。也就是说，根据接收的配置信息选择接入的母节点，进而解决了在相关技术的IAB多跳网络中，UE通过多个IAB与核心网进行通信的过程中，没有合理的IAB选择方法，导致通信时延和开销较大的问题，进而达到了减少通信时延和开销的效果。
在一实施例中，上述第一传输节点包括但并不限于：IAB，中继，DU。
在一个实施方式中，上述第二传输节点的层级高于该第一传输节点的层级；或者，该第二传输节点为该第一传输节点的母节点；或者，该第二传输节点为该第一传输节点的服务小区。
在一实施例中，上述第一接收模块62还设置为接收第二传输节点通过无线资源控制RRC专有消息发送的相邻小区的系统信息。
在一实施例中，在该第二传输节点通过RRC专有信息发送该相邻小区的系统信息之前，还包括：第二传输节点接收第三传输节点上报的系统信息。其中，第二传输节点接收该第三传输节点上报的系统信息包括：第二传输节点接收该第三传输节点通过RRC专有信令上报的系统信息，其中，该RRC专有信令包括以下至少之一：上行专有控制消息、连接建立请求信息、用户设备UE辅助信息、中继辅助信息、IAB辅助信息、上行传输信息。
在一实施例中，上述第三传输节点上报的上述系统信息包括上述第三传输节点本小区的系统信息或者上述第三传输节点相邻小区的系统信息。
在一实施例中，上述第一选择模块64还设置为根据上述资源信息，在上述资源上监听上述相邻小区的系统信息。
在一个实施方式中，上述第一选择模块64还设置为若上述第一传输节点当前小区的信号测量结果高于预设阈值，则上述第一传输节点不对小区优先级或者小区层级低于上述当前小区的小区执行测量；若上述第一传输节点当前小区的信号测量结果低于上述预设阈值，则上述第一传输节点对小区优先级或者小区层级低于上述当前小区的小区执行测量；或者，上述第一选择模块64还设置为对小区优先级或者小区层级高于当前小区的小区执行测量。
在一实施例中，上述第二传输节点包括以下之一：IAB，IAB donor，中继，基站，CU，DU。上述第三传输节点包括以下之一：IAB，中继，DU。
在一实施例中，CU拥有最高层级，宿主(donor)基站拥有最高层级。
在一实施例中，在该第一传输节点为IAB节点node时，该IAB node将获得的IAB donor的小区标识通过NG接口发送给接入和移动管理模块AMF；或者，IAB node分布式处理单元DU与IAB donor集中式处理单元CU之间建立F1接入点AP连接时，在F1建立消息中指示IAB node类型；或者，该IAB donor在和该AMF之间建立NG-C连接时指示IAB node类型。
在本实施例中还提供了一种接入选择装置，该装置设置为实现上述实施例及实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置可以以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图7是根据本公开实施例的另一种接入选择装置的结构框图，应用于用户设备UE，如图7所示，该装置包括：
第二接收模块72，设置为接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息。
在一实施例中，上述小区优先级信息包括以下至少之一：本小区的小区优先级信息、相邻小区的小区优先级信息；上述小区层级信息包括以下至少之一：本小区的小区层级信息、相邻小区的小区层级信息。
第二选择模块74，设置为根据该小区优先级信息、该小区层级信息或者IAB donor信息执行测量或者小区重选；其中，该IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞。其中，该IAB donor包括IAB基站或者IAB donor DU。
通过图7所示装置，用户设备UE接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息；该UE根据该小区优先级信息、该小区层级信息或者IAB donor信息执行测量或者小区重选；其中，该IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞。其中，该IAB donor包括IAB基站IAB donor DU。也就是说，UE可以根据小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息执行测量或者小区重选，进而解决了在相关技术中的IAB多跳网络中，UE通过多个IAB与核心网进行通信的过程中，没有合理的IAB选择方法，导致通信时延和开销较大的问题，进而达到了减少通信时延和开销的效果。
在一个实施方式中，上述小区优先级信息或者上述小区层级信息通过系统信息或者无线资源控制RRC专有消息携带。
在一实施例中，若上述UE接收的RRC专有消息中包括上述小区优先级信息或者上述小区层级信息，则上述UE忽略上述系统信息中的小区优先级信息或者小区层级信息。
在一个实施方式中，上述第二选择模块74还设置为在上述UE当前小区的信号测量结果高于预设阈值时，不对小区优先级或者小区层级低于上述当前小区的小区执行测量；在上述UE当前小区的信号测量结果低于上述预设阈值时，对小区优先级或者小区层级低于上述当前小区的小区执行测量；或者，
上述第二选择模块74还设置为对小区优先级或者小区层级高于上述当前小区的小区执行测量。
在一实施例中，上述第二选择模块74还设置为对小区优先级信息或者小区层级信息高于上述当前小区的小区执行小区重选。
上述一个或多个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述多个模块以任意组合的形式分别位于不同的处理器中。
实施例3
本公开的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一实施例所述的方法。
在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的计算机程序：
S1，第一传输节点接收母节点的配置信息或者相邻小区的配置信息；
S2，所述第一传输节点根据所述配置信息进行测量、监听或者选择接入的母节点。
在一实施例中，存储介质还被设置为存储用于执行以下步骤的计算机程序：
S1，用户设备UE接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息；
S2，UE根据该小区优先级信息、该小区层级信息或者所述IAB donor信息进行测量或者小区重选；其中，该IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞；该IAB donor包括IAB基站或者IAB donor DU。
在本实施例中，上述存储介质可以包括但不限于：通用串行总线闪存盘(Universal Serial Bus Flash Disk，U盘)、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、移动硬盘、磁碟或者光盘等多种可以存储计算机程序的介质。
本公开的实施例还提供了一种电子装置，如图8所示，包括存储器810和处理器820，该存储器810中存储有计算机程序，该处理器820被设置为运行计 算机程序以执行上述任一实施例所述的方法。
在一实施例中，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器820连接，该输入输出设备和上述处理器820连接。
在本实施例中，上述处理器820可以被设置为通过计算机程序执行以下步骤：
S1，第一传输节点接收母节点的配置信息或者相邻小区的配置信息；
S2，所述第一传输节点根据所述配置信息进行测量、监听或者选择接入的母节点。
在一实施例中，上述处理器820还被设置为存储用于执行以下步骤的计算机程序：
S1，用户设备UE接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息；
S2，UE根据该小区优先级信息、该小区层级信息或者IAB donor信息进行测量或者小区重选；其中，该IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞；该IAB donor包括IAB基站或者IAB donor DU。
本实施例中的示例可以参考上述实施例及实施方式中所描述的示例，本实施例在此不再赘述。
本领域的技术人员应该明白，上述的本公开的一个或多个模块或一个或多个步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，在一实施例中，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在部分情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成一个或多个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。

Claims (30)

  1. 一种接入选择方法，包括：
    第一传输节点接收母节点的配置信息或者相邻小区的配置信息；
    所述第一传输节点根据所述配置信息进行测量、监听或者选择接入的母节点。
  2. 根据权利要求1所述的方法，其中，所述配置信息包括以下至少之一：
    小区优先级信息、用于指示到达集成接入回程宿主IAB donor的跳数的小区层级信息、系统信息、资源配置信息、小区接入信息、小区选择信息、IAB donor信息、集成接入回程IAB信息；
    其中，所述IAB donor包括IAB基站或者IAB donor分布式单元DU。
  3. 根据权利要求2所述的方法，其中，所述IAB donor信息或者IAB信息包括以下至少之一：连接跳数、层级、路径开销、负荷、拥塞、空口资源占用比率、带宽、空闲带宽、频谱效率、IAB Donor无线链路的剩余带宽以及吞吐量信息。
  4. 根据权利要求2所述的方法，其中，所述系统信息包括以下至少之一：主系统信息块MIB、最小系统信息minimum SI、IAB选择门限、IAB重选偏移、IAB donor标识、小区优先级信息、小区层级信息、IAB接入控制参数、IAB随机接入参数以及IAB禁止接入指示。
  5. 根据权利要求4所述的方法，其中，所述IAB接入控制参数包括：基于IAB专有的接入标识或者接入等级配置的IAB专有的控制参数；所述IAB随机接入参数包括：IAB发送前导码的资源、IAB接收消息MSG 2或者MSG 4的资源信息、IAB随机接入响应窗大小以及随机接入冲突解决时间。
  6. 根据权利要求2所述的方法，其中，所述小区接入信息包括以下至少之一：小区优先级信息、用于指示到达集成接入回程宿主IAB donor的跳数的小区层级信息。
  7. 根据权利要求2所述的方法，其中，所述小区选择信息包括以下至少之一：IAB选择门限、IAB重选偏移以及IAB donor标识；
    其中，所述IAB Donor标识包括：基站标识gNB ID、小区全球标识NGCI、 物理小区标识PCI、分布式单元标识DU ID；所述IAB选择门限包括：小区测量选择门限、波束beam测量选择门限。
  8. 根据权利要求2所述的方法，其中，所述资源配置信息包括以下至少之一：所述第一传输节点与终端通信的资源信息、所述第一传输节点与第二传输节点通信的资源信息、所述第一传输节点发送所述系统信息的资源信息。
  9. 根据权利要求5所述的方法，其中，所述资源信息包括以下至少之一：时间资源信息、频率资源信息以及空间资源信息；
    其中，所述时间资源信息包括以下至少之一：子帧偏移和周期、符号偏移和周期、时隙slot偏移和周期；所述频域资源信息包括以下至少之一：载波索引信息、带宽部分索引指示信息、资源块索引指示信息；所述空间资源信息包括以下至少之一：波束索引指示信息、波束方向指示信息。
  10. 根据权利要求8所述的方法，其中：
    所述第二传输节点的层级高于所述第一传输节点的层级；或者，
    所述第二传输节点为所述第一传输节点的母节点；或者，
    所述第二传输节点为所述第一传输节点的服务小区。
  11. 根据权利要求1所述的方法，其中，所述第一传输节点接收相邻小区的配置信息，包括：
    所述第一传输节点接收第二传输节点通过无线资源控制RRC专有消息发送的相邻小区的系统信息。
  12. 根据权利要求11所述的方法，在所述第二传输节点通过RRC专有消息发送所述相邻小区的系统信息之前，还包括：
    所述第二传输节点接收第三传输节点上报的系统信息。
  13. 根据权利要求12所述的方法，其中，所述第二传输节点接收所述第三传输节点上报的系统信息，包括：
    所述第二传输节点接收所述第三传输节点通过RRC专有信令上报的系统信息；
    其中，所述RRC专有信令包括以下至少之一：上行专有控制消息、连接建 立请求信息、用户设备UE辅助信息、中继辅助信息、IAB辅助信息、上行传输信息。
  14. 根据权利要求12或13所述的方法，其中，所述第三传输节点上报的所述系统信息包括：所述第三传输节点本小区的系统信息或者所述第三传输节点相邻小区的系统信息。
  15. 根据权利要求9所述的方法，其中，所述第一传输节点根据所述配置信息进行监听，包括：
    所述第一传输节点根据所述资源信息，在所述资源信息对应的资源上监听所述相邻小区的系统信息。
  16. 根据权利要求1所述的方法，其中，所述第一传输节点根据所述配置信息进行测量，包括下述之一：
    在所述第一传输节点当前小区的信号测量结果高于预设阈值的情况下，所述第一传输节点不对小区优先级或者小区层级低于所述当前小区的小区进行测量；在所述第一传输节点当前小区的信号测量结果低于所述预设阈值的情况下，所述第一传输节点对小区优先级或者小区层级低于所述当前小区的小区进行测量；
    所述第一传输节点对小区优先级或者小区层级高于当前小区的小区执进行测量。
  17. 根据权利要求1至16中任一项所述的方法，其中，所述第一传输节点包括以下之一：IAB，中继以及DU。
  18. 根据权利要求8或10-14中任一项所述的方法，其中，所述第二传输节点包括以下之一：IAB，IAB donor，中继，基站，集中式处理单元CU以及DU。
  19. 根据权利要求11至13中任一项所述的方法，其中，所述第三传输节点包括以下之一：IAB，中继以及DU。
  20. 根据权利要求1所述的方法，还包括下述之一：
    在所述第一传输节点为IAB节点node的情况下，所述IAB node将获得的IAB donor的小区标识通过NG接口发送给接入和移动管理模块AMF；
    在IAB node DU与所述IAB donor CU之间建立F1接入点AP连接的情况下，在F1建立消息中指示IAB node类型；
    在所述IAB donor和所述AMF之间建立控制面接口NG-C连接的情况下指示IAB node类型。
  21. 一种接入选择方法，包括：
    用户设备UE接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息；
    所述UE根据所述小区优先级信息、所述小区层级信息或者所述IAB donor信息进行测量或者小区重选；
    其中，所述IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞；所述IAB donor信息对应的IAB donor包括IAB基站或者IAB donor分布式单元DU。
  22. 根据权利要求21所述的方法，其中：
    所述小区优先级信息包括以下至少之一：本小区的小区优先级信息、相邻小区的小区优先级信息；
    所述小区层级信息包括以下至少之一：本小区的小区层级信息、相邻小区的小区层级信息。
  23. 根据权利要求21所述的方法，其中，所述小区优先级信息通过系统信息或者无线资源控制RRC专有消息携带；所述小区层级信息通过系统信息或者无线资源控制RRC专有消息携带。
  24. 根据权利要求23所述的方法，其中，在所述UE接收的RRC专有消息中包括所述小区优先级信息或者所述小区层级信息的情况下，所述UE忽略所述系统信息中的小区优先级信息或者小区层级信息。
  25. 根据权利要求21所述的方法，其中，所述UE根据所述小区优先级信息或者所述小区层级信息进行测量，包括下述之一：
    在所述UE当前小区的信号测量结果高于预设阈值的情况下，所述UE不对小区优先级或者小区层级低于所述当前小区的小区进行测量；在所述UE当前小 区的信号测量结果低于所述预设阈值的情况下，所述UE对小区优先级或者小区层级低于所述当前小区的小区进行测量；
    所述UE对小区优先级或者小区层级高于所述当前小区的小区进行测量。
  26. 根据权利要求21所述的方法，其中，所述UE根据所述小区优先级信息或者所述小区层级信息进行小区重选，包括：
    所述UE对所述小区优先级信息或者所述小区层级信息高于当前小区的小区进行小区重选。
  27. 一种接入选择装置，应用于传输节点，包括：
    接收模块，设置为接收母节点的配置信息或者相邻小区的配置信息；
    选择模块，设置为根据所述配置信息进行测量、监听或者选择接入的母节点。
  28. 一种接入选择装置，应用于用户设备UE，包括：
    接收模块，设置为接收小区优先级信息、小区层级信息或者集成接入回程宿主IAB donor信息；
    选择模块，设置为根据所述小区优先级信息、所述小区层级信息或者所述IAB donor信息进行测量或者小区重选；
    其中，所述IAB donor信息包括以下至少之一：连接跳数，层级，路径开销，负荷/拥塞；所述IAB donor信息对应的IAB donor包括IAB基站或者IAB donor分布式单元DU。
  29. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至20或者权利要求21-26中任一项所述的方法。
  30. 一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求1至20或者权利要求21-26中任一项所述的方法。
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