CN113348712A

CN113348712A - MIMO layer number self-adaptive adjusting method and related product

Info

Publication number: CN113348712A
Application number: CN201980090297.6A
Authority: CN
Inventors: 石聪; 胡荣贻; 徐伟杰; 陈文洪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2021-09-03
Anticipated expiration: 2039-07-26
Also published as: WO2021016768A1; CN113348712B

Abstract

The embodiment of the invention discloses a MIMO layer number self-adaptive adjusting method and a related product, wherein the method is applied to User Equipment (UE), and comprises the following steps: the UE receives a first maximum MIMO layer number configuration of a first bandwidth part BWP issued by the network equipment and a second maximum MIMO layer number configuration of a current cell; and the UE determines the maximum MIMO layer number of the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration. The embodiment of the invention has the advantage of adaptively adjusting the maximum MIMO layer number.

Description

MIMO layer number self-adaptive adjusting method and related product

Technical Field

The invention relates to the technical field of communication, in particular to a MIMO layer number self-adaptive adjusting method and a related product.

Background

The MIMO (english: multiple-input multiple-output, chinese: multiple-input multiple-output) technology refers to that a plurality of transmitting antennas and receiving antennas are used at a transmitting end and a receiving end, respectively, so that signals are transmitted and received through the plurality of antennas of the transmitting end and the receiving end, thereby improving communication quality. The multi-antenna multi-transmission multi-receiving system can fully utilize space resources, realizes multi-transmission and multi-reception through a plurality of antennas, can improve the system channel capacity by times under the condition of not increasing frequency spectrum resources and antenna transmitting power, and shows obvious advantages.

Disclosure of Invention

The embodiment of the invention provides a multi-antenna technology MIMO layer number self-adaptive adjusting method and a related product, aiming at carrying out self-adaptive adjustment on a maximum MIMO layer.

In a first aspect, an embodiment of the present invention provides a method for adaptively adjusting MIMO layer numbers, where the method is applied to a user equipment UE, and the method includes:

the UE receives a first maximum MIMO layer number configuration of a first bandwidth part BWP issued by the network equipment and a second maximum MIMO layer number configuration of a current cell;

and the UE determines the maximum MIMO layer number of the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration.

In a second aspect, an embodiment of the present invention provides a method for adaptively adjusting a number of MIMO layers, where the method is applied to a network device, and the method includes:

the method comprises the steps that network equipment sends first maximum MIMO layer number configuration of a first bandwidth part BWP and second maximum MIMO layer number configuration of a current cell to UE, and the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration are used for the UE to determine the maximum MIMO layer number of the first BWP.

In a third aspect, an embodiment of the present invention provides a user equipment, where the user equipment includes: a processing unit and a communication unit, wherein,

the processing unit is configured to control the communication unit to receive a multi-antenna first maximum MIMO layer number configuration of a first bandwidth portion BWP issued by a network device and a second maximum MIMO layer number configuration of a current cell; and determining the maximum MIMO layer number for the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration.

In a fourth aspect, an embodiment of the present invention provides a network device, where the network device includes: a communication unit and a processing unit;

a processing unit, configured to control the communication unit to send, to a UE, a first maximum MIMO layer number configuration of a first bandwidth portion BWP and a second maximum MIMO layer number configuration of a current cell, where the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration are used by the UE to determine a maximum MIMO layer number of the first BWP.

In a fifth aspect, an embodiment of the present invention provides a user equipment, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing the steps in any of the methods of the first aspect of the present invention.

In a sixth aspect, an embodiment of the present invention provides a network device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing the steps in any of the methods of the second aspect of the present invention.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform some or all of the steps described in the method according to any one of the first aspect or the second aspect of the embodiments of the present invention.

In an eighth aspect, the present invention provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operable to cause a computer to perform some or all of the steps as described in any of the methods of the first or second aspects of the embodiments of the present invention. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the present invention, the UE can receive max of BWP #1 sent by the network device in the embodiment of the present invention₁MIMO and max of the current cell₂At this time, the UE may determine the maximum MIMO layer number of BWP #1 according to the actual situation, so that the embodiment of the present application may implement adaptive adjustment of the maximum MIMO layer number based on BWP, thereby achieving the advantage of power saving for the UE.

Drawings

Reference will now be made in brief to the drawings that are needed in describing embodiments or prior art.

FIG. 1a is an exemplary diagram of a network topology provided by an embodiment of the present invention;

FIG. 1b is an exemplary diagram of another network topology provided by embodiments of the present invention;

fig. 2 is a schematic flowchart of a method for adaptively adjusting the number of MIMO layers according to an embodiment of the present invention;

fig. 3a is a schematic flowchart of a method for adaptively adjusting the number of MIMO layers according to an embodiment of the present invention;

fig. 3b is a schematic flowchart of a method for adaptively adjusting the number of MIMO layers according to an embodiment of the present invention;

fig. 3c is a schematic flowchart of a method for adaptively adjusting the number of MIMO layers according to an embodiment of the present invention;

fig. 3d is a schematic flowchart of a method for adaptively adjusting the number of MIMO layers according to an embodiment of the present invention;

fig. 3e is a schematic flowchart of a method for adaptively adjusting the number of MIMO layers according to an embodiment of the present invention;

fig. 4a is a schematic flowchart of a method for adaptively adjusting the number of MIMO layers according to an embodiment of the present invention;

fig. 4b is a schematic flowchart of a method for adaptively adjusting the number of MIMO layers according to an embodiment of the present invention;

fig. 5 is a schematic hardware structure diagram of a user equipment according to an embodiment of the present invention;

fig. 6 is a schematic hardware structure diagram of a network device according to an embodiment of the present invention;

fig. 7 is a block diagram illustrating functional units of a ue according to an embodiment of the present invention;

fig. 8 is a block diagram illustrating functional units of a network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings.

BWP (english: bandwidth part, chinese: operating bandwidth) is defined as a combination of a plurality of RBs (english: resource block, chinese: resource block) that are continuous within one carrier. BWP also allows UE (user equipment) to better use large carrier bandwidth. For a large carrier bandwidth, such as 100MHz, the bandwidth needed by a UE is often limited, and if the UE is enabled to perform full-bandwidth detection and maintenance in real time, the energy consumption of the UE will pose a great challenge. The BWP is introduced to divide a part of bandwidth in the whole large carrier for UE to access and data transmission, and the UE only needs to perform corresponding operation in the part of bandwidth configured by the system (i.e. BWP).

A cell, also called a serving cell, refers to an area covered by one or a part of a base station (sector antenna) in a mobile communication system, in which a UE can reliably communicate with the base station through a radio channel. According to different properties of the base station, the base station can be divided into Pcell (Primary cell, Chinese) and Sccell (Secondary cell, Chinese).

The maximum MIMO layer number refers to the maximum allowed layer number of the UE when applying the MIMO technology, and currently, in the existing NR (new radio, chinese) standard of R15, the maximum MIMO layer number is configured based on a serving cell, and for a downlink PDSCH (physical downlink control channel, chinese) channel, the maximum MIMO layer number (maxMIMO-Layers) is configured in the IE of PDSCH-serving cellconfig, and the PDSCH-serving cellconfig is configured in serving cellconfig. However, the maximum MIMO layer number is configured based on the dimension of the serving cell, and for the serving cell, there may be multiple BWPs, and the existing technical solution is under the same serving cell, for example, under Pcell, the same maximum MIMO layer number is based on no matter which BWP is based on, which results in that the UE increases the energy consumption of the UE at some BWPs because the maximum layer number is too high.

In order to enable the UE to achieve the power saving effect, the network device needs to flexibly adjust the maximum MIMO layer number of the UE, that is, BWP-specific configuration needs to be supported based on the maximum MIMO layer number. I.e. the UE can configure different maximum MIMO layer numbers on different active BWPs.

Referring to fig. 1a, a schematic diagram of a network topology is shown in fig. 1a, where the network topology includes: the UE is connected with the Pcell through electromagnetic waves. Fig. 1b is a schematic diagram of another network topology, and as shown in fig. 1b, the network topology includes: the UE is respectively connected with the Pcell and the Scell.

Referring to fig. 2, fig. 2 is a method for adaptively adjusting MIMO layer numbers according to an embodiment of the present invention, applied to a network topology shown in fig. 1a or fig. 1b, where the method is shown in fig. 2 and includes:

step S200, the network equipment sends a first maximum MIMO layer number (max) of a first working bandwidth (BWP #1) to the UE₁MIMO) configuration and a second maximum MIMO layer number (max) of the current cell₂MIMO) configuration, the first maximum MIMO layer-number configuration and the second maximum MIMO layer-number configuration being used for the UE to determine a maximum MIMO layer-number for the first BWP.

The current cell may be a Pcell or a Scell.

Step S201, the UE receives a first maximum MIMO layer number (max) of a first working bandwidth (BWP #1) issued by a network device₁MIMO) configuration and a second maximum MIMO layer number (max) of the current cell₂MIMO) configuration.

The above-mentioned current cell max₂The MIMO configuration canOn the downlink data channel PDSCH, specifically, it may be configured in PDSCH-ServingCellConfig. For max₁MIMO may be configured in RRC (radio resource control, chinese) signaling. For example, for initial downlink BWP, it may be configured with IE PDSCH-Config located in IE BWP-downlinkdedicate, and BWP-downlinkdedicate located in ServingCellConfig.

Step S202, the UE determines the maximum MIMO layer number of the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration.

In a specific implementation, the UE depends on the max₁MIMO and max₂MIMO determines the maximum MIMO layer number for BWP # 1.

It can be seen that, in the embodiment of the present application, the UE can receive max of BWP #1 issued by the network device₁MIMO and max of the current cell₂At this time, the UE may determine the maximum MIMO layer number of BWP #1 according to the actual situation, so that the embodiment of the present application may implement adaptive adjustment of the maximum MIMO layer number based on BWP, thereby achieving the advantage of power saving for the UE.

In a possible example, the implementation method of step S202 may specifically include: the UE determines that the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number, where the first maximum MIMO layer number is the maximum MIMO layer number included in the first maximum MIMO layer number configuration, and the second maximum MIMO layer number is the maximum MIMO layer number included in the second maximum MIMO layer number configuration.

In a specific implementation, the UE determines the maximum MIMO layer number of BWP #1 as max₁MIMO or max₂MIMO。

In one possible example, the first BWP is: a currently active BWP; the currently active BWP includes any one of: initial BWP, default BWP, and normal BWP.

The BWP #1 may be specifically a currently activated BWP, and the currently activated BWP may be any BWP of the current cell, for example, the currently activated BWP may be an initial BWP, a default BWP or a normal BWP (non-initial BWP and non-default BWP).

In one possible example, the method may further include: if the first BWP is a common BWP, the UE acquires a switching instruction, and switches the first BWP to an initial BWP or defaulttBP according to the switching instruction; the UE determines whether the initial BWP or the default BWP has a third maximum MIMO layer-number configuration, and adjusts the maximum MIMO layer-number of the initial BWP or the default BWP to a third maximum MIMO layer-number if the initial BWP or the default BWP has the third maximum MIMO layer-number configuration, where the third maximum MIMO layer-number is the maximum MIMO layer-number included in the third maximum MIMO layer-number configuration.

In a specific implementation, if BWP #1 is a normal BWP (i.e. the BWP is not an initial BWP or a default BWP), the UE obtains a handover instruction, and switches BWP # l to the initial BWP or the default BWP according to the handover instruction; the UE determines whether the initial BWP or default BWP has the third maximum MIMO layer number configuration (corresponding to max)₃MIMO), if the initial BWP or default BWP has the third maximum MIMO layer-level configuration, determining that the maximum MIMO layer-level of the initial BWP or default BWP is adjusted to max₃MIMO。

In one possible example, the handover indication comprises any one of: DCI (english: downlink control information) indication, RRC indication, or BWP deactivation timer timeout.

For example, assuming that the current BWP is BWP #1 and the initial BWP is BWP #0, when the UE receives the DCI indication, it switches the currently active BWP from BWP #1 to BWP #0, and the UE determines whether BWP #0 has the third maximum MIMO layer-level configuration (corresponding to max)₃MIMO), if having the third maximum MIMO layer number configuration, the UE determines the maximum MIMO layer number of BWP #0 as max₃MIMO. The operation policy indicated by the DCI may be referred to as the operation policy indicated by the handover indication RRC or the BWP deactivation timer timeout.

In one possible example, the method further comprises: when the UE initiates RACH (English: random competitive access, Chinese: random competitive access) at the first BWP, the UE determines that the first BWP is not configured with PRACH (English: downlink random access channel) resources and the first BWP is a non-initial BWP, and the UE switches to the initial BWP.

If the initial BWP has a fourth maximum MIMO layer number configuration, the UE determines that the maximum MIMO layer number of the initial BWP is a fourth maximum MIMO layer number, where the fourth maximum MIMO layer number is the maximum MIMO layer number included in the fourth maximum MIMO layer number configuration;

if the initial BWP does not have the fourth maximum MIMO layer number configuration, the UE determines that the maximum MIMO layer number of the initial BWP is the second maximum MIMO layer number.

In a specific implementation, when the UE initiates the RACH in BWP #1, the UE determines that BWP #1 does not configure the PRACH and that BWP #1 is a non-initial BWP, and the UE switches to the initial BWP.

In one possible example, when the first BWP is an initial BWP or a default BWP, the UE determines whether the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number according to a set condition.

In a specific implementation, if BWP #1 is initia1BWP or default BWP, the UE may determine whether the maximum MIMO layer number of BWP #1 is max according to the setting condition₂MIMO。

In this possible example, the method further comprises: if the UE satisfies the setting condition, the UE determines that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number, and if the UE does not satisfy the setting condition, the UE determines that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number.

In a specific implementation, if the UE satisfies the setting condition, the UE determines that the maximum MIMO layer number of BWP #1 is max₂MIMO, if the UE does not satisfy the setting condition, the UE determines the maximum MIMO layer number of BWP #1 as max₁MIMO。

Wherein, the setting conditions may specifically be: the first BWP is not configured with the first maximum MIMO layer number, i.e., is not configured withSet the first maximum MIMO tier number (i.e., max) for BWP #₁MIMO)。

In one possible example, if BWP #1 is normal BWP, the UE may determine whether the maximum MIMO layer number of BWP #1 is max according to the setting condition₂MIMO。

Specifically, if the UE does not satisfy the setting condition, the UE determines the maximum MIMO layer number of BWP #1 as max₁MIMO; if the setting condition is satisfied, the UE determines the maximum MIMO layer number of BWP #1 as max₂MIMO。

In one possible example, the determining, by the UE, the maximum MIMO layer number for the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number includes: and the UE acquires an indication and determines that the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number according to the indication.

In a specific implementation, the UE obtains an indication sent by the network device, and determines the maximum MIMO layer number of BWP #1 as max according to the indication₁MIMO or max₂MIMO。

In this possible example, the UE obtaining the indication includes: and the UE sends auxiliary information to network equipment and receives the indication issued by the network equipment according to the auxiliary information.

The auxiliary information (english: association information) may specifically be: the assisting network determines whether the UE needs to configure the power saving mode or whether BWP based maximum MIMO layer number configuration needs to be used.

In one possible example, the indication comprises any one of: a mode switch indication and a BWP switch indication.

The indication may be a signaling sent by a network device, the application does not limit the specific form of the signaling, the signaling may carry an indication, the indication may be a bit of the signaling, and for example, when the bit is 1, it is determined that the maximum MIMO layer number of BWP #1 is max₂MIMO, determining maximum MIMO layer number of BWP #1 as max when the bit is 0₁MIMO, of course, in practical application, the bit is 0Determining the maximum MIMO layer number of BWP #1 as max₁MIMO, determining maximum MIMO layer number of BWP #1 as max when the bit is 1₂MIMO。

In this possible example, the indication may be determined according to the auxiliary information, and a specific implementation manner may be: the UE sends the auxiliary information to the network equipment, correspondingly, after the network equipment receives the auxiliary information of the UE, the network equipment generates an indication according to the auxiliary information, and the network equipment sends the indication to the UE.

In one possible example, the BWP handover indication may specifically include: DCI signaling or RRC signaling. The mode switching indication may include: an energy saving mode switching indication or a non-energy saving mode switching indication.

In one possible example, the determining, by the UE, that the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number specifically includes: if the UE is in the energy-saving mode, determining the maximum MIMO layer number of the first BWP as a first maximum MIMO layer number; and if the UE is in the non-energy-saving mode, determining the maximum MIMO layer number of the first BWP as a second maximum MIMO layer number.

In one possible example, the determining, by the UE, the maximum MIMO layer number of the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number according to the indication includes: if the DCI signaling or the RRC signaling includes a usage indication of a first maximum MIMO layer number or a usage indication of a second maximum MIMO layer number, determining the maximum MIMO layer number as a maximum layer number matching the usage indication.

In a specific implementation, the UE determines that the DCI signaling (which may also be RRC signaling) includes max₁MIMO usage indication or max₂The MIMO usage indication determines the maximum MIMO layer number of BWP #1 as the maximum layer number matching the usage indication.

For example, the DCI signaling includes max₁Determining the maximum MIMO layer number of BWP #1 as max₁MIMO. The DCI signaling includes max₂Determining the maximum MIMO layer number of BWP #1 as max₂MIMO。

In one possible example, the determining, by the UE, the maximum MIMO layer number for the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number includes: if the working mode of the UE is the energy saving mode, when the UE switches to the initial BWP or default BWP, determining the maximum MIMO layer number of the first BWP as the first maximum MIMO layer number; and if the working mode of the UE is the non-energy-saving mode, when the UE is switched to the initial BWP or default BWP, determining that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number.

In a specific implementation, if the operating mode of the UE is the energy saving mode, and the UE switches to the initial BWP or default BWP, it is determined that the maximum MIMO layer number of BWP #1 is max₁MIMO. If the working mode of the UE is the non-energy-saving mode, when the UE is switched to the initial BWP or default BWP, determining the maximum MIMO layer number of BWP #1 as max₂MIMO。

In one possible example, the determining, by the UE, the maximum MIMO layer number of the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number according to the indication includes: if the energy-saving mode switching indication or the non-energy-saving mode switching indication is that the energy-saving mode is switched to the non-energy-saving mode, the UE determines that the maximum MIMO layer number of the first BWP is a second maximum MIMO layer number; if the energy-saving mode switching indication or the non-energy-saving mode switching indication is that the non-energy-saving mode is switched to the energy-saving mode, the UE determines that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number.

In a specific implementation, if the energy-saving mode switching indication or the non-energy-saving mode switching indication is that the energy-saving mode is switched to the non-energy-saving mode, the maximum MIMO layer number of BWP #1 is determined to be max₂MIMO; if the energy-saving mode switching indication or the non-energy-saving mode switching indication is that the non-energy-saving mode is switched to the energy-saving mode, determining the maximum MIMO layer number of the BWP #1 as max₁MIMO。

In one possible example, the above-mentioned energy saving mode switching indication or non-energy saving mode switching indication may be carried in an RRC reconfiguration message.

In one possible example, the first maximum number of MIMO layersThe configuration is carried in an RRC reconfiguration message, i.e. max as described above₁MIMO may be carried in RRC reconfiguration messages.

Referring to fig. 3a, fig. 3a provides a MIMO layer number adaptive adjustment method, applied to a network topology as shown in fig. 1a or fig. 1b, where a current cell of a UE as shown in fig. 3a is Pcell, a currently activated BWP of the UE is BWP #1, and it is assumed that BWP #1 is initial BWP or default BWP, and the method is shown in fig. 3a and includes the following steps:

step S301a, the network device issues the MIMO max of BWP #1₁MIMO configuration and Pcell max₂A MIMO configuration;

step S302a, the UE receives the MIMO max of BWP #1₁MIMO configuration and Pcell max₂A MIMO configuration;

step S303a, the UE determines the maximum MIMO layer number of BWP #1 as max₁MIMO。

After receiving the configuration of the network device for the first maximum MIMO layer number of BWP #1, the UE of the embodiment of the application directly configures the maximum MIMO layer number of BWP #1 to the first maximum MIMO layer number configuration (i.e., determines that the maximum MIMO layer number is max)₁MIMO)。

Referring to fig. 3b, fig. 3b provides a MIMO layer number adaptive adjustment method, applied to a network topology as shown in fig. 1a or fig. 1b, where a current cell of a UE as shown in fig. 3b is Pcell, a currently activated BWP of the UE is BWP #0, and it is assumed that BWP #0 is initial BWP or default BWP, and the method is shown in fig. 3a and includes the following steps:

step S301b, the network device issues the MIMO max of BWP #1₁MIMO configuration and Pcell max₂A MIMO configuration;

step S302b, the UE receives the MIMO max of BWP #1₁MIMO configuration and Pcell max₂A MIMO configuration;

step S303b, the UE switches from BWP #1 to BWP #0, and determines the maximum MIMO layer number of BWP #0 as max₂MIMO。

The UE of the embodiment of the application receives the BWP #0 from the network device through the first timeA maximum MIMO layer number configuration, directly configuring the maximum MIMO layer number of BWP #0 as the maximum MIMO layer number of the current cell (i.e. determining the maximum MIMO layer number as max)₂MIMO)。

Referring to fig. 3c, fig. 3c provides a MIMO layer number adaptive adjustment method, applied to a network topology as shown in fig. 1a or fig. 1b, where a current cell of a UE as shown in fig. 3c is Pcell, a currently activated BWP of the UE is BWP #1, and it is assumed that BWP #0 is initial BWP or default BWP, BWP #1 is normal BWP (i.e., non-initial BWP or default BWP) and BWP #1 is currently activated BWP, and the method is shown in fig. 3c and includes the following steps:

step S301c, the network device issues MIMO max of BWP #0₁MIMO configuration and Pcell max₂A MIMO configuration;

step S302c, the UE receives the MIMO max of BWP #0₁MIMO configuration and Pcell max₂A MIMO configuration;

step S303c, the network device issues an indication (specifically, DCI indication or RRC indication) to the UE, where the indication includes: a handover indication;

step S304c, the UE receives the indication, switches BWP #1 to BWP #0 according to the indication, and determines the maximum MIMO layer number of BWP #0 as max₁MIMO。

The UE of the embodiment of the present application receives an indication issued by a network device after receiving a configuration of a first maximum MIMO layer number of the network device being BWP #1, switches to a corresponding BWP according to the indication, and determines that the maximum MIMO layer number is max according to the BWP₁MIMO。

Referring to fig. 3d, fig. 3d provides a MIMO layer number adaptive adjustment method, applied to a network topology as shown in fig. 1a or fig. 1b, where a current cell of a UE as shown in fig. 3d is Pcell, a currently activated BWP of the UE is BWP #1, and it is assumed that BWP #0 is initial BWP or default BWP, BWP #1 is normal BWP (i.e., non-initial BWP or default BWP) and BWP #1 is currently activated BWP, and the method is shown in fig. 3d and includes the following steps:

step S301d, the network device issues MIMO max of BWP #0₁MIMO is configured toAnd max of Pcell₂A MIMO configuration;

step S302d, the UE receives the MIMO max of BWP #0₁MIMO configuration and Pcell max₂A MIMO configuration;

step S303d, the UE starts a BWP timer, and switches BWP #1 to BWP #0 when the BWP timer expires;

step S304d, the UE determines the maximum MIMO layer number of BWP #0 as max₁MIMO。

The UE of the embodiment of the present application, after receiving the configuration of the first maximum MIMO layer number for BWP #1 from the network device, starts a timer and after the timer expires, switches the currently activated BWP #1 to the corresponding BWP #0, and determines that the maximum MIMO layer number is max according to the BWP #0₁MIMO。

Referring to fig. 3e, fig. 3e provides a MIMO layer number adaptive adjustment method, applied to a network topology as shown in fig. 1a or fig. 1b, where a current cell of a UE as shown in fig. 3e is Pcell, a currently activated BWP of the UE is BWP #1, and it is assumed that BWP #0 is initial BWP, BWP #1 is normal BWP (i.e., non-initial BWP or default BWP) and BWP #1 is currently activated BWP, and the method is shown in fig. 3e and includes the following steps:

step S301e, the network device issues MIMO max of BWP #0₁MIMO configuration and Pcell max₂A MIMO configuration;

step S302e, the UE receives the MIMO max of BWP #0₁MIMO configuration and Pcell max₂A MIMO configuration;

step S303e, UE initiates RACH at BWP #1, UE determines that BWP #1 is not configured with PRACH and BWP #1 is non-initial BWP, UE switches BWP #1 to BWP # 0;

step S304e, the UE determines the maximum MIMO layer number of BWP #0 as max₁MIMO。

It should be noted that, if BWP #0 of the UE does not have the first maximum MIMO layer number configuration, the UE determines the maximum MIMO layer number of BWP #0 as max₂MIMO。

After receiving the configuration of the first maximum MIMO layer number of BWP #0, the UE of the embodiment of the present application determines that the step is satisfiedAfter the switching condition of step S303e, switch the currently activated BWP #1 to the corresponding BWP #0, and determine the maximum MIMO layer number as max according to the BWP #0₁MIMO。

Referring to fig. 4a, fig. 4a provides a MIMO layer number adaptive adjustment method, applied to a network topology as shown in fig. 1a or fig. 1b, where a current cell of a UE as shown in fig. 4a is Pcell, a currently activated BWP of the UE is BWP #1, and it is assumed that BWP #1 is initial BWP or default BWP, and the method is shown in fig. 4a and includes the following steps:

step S401a, the network device issues the MIMO max of BWP #1₁MIMO configuration and Pcell max₂A MIMO configuration;

step S402a, the UE receives the MIMO max of BWP #1₁MIMO configuration and Pcell max₂A MIMO configuration;

step S403a, the network device sends an indication (the indication may be a handover indication, such as a DCI indication or an RRC indication) to the UE, where the indication includes a use indication of the maximum MIMO layer number configuration (here, it is assumed to use max)₁An indication of a MIMO configuration);

the instruction in step S403a may be another instruction, such as a mode switching instruction.

Step S404a, the UE determines the maximum MIMO layer number of BWP #1 as max according to the indication₁MIMO。

After receiving the indication from the network device after configuring the network device for the first maximum MIMO layer number of BWP #1, the UE in the embodiment of the present application directly configures the maximum MIMO layer number of BWP #1 to the first maximum MIMO layer number configuration according to the indication (i.e. determines that the maximum MIMO layer number is max)₁MIMO)。

In an optional example, before step S403a, the method may further include:

step S402A, the UE sends assistance information to the network device, where the assistance information is used to assist the network to determine whether the UE needs to configure the energy saving mode or whether BWP-based maximum MIMO layer number configuration needs to be used.

Referring to fig. 4b, fig. 4b provides a MIMO layer number adaptive adjustment method, applied to a network topology as shown in fig. 1a or fig. 1b, where a current cell of a UE as shown in fig. 4b is Pcell, a currently activated BWP of the UE is BWP #1, and it is assumed that BWP #1 is BWP in non-energy saving mode, BWP #0 is initiai BWP, and BWP #0 is BWP in energy saving mode, where the method is shown in fig. 4b, and the method includes the following steps:

step S401b, the network device issues the MIMO max of BWP #0₁MIMO configuration and Pcell max₂A MIMO configuration;

step S402b, the UE receives the MIMO max of BWP #0₁MIMO configuration and Pcell max₂A MIMO configuration;

step S403b, the network device sends an instruction to the UE (the instruction may be mode switched);

in step S404b, the UE switches BWP #1 to BWP #0 (i.e., switches from the non-power saving mode to the power saving mode) according to the instruction, and determines that the maximum MIMO layer number of BWP #0 is max1 MIMO.

The UE of the embodiment of the present application, after receiving the first maximum MIMO layer number configuration of BWP #0 of the network device, and receiving the mode switching instruction of the network device, switches BWP #1 to BWP #0, and determines that the maximum MIMO layer number of BWP #0 is configured to the first maximum MIMO layer number configuration (i.e., determines that the maximum MIMO layer number is max)₁MIMO)。

Referring to fig. 5 in accordance with the embodiment shown in fig. 2, fig. 5 is a schematic structural diagram of a user equipment 500 according to an embodiment of the present invention, and as shown in the figure, the user equipment 300 includes a processor 310, a memory 320, a communication interface 330, and one or more programs 321, where the one or more programs 321 are stored in the memory 320 and configured to be executed by the processor 310, and the one or more programs 321 include instructions for performing the following steps;

receiving a first maximum MIMO layer number configuration of a first bandwidth part BWP issued by a network device and a second maximum MIMO layer number configuration of a current cell; determining the maximum MIMO layer number of the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration.

In an optional example, in the determining the maximum MIMO layer-number for the first BWP according to the first maximum MIMO layer-number configuration and the second maximum MIMO layer-number configuration, the instructions in the program are specifically configured to: determining the maximum MIMO layer number of the first BWP as a first maximum MIMO layer number or a second maximum MIMO layer number, where the third maximum MIMO layer number is a maximum MIMO layer number included in the third maximum MIMO layer number configuration.

In an alternative example, the first BWP is: a currently active BWP;

the currently active BWP includes any one of: initial BWP, default BWP, and normal BWP.

In an alternative example, the program further includes instructions for: if the first BWP is non-initial BWP or non-default BWP, acquiring a switching instruction, and switching the first BWP to initial BWP or default BWWP according to the switching instruction; and determining whether the initial BWP or the default BWP has a third maximum MIMO layer-number configuration, if the initial BWP or the default BWP has the third maximum MIMO layer-number configuration, adjusting the maximum MIMO layer-number of the initial BWP or the default BWP to a third maximum MIMO layer-number, where the third maximum MIMO layer-number is the maximum layer-number included in the third maximum MIMO layer-number configuration.

In an alternative example, the handover indication comprises any one of: downlink control information DCI indication, radio resource control RRC indication, and BWP deactivation timer timeout.

In an alternative example, the program further includes instructions for: when the first BWP initiates a random access channel RACH, determining that the first BWP is not configured with a downlink random access channel PRACH resource and the first BWP is a non-initial BWP, and switching the UE to the initial BWP.

In an alternative example, the program further includes instructions for: and if the first BWP is an initial BWP or a default BWP, determining whether the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number according to a set condition.

In an alternative example, the program further includes instructions for: determining the maximum MIMO layer number of the first BWP as a second maximum MIMO layer number if the UE satisfies the setting condition, and determining the maximum MIMO layer number of the first BWP as the first maximum MIMO layer number if the UE does not satisfy the setting condition;

the setting conditions are as follows: the first BWP does not configure a first maximum MIMO layer number for the first BWP.

In an optional example, in the determining that the maximum MIMO layer number for the first BWP is the first maximum MIMO layer number or the second maximum MIMO layer number, the instructions in the program are specifically configured to: and acquiring an indication, and determining the maximum MIMO layer number of the first BWP as a first maximum MIMO layer number or a second maximum MIMO layer number according to the indication.

In an alternative example, in terms of obtaining the indication, the instructions in the program are specifically configured to: and sending auxiliary information to network equipment, and receiving the indication issued by the network equipment according to the auxiliary information.

In an alternative example, the indication comprises any one of: a mode switch indication and a BWP switch indication.

In an optional example, the BWP handover indication comprises: DCI signaling or RRC signaling.

In one optional example, the mode switch indication comprises: an energy saving mode switching indication or a non-energy saving mode switching indication.

In an optional example, in the determining, according to the indication, that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number or the second maximum MIMO layer number, the instructions in the program are specifically configured to: if the DCI signaling or the RRC signaling includes a usage indication of a first maximum MIMO layer number or a usage indication of a second maximum MIMO layer number, determining the maximum MIMO layer number as a maximum layer number matching the usage indication.

In an optional example, in the determining that the maximum MIMO layer number for the first BWP is the first maximum MIMO layer number or the second maximum MIMO layer number, the instructions in the program are specifically configured to: if the working mode of the UE is the energy saving mode, when switching to the initial BWP or default BWP, determining the maximum MIMO layer number of the first BWP as the first maximum MIMO layer number; and if the working mode of the UE is the non-energy-saving mode, when the UE is switched to the initial BWP or default BWP, determining that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number.

In an optional example, in the determining, according to the indication, that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number or the second maximum MIMO layer number, the instructions in the program are specifically configured to: if the energy-saving mode switching indication or non-energy-saving mode switching indication is that the energy-saving mode is switched to the non-energy-saving mode, determining the maximum MIMO layer number of the first BWP as the second maximum MIMO layer number; determining the maximum MIMO layer number of the first BWP as the first maximum MIMO layer number if the energy saving mode switching indication or the non-energy saving mode switching indication is to switch to the energy saving mode from the non-energy saving mode.

In an optional example, the energy saving mode switching indication or the non-energy saving mode switching indication is carried in an RRC reconfiguration message.

In an optional example, the first maximum MIMO layer number configuration is carried in an RRC reconfiguration message.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a network device 600 according to an embodiment of the present invention, and as shown in the figure, the network device 600 includes a processor 410, a memory 420, a communication interface 430, and one or more programs 421, where the one or more programs 421 are stored in the memory 420 and configured to be executed by the processor 410, and the one or more programs 421 include instructions for performing the following steps;

sending, to a UE, a first maximum MIMO layer number configuration of a first bandwidth part BWP and a second maximum MIMO layer number configuration of a current cell, where the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration are used for the UE to determine a maximum MIMO layer number of the first BWP.

In an alternative example, the program further includes instructions for: and sending a switching indication to the UE.

In an alternative example, the program further includes instructions for: receiving auxiliary information sent by UE;

the processor 410, the program further comprising instructions for: and determining an indication according to the auxiliary information, and sending the indication to the UE.

In an alternative example, the indication is any one of: a mode switch indication and a BWP switch indication;

the BWP handover indication comprises: downlink control information DCI signaling or radio resource control RRC signaling.

In case of integrated units, fig. 7 shows a block diagram of one possible functional unit composition of the UE involved in the above embodiments. The UE700 is applied to a terminal device, and specifically includes: a processing unit 702 and a communication unit 703. The processing unit 702 is configured to control and manage actions of the terminal device, e.g., the processing unit 702 is configured to support the terminal device to perform steps 200, 202 in fig. 2 and/or other processes for the techniques described herein. The communication unit 703 is used to support communication between the terminal device and other devices. The terminal device may further include a storage unit 701 for storing program codes and data of the terminal device.

The Processing Unit 702 may be a Processor or a controller, such as a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 703 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 701 may be a memory. When the processing unit 702 is a processor, the communication unit 703 is a communication interface, and the storage unit 701 is a memory, the terminal device according to the embodiment of the present application may be the user equipment shown in fig. 7.

In a specific implementation, the processing unit 702 is configured to perform any step performed by the terminal device in the above method embodiment, and when data transmission such as sending is performed, the communication unit 703 is optionally invoked to complete a corresponding operation.

The details will be described below.

The communication unit 703 is configured to receive a multi-antenna first maximum MIMO layer number configuration of the first bandwidth portion BWP and a second maximum MIMO layer number configuration of the current cell, where the configuration is issued by the network device;

the processing unit 702 is configured to determine the maximum MIMO layer number of the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration.

In an optional example, in the aspect of determining the maximum MIMO layer number of the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration, the processing unit 702 is specifically configured to determine that the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number, and the third maximum MIMO layer number is a maximum MIMO layer number included in the third maximum MIMO layer number configuration.

In an alternative example, the first BWP is: a currently active BWP;

In an optional example, the processing unit 702 is specifically configured to, when the first BWP is a non-initial BWP or a non-default BWP, obtain a switching indication, and switch the first BWP to the initial BWP or the default BWP according to the switching indication; and determining whether the initial BWP or the default BWP has a third maximum MIMO layer-number configuration, if the initial BWP or the default BWP has the third maximum MIMO layer-number configuration, adjusting the maximum MIMO layer-number of the initial BWP or the default BWP to a third maximum MIMO layer-number, where the third maximum MIMO layer-number is the maximum MIMO layer-number included in the third maximum MIMO layer-number configuration.

In an optional example, the processing unit 702 is specifically configured to, when the first BWP initiates a random access channel RACH, determine that the first BWP does not configure a downlink random access channel PRACH resource and the first BWP is a non-initial BWP, and switch the UE to the initial BWP.

In an optional example, the processing unit 702 is specifically configured to determine, when the first BWP is an initial BWP or a default BWP, whether the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number according to a setting condition.

In an optional example, the processing unit 702 is specifically configured to determine, if the UE satisfies the set condition, that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number, and if the UE does not satisfy the set condition, determine that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number;

In an optional example, in the aspect of determining that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number or the second maximum MIMO layer number, the processing unit 702 is specifically configured to obtain an indication, and determine that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number or the second maximum MIMO layer number according to the indication.

In an optional example, in terms of obtaining the indication, the communication unit 703 is specifically configured to send auxiliary information to a network device, and receive the indication issued by the network device according to the auxiliary information.

In an optional example, in the aspect that the determining, according to the indication, the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number, the processing unit 702 is specifically configured to determine, as the DCI signaling or the RRC signaling includes a use indication of the first maximum MIMO layer number or a use indication of the second maximum MIMO layer number, the maximum MIMO layer number as a maximum layer number matching the use indication.

In an optional example, in the aspect of determining that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number or the second maximum MIMO layer number, the processing unit 702 is specifically configured to determine that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number when the UE switches to the initial BWP or the default BWP if the operating mode of the UE is the energy saving mode; and if the working mode of the UE is the non-energy-saving mode, when the UE is switched to the initial BWP or default BWP, determining that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number.

In an optional example, in the aspect of determining, according to the indication, that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number or the second maximum MIMO layer number, the processing unit 702 is specifically configured to determine, if the energy saving mode switching indication or the non-energy saving mode switching indication is switching from the energy saving mode to the non-energy saving mode, that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number; determining the maximum MIMO layer number of the first BWP as the first maximum MIMO layer number if the energy saving mode switching indication or the non-energy saving mode switching indication is to switch to the energy saving mode from the non-energy saving mode.

In the case of integrated units, fig. 8 shows a block diagram of one possible functional unit of the network device involved in the above-described embodiment. The network device 800 is applied to a network device including: a processing unit 802 and a communication unit 803. Processing unit 802 is used to control and manage the actions of the network device, e.g., processing unit 502 is used to support the network device to perform steps 200, 202 in fig. 2 and/or other processes for the techniques described herein. The communication unit 803 is used to support communication between the network device and other devices. The network device may further comprise a storage unit 801 for storing program codes and data of the terminal device.

The Processing Unit 802 may be a Processor or a controller, and may be, for example, a Central Processing Unit (CPU), a general purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 803 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 801 may be a memory. When the processing unit 802 is a processor, the communication unit 803 is a communication interface, and the storage unit 801 is a memory, the terminal device according to the embodiment of the present application may be a network device shown in fig. 4.

The processing unit 802 is configured to perform any step performed by the network device in the above method embodiments, and when performing data transmission such as receiving, the communication unit 803 is optionally invoked to complete the corresponding operation. The details will be described below.

The communication unit 803 is configured to send, to the UE, a first maximum MIMO layer number configuration of a first bandwidth portion BWP and a second maximum MIMO layer number configuration of a current cell, where the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration are used for the UE to determine a maximum MIMO layer number of the first BWP.

In an alternative example, the communication unit 803: and also for sending a handover indication to the UE.

In an alternative example, the communication unit 803: the UE is also used for receiving the auxiliary information sent by the UE;

in an alternative example, the communication unit 803: and is further configured to determine an indication according to the assistance information, and send the indication to the UE.

The above-mentioned embodiments of the present invention have been introduced mainly from the perspective of interaction between network elements. It is understood that the terminal includes corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The embodiment of the present invention may perform the division of the functional units for the terminal according to the method example described above, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

The Processor may be a Central Processing Unit (CPU), a general purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication interface may include a transceiver, transceiving circuitry, and the like.

The embodiment of the present invention further provides a chip, where the chip includes a processor, configured to call and run a computer program from a memory, so that a device in which the chip is installed performs part or all of the steps described in the MIMO layer number adaptive adjustment method in the above method embodiment.

Embodiments of the present invention further provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in the user equipment in the above method embodiments.

Embodiments of the present invention further provide a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in the network device in the above method embodiments.

Embodiments of the present invention also provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in the user equipment in the above method embodiments. The computer program product may be a software installation package.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium may reside as discrete components in an access network device, a target network device, or a core network device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functionality described in embodiments of the invention may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the embodiments of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention.

Claims

A method for adaptively adjusting the number of MIMO layers is characterized by comprising the following steps:

the UE receives a first maximum MIMO layer number configuration of a first bandwidth part BWP issued by network equipment and a second maximum MIMO layer number configuration of a current cell;

and the UE determines the maximum MIMO layer number of the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration.
The method of claim 1, wherein the determining, by the UE, the maximum MIMO layer number for the first BWP based on the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration comprises:

the UE determines that the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number, where the first maximum MIMO layer number is the maximum MIMO layer number included in the first maximum MIMO layer number configuration, and the second maximum MIMO layer number is the maximum MIMO layer number included in the second maximum MIMO layer number configuration.
Method according to claim 1 or 2, wherein the first BWP is: a currently active BWP;

the currently active BWP includes any one of: initial BWP, default BWP, and normal BWP.
The method according to any one of claims 1-3, further comprising:

if the first BWP is a common BWP, the UE acquires a switching instruction, and switches the first BWP to an initial BWP or defaulttBP according to the switching instruction;

the UE determines whether the initial BWP or the default BWP has a third maximum MIMO layer-number configuration, and adjusts the maximum MIMO layer-number of the initial BWP or the default BWP to a third maximum MIMO layer-number if the initial BWP or the default BWP has the third maximum MIMO layer-number configuration, where the third maximum MIMO layer-number is the maximum MIMO layer-number included in the third maximum MIMO layer-number configuration.
The method of claim 4, wherein the handover indication comprises any one of: downlink control information DCI indication, radio resource control RRC indication, and BWP deactivation timer timeout.
The method according to any one of claims 1-3, further comprising:

when the UE initiates a Random Access Channel (RACH) at the first BWP, the UE determines that the first BWP is not configured with a downlink random access channel (PRACH) resource and the first BWP is a non-initial BWP, and the UE is switched to the initial BWP;

if the initial BWP has a fourth maximum MIMO layer number configuration, the UE determines that the maximum MIMO layer number of the initial BWP is a fourth maximum MIMO layer number, where the fourth maximum MIMO layer number is the maximum MIMO layer number included in the fourth maximum MIMO layer number configuration;

if the initial BWP does not have the fourth maximum MIMO layer number configuration, the UE determines that the maximum MIMO layer number of the initial BWP is the second maximum MIMO layer number.
The method according to any one of claims 1-3, further comprising:

if the first BWP is an initial BWP or a default BWP, the UE determines whether the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number according to a set condition.
The method of claim 7, further comprising:

if the UE satisfies the setting condition, the UE determines that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number, and if the UE does not satisfy the setting condition, the UE determines that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number;

the setting conditions are as follows: the first BWP is not configured with the first maximum MIMO layer number.
The method of claim 2, wherein the determining, by the UE, the maximum MIMO layer number for the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number comprises:

and the UE acquires an indication and determines that the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number according to the indication.
The method of claim 9, wherein the UE obtaining the indication comprises:

and the UE sends auxiliary information to network equipment and receives the indication issued by the network equipment according to the auxiliary information.
The method according to claim 9 or 10, wherein the indication comprises any one of: a mode switch indication and a BWP switch indication.
The method of claim 11, wherein the BWP handover indication comprises: DCI signaling or RRC signaling.
The method of claim 11, wherein the mode switch indication comprises: an energy saving mode switching indication or a non-energy saving mode switching indication.
The method of claim 12, wherein the determining, by the UE, the maximum MIMO layer number for the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number according to the indication comprises:

if the DCI signaling or the RRC signaling includes a usage indication of a first maximum MIMO layer number or a usage indication of a second maximum MIMO layer number, determining the maximum MIMO layer number as a maximum layer number matching the usage indication.
The method of claim 13, wherein the determining, by the UE, the maximum MIMO layer number for the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number according to the indication comprises:

if the energy-saving mode switching indication or the non-energy-saving mode switching indication is that the energy-saving mode is switched to the non-energy-saving mode, the UE determines that the maximum MIMO layer number of the first BWP is a second maximum MIMO layer number;

if the energy-saving mode switching indication or the non-energy-saving mode switching indication is that the non-energy-saving mode is switched to the energy-saving mode, the UE determines that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number.
The method of claim 15, wherein the energy saving mode switching indication or non-energy saving mode switching indication is carried in an RRC reconfiguration message.
The method of claim 2, wherein the determining, by the UE, the maximum MIMO layer number for the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number comprises:

if the UE is in the energy-saving mode, determining the maximum MIMO layer number of the first BWP as the first maximum MIMO layer number;

and if the UE is in the non-energy-saving mode, determining the maximum MIMO layer number of the first BWP to be the second maximum MIMO layer number.
The method of claim 2, wherein the determining, by the UE, the maximum MIMO layer number for the first BWP to be the first maximum MIMO layer number or the second maximum MIMO layer number comprises:

if the working mode of the UE is the energy saving mode, when the UE switches to the initial BWP or default BWP, determining the maximum MIMO layer number of the first BWP as the first maximum MIMO layer number;

and if the working mode of the UE is the non-energy-saving mode, when the UE is switched to the initial BWP or default BWP, determining that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number.
The method of any of claims 1-18, wherein the first maximum MIMO layer number configuration is carried in an RRC reconfiguration message.
A user equipment, the user equipment comprising: a processing unit and a communication unit, wherein,

the communication unit is configured to receive a multi-antenna first maximum MIMO layer number configuration of a first bandwidth portion BWP and a second maximum MIMO layer number configuration of a current cell, where the configurations are issued by a network device;

the processing unit is configured to determine the maximum MIMO layer number of the first BWP according to the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration.
The user equipment of claim 20,

the processing unit is specifically configured to determine that the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number.
The user equipment according to claim 20 or 21,

the processing unit is specifically configured to enable the first BWP to be: a currently active BWP;

the currently active BWP includes any one of: initial BWP, default BWP, and normal BWP.
The user equipment according to any of claims 20-22,

the communication unit is configured to acquire a handover indication if the first BWP is a normal BWP;

the processing unit is specifically configured to switch the first BWP to an initial BWP or a defaulttbwp according to the switching instruction; determining whether the initial BWP or the default BWP has a third maximum MIMO layer-number configuration, and if the initial BWP or the default BWP has the third maximum MIMO layer-number configuration, adjusting the maximum MIMO layer-number of the initial BWP or the default BWP to a third maximum MIMO layer-number, where the third maximum MIMO layer-number is the maximum MIMO layer-number included in the third maximum MIMO layer-number configuration.
The UE of claim 23, wherein the handover indication comprises any one of: downlink control information DCI indication, radio resource control RRC indication, and BWP deactivation timer timeout.
The user equipment according to any of claims 20-22,

the processing unit is configured to determine, when the first BWP initiates a random access channel RACH, that the first BWP does not configure a downlink random access channel PRACH resource and the first BWP is a non-initial BWP, and switch the UE to the initial BWP; if the initial BWP has a fourth maximum MIMO layer number configuration, determining that the maximum MIMO layer number of the initial BWP is a fourth maximum MIMO layer number, where the fourth maximum MIMO layer number is the maximum MIMO layer number included in the fourth maximum MIMO layer number configuration; if the initial BWP does not have the fourth maximum MIMO layer-number configuration, determining the maximum MIMO layer-number of the initial BWP to be the second maximum MIMO layer-number.
The user equipment according to any of claims 20-22,

the processing unit is configured to determine, if the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number according to a set condition, if the first BWP is an initial BWP or a default BWP.
The user equipment of claim 26,

the processing unit is configured to determine, if the setting condition is satisfied, that the maximum MIMO layer number of the first BWP is a second maximum MIMO layer number, and if the setting condition is not satisfied, determine that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number;

the setting conditions are as follows: the first BWP does not configure a first maximum MIMO layer number for the first BWP.
The user equipment of claim 21,

the communication unit is used for acquiring an instruction;

the processing unit is specifically configured to determine, according to the indication, that the maximum MIMO layer number of the first BWP is a first maximum MIMO layer number or a second maximum MIMO layer number.
The user equipment of claim 28,

the communication unit is further configured to send auxiliary information to a network device, and receive the indication issued by the network device according to the auxiliary information.
The user equipment according to claim 28 or 29, wherein the indication comprises any one of: a mode switch indication and a BWP switch indication.
The user equipment of claim 29, wherein the BWP handover indication comprises: DCI signaling or RRC signaling.
The UE of claim 28, wherein the mode switch indication comprises: an energy saving mode switching indication or a non-energy saving mode switching indication.
The user equipment of claim 30,

the processing unit is specifically configured to determine, if the DCI signaling or the RRC signaling includes a use indication of a first maximum MIMO layer number or a use indication of a second maximum MIMO layer number, that the maximum MIMO layer number is the maximum layer number matched with the use indication.
The user equipment of claim 32,

the processing unit is specifically configured to determine, if the energy-saving mode switching indication or the non-energy-saving mode switching indication is that the energy-saving mode is switched to the non-energy-saving mode, that the maximum MIMO layer number of the first BWP is the second maximum MIMO layer number; determining the maximum MIMO layer number of the first BWP as the first maximum MIMO layer number if the energy saving mode switching indication or the non-energy saving mode switching indication indicates that the non-energy saving mode is to be switched to the energy saving mode.
The UE of claim 34, wherein the power saving mode switching indication or the non-power saving mode switching indication is carried in an RRC reconfiguration message.
The user equipment of claim 21,

the processing unit is specifically configured to determine, if the first BWP is in the energy saving mode, that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number; if the mode is the non-energy-saving mode, determining the maximum MIMO layer number of the first BWP as a second maximum MIMO layer number.
The user equipment of claim 21,

the processing unit is specifically configured to determine, when the operating mode of the UE is an energy saving mode and is switched to an initial BWP or a default BWP, that the maximum MIMO layer number of the first BWP is the first maximum MIMO layer number; and if the working mode of the UE is the non-energy-saving mode, when the UE is switched to the initial BWP or default BWP, determining the maximum MIMO layer number of the first BWP as a second maximum MIMO layer number.
The UE of any one of claims 20-37, wherein the first maximum MIMO layer number configuration is carried in an RRC reconfiguration message.
A MIMO layer number adaptive adjustment method is applied to a network device, and the method comprises the following steps:

the network device sends, to a UE, a first maximum MIMO layer number configuration of a first bandwidth part BWP and a second maximum MIMO layer number configuration of a current cell, where the first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration are used for the UE to determine a maximum MIMO layer number of the first BWP.
The method of claim 39, further comprising:

the network equipment sends a switching indication to the UE.
The method of claim 39, further comprising:

the network equipment receives auxiliary information sent by UE, determines an indication according to the auxiliary information and sends the indication to the UE.
The method of claim 41, wherein the indication is any one of: a mode switch indication and a BWP switch indication;

the BWP handover indication comprises: downlink control information DCI signaling or radio resource control RRC signaling.
A network device, characterized in that the network device comprises: a communication unit;

a communication unit for sending a first maximum MIMO layer number configuration for a first bandwidth portion BWP and a second maximum MIMO layer number configuration for a current cell to a UE

The first maximum MIMO layer number configuration and the second maximum MIMO layer number configuration are used for the UE to determine the maximum MIMO layer number for the first BWP.
A user device comprising a processor, memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-19.
A network device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs including instructions for performing the steps in the method of any of claims 39-42.
A computer-readable storage medium, characterized in that it stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1-19 or 39-42.
A computer program for causing a computer to perform the method of any one of claims 1-19 or 39-42.