CN113840347A

CN113840347A - Partial bandwidth switching method and device

Info

Publication number: CN113840347A
Application number: CN202010591337.XA
Authority: CN
Inventors: 冯爱娟; 生嘉
Original assignee: JRD Communication Shenzhen Ltd
Current assignee: JRD Communication Shenzhen Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-12-24
Also published as: WO2021259358A1

Abstract

The embodiment of the invention discloses a partial bandwidth switching method and a partial bandwidth switching device, wherein the method comprises the following steps: determining the access state of partial bandwidth, generating limited access information according to the access state, and sending the limited access information to user equipment. And the user equipment determines the final target part bandwidth according to the limited access information, switches to the final target part bandwidth, or stops the switching process. Therefore, the scheme can prohibit switching back to the initial partial bandwidth in the process of switching back to the initial partial bandwidth from the existing partial bandwidth, and is suitable for a scene of switching between various types of partial bandwidths, not only a scene of switching back to the initial partial bandwidth.

Description

Partial bandwidth switching method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for switching a Bandwidth Part (BWP).

Background

Usage scenarios for 5G include enhanced mobile broadband (eMBB), large-scale machine type (mtc), ultra-reliable and low-latency communication (URLLC). There is also a class of time-sensitive, relatively low equipment complexity application scenario between mMTC and URLLC, for example, novel Internet of things application scenarios such as industrial Internet of things sensors, intelligent monitoring in smart cities, wearable equipment, and the like. The complexity, the cost and the like of the novel Internet of things equipment are compared with URLLC/eMBB equipment, the size of the equipment is relatively small, and the requirements on bandwidth and peak rate are not very high. The 3GPP RAN1 group studied in the R17 clause "supported of Reduced Capability NR devices" how to support such a new type of internet of things device, i.e., Reduced Capability User Equipment (Reduced Capability User Equipment), abbreviated as a redmap UE. The bandwidth of a red map UE is reduced more than that of a legacy New Radio (NR) UE. BWP (Bandwidth Part), a concept introduced in NR, is a concept. In NR, the bandwidth of UE can be dynamically changed, when the traffic is large, the system configures a large bandwidth BWP for UE; when the traffic volume is small, a small bandwidth is configured for the UE. BWPs are mainly classified into two categories: initial BWP and proprietary BWP. The initial BWP is mainly used to receive RMSI (remaining minimum system information), initiate random access (random access), and the like; while the proprietary BWP is mainly used for data traffic transmission, the bandwidth of the proprietary BWP is generally larger than the initial BWP. The upstream and downstream have their own initial BWP and proprietary BWP, respectively. The Redcap UE is used as the equipment of the Internet of things, the quantity of the Redcap UE in a cell is large, and the capacity of limited wireless resources where BWP is located is large. Particularly, signaling such as a Paging Control Channel (PCCH) for which the initial BWP is to carry a page (Paging), a Physical Random Access Channel (PRACH) for a Random Access procedure, and Radio Resource Control (RRC), the load of the initial downlink BWP increases with the increase of the number of Redcap UEs. The coverage rate is affected by Redcap UE complexity reduction, such as antenna number reduction, and in order to improve the coverage rate, the network transmits in the broadcast channel with low code rate or retransmission technology, and this application, in addition to the huge number of Redcap UEs, further aggravates the load of the initial BWP.

In the current 3GPP specification, there are 4 triggering methods for BWP handover: handover based on DCI indication: when there is data scheduling, the scheduling DCI carries a BWP switching instruction at the same time, and after receiving the instruction, the UE performs BWP switching and then performs data processing; the DCI scheduling is mainly used for switching from the initial BWP to the proprietary BWP for data processing; but the possibility of switching back from the proprietary BWP to the initial BWP by scheduling DCI is not excluded when the proprietary BWP of the higher layer configuration is < 4. Handover based on RRC indication: the method is used for switching the UE from the initial BWP to the configured firstActiveBWP after the UE finishes the initial access and enters the RRC connected state or after the RRC is reconfigured or the SCell is activated; this scheme is a scheme after the initial random access, and cannot solve the problem that the initial random access procedure is too heavy for the initial BWP. Timer-based switching: when configuring service cell configuration for UE, a base station will perform uplink and downlink exclusive BWP configuration and also configure an Inactive timer of downlink BWP; the timer is used for switching to a default downlink BWP (if configured) after the timer is overtime if the UE has no service scheduling for a long time, or switching to an initial downlink BWP; this scheme is to switch from the active downlink BWP to the default downlink BWP or the initial downlink BWP. Switching in the random access process: the active 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 also needs to be switched to the pair corresponding to the uplink BWP; random access procedure the upstream BWP and the downstream BWP are to be paired (using the same BWP number) messaging messages and thus will be coupled together for handover.

The scene of switching back to the initial BWP can be seen in the four BWP switching manners, which has already been mentioned above that in application of the reccap UE, the initial BWP is overloaded, and if the initial BWP is switched back again, the load of the initial BWP is increased. Accordingly, there is a need in the art for improvements.

Disclosure of Invention

The embodiment of the invention provides a partial bandwidth switching method and a partial bandwidth switching device, which forbid switching back to an initial partial bandwidth.

The partial bandwidth switching method provided by the embodiment of the invention comprises the following steps: determining the access state of partial bandwidth, and generating limited access information according to the access state; and sending the limited access information to the user equipment.

Optionally, in some embodiments of the present invention, the determining an access status of a partial bandwidth includes:

and receiving a query instruction of the limited access information sent by the user equipment.

obtaining the classification of the user equipment, wherein the partial bandwidth is a partial bandwidth corresponding to the user equipment of a preset classification;

the classification includes at least a user category or an access priority.

and receiving a query instruction of target limited access information sent by the user equipment, wherein the target limited access information is limited access information corresponding to a target part of bandwidth.

acquiring channel state information of the partial bandwidth;

judging that the channel state information meets a preset access prohibition condition, and setting the partial bandwidth as the access prohibition state;

and judging that the channel state information does not meet the access prohibition condition, and setting the partial bandwidth as the access permission state.

Optionally, in some embodiments of the present invention, the determining that the channel state information satisfies a preset access barring condition, and the setting of the partial bandwidth as the access barring state includes:

the channel state information includes a combination of at least one or more of the following: the method comprises the following steps of accessing the user number, the signal-to-noise ratio, the user number in a wireless resource control connection state, the bottom noise, the channel quality indication, the reference signal receiving quality and the reference signal receiving power;

the access prohibition condition comprises that at least the number of the accessed users is larger than a preset user number threshold value, and the signal-to-noise ratio is smaller than a preset signal-to-noise ratio threshold value.

acquiring resource state information of an initial part of bandwidth;

judging that the resource state information meets a preset resource limited condition, and setting the resource to be in the access prohibition state;

judging that the resource state information does not meet the resource limited condition, and setting the resource to be in the access-allowed state;

the resources include public resources and proprietary resources.

and receiving an inquiry instruction of initial limited access information sent by the user equipment, wherein the initial limited access information is limited access information corresponding to the initial part of bandwidth.

Optionally, in some embodiments of the present invention, the determining that the resource state information satisfies a preset resource restriction condition, and setting the resource to the access prohibition state includes:

the common resource and the exclusive resource are in the access prohibited state, and the initial part of bandwidth is set to the access prohibited state.

Optionally, in some embodiments of the present invention, the determining that the resource status information does not satisfy the resource limitation condition, and setting the resource to the access permission state includes:

when the public resource is in the access prohibition state and the private resource is in the access permission state, the initial partial bandwidth is set to be in the access permission state, and the service of the user equipment is allowed to be processed on the private resource.

when the initial public resource is in the access prohibited state, and the non-initial public resource and/or the dedicated resource is in the access allowed state, the initial partial bandwidth is set to the access allowed state, and the service of the user equipment is allowed to be processed on the non-initial public resource.

The partial bandwidth switching method provided by the embodiment of the invention comprises the following steps: receiving limited access information sent by a base station; and determining the final target part bandwidth according to the limited access information, wherein the final target part bandwidth is in an access allowing state.

Optionally, in some embodiments of the present invention, the determining a final target partial bandwidth according to the restricted access information includes:

presetting a target part bandwidth, wherein the target part bandwidth is in an access permission state, and the target part bandwidth is a final target part bandwidth;

and when the target part bandwidth is in an access prohibition state, resetting the target part bandwidth.

Optionally, in some embodiments of the present invention, the receiving restricted access information sent by the base station includes:

and sending the inquiry instruction of the limited access information to the base station.

presetting the target part bandwidth;

and sending a query instruction of target limited access information to the base station, wherein the target limited access information is limited access information corresponding to the target part of bandwidth.

and receiving initial limited access information sent by the base station, wherein the initial limited access information comprises public resource limited access information and special resource limited access information.

and sending a query instruction of the initial limited access information to the base station, wherein the initial limited access information is limited access information corresponding to the initial partial bandwidth.

the public resource and the special resource are in a forbidden access state, and the switching process is stopped;

the public resource is in the access prohibition state, the special resource is in the access permission state, and the service of the user equipment is processed on the special resource; or stopping the switching process;

processing traffic of the user equipment on the non-initial common resource when the initial common resource is in the access-barred state and the non-initial common resource and/or the dedicated resource is in the access-allowed state; or stopping the handover procedure.

The methods disclosed herein may be programmed as computer-executable instructions stored in a non-transitory computer-readable medium. When loaded into a computer, the non-transitory computer-readable medium instructs the processor of the computer to perform the method.

The non-volatile computer-readable medium may include at least one of a hard disk, an optical storage device, a magnetic storage device, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an EPROM, an electronically erasable programmable read-only memory, and a flash memory.

The methods disclosed herein may be programmed as a computer program product that causes a computer to perform the methods of the present invention.

The embodiment of the invention generates the limited access information according to the access state by determining the access state of partial bandwidth, and sends the limited access information to the user equipment. And the user equipment determines the final target part bandwidth according to the limited access information, switches to the final target part bandwidth, or stops the switching process. Therefore, the scheme can prohibit switching back to the initial partial bandwidth in the process of switching back to the initial partial bandwidth from the existing partial bandwidth, and is suitable for a scene of switching between various types of partial bandwidths, not only a scene of switching back to the initial partial bandwidth.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a diagram of a base station, a user equipment and a network entity according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a partial bandwidth switching method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating another partial bandwidth switching method according to an embodiment of the present invention;

fig. 4 is a flowchart of a partial bandwidth switching method according to an embodiment of the present invention;

fig. 5 is a flowchart of another partial bandwidth switching method according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of a system to which the partial bandwidth switching method according to the embodiment of the present invention is applied.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a partial bandwidth switching method and a partial bandwidth switching device. The user equipment comprises an industrial Internet of things sensor, intelligent monitoring in a smart city, wearable equipment and the like.

The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.

Referring to fig. 1, a User Equipment (UE) 10a, a UE10 b, a Base Station (BS) 200a and a network entity apparatus 300 perform a method according to an embodiment of the present invention. Connections between devices and device components are shown in fig. 1 in the form of lines and arrows. The UE10a may include a processor 11a, a memory 12a, and a transceiver 13 a. The UE10 b may include a processor 11b, a memory 12b, and a transceiver 13 b. The base station 200a may include a processor 201a, a memory 202a, and a transceiver 203 a. Network entity apparatus 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, programs, and/or methods described in this description. Multiple layers of radio interface protocols may 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 transceiver 13a, 13b, 203a and 303 is operatively coupled to a connected processor to transmit and/or receive radio signals. The base station 200a may be one of an eNB, a gNB, or other radio node.

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 circuitry, and/or data processing devices. Each of the

memories

12a, 12b, 202a, and 302 may include a read-only memory (ROM), a Random Access Memory (RAM), a flash memory (random access memory), a memory card (memory card), a storage medium, other storage devices, and/or any combination of memories and storage devices. Each transceiver 13a, 13b, 203a, and 303 may include baseband circuitry and Radio Frequency (RF) circuitry to process radio frequency signals. When the embodiments of the present invention are implemented in software, the techniques described herein may be implemented by modules, procedures, functions, entities, and the like, which perform the functions described herein. The modules may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor, in which case it can be communicatively coupled to the processor via various means as is known in the art.

The network entity apparatus 300 may be a node in a Central Network (CN). The CN may include an LTE CN or a 5G core (5G core, 5GC), which may include network entities such as a User Plane Function (UPF), a Session Management Function (SMF), a mobility management function (AMF), a Unified Data Management (UDM), a Policy Control Function (PCF), a control plane/user plane separation (CUPS), an authentication server (AUSF), an AUSF, a Network Slice Selection Function (NSSF), a Network Exposure Function (NEF), and the like.

A partial bandwidth switching method, comprising: determining the access state of partial bandwidth, and generating limited access information according to the access state; and sending the limited access information to the user equipment.

As shown in fig. 2, the specific flow of the partial bandwidth switching method may be as follows:

in step 101, the base station determines the access state of a part of the bandwidth, and generates limited access information according to the access state.

For example, the base station determines the access state of each bandwidth part, that is, determines whether each bandwidth part allows a new user to access, generates the limited access information of each bandwidth part according to the access state of each bandwidth part, and sends the limited access information of each bandwidth part to the user equipment through broadcast or dedicated RRC signaling. Which may be broadcast to the user equipment via system information such as a master information block (MasterInformationBlock) or a system information block category 1 (systemlnformationblocktype 1).

If part of the bandwidth allows the new user to access, the part of the bandwidth is in an access allowing state, and if the part of the bandwidth does not allow the new user to access, the part of the bandwidth is in an access forbidding state. The base station acquires the channel state information of each partial bandwidth, judges whether the channel state of the partial bandwidth is deteriorated to a certain degree according to the acquired channel state information of the partial bandwidth or other factors such as time and a certain strategy, and if so, the partial bandwidth is in an access prohibition state and new users are not allowed to access, so that the channel state is prevented from being further deteriorated.

The channel state information of the partial bandwidth includes, but is not limited to, the number of users accessing, Signal-to-noise ratio (SINR), the number of users in a radio resource control connection state, noise floor, Channel Quality Indicator (CQI), Reference Signal Received Quality (Reference Signal Received Quality), and Reference Signal Received Power (Reference Signal Received Power); the sources of channel state information may be: the MSG4 sends measurement configuration to the user equipment through broadcast signaling before, and the user equipment reports the channel state information to the base station after measurement; or the base station acquires the information through history reserved information or information reported by other user equipment in the cell.

The policy that a part of bandwidth preset by the base station does not allow a new user to enter, that is, the condition of prohibiting access to the part of bandwidth includes that the number of users accessing is greater than a preset user number threshold, the signal-to-noise ratio is less than a preset signal-to-noise ratio threshold, or a combination of two conditions of prohibiting access, or a time period is set, and the time period is used as a time period for restricting access to the new user, and the condition of prohibiting access may be any one of the conditions or a combination thereof, and is not limited to the listed embodiments of the present invention. If the channel state information of a part of bandwidth meets the access prohibition condition, the part of bandwidth is in the access prohibition state; and if the channel state information of the partial bandwidth does not meet the access forbidding condition, the partial bandwidth is in an access permitting state.

After the base station determines the access state according to the channel state Information of the partial bandwidth, the base station generates corresponding restricted access Information, and notifies the user equipment of Information Elements (IEs) of the partial bandwidth restricted access Information, such as MSG4 of random access, reconfiguration and the like, added in broadcast or proprietary RRC signaling. The IE includes each partial bandwidth and the access status of each partial bandwidth, and the structure of the IE is not limited. The changed limited access information of partial bandwidth, the limited access information of a single partial bandwidth, or the limited access information of all configured partial bandwidths may be carried in the signaling. For example, the structure of an IE may be represented in the following manner:

TABLE 1

The restricted access information defines each of the plurality of bwp-Id identified partial bandwidths as being in an allowed access state or a forbidden access state.

The base station may perform access state determination on part of bandwidths of all user equipments accessing the base station, but the determination is not required for part of bandwidths of all user equipments. Access control may be performed according to a user Category (UE Category, Cat for short), where the UE Category is as follows: Cat-M1, Cat-M2, Cat-0, Cat-1, Cat-2, … and UE Category represent terminal capability levels, which indicate data processing capabilities (downloading and uploading rates), maximum space division multiplexing and modulation and coding capabilities and the like supported by the terminal; a user class or a plurality of user classes can be preset, and access control is carried out on part of bandwidth of user equipment in the preset class; for example, there are many user equipments connected to Cat-0, Cat-1, Cat-2, and …, and access control may be performed only on part of bandwidths of the user equipments of Cat-0, Cat-1, and Cat-2. For example, the structure of an IE may be represented in the following manner:

TABLE 2

Allowed denotes an Allowed access state; notAllowed indicates a barred access state. Alternatively, the structure of the IE may be represented in the following manner:

TABLE 3

barredCategory indicates the class of user equipment to which access is barred. Alternatively, the structure of the IE may be represented in the following manner:

TABLE 4

In an example of the IE, the restricted access information defines an allowed access state or a forbidden access state for each of a plurality of user equipment classes associated with the final target portion of bandwidth.

In addition, the user equipment may be subjected to Access control of a part of the bandwidth according to an Access priority from a higher layer, where the Access priority is derived from, for example, a combination mapping of a defined Access identity (Access identities) and an Access Category (Access Category); there may be more combinations of other priorities mapped out, and the invention is not limited in this regard. The Access priority, e.g., chapter TS 22.2616.22, defines one or more mapping combinations of Access identities, Access Category, or other priorities. An access priority threshold value can be preset, and the access control of partial bandwidth is carried out on the user equipment with the access priority greater than the threshold value; or, an access priority or multiple access priorities may be preset, and access control may be performed on the user equipment with the preset access priority. For access control according to user category, the IE format of the partial bandwidth limited information may be: listing each user category, and setting the access state of each user category; the user category in the access forbidden state can be listed, and the user category in the access allowed state can be listed; the IE format is not limited to the above form. For access control according to access priority, the IE format of the partial bandwidth limited information may be: enumerating each access priority, and the access state of each access priority is the priority; the access priority of the access forbidden state can be listed, and the access priority of the access allowed state can be listed; the IE format is not limited to the above form. For example, the structure of an IE may be represented in the following manner:

TABLE 5

The priority-1Access and the priority-2Access indicate the Access priority of the user equipment. Allowed denotes an Allowed access state; notAllowed indicates a barred access state. Alternatively, the structure of the IE may be represented in the following manner:

TABLE 6

Each bit in barredacccessfirty represents an access priority. Alternatively, the structure of the IE may be represented in the following manner:

TABLE 7

barredaccess priority represents an access priority. In the example of the IE, the restricted access information defines an allowed access state or a forbidden access state for each of a plurality of user equipment access priorities associated with a final target portion of bandwidth, wherein the access priorities include at least an access identity or an access category of the user equipment.

Optionally, the user equipment queries whether the bandwidth of each part is limited to be accessed, sends a query instruction of limited access information of the bandwidth of the part to the base station through RRC signaling, and after receiving the query instruction, the base station determines the access state of the bandwidth of the part. According to the channel state of the partial bandwidth fed back by each user in the cell, it is determined whether the new user is allowed to access the partial bandwidth configured by the user equipment, and the information is sent to the user equipment through RRC signaling, where the IE information may be any one of the information notified to the user equipment by the base station as described above.

In 3GPP TS38.331, ServingCellConfigCommon includes configurations for downlink BWP mainly including:

TABLE 8

Similarly, the configuration of the uplink initial BWP is mainly related to RACH, PUSCH, and PUSCH:

TABLE 9

The configuration in the BWP #0Dedicated part, and the final configuration for the downlink initial BWP, mainly include the configuration of PDSCH and PDCCH:

watch 10

As can be understood from 3GPP TS38.331, the initial BWP (BWP #0) has two configurations, and configuration 1 has only ServingCellConfigCommon part, including uplink common BWP and downlink common BWP; the configuration 2 includes a ServingCellConfigCommon part and a ServingCellConfig part, and the ServingCellConfig part includes an upstream-dedicated BWP and a downstream-dedicated BWP. It can be appreciated that for ServingCellConfigCommon, the part is a common configuration at the cell level, that is to say that this part is common to all user equipments; meanwhile, in configuration 2, a part of information which is specific to the user equipment can be configured again, and the part of information is configured through the MSG4 message of the random access process; for the initial BWP of configuration 2, both private and common two-part time-frequency resources are involved. The ServingCellConfigCommon part configures common information of the initial BWP, such as a start position, a bandwidth, a Cyclic Prefix (CP), a subcarrier spacing (SCS), and common configuration information of a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH). The common configuration information of the PDCCH includes an initial Control-resource set (CORESET) CORESET #0 and an initial SearchSpace (SearchSpace #0), and may include information such as other CORESET (CORESET) and SearchSpace (search space). ServingCellConfigDedicated following behavior example, the specific information of the initial BWP, such as PDCCH/PDSCH specific configuration information, is configured; in the PDCCH special configuration, information of non-initial CORESET and non-initial SearchSpace is contained, when the part of configuration is overlapped with the public configuration, the priority of the special configuration is higher, and the overlapped part is treated as the special configuration; for example, the PDSCH specific information includes information such as demodulation reference signal (DMRS) arrangement, Transmission Configuration Indication (TCI) arrangement, and the like. In the part of common configuration, downlink resources such as initial COREST/PDSCH resources, and uplink resources such as PRACH resources/PUSCH resources/PUCCH resources are common to UEs in a cell, and if a large number of user equipments are switched back to the initial BWP and monitoring or data scheduling processing is performed on the common resources, overload of the common resources is likely to be caused.

The embodiment of the invention carries out access control on the initial part bandwidth, the base station judges the access state of the initial part bandwidth, acquires the channel state information of the initial part bandwidth, acquires the resource state information of the initial part bandwidth from the channel state information, the resources of the initial part bandwidth comprise public resources and private resources, and the base station respectively determines whether the public resources and the private resources are limited to be accessed. The base station presets a resource limitation condition, judges whether the acquired resource state information meets the resource limitation condition, and if the public resource/dedicated resource state information meets the resource limitation condition, the public resource/dedicated resource is set to be in a forbidden access state; and if the public resource/private resource state information does not meet the resource limitation condition, the public resource/private resource is set to be in an access permission state. And if the public resource and the private resource are both in the access prohibition state, the initial part bandwidth is set to be in the access prohibition state. If the public resource is in the access prohibition state and the private resource is in the access permission state, the initial part of bandwidth can be set to the access prohibition state or the access permission state, and when the initial part of bandwidth permits access, the user equipment only performs service processing on the accessed private resource, such as performing actions of PDCCH monitoring and the like in the private CORESET; if the initial common resource is in the access prohibition state, and the non-initial common resource and/or the dedicated resource is in the access permission state, the initial part of bandwidth may be set to the access prohibition state or the access permission state, and when the initial part of bandwidth permits access, the ue only performs service processing on the accessed common resource, for example, performs actions such as PDCCH monitoring in the non-initial CORESET. The judgment of the uplink common resource of the initial part of the bandwidth is the same as the process. The downlink of the initial part bandwidth is mainly COREST resources, and the PRACH, the PUSCH and the PUSCH which are in the uplink can be considered separately or collectively. When the common configuration part in the initial BWP is not the initial CORESET, the judgment principle may be the same as the initial CORESET or different from the initial CORESET, and the limited result is presented to the user equipment separately. The base station generates the limited access information according to the limited result, that is, the access state of the initial part of the bandwidth, and informs the user equipment through broadcast or dedicated RRC signaling, and the IE format of the downlink initial part of the bandwidth limited access information may be, but is not limited to: the configuration of the following initial part of the bandwidth, such as initial CORESET, public CORESET, private CORESET and the like, is listed, and the access state of each resource is recorded respectively. Similarly, the initial partial bandwidth can be controlled in a limited way according to the user category and the access priority of the selected user equipment.

For example, the IE of the restricted access information may contain the following examples:

TABLE 11

coresetZeroBarred, commoncoretbred and dedicatedcoretbred represent the initial, common and proprietary CORESET, respectively. In addition, the IE of the restricted access information may contain the following examples:

TABLE 12

The CoresetZeroBarred, commoncoretbred, dedicatedcoretbred may also be subject to restricted control according to user type and access priority, as explained in the previous embodiments.

Optionally, the user equipment queries whether the initial part of bandwidth is restricted for access, sends a query instruction of restricted access information of the initial part of bandwidth to the base station through RRC signaling, and after receiving the query instruction, the base station determines an access state of the initial part of bandwidth. And after judging whether the target part of bandwidth allows the access of a new user, the base station generates target limited access information and feeds the information back to the user equipment.

In step 102, the restricted access information is sent to the user equipment.

For example, 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 may re-evaluate whether each partial bandwidth allows accessing a new user periodically or according to the channel state information of each partial bandwidth reported by the user equipment. If the base station is judged regularly, when the timer is up, the latest limited access information of the partial bandwidth of the user equipment is notified again through broadcasting or RRC instruction; and if the access state judged by the base station according to the received channel state information of the partial bandwidth is different from the previous access state, the base station informs the user equipment of the latest limited access information of the partial bandwidth again through broadcasting or RRC instruction. The message may be all of the partial bandwidth, or a part of the partial bandwidth, or only limited access information of the changed partial bandwidth.

After receiving the limited access information retransmitted by the base station, the user equipment refreshes the stored limited access information of a part of bandwidth.

A partial bandwidth switching method, comprising: receiving limited access information sent by a base station; and determining the final target part bandwidth according to the limited access information, wherein the final target part bandwidth is in an access allowing state.

As shown in fig. 3, the specific flow of the partial bandwidth switching method may be as follows:

in step 201, restricted access information transmitted by a base station is received.

For example, the base station generates the limited access information of each partial bandwidth according to the access state of each partial bandwidth, and then sends the limited access information of each partial bandwidth to the user equipment through broadcasting or dedicated RRC signaling, and the user equipment receives the limited access information of each partial bandwidth.

Optionally, before or during starting the partial bandwidth handover procedure, the user equipment first presets a target partial bandwidth, and then queries the limited access information of the partial bandwidth from the base station through an RRC signaling. And after judging the access state of the part of the bandwidth, the base station 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 be accessed, continuing the switching process and switching to the part of the bandwidth; if the preset target part bandwidth is forbidden to be accessed, the switching process is stopped, or a target part bandwidth is reselected, and the process of inquiring the limited access information is initiated again. Or the user equipment firstly inquires the limited access information of each part of bandwidth, then determines the final target part of bandwidth according to the feedback information of the base station and initiates a switching process to the final target part of bandwidth.

Optionally, when the base station performs access control only on the initial partial bandwidth, the base station generates initial restricted access information and sends the initial restricted access information to the user equipment, where the initial restricted access information received by the user equipment includes public resource restricted access information and private resource restricted access information, and determines whether the initial partial bandwidth can be accessed according to the initial restricted access information.

Optionally, the user equipment queries the limited access information of the initial part of bandwidth as needed, for example, initiates a query before or during initiating a process of actively switching to the initial part of bandwidth, and then receives the initial limited access information fed back by the base station, and determines whether the initial part of bandwidth can be accessed.

In step 202, a final target portion bandwidth is determined according to the restricted access information, and the final target portion bandwidth is in an allowed access state.

For example, after receiving the limited access information, the user equipment determines a final target portion bandwidth, which is allowed to be accessed.

Optionally, after receiving the limited access information, the user equipment determines whether a preset target portion bandwidth is limited, and if the target portion bandwidth is in an allowed access state, the target portion bandwidth is a final target portion bandwidth; and if the target part bandwidth is in the access prohibition state, resetting a target part bandwidth.

Optionally, if the user equipment first queries the limited access information of the preset target portion bandwidth, after receiving the access state of the target portion bandwidth fed back by the base station, if the access state is allowed, the target portion bandwidth is determined as the final target portion bandwidth, and if the access state is forbidden, the user equipment resets a target portion bandwidth again or stops the actively initiated handover process.

When only the initial part of bandwidth is subjected to access control, whether public resources and private resources in the initial part of bandwidth are allowed to be accessed or not is respectively judged, the base station generates initial limited access information according to the judgment result and sends the initial limited access information to the user equipment, and the user equipment determines whether the initial part of bandwidth is allowed to be accessed or not in a switching process or before the switching process. The user equipment stops the switching process if the public resource and the special resource are prohibited to be accessed according to the received initial limited access information; if the public resource is forbidden to be accessed, the private resource is allowed to be accessed, and after the initial part of bandwidth is allowed to be accessed, the business processing is only carried out in the private resource allowed to be accessed; if the initial public resource forbids the access, the non-initial public resource and/or the exclusive resource allow the access, and after the access to the initial part of bandwidth is allowed, the service processing is only carried out in the public resource which allows the access.

Referring to fig. 4, fig. 4 is a flowchart of a partial bandwidth handover method according to an embodiment of the present invention, as shown in fig. 4, a base station determines whether each partial bandwidth allows a new user to access, generates restricted access information of each partial bandwidth, sends the restricted access information to a user equipment, and the user equipment initiates an active handover procedure, and determines a target partial bandwidth according to an access state of each partial bandwidth or stops the handover procedure. Referring to fig. 5, fig. 5 is a flowchart of another partial bandwidth switching method according to an embodiment of the present invention, as shown in fig. 5, a user equipment queries whether each partial bandwidth is restricted for access, sends a query instruction of restricted access information of the partial bandwidth to a base station through an RRC signaling, and after receiving the query instruction, the base station determines whether each partial bandwidth allows access to a new user. And judging whether the new user is allowed to switch in each part of bandwidth configured by the user equipment according to the channel state of the part of bandwidth fed back by each user in the cell, and sending the information to the user equipment through RRC signaling. The user equipment initiates an active switching process, and determines the bandwidth of a target part or stops the switching process according to the limited access information of each part of the bandwidth.

Fig. 6 is a diagram of an exemplary wireless communication system 700 for implementing the disclosed methods in accordance with an embodiment of the present invention. The embodiments described herein may be implemented using any suitably configured hardware and/or software. Fig. 6 illustrates a system 700 comprising a radio frequency circuit 710, a baseband circuit 720, a processor 730, a memory/storage device 740, a sensor 770, and an input/output (I/O) interface 780, as shown connected to each other.

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 general-purpose processors and special-purpose processors, such as a graphics processor and an application processor. The processor may be coupled to memory/storage 740 and configured to execute instructions stored in memory/storage 740 to enable various applications and/or operating systems to run 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 baseband (baseband) circuitry and Radio Frequency (RF) circuitry. The baseband circuitry may handle various radio control functions and communicate with one or more radio networks through the radio frequency circuitry. The radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency conversion, and the like. In some embodiments, the baseband circuitry may provide communications compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry may support NR, Evolved Universal Terrestrial Radio Access Network (EUTRAN), and/or other Wireless Metropolitan Area Networks (WMAN), Wireless Local Area Networks (WLAN), Wireless Personal Area Networks (WPAN). An embodiment in which the baseband circuitry is configured to support radio communications of multiple wireless protocols may be referred to as multi-mode baseband circuitry. In various embodiments, the baseband circuitry may include circuitry for operating on signals that are not strictly considered baseband frequencies. For example, in some embodiments, baseband circuitry may include circuitry to operate in signals having intermediate frequencies (i.e., baseband and radio frequencies).

The radio frequency circuit may communicate with a wireless network using modulated electromagnetic radiation through a non-solid medium. In various embodiments, the RF circuitry may include switches, filters, amplifiers, etc. for communication with the wireless network. In various embodiments, the RF circuitry may include circuitry for operating with signals that are not strictly considered to be in radio frequencies. For example, in some embodiments, the RF circuitry may include circuitry for operating with signals having an intermediate frequency between a baseband frequency and a radio frequency.

As used herein, "circuitry" may refer to, participate in, or include Application Specific Integrated Circuits (ASICs), electronic circuitry, processors (shared, dedicated chips or chipsets), and/or the execution of one or more software or firmware programs, combinational logic circuits, and/or other suitable hardware components that provide the described functionality. In some embodiments, the circuitry of the electronic device or the functionality associated with the circuitry may be implemented in one or more software or firmware modules. In some embodiments, some or all of the baseband circuitry, application circuitry, and/or components of memory/storage 740 may be implemented together on a system on a chip (SOC).

Memory/storage 740 may be used to load and store data and/or instructions, for example, for the described system. In one embodiment, the memory/storage may include any combination of suitable volatile memory, such as Dynamic Random Access Memory (DRAM), and/or non-volatile memory, such as flash memory. In various embodiments, the I/O interface 780 may include one or more user interfaces for enabling user interaction with the system and/or a peripheral component interface for enabling peripheral component interaction with the system. The user interface may include, but is not limited to, a physical keyboard or keypad, a touchpad, a speaker, a microphone, and the like. The peripheral component interfaces may include, but are not limited to, non-volatile memory ports, Universal Serial Bus (USB) ports, audio jacks, power interfaces, and the like.

In various embodiments, the sensor 770 may include one or more sensing devices to determine environmental conditions and/or location information associated with the system. In some embodiments, the sensors may include, but are 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 part of, or interact with, baseband circuitry and/or radio frequency circuitry to communicate with components of a positioning network, such as Global Positioning System (GPS) satellites. In various embodiments, system 700 may be a mobile computing device such as, but not limited to, a notebook computing device, a tablet computing device, a netbook (netbook), an ultra notebook (ultrabook), a smartphone, and the like. In various embodiments, the system may have more or fewer components, and/or different architectures. Where appropriate, the methods described herein may be implemented as a computer program. The computer program may be stored in a storage medium, such as a non-transitory storage medium.

Embodiments of the present disclosure are such that a combination of techniques/procedures in the 3GPP specifications may be employed to create the end product.

It will be understood by those of ordinary skill in the art that each of the units, algorithms, and steps described and disclosed in the embodiments of the present disclosure can be implemented using electronic hardware or a combination of software and computer hardware. Whether these functions are run in hardware or software depends on the application conditions and design requirements of the solution. Skilled artisans may implement the functionality in varying ways for each particular application, and such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure. It will be appreciated by those skilled in the art that, since the operation of the above-described systems, devices and units is substantially the same, reference may be made to the operation of the systems, devices and units in the above-described embodiments. For ease of description and simplicity, these operations will not be described in detail herein.

It is understood that the disclosed systems, devices, and methods may be implemented in other ways as well in embodiments of the invention. The above embodiments are merely exemplary. The division of cells is only based on the division of logical functions, while other divisions exist in the implementation. It is possible to combine or integrate a plurality of units or components in another system. It is also possible to omit or skip certain features. On the other hand, the mutual coupling, direct coupling, communicative coupling, and the like shown or discussed are operated indirectly or communicatively through some port, device, or unit by electrical, mechanical, or other kind of means.

The units as separate parts are or are not physically separate units. These elements may or may not be physical elements, i.e. located in one place or distributed over a plurality of network elements, which may or may not be physical elements. For purposes of embodiments of the present invention, some or all of the cells are used. In addition, each functional unit in this embodiment may be integrated in one processing unit, may also be physically independent, or may be two or more units integrated in one processing unit.

If the software functional unit is implemented and used and sold as a product, it may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions proposed by the technical solutions of the present disclosure can be implemented in the form of software products in nature or in part. Alternatively, a part of the technical solution advantageous to the conventional technology may be implemented as a software product. A software product in a computer is stored in a storage medium and includes instructions for a computing device (e.g., a personal computer, server, or network device) to perform all or part of the steps disclosed in the aspects of the present disclosure. The storage medium includes a USB disk (USB disk), a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a floppy disk, or other medium capable of storing program codes.

The method and the apparatus for partial bandwidth switching provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the description to explain the principle and the embodiment of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A method for fractional bandwidth switching, comprising:

the base station determines the access state of partial bandwidth and generates limited access information according to the access state; and

and sending the limited access information to the user equipment.

2. The method of claim 1, wherein the determining the access status of the partial bandwidth comprises:

3. The method of claim 2, wherein the determining the access status of the partial bandwidth comprises:

obtaining the classification of the user equipment, wherein the partial bandwidth is a partial bandwidth corresponding to the user equipment of a preset classification; and

the classification comprises at least a user class or an access priority, wherein the access priority comprises at least an access identity or an access class of the user equipment.

4. The method of claim 3, wherein the determining the access status of the partial bandwidth comprises:

5. The method of claim 1, wherein the determining the access status of the partial bandwidth comprises:

acquiring channel state information of the partial bandwidth;

judging that the channel state information meets a preset access prohibition condition, and setting the partial bandwidth as the access prohibition state; and

6. The method of claim 5, wherein the determining that the channel state information satisfies a predetermined barring condition and the partial bandwidth is set to the barring state comprises:

the channel state information includes a combination of at least one or more of the following: the method comprises the following steps of accessing the user number, the signal to noise ratio, the user number in a wireless resource control connection state, the bottom noise, the channel quality indication, the reference signal receiving quality and the reference signal receiving power; and

7. The method of claim 1, wherein the determining the access status of the partial bandwidth comprises:

acquiring resource state information of an initial part of bandwidth;

judging that the resource state information does not meet the resource limited condition, and setting the resource to be in the access-allowed state; and

the resources include public resources and proprietary resources.

8. The method of claim 7, wherein the determining the access status of the partial bandwidth comprises:

9. The method of claim 7, wherein the determining that the resource status information satisfies a predetermined resource limitation condition and the resource is set to the no access state comprises:

10. The method of claim 7, wherein the determining that the resource status information does not satisfy the resource restriction condition and the resource is set to the allowed access state comprises:

11. The method of claim 7, wherein the determining that the resource status information does not satisfy the resource restriction condition and the resource is set to the allowed access state comprises:

when the initial public resource is in the access prohibition state, and the non-initial public resource and/or the dedicated resource is in the access permission state, the initial partial bandwidth is set to be in the access permission state, and the service of the user equipment is processed on the non-initial public resource.

12. A method for fractional bandwidth switching, comprising:

user equipment receives limited access information sent by a base station; and

and determining the final target part bandwidth according to the limited access information, wherein the final target part bandwidth is in an access allowing state.

13. The method of claim 12, wherein the receiving restricted access information sent by the base station comprises:

and the user equipment sends a query instruction of the limited access information to the base station, wherein the query instruction is used for querying the limited access information of a preset target part bandwidth of the user equipment.

14. The method of claim 13, wherein the determining a final target fractional bandwidth according to the restricted access information comprises:

when the preset target part bandwidth is in an access-allowed state, the preset target part bandwidth is a final target part bandwidth; and

and when the preset target part bandwidth is in an access prohibition state, resetting the target part bandwidth.

15. The method of claim 13, wherein the receiving the restricted access information sent by the base station comprises:

and the user equipment sends a query instruction of target limited access information to the base station, wherein the target limited access information is limited access information corresponding to the preset target part bandwidth, and the query instruction is Radio Resource Control (RRC) signaling.

16. The method of claim 12, wherein the receiving the restricted access information sent by the base station comprises:

and the user equipment receives initial limited access information sent by the base station, wherein the initial limited access information comprises public resource limited access information and special resource limited access information.

17. The method of claim 16, wherein the receiving the restricted access information sent by the base station comprises:

and the user equipment sends a query instruction of the initial limited access information to the base station, wherein the initial limited access information is limited access information corresponding to the initial part bandwidth.

18. The partial bandwidth switching method according to claim 16, wherein the partial bandwidth switching method comprises:

and the public resource and the special resource are in an access prohibition state, and the switching process of accessing the user equipment to the final target part bandwidth is stopped.

19. The partial bandwidth switching method according to claim 16, wherein the partial bandwidth switching method comprises:

the public resource and the special resource are in an access prohibition state, the switching process of accessing the user equipment to the final target part bandwidth is stopped, and the user equipment sends another query instruction to the base station for querying the limited access information of another preset target part bandwidth of the user equipment.

20. The partial bandwidth switching method according to claim 16, wherein the partial bandwidth switching method comprises:

when the public resource is in the access prohibition state and the special resource is in the access permission state, processing the service of the user equipment on the special resource.

21. The partial bandwidth switching method according to claim 16, wherein the partial bandwidth switching method comprises:

processing traffic of the user equipment on the non-initial common resource when the initial common resource is in the access-barred state and the non-initial common resource and/or the dedicated resource is in the access-allowed state.

22. The method of claim 12, wherein the restricted access information defines each of the plurality of partial bandwidths as an allowed access state or a forbidden access state.

23. The partial bandwidth switching method of claim 12, wherein the restricted access information defines an allowed access state or a forbidden access state associated with the final target partial bandwidth for each of a plurality of user equipment categories.

24. The partial bandwidth switching method of claim 12, wherein the restricted access information defines an allowed access state or a forbidden access state of each access priority level of a plurality of user equipment access priority levels associated with the final target partial bandwidth, wherein the access priority levels at least include an access identity or an access category of the user equipment.

25. The method of claim 12, wherein the restricted access information sent by the base station is Radio Resource Control (RRC) signaling or system information.

26. The method of claim 12, wherein before or during an active handover procedure to an initial partial bandwidth, the ue sends an inquiry command of the restricted access information to the base station, where the inquiry command is used to inquire the restricted access information of a preset target partial bandwidth of the ue.

27. A computer-readable storage medium storing a computer program causing a computer to perform the method of any one of claims 1 to 11.

28. A computer readable storage medium storing a computer program causing a computer to perform the method of any one of claims 12 to 26.

29. A user device, comprising:

a transceiver; and

a processor coupled to the transceiver and configured to perform the steps comprising:

user equipment receives limited access information sent by a base station; and

30. The user equipment as claimed in claim 29, wherein the processor further performs the following steps before receiving the restricted access information sent by the base station, including:

31. The user device of claim 30, wherein the processor further performs the steps comprising:

32. The user device of claim 30, wherein the processor further performs the steps comprising:

33. The user device of claim 29, wherein the processor further performs the steps comprising:

34. The user device of claim 33, wherein the processor further performs the steps comprising:

35. The user device of claim 33, wherein the processor further performs the steps comprising:

36. The user device of claim 33, wherein the processor further performs the steps comprising:

37. The user device of claim 33, wherein the processor further performs the steps comprising:

38. The user device of claim 33, wherein the processor further performs the steps comprising:

39. The user equipment as recited in claim 29 wherein the restricted access information defines each of the plurality of fractional bandwidths as being in an allowed access state or a forbidden access state.

40. The user equipment of claim 29, wherein the restricted access information defines an allowed access state or a forbidden access state for each of a plurality of user equipment categories associated with the final target portion of bandwidth.

41. The user equipment of claim 29, wherein the restricted access information defines an allowed access state or a forbidden access state for each of a plurality of user equipment access priorities associated with the final target portion of bandwidth, wherein the access priorities include at least an access identity or an access category of the user equipment.

42. The ue of claim 29, wherein the restricted access information sent by the base station is Radio Resource Control (RRC) signaling or system information.

43. The ue of claim 29, wherein before or during initiating the active handover procedure to the initial partial bandwidth, the ue sends an inquiry command of the restricted access information to the base station, where the inquiry command is used to inquire the restricted access information of a preset target partial bandwidth of the ue.

44. A base station, comprising:

a transceiver; and

and sending the limited access information to the user equipment.

45. The base station of claim 44, wherein the processor further performs the steps comprising:

46. The base station of claim 45, wherein the processor further performs the steps comprising:

47. The base station of claim 46, wherein the processor further performs the steps comprising:

48. The base station of claim 44, wherein the processor further performs the steps comprising:

acquiring channel state information of the partial bandwidth;

49. The base station of claim 48, wherein the processor further performs the steps comprising:

50. The base station of claim 44, wherein the processor further performs the steps comprising:

acquiring resource state information of an initial part of bandwidth;

the resources include public resources and proprietary resources.

51. The base station of claim 50, wherein the processor further performs the steps comprising:

52. The base station of claim 50, wherein the processor further performs the steps comprising:

53. The base station of claim 50, wherein the processor further performs the steps comprising:

54. The base station of claim 50, wherein the processor further performs the steps comprising: