WO2021259358A1 - Procédé et appareil de changement de partie de largeur de bande - Google Patents

Procédé et appareil de changement de partie de largeur de bande Download PDF

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Publication number
WO2021259358A1
WO2021259358A1 PCT/CN2021/102078 CN2021102078W WO2021259358A1 WO 2021259358 A1 WO2021259358 A1 WO 2021259358A1 CN 2021102078 W CN2021102078 W CN 2021102078W WO 2021259358 A1 WO2021259358 A1 WO 2021259358A1
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Prior art keywords
access
partial bandwidth
user equipment
state
resource
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PCT/CN2021/102078
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English (en)
Chinese (zh)
Inventor
冯爱娟
生嘉
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Tcl通讯（宁波）有限公司
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Publication of WO2021259358A1 publication Critical patent/WO2021259358A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • 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
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • 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

Definitions

  • the present invention relates to the field of communication technology, and in particular to a method and device for switching Bandwidth Part (BWP).
  • BWP Bandwidth Part
  • 5G usage scenarios include enhanced mobile broadband (eMBB), large-scale machine type (mMTC), ultra-reliable and low-latency communications (URLLC).
  • eMBB enhanced mobile broadband
  • mMTC large-scale machine type
  • URLLC ultra-reliable and low-latency communications
  • mMTC and URLLC there is a class of time-sensitive application scenarios with relatively low device complexity, such as industrial IoT sensors, smart monitoring in smart cities, wearable devices and other new IoT application scenarios.
  • the complexity and cost of new IoT devices are comparable to URLLC/eMBB devices.
  • the device size is relatively small, and the bandwidth and peak rate requirements are not very high.
  • the 3GPP RAN1 group set up a project "support of reduced capability NR devices" in R17 to study how to support this new type of IoT device, which is called Reduced Capability User Equipment (RedCapability User Equipment), referred to as RedCap UE for short.
  • RedCap UE has a much lower bandwidth.
  • BWP Bandwidth Part
  • the bandwidth of the UE can be dynamically changed.
  • the system configures a large bandwidth BWP for the UE; when the traffic volume is small, a small bandwidth is configured for the UE.
  • BWP is mainly divided into two categories: initial BWP and proprietary BWP.
  • the initial BWP is mainly used for receiving RMSI (minimum remaining system information), initiating random access, etc.; while the proprietary BWP is mainly used for data service transmission, and the bandwidth of the proprietary BWP is generally larger than the initial BWP.
  • Upstream and downstream each have their own initial BWP and proprietary BWP.
  • Redcap UE as an Internet of Things device, has a large number in a cell. For the limited wireless resources where the BWP is located, the load is large.
  • the initial BWP should carry the paging control channel (Paging Control Channel, PCCH), the physical random access channel (Physical Random Access Channel, PRACH), and the radio resource control (Radio Resource Control) for the random access process.
  • PCCH paging Control Channel
  • PRACH Physical Random Access Channel
  • Radio Resource Control Radio Resource Control
  • the initial downlink BWP load will increase as the number of Redcap UEs increases.
  • Redcap UE complexity is reduced. For example, the number of antennas is reduced, which will affect the coverage rate.
  • the network uses low bit rate or retransmission technology to transmit on the broadcast channel. This application plus the huge number of RedCap UEs makes the initial situation worse.
  • the load of BWP is reduced.
  • BWP handover based on DCI indication: Used to carry the BWP handover indication in the scheduling DCI when there is data scheduling. After receiving the indication, the UE performs BWP handover, and then Data processing; DCI scheduling is mainly used to switch from the initial BWP to the proprietary BWP for data processing; but when the proprietary BWP configured by the upper layer is less than 4, the possibility of switching from the proprietary BWP back to the initial BWP by scheduling DCI is not ruled out .
  • Handover based on RRC indication used for the UE to switch from the initial BWP to the configured firstActiveBWP after the UE completes the initial access and enters the RRC connected state or after the RRC reconfiguration or the SCell is activated; this scheme is after the initial random access
  • the solution cannot solve the problem of the initial random access process and the excessive initial BWP load.
  • Timer-based handover When the base station configures the serving cell configuration for the UE, it will configure the uplink and downlink dedicated BWP configuration, and also configure the downlink BWP Inactive timer; this timer is used for the UE if there is no service scheduling for a long time, the timer After the timeout, switch to the default downlink BWP (if configured), otherwise switch to the initial downlink BWP; this solution is to switch from the active downlink BWP to the default downlink BWP or the initial downlink BWP.
  • the activated BWP needs to initiate random access, but the current uplink BWP does not have PRACH configuration, and the uplink BWP needs to be switched to the initial uplink BWP for random access, and the corresponding downlink BWP should also be switched to and uplink
  • the embodiment of the present invention provides a partial bandwidth switching method and device, which prohibits switching back to the initial partial bandwidth.
  • a partial bandwidth switching method provided by an embodiment of the present invention includes: determining an access state of a partial bandwidth, generating restricted access information according to the access state, and sending the restricted access information to a user equipment.
  • the determining the access state of the partial bandwidth includes:
  • the determining the access state of the partial bandwidth includes:
  • the partial bandwidth is a partial bandwidth corresponding to the user equipment of the preset classification
  • the classification includes at least user category or access priority.
  • the determining the access state of the partial bandwidth includes:
  • Target restricted access information is restricted access information corresponding to the target partial bandwidth.
  • the determining the access state of the partial bandwidth includes:
  • the judging that the channel state information satisfies a preset access barring condition, and setting the partial bandwidth to the access barring state includes:
  • the channel state information includes at least one or a combination of the following: the number of users connected, the signal-to-noise ratio, the number of users in the wireless resource control connection state, the noise floor, the channel quality indicator, the reference signal reception quality, and Reference signal received power;
  • the access prohibition condition includes that at least the number of accessed users is greater than a preset number of users threshold, and the signal-to-noise ratio is less than a preset signal-to-noise ratio threshold.
  • the determining the access state of the partial bandwidth includes:
  • the resources include public resources and exclusive resources.
  • the determining the access state of the partial bandwidth includes:
  • the judging that the resource status information satisfies a preset resource restriction condition, and setting the resource to the access barred state includes:
  • the public resource and the dedicated resource are in the access prohibited state, and the initial partial bandwidth is set to the access prohibited state.
  • the judging that the resource state information does not satisfy the resource restriction condition, and setting the resource to the allowed access state includes:
  • the initial partial bandwidth is set to the allowed access state, allowing processing on the dedicated resource The service of the user equipment.
  • the judging that the resource state information does not satisfy the resource restriction condition, and setting the resource to the allowed access state includes:
  • the initial partial bandwidth is set to the permitted access state , Allowing the service of the user equipment to be processed on the non-initial public resource.
  • a partial bandwidth switching method provided by an embodiment of the present invention includes: receiving restricted access information sent by a base station; determining a final target partial bandwidth according to the restricted access information, and the final target partial bandwidth is in a state of allowing access .
  • the determining the final target partial bandwidth according to the restricted access information includes:
  • the target partial bandwidth is in an access allowed state, and the target partial bandwidth is the final target partial bandwidth
  • the target partial bandwidth is in an access prohibited state, and the target partial bandwidth is preset again.
  • the receiving restricted access information sent by the base station includes:
  • the receiving restricted access information sent by the base station includes:
  • Target restricted access information is restricted access information corresponding to the target partial bandwidth.
  • the receiving restricted access information sent by the base station includes:
  • the receiving restricted access information sent by the base station includes:
  • the determining the final target partial bandwidth according to the restricted access information includes:
  • the public resource and the dedicated resource are in a state where access is prohibited, and the handover process is stopped;
  • the public resource is in the forbidden access state
  • the dedicated resource is in the allowed access state
  • the service of the user equipment is processed on the dedicated resource; or the handover process is stopped;
  • the user equipment is processed on the non-initial public resource Business; or stop the switching process.
  • the method disclosed in the present invention can be programmed as computer-executable instructions stored in a non-volatile computer-readable medium.
  • the non-volatile computer-readable medium instructs the processor of the computer to perform the method.
  • the non-volatile computer-readable medium may include at least one consisting of at least one of the following: hard disk, optical disk, optical storage device, magnetic storage device, read-only memory, programmable read-only memory, erasable programmable only Read memory, EPROM, electronically erasable programmable read-only memory and flash memory.
  • the method disclosed in the present invention can be compiled into a computer program product, which can cause a computer to execute the method of the present invention.
  • the access status of a part of the bandwidth is determined, the restricted access information is generated according to the access status, and the restricted access information is sent to the user equipment.
  • the user equipment determines the final target partial bandwidth according to the restricted access information, switches to the final target partial bandwidth, or stops the handover process. Therefore, this solution can prohibit switching back to the original partial bandwidth during the process of switching from the existing partial bandwidth back to the initial partial bandwidth.
  • This solution is suitable for scenarios that switch between various partial bandwidths, not just switching back to the initial partial bandwidth. Scene.
  • FIG. 1 is a schematic diagram of a base station, a user device, and a network entity device provided by an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a partial bandwidth switching method provided by an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of another partial bandwidth switching method according to an embodiment of the present invention.
  • Fig. 5 is a working flowchart of another partial bandwidth switching method provided by an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of a system to which the partial bandwidth switching method provided by an application embodiment of the present invention is applied.
  • the embodiment of the present invention provides a partial bandwidth switching method and device.
  • the user equipment in the embodiments of the present invention includes industrial IoT sensors, smart monitoring in smart cities, wearable devices, and the like.
  • a user equipment (UE) 10a, a UE 10b, a base station (BS) 200a, and a network entity device 300 perform a method according to an embodiment of the present invention.
  • the connections between the device and the device components are shown in the form of lines and arrows in FIG. 1.
  • the UE 10a may include a processor 11a, a memory 12a, and a transceiver 13a.
  • the UE 10b may include a processor 11b, a memory 12b, and a transceiver 13b.
  • the base station 200a may include a processor 201a, a memory 202a, and a transceiver 203a.
  • the network entity device 300 may include a processor 301, a memory 302, and a transceiver 303.
  • Each of the processors 11a, 11b, 201a, and 301 may be configured to implement the functions, procedures, and/or methods described in this description. Multiple layers of the radio interface protocol can be implemented in the processors 11a, 11b, 201a, and 301.
  • Each of the memories 12a, 12b, 202a, and 302 stores various programs and information in an operable state to operate the connected processor.
  • Each of the transceivers 13a, 13b, 203a, and 303 is coupled with the connected processor in an operable state to transmit and/or receive radio signals.
  • the base station 200a may be one of eNB, gNB, or other radio nodes.
  • Each of the processors 11a, 11b, 201a, and 301 may include a general-purpose central processing unit (CPU), an application-specific integrated circuit (ASIC), other chipsets, logic circuits, and/or data processing devices.
  • Each of the memories 12a, 12b, 202a, and 302 may include read-only memory (ROM), random access memory (RAM), flash memory (random access memory), and memory card (memory card). ), storage medium, other storage device, and/or any combination of memory and storage device.
  • Each of the transceivers 13a, 13b, 203a, and 303 may include a baseband circuit and a radio frequency (RF) circuit to process radio frequency signals.
  • RF radio frequency
  • the technology described herein can be implemented by modules, programs, functions, entities, etc. that perform the functions described herein. These modules can be stored in the memory and executed by the processor.
  • the memory may be implemented inside the processor or outside the processor, where the memory may be communicatively coupled with the processor in various ways known in the art.
  • the network entity device 300 may be a node in a central network (central network, CN).
  • CN may include LTE CN or 5G core (5G core, 5GC), which may include user plane function (UPF), session management function (session management function, SMF), mobility management function (mobility management function, AMF) ), unified data management (UDM), policy control function (PCF), control plane/user plane separation (CUPS), authentication server (authentication server function, AUSF) , Network slicing selection function (network slice selection function, NSSF), network exposure function (network exposure function, NEF) and other network entities.
  • UPF user plane function
  • SMF session management function
  • mobility management function mobility management function
  • UMF unified data management
  • PCF policy control function
  • CUPS control plane/user plane separation
  • authentication server authentication server function, AUSF
  • Network slicing selection function network slice selection function, NSSF
  • network exposure function network exposure function
  • NEF network exposure function
  • a partial bandwidth switching method includes: determining an access state of a partial bandwidth, generating restricted access information according to the access state, and sending the restricted access information to a user equipment.
  • the base station determines the access status of a part of the bandwidth, and generates restricted access information according to the access status.
  • the base station judges the access status of each part of the bandwidth, that is, determines whether each part of the bandwidth allows new users to access, and generates the restricted access information of each part of the bandwidth according to the access status of each part of the bandwidth, and then broadcasts or dedicated RRC information. Let the restricted access information of each part of the bandwidth be sent to the user equipment.
  • the restricted access information may be broadcast to the user equipment through system information, such as master information block (MasterInformationBlock, MIB) or system information block type 1 (SystemInformationBlockType1).
  • the base station obtains the channel state information of each part of the bandwidth, and according to the channel state information of the obtained part of the bandwidth or other factors such as time, judges whether the channel state of the part of the bandwidth has deteriorated to a certain extent according to a certain strategy, if it is, then the part of the bandwidth It is in a state of forbidden to access, and no new users are allowed to access, so as to avoid further deterioration of the channel state.
  • the channel state information of part of the bandwidth includes, but is not limited to, the number of users connected, the signal-to-noise ratio (SINR), the number of users in the radio resource control connection state, the noise floor, the channel quality indicator (CQI), and the reference signal reception quality ( Reference Signal Received Quality), Reference Signal Received Power;
  • the source of the channel state information can be: MSG4 sends the measurement configuration to the user equipment through broadcast signaling before, and the user equipment reports the channel state information to the base station after the measurement; Or the base station obtains it through the historical information or the information reported by other user equipment in the cell.
  • the pre-set part of the bandwidth of the base station does not allow new users to enter the policy, that is, the prohibition conditions of the part of the bandwidth, including the number of connected users is greater than the preset number of users threshold, the signal-to-noise ratio is less than the preset signal-to-noise ratio threshold, or two Combination of prohibiting access conditions, or setting a time period, using this time period as a time period for restricting access of new users, etc.
  • the prohibiting access condition can be any one of the conditions or a combination thereof, and is not limited to the implementation of the present invention Examples listed.
  • the part of the bandwidth is in the access prohibited state; if the channel state information of the part of the bandwidth does not meet the aforementioned access prohibition condition, the part of the bandwidth is in the allowed access state.
  • the base station After the base station judges its access status according to the channel state information of part of the bandwidth, it generates corresponding restricted access information, and the information element of the part of the bandwidth restricted access information (Information element, IE) messages such as MSG4 for random access and reconfiguration are notified to the user equipment.
  • the IE includes each part of the bandwidth and the access state of each part of the bandwidth, and the structure of the IE is not limited.
  • the limited access information of the changed partial bandwidth, the limited access information of a single partial bandwidth, or the limited access information of all configured partial bandwidths can be carried in the signaling.
  • the structure of IE can be expressed in the following way:
  • the restricted access information defines each of the partial bandwidths identified by the plurality of bwp-Ids as an access permitted state or an access prohibited state.
  • the base station can judge the access state of part of the bandwidth of all user equipments accessing the base station, but not all part of the bandwidth of the user equipment needs to be judged.
  • Access control can be performed according to the user category (UE Category, Cat for short).
  • the types of UE Category are as follows: Cat-M1, Cat-M2, Category-0, Cat-1, Category-2,..., UE Category represents the terminal capability level , Indicating the data processing capabilities (download and upload rates) supported by the terminal, the maximum space division multiplexing, modulation and coding capabilities, etc.; one user category or multiple user categories can be preset, for the part of the user equipment of the preset category Bandwidth access control; for example, Cat-0, Cat-1, Cat-2, ... connect more user equipment, you can set to only perform part of the bandwidth of Cat-0, Cat-1, Cat-2 user equipment Access control.
  • the structure of IE can be expressed in the following way:
  • barredCategory represents the category of user equipment that is forbidden to access.
  • the structure of IE can be expressed in the following way:
  • the restricted access information defines that each user equipment category of a plurality of user equipment categories is associated with an allowed access state or a barred access state of the final target partial bandwidth.
  • the user equipment can be accessed to control part of the bandwidth according to the access priority from the upper layer.
  • the access priority comes from, for example, the combination mapping of defined access identities and access categories. ; It can also be other priorities mapped from more combinations, which is not limited in the present invention.
  • the access priority for example, in TS 22.261 6.22, defines one or more mapping combinations of Access identities, Access Category, or other priorities.
  • An access priority threshold can be preset, and some bandwidth access control for user equipment with an access priority greater than this threshold can be performed; an access priority or multiple access priorities can also be preset to control the preset access
  • the user equipment of the incoming priority performs access control.
  • the IE format of part of the bandwidth-restricted information can be: list each user category, and the access status of this category after each user category; it can be the user category that will be barred from access status Enumerate, enumerate the user categories in the allowed access state; the IE format is not limited to the above format.
  • the IE format of part of the bandwidth limited information can be: list each access priority, and the access status of this priority after each access priority; it can be List the access priority in the prohibited access state, and list the access priority in the permitted access state; the IE format is not limited to the above format.
  • the structure of IE can be expressed in the following way:
  • priority-1Access and priority-2Access represent the access priority of the user equipment. Allowed indicates the state of allowed access; notAllowed indicates the state of prohibited access.
  • structure of IE can be expressed in the following way:
  • Each bit in barredAccessPriority represents an access priority.
  • the structure of IE can be expressed in the following way:
  • barredAccessPriority represents an access priority.
  • the restricted access information defines that each access priority of a plurality of user equipment access priorities is associated with the permitted access state or the barred access state of the final target bandwidth, where The access priority includes at least the access identity or access category of the user equipment.
  • the user equipment queries whether each part of the bandwidth is restricted, and sends a query command for restricted access information of the partial bandwidth to the base station through RRC signaling.
  • the base station judges the access status of the partial bandwidth .
  • the IE information can be the above-mentioned information. Any one of the aforementioned base stations notifies the user equipment.
  • ServingCellConfigCommon includes the configuration of downlink BWP mainly as follows:
  • the configuration of the initial uplink BWP is mainly related to RACH, PUSCH, and PUSCH:
  • the configuration in the BWP#0Dedicated part, and finally the configuration of the initial downlink BWP, is also mainly the configuration of PDSCH and PDCCH:
  • the initial BWP (BWP#0) has two configurations.
  • configuration 1 there is only the ServingCellConfigCommon part, including the uplink public BWP and the downlink public BWP; the configuration 2 includes the ServingCellConfigCommon part and the ServingCellConfig part.
  • the ServingCellConfig part includes the upstream dedicated BWP and the downstream dedicated BWP.
  • the ServingCellConfigCommon part is a cell-level public configuration, that is to say, this part is shared by all user equipment; at the same time, a part of configuration 2 can be configured for user equipment exclusive, and this part of information is randomized
  • the MSG4 message of the access process is configured; for the initial BWP of configuration 2, it includes two parts of time-frequency resources, dedicated and public.
  • the ServingCellConfigCommon part will configure the common information of the initial BWP, such as the starting position, bandwidth, cyclic prefix (CP), subcarrier spacing (SCS), and physical downlink control channel (Physical Downlink Control Channel, PDCCH) ) Public configuration information and physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) public configuration information.
  • CP cyclic prefix
  • SCS subcarrier spacing
  • PDCCH Physical Downlink Control Channel
  • PDCCH Physical Downlink Control Channel
  • the public configuration information of the PDCCH includes the initial control resource set (Control-resource set, CORESET) CORESET#0, the initial SearchSpace (SearchSpace#0), and may also include other CORSET (control resource set) and SearchSpace (search space) information .
  • the following behavior example of ServingCellConfigDedicated will configure the proprietary information of the initial BWP, such as PDCCH/PDSCH proprietary configuration information; in the PDCCH proprietary configuration, it contains non-initial CORESET and non-initial SearchSpace information, when this part of the configuration overlaps with the public configuration The priority of the proprietary configuration is higher.
  • the present invention treats the overlapping part as a proprietary configuration; for example, the PDSCH proprietary information includes the demodulation reference signal (demodulation reference signal, DMRS) configuration, and the transmission configuration indication (Transmission Configuration Indication, TCI) configuration and other information.
  • the downlink such as the initial COREST/PDSCH resource
  • the uplink such as the PRACH resource/PUSCH resource/PUCCH resource are common to the UE in the cell. If a large number of user equipment switches back to the initial BWP, and monitor or data scheduling is performed on the common resource Dealing with it is likely to cause an overload of public resources.
  • the embodiment of the present invention performs access control on the initial part of the bandwidth, the base station judges the access state of the initial part of the bandwidth, obtains the channel state information of the initial part of the bandwidth, and obtains the resource state information of the initial part of the bandwidth from the channel state information.
  • Bandwidth resources include public resources and dedicated resources, and the base station respectively determines whether public resources and dedicated resources are restricted to access.
  • the base station presets resource restriction conditions, and judges whether the acquired resource status information meets the resource restriction conditions. If the public resource/exclusive resource status information meets the resource restriction condition, the public resource/exclusive resource is set to a prohibited access state; If the public resource/exclusive resource status information does not meet the resource restriction conditions, the public resource/exclusive resource is set to the allowed access state.
  • Both public resources and proprietary resources are in the forbidden access state, and the initial part of the bandwidth is set to the forbidden access state. If the public resource is in the forbidden access state and the dedicated resource is in the allowed access state, the initial part of the bandwidth can be set to the forbidden access state or the allowed access state.
  • the user equipment Only perform service processing on the accessed dedicated resources such as PDCCH monitoring in the dedicated CORESET; if the initial public resources are in the forbidden access state, the non-initial public resources and/or the dedicated resources are in the permitted state In the access state, the initial part of the bandwidth can be set to the forbidden or allowed state.
  • the user equipment When the initial part of the bandwidth is allowed to access, the user equipment only performs service processing on the accessed public resources, such as PDCCH monitoring and other actions are performed in the initial CORESET.
  • the judgment of the uplink common resources of the initial part of the bandwidth is the same as the above process.
  • the downlink of the initial part of the bandwidth is mainly COREST resources, and the uplink PRACH, PUSCH, and PUSCH can be considered separately or in an overall plan.
  • the non-initial CORESET in the public configuration part of the initial BWP its judgment principle can be the same as or different from the initial CORESET, and its limited results are presented to the user equipment separately.
  • the base station generates restricted access information according to the restricted result, that is, the access state of the initial partial bandwidth, and informs the user equipment through broadcast or dedicated RRC signaling.
  • the IE format of the downlink initial partial bandwidth restricted access information may be, but is not limited to: List the configuration of the initial part of the downlink bandwidth, such as initial CORESET, public CORESET, exclusive CORESET, etc., and record the access status of each resource separately.
  • the user equipment can also be selected for restricted control according to the user category and access priority.
  • the IE of restricted access information may include the following examples:
  • the coresetZeroBarred, commonCoresetBarred and dedicatedCoresetBarred represent initial CORESET, public CORESET and proprietary CORESET, respectively.
  • the IE of restricted access information may include the following examples:
  • CoresetZeroBarred, CommonCoresetBarred, and DedicatedCoresetBarred can also perform restricted control according to user type and access priority, as described in the previous implementation manner.
  • the user equipment queries whether the initial part of the bandwidth is restricted, and sends a query command for the restricted access information of the initial part of the bandwidth to the base station through RRC signaling.
  • the base station determines the access of the initial part of the bandwidth. Into state. After determining whether the target part of the bandwidth allows the new user to access, the base station generates target restricted access information, and feeds the information back to the user equipment.
  • step 102 the restricted access information is sent to the user equipment.
  • the base station After determining the access state of a part of the bandwidth, the base station generates restricted access information, and then sends the information to the user equipment through RRC signaling.
  • the base station will periodically or according to the channel state information of each part of the bandwidth reported by the user equipment, re-evaluate whether each part of the bandwidth is allowed to access new users. If the base station judges regularly, when the timer expires, it will notify the user equipment of the latest partial bandwidth restricted access information through broadcast or RRC commands; if the base station judges the access status based on the received partial bandwidth channel state information Different from the previous time, the user equipment is notified of the latest partial bandwidth restricted access information through broadcast or RRC command again.
  • the message can be all the partial bandwidth, or a part of the partial bandwidth, or only the restricted access information of the changed partial bandwidth.
  • the user equipment After the user equipment receives the restricted access information re-sent by the base station, it will refresh the saved restricted access information of part of the bandwidth.
  • a partial bandwidth switching method includes: receiving restricted access information sent by a base station; determining a final target partial bandwidth according to the restricted access information, and the final target partial bandwidth is in a state of allowing access.
  • step 201 the restricted access information sent by the base station is received.
  • the base station generates the restricted access information of each part of the bandwidth according to the access state of each part of the bandwidth, and then sends the restricted access information of each part of the bandwidth to the user equipment through broadcast or dedicated RRC signaling, and the user equipment receives each part.
  • Bandwidth restricted access information For example, the base station generates the restricted access information of each part of the bandwidth according to the access state of each part of the bandwidth, and then sends the restricted access information of each part of the bandwidth to the user equipment through broadcast or dedicated RRC signaling, and the user equipment receives each part.
  • Bandwidth restricted access information bandwidth restricted access information.
  • the user equipment first presets the target partial bandwidth before or during the start of the partial bandwidth switching procedure, and then queries the base station for restricted access information of the partial bandwidth through RRC signaling. After the base station judges the access status of this part of the bandwidth, it feeds back the information to the user equipment. After the user equipment receives the feedback information, if the preset target part of the bandwidth is allowed to access, it will continue the handover process and switch to this part of the bandwidth; if the preset target part of the bandwidth is forbidden to access, stop the handover process, or select a new one For the target part of the bandwidth, the process of querying restricted access information is initiated again. It may also be that the user equipment first queries the restricted access information of each part of the bandwidth, and then determines the final target part of the bandwidth according to the feedback information of the base station, and initiates a handover process to it.
  • the base station when the base station only performs access control on the initial part of the bandwidth, it generates initial restricted access information and sends it to the user equipment.
  • the initial restricted access information received by the user equipment includes public resource restricted access information and proprietary access information.
  • the resource restricted access information determines whether the initial part of the bandwidth can be accessed according to the initial restricted access information.
  • the user equipment queries the limited access information of the initial partial bandwidth as needed, for example, initiates the query before or during the process of initiating the active handover to the initial partial bandwidth, and then receives the initial limited access information fed back by the base station, and determines Whether the initial part of the bandwidth can be accessed.
  • step 202 the final target partial bandwidth is determined according to the restricted access information, and the final target partial bandwidth is in a state of allowing access.
  • the user equipment determines the final target partial bandwidth, and the final target partial bandwidth is allowed to be accessed.
  • the user equipment determines whether the preset target part bandwidth is restricted, and if the target part bandwidth is in the allowed access state, the target part bandwidth is the final target part bandwidth; if the target part When the bandwidth is in the state of prohibiting access, a target partial bandwidth is preset again.
  • the user equipment first queries the preset limited access information of the target part bandwidth, after receiving the access status of the target part bandwidth fed back by the base station, if access is allowed, the target part bandwidth is determined For the final target part of the bandwidth, if access is prohibited, the user equipment resets a target part of the bandwidth or stops actively initiated handover procedures.
  • the base station when access control is performed on only the initial part of the bandwidth, it is judged whether the public resources and the dedicated resources in the initial part of the bandwidth are allowed to be accessed, and the base station generates initial restricted access information from the judgment result and sends it to the user equipment.
  • the device determines whether to allow access to the initial part of the bandwidth during or before the handover process. According to the initial restricted access information received, the user equipment stops the handover process if both public resources and dedicated resources are forbidden to access; if the public resources are forbidden to access, the dedicated resources are allowed to be accessed, and then the access is allowed.
  • service processing is performed only in the exclusive resources that are allowed to be accessed; if the initial public resources are forbidden to access, the non-initial public resources and/or the exclusive resources are allowed to be accessed, and then the initial part is allowed to be accessed.
  • service processing is performed only in the public resources that are allowed to be accessed.
  • Figure 4 is a working flow chart of a partial bandwidth switching method provided by an embodiment of the present invention.
  • the base station determines whether each part of the bandwidth allows new users to access, and generates the restriction of each part of the bandwidth. Access information, this information is sent to the user equipment, and the user equipment initiates an active handover process, determines the target part of the bandwidth or stops the handover process according to the access state of each part of the bandwidth.
  • Figure 5 is a working flow chart of another partial bandwidth switching method provided by an embodiment of the present invention. Send a query instruction for restricted access information of part of the bandwidth. After receiving the query instruction, the base station determines whether each part of the bandwidth allows access to a new user.
  • each user in the cell determines whether each part of the bandwidth configured by the user equipment allows a new user to switch, and send the information to the user equipment through RRC signaling.
  • the user equipment initiates an active handover process, determines the target part of the bandwidth or stops the handover process according to the restricted access information of each part of the bandwidth.
  • FIG. 6 is a schematic diagram of an exemplary wireless communication system 700 for performing the method disclosed according to the embodiments of the present invention.
  • the embodiments described herein can be implemented using any suitably configured hardware and/or software.
  • 6 illustrates a system 700, including a radio frequency circuit 710, a baseband circuit 720, a processor 730, a memory/storage device 740, a sensor 770, and an input/output (input/output, I/O) interface 780, which are connected to each other as shown .
  • a radio frequency circuit 710 including a radio frequency circuit 710, a baseband circuit 720, a processor 730, a memory/storage device 740, a sensor 770, and an input/output (input/output, I/O) interface 780, which are connected to each other as shown .
  • I/O input/output
  • the processor 730 may include circuitry, such as (but not limited to) one or more single-core or multi-core processors.
  • the processor may include any combination of a general-purpose processor and a special-purpose processor, such as a graphics processor and an application processor (application processor).
  • the processor may be coupled to the memory/storage device 740 and configured to execute instructions stored in the memory/storage device 740 to enable various applications and/or operating systems running on the system.
  • the transceiver 720 may include circuitry, such as (but not limited to) one or more single-core or multi-core processors.
  • the processor may include a baseband (baseband) circuit and a radio frequency (RF) circuit.
  • the baseband circuit can handle various radio control functions and communicate with one or more radio networks through radio frequency circuits. Radio control functions can include, but are not limited to, signal modulation, encoding, decoding, radio frequency conversion, and so on.
  • the baseband circuit can provide communications compatible with one or more radio technologies.
  • the baseband circuit can support NR, evolved Universal Terrestrial Radio Access Network (EUTRAN) and/or other wireless metropolitan area networks (Wireless Metropolitan Area Network, WMAN), wireless Local area network (Wireless Local Area Network, WLAN), Wireless Personal Area Network (Wireless Personal Area Network, WPAN).
  • EUTRAN evolved Universal Terrestrial Radio Access Network
  • WMAN wireless Metropolitan Area Network
  • WLAN wireless Local Area Network
  • WPAN Wireless Personal Area Network
  • An implementation in which the baseband circuit is configured to support radio communication of multiple wireless protocols may be referred to as a multi-mode baseband circuit.
  • the baseband circuit may include circuits for operating signals that are not strictly regarded as baseband frequencies.
  • the baseband circuit may include a circuit that operates on a signal having an intermediate frequency (i.e., baseband frequency and radio frequency).
  • the radio frequency circuit can communicate with a wireless network using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuit may include switches, filters, amplifiers, etc. for communication with a wireless network.
  • the RF circuit may include circuitry for operating with signals that are not strictly regarded as being in radio frequency.
  • the RF circuit may include a circuit for working with signals having an intermediate frequency between the baseband frequency and the radio frequency.
  • circuit can refer to, participate in, or include application specific integrated circuits (Application Specific Integrated Circuit, ASIC), electronic circuits, processors (shared, dedicated chips or chipsets), and/or execute one or more software or Firmware programs, combinational logic circuits, and/or other suitable hardware components that provide the above-mentioned functions.
  • ASIC Application Specific Integrated Circuit
  • the circuit of the electronic device or the function related to the circuit may be implemented in one or more software or firmware modules.
  • part or all of the components of the baseband circuit, the application circuit, and/or the memory/storage device 740 may be implemented together on a system on a chip (SOC).
  • SOC system on a chip
  • the memory/memory 740 can be used to load and store data and/or instructions for the system, for example.
  • the memory/memory may include any combination of suitable volatile memory, such as dynamic random access memory (DRAM) and/or non-volatile memory, such as flash memory.
  • the I/O interface 780 may include one or more user interfaces for implementing user interaction with the system and/or peripheral component interfaces for implementing the interaction between peripheral components and the system.
  • the user interface may include, but is not limited to, a physical keyboard or keypad, touch pad, speaker, microphone, etc.
  • the peripheral component interface may include, but is not limited to, a non-volatile memory port, a universal serial bus (USB) port, an audio jack, and a power interface.
  • USB universal serial bus
  • the senor 770 may include one or more sensing devices to determine environmental conditions and/or location information related to the system.
  • the sensor may include, but is not limited to, a gyroscope sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit.
  • the positioning unit may also be a part of the baseband circuit and/or radio frequency circuit, or interact with the baseband circuit and/or radio frequency circuit to communicate with components of the positioning network, for example, global positioning system (GPS) satellite communication.
  • the system 700 may be a mobile computing device, such as, but not limited to, a laptop computing device, a tablet computing device, a netbook, an ultrabook, a smart phone, etc.
  • the system may have more or fewer components, and/or different architectures. Where appropriate, the methods described here can be implemented as computer programs.
  • the computer program can be stored in a storage medium, such as a non-transitory storage medium.
  • the embodiments of the present disclosure may adopt a combination of technologies/processes in 3GPP specifications to create a final product.
  • a person with ordinary skills can understand that each unit, algorithm, and step described and disclosed in the embodiment of the present disclosure is implemented using electronic hardware or a software combination of computer and electronic hardware. Whether these functions run in hardware or software depends on the application conditions and design requirements of the technical solution. People with ordinary skills can use different ways to implement functions for each specific application, and such implementation should not go beyond the scope of the present disclosure.
  • a person with an ordinary technical level can understand that since the working processes of the above systems, devices, and units are basically the same, they can refer to the working processes of the systems, devices, and units in the above embodiments. For ease of description and simplification, these working processes are not described in detail here.
  • the system, device, and method disclosed in the embodiments of the present invention may also be implemented in other ways.
  • the above embodiment is only exemplary.
  • the division of units is only based on the division of logic functions, and other divisions exist in the implementation. It is possible to combine or integrate multiple units or components in another system. It is also possible to omit or skip certain features.
  • the displayed or discussed mutual coupling, direct coupling, or communication coupling, etc. operate indirectly or communicatively through some ports, devices, or units through electrical, mechanical, or other types of means.
  • a unit that is a separate component is or is not a physically separate unit. These units are physical units or not, that is, they are located in one place or distributed on multiple network units, and these units are physical units or not. According to the purpose of the embodiment of the present invention, part or all of the units are used. In addition, each functional unit in this embodiment may be integrated in one processing unit, or physically independent, or two or more units integrated in one processing unit.
  • the software functional unit is implemented and used and sold as a product, it can be stored in a computer readable storage medium.
  • the technical solutions proposed by the technical solutions of the present disclosure may be implemented essentially or partially in the form of software products.
  • a part of the technical solution that is advantageous to the traditional technology can be implemented in the form of a software product.
  • the software product in the computer is stored in a storage medium, and the software product includes commands for a computing device (for example, a personal computer, a server, or a network device) to run all or part of the steps disclosed in the technical solution of the present disclosure.
  • the storage medium includes a USB disk (USB disk), a mobile hard disk, a read-only memory (read-only memory, ROM), a random access memory (random access memory, RAM), a floppy disk, or other media capable of storing program codes.
  • USB disk USB disk
  • ROM read-only memory
  • RAM random access memory
  • floppy disk or other media capable of storing program codes.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil de changement de partie de largeur de bande. Le procédé de changement comprend les étapes suivantes : déterminer un état d'accès d'une partie de largeur de bande, et produire des informations d'accès restreint selon l'état d'accès ; et envoyer les informations d'accès restreint à un équipement d'utilisateur. L'équipement d'utilisateur détermine une partie de largeur de bande cible finale selon les informations d'accès restreint, et passe à la partie de largeur de bande cible finale, ou arrête un processus de changement. Par conséquent, selon la solution, dans le processus de passage de la partie de largeur de bande existante à une partie de largeur de bande initiale, le passage à la partie de largeur de bande initiale peut être interdit. Cette solution est applicable à des situations de passage entre différents types de parties de largeur de bande, mais pas seulement la situation de passage à la partie de largeur de bande initiale
PCT/CN2021/102078 2020-06-24 2021-06-24 Procédé et appareil de changement de partie de largeur de bande WO2021259358A1 (fr)

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CN114667764A (zh) * 2022-02-14 2022-06-24 北京小米移动软件有限公司 带宽可部分切换方法及装置、通信设备及存储介质

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EP3506713A1 (fr) * 2017-12-28 2019-07-03 ASUSTek Computer Inc. Procédé et appareil pour la sélection d'une partie de bande passante pour une procédure d'accès aléatoire (ra) dans un système de communication sans fil
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CN110661676A (zh) * 2018-06-29 2020-01-07 电信科学技术研究院有限公司 一种带宽部分的测量方法、配置方法、终端及网络设备
CN111132278A (zh) * 2018-10-31 2020-05-08 华为技术有限公司 Bwp的分配方法及装置

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EP3506713A1 (fr) * 2017-12-28 2019-07-03 ASUSTek Computer Inc. Procédé et appareil pour la sélection d'une partie de bande passante pour une procédure d'accès aléatoire (ra) dans un système de communication sans fil
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CN111132278A (zh) * 2018-10-31 2020-05-08 华为技术有限公司 Bwp的分配方法及装置
CN110313215A (zh) * 2019-05-24 2019-10-08 北京小米移动软件有限公司 基于非授权频谱的通信方法、装置及存储介质

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