WO2019237924A1

WO2019237924A1 - Communication method and apparatus

Info

Publication number: WO2019237924A1
Application number: PCT/CN2019/089104
Authority: WO
Inventors: 李俊超; 唐浩; 唐臻飞
Original assignee: 华为技术有限公司
Priority date: 2018-06-15
Filing date: 2019-05-29
Publication date: 2019-12-19
Also published as: CN110611938B; CN110611938A

Abstract

The present application provides a communication method and apparatus. The method comprises: a network device determining first control information, and sending the first control information to a terminal via a first bandwidth part in a first bandwidth part group; the terminal receiving the first control information via the first bandwidth part, wherein the first control information is used for indicating a second bandwidth part in a second bandwidth part group, the first bandwidth part group and the second bandwidth part group both comprise an uplink bandwidth part and a downlink bandwidth part, and the second bandwidth part is an uplink bandwidth part or a downlink bandwidth part; and the terminal activating the second bandwidth part in the second bandwidth part group according to the first control information. By means of the communication method and apparatus in the embodiments of the present application, the activation of a bandwidth part can be realized, thereby improving the system performance.

Description

Communication method and device

This application claims priority from a Chinese patent application filed with the Chinese Patent Office on June 15, 2018, with application number 201810623937.2, and with the application name "communication method and device", the entire contents of which are incorporated herein by reference.

Technical field

The present application relates to the field of communications, and more particularly, to a communication method and apparatus.

Background technique

In the 5th generation (5G) new radio (NR), the two-step resource allocation method is used to discuss and support data transmission between network devices and terminals, that is, the network device can first instruct the terminal A continuous resource in the frequency domain is called a bandwidth part (BWP), and resources and transmission data are allocated to the terminal in the bandwidth part.

Currently, it is desired to be able to support a terminal to transmit data using multiple active bandwidth portions in a cell at a given moment. Therefore, how to realize the activation of the multiple bandwidth parts mentioned above has become a technical problem to be solved urgently.

Summary of the Invention

The present application provides a communication method and device, which can realize activation of a bandwidth part, thereby improving system performance.

In a first aspect, a communication method is provided, including: a terminal receiving first control information through a first bandwidth portion in a first bandwidth portion packet, where the first control information is used to indicate a second in a second bandwidth portion packet A bandwidth part, the first bandwidth part packet and the second bandwidth part packet each include an uplink bandwidth part and a downlink bandwidth part; the terminal activates all the packets in the second bandwidth part packet according to the first control information; The second bandwidth portion is described, and the second bandwidth portion is an uplink bandwidth portion or a downlink bandwidth portion.

Specifically, the network device may indicate the second bandwidth part in the second bandwidth part packet through the first bandwidth part in the first bandwidth part packet, that is, the cross-bandwidth part grouping indication, and the terminal device may indicate according to the first control information. The current state of the second bandwidth part packet realizes an activation or deactivation operation of the bandwidth part in the second bandwidth part packet. In the embodiment of the present application, if all the bandwidth parts in the second bandwidth part packet are deactivated, the terminal may activate the second bandwidth part in the second bandwidth part packet, so that the second bandwidth part packet is activated. .

In the communication method in the embodiment of the present application, by using the first bandwidth part in the first bandwidth part group to indicate the second bandwidth part group, the multiple bandwidth parts can be activated, the implementation is simple, and the system performance is improved.

In another possible implementation manner, if at least one bandwidth part in the second bandwidth part packet in which the second bandwidth part is located is activated, the terminal may deactivate the activated bandwidth part in the second bandwidth part packet, The second bandwidth part packet is deactivated. In this case, the second bandwidth part may be activated or deactivated, which is not limited in the embodiment of the present application.

With reference to the first aspect, in a possible implementation manner, the downlink bandwidth portion in the first bandwidth portion packet includes a bandwidth portion for receiving a system message, and / or, a bandwidth portion for initial access .

With reference to the first aspect, in a possible implementation manner, the first control information is received by the terminal through a first search space corresponding to an activation bandwidth part of the first bandwidth part grouping, where the first A search space is also used for the terminal to receive second control information, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet. Optionally, the payload sizes of the first control information and the second control information are the same.

Specifically, the activated bandwidth part in the first bandwidth part group corresponds to the first search space, and the first search space is also used for the terminal to receive the second control information, and the second control information is used for network equipment to perform self-contained scheduling, that is, to The bandwidth part in the first bandwidth part packet indicates a bandwidth part in the first bandwidth part packet. In other words, the search space used by the network device for activation (or deactivation) and self-contained scheduling across a portion of the bandwidth may be the same.

The communication method in the embodiment of the present application, by using the first bandwidth part in the first bandwidth part packet to indicate the second bandwidth part in the second bandwidth part packet, can realize activation of multiple bandwidth parts, which is simple to implement without increasing The terminal blindly detects the complexity of the downlink control channel, thereby improving system performance.

With reference to the first aspect, in a possible implementation manner, the method further includes: the terminal activating at least one uplink bandwidth portion in the second bandwidth portion packet; wherein the second bandwidth portion is a downlink bandwidth In part, the at least one uplink bandwidth part is a paired uplink bandwidth part of the second bandwidth part, or the at least one uplink bandwidth part is a pre-configured uplink bandwidth part in the second bandwidth part packet.

With reference to the first aspect, in a possible implementation manner, the method further includes: the terminal activating at least one downlink bandwidth portion in the second bandwidth portion packet; wherein the second bandwidth portion is an uplink bandwidth In part, the at least one downlink bandwidth part is a paired downlink bandwidth part of the second bandwidth part, or the at least one downlink bandwidth part is a pre-configured downlink bandwidth part in the second bandwidth part packet.

When the first control information indicates a second bandwidth partial packet (that is, a packet from the bandwidth partial packet), the terminal may regard the first control information as a bandwidth partial activation signaling in the second bandwidth partial packet. When the second bandwidth part indicated by the first control information is an uplink bandwidth part, the terminal activates the indicated uplink bandwidth part, that is, the second bandwidth part. If the second bandwidth part is not paired with one or more downlink bandwidth parts, the terminal may activate a pre-configured downlink bandwidth part in the second bandwidth part packet (also referred to herein as a first activated downlink bandwidth part), otherwise, The terminal may activate a downlink bandwidth portion paired with the terminal, that is, the at least one downlink bandwidth portion described above, which is also referred to herein as a fifth bandwidth portion.

Similarly, when the second bandwidth part indicated by the first control information is a downlink bandwidth part, the terminal activates the indicated downlink bandwidth part, that is, the second bandwidth part. If the second bandwidth part is not paired with one or more uplink bandwidth parts, the terminal may activate a pre-configured uplink bandwidth part (also referred to herein as a first activated uplink bandwidth part) in the second bandwidth part packet, and vice versa, The terminal may activate an uplink bandwidth portion paired with the terminal, that is, the at least one uplink bandwidth portion described above, which is also referred to herein as a fourth bandwidth portion.

With reference to the first aspect, in a possible implementation manner, the method further includes: receiving, by the terminal, third control information through the first bandwidth part, where the third control information is used to indicate the second bandwidth Any bandwidth part in the partial packet; the terminal deactivates all bandwidth parts in the second bandwidth part packet according to the third control information.

Specifically, for the bandwidth granularity or the bandwidth granularity activation, after the second bandwidth partial packet is activated, the terminal may further receive third control information, where the third control information may indicate any of the second bandwidth partial packet. In the bandwidth part, since the second bandwidth part in the second bandwidth part group has been activated and the second bandwidth part is grouped into an activated state, the terminal may determine the third control information as deactivation instruction information, thereby deactivating the first The bandwidth part that has been activated in the second bandwidth part packet.

It should be understood that the bandwidth part indicated by the third control information may be a second bandwidth part or other bandwidth parts in the second bandwidth part group, which is not limited in the embodiment of the present application.

For the activation of the bandwidth partial packet granularity or the bandwidth partial packet pairing granularity activation, after the second bandwidth partial packet is activated, the terminal may also receive third control information, which may indicate the second bandwidth partial packet. The second bandwidth part of the bandwidth part group has been activated, and the second bandwidth part is grouped into an active state. The terminal may determine the third control information as deactivation instruction information, so as to deactivate the second bandwidth part group. Activated bandwidth portion.

With reference to the first aspect, in a possible implementation manner, the first control information is further used to instruct activation of a bandwidth part in the second bandwidth part packet, and the third control information is further used to instruct deactivation of all bandwidth parts. The bandwidth part in the second bandwidth part packet is described.

Specifically, the network device may instruct the terminal to perform an activation or deactivation operation. In a possible implementation manner, the network device may instruct the terminal to activate the bandwidth part in the second bandwidth part packet through the first control information. After the second bandwidth part packet is activated, the terminal may further instruct the terminal to deactivate the bandwidth part in the second bandwidth part packet through the third control information.

By instructing the terminal to perform the activation or deactivation operation through the display of the network device, it is possible to ensure that the understanding of the network device and the terminal is consistent, and it is not prone to errors.

With reference to the first aspect, in a possible implementation manner, a value of a first bit field of the first control information is a first value, and a value of the first bit field of the third control information is a value第二值。 The second value.

Specifically, the network device may instruct the terminal to perform an activation or deactivation operation by using a value of a first bit field in the control information, where the first bit field may include one or more bits. The network device and the terminal may agree that the value of the first bit field corresponding to the activation operation is the first value, and the value of the first bit field corresponding to the deactivation operation is the second value. Therefore, in the embodiment of the present application, the foregoing The value of the first bit field of the first control information is a first value, and the value of the first bit field of the third control information is a second value. Optionally, the format of the first control information and the third control information are the same.

As an optional embodiment, the formats of the first control information and the third control information are different. For example, the first control information may be bandwidth part granularity or bandwidth part-to-granularity activation signaling, and the third control information may be bandwidth part packet granularity or bandwidth part packet pairing granularity deactivation signaling.

As an optional embodiment, the third control information is received by the terminal through a first search space corresponding to an activated bandwidth part in the first bandwidth part packet. Optionally, the payload sizes of the third control information and the second control information are the same.

Specifically, the network device may send the third control information to the terminal through a first search space corresponding to an activated bandwidth part in the first bandwidth part packet, and accordingly, the terminal receives the network device through the first search space. The third control information sent. In other words, the search space used by network devices for cross-bandwidth partial packet deactivation and self-contained scheduling can be the same.

In this way, it is possible to realize the deactivation of multiple bandwidths while achieving simple implementation without increasing the complexity of blindly detecting the downlink control channel of the terminal, thereby improving system performance.

With reference to the first aspect, in a possible implementation manner, the first control information carries an index of the second bandwidth portion packet and / or an index of the second bandwidth portion.

With reference to the first aspect, in a possible implementation manner, after the activating the second bandwidth part in the second bandwidth part packet, the method further includes that the terminal passes the second bandwidth Partially corresponding second search spaces receive fourth control information; wherein the second bandwidth portion is a downlink bandwidth portion, and the fourth control information is used to indicate at least one bandwidth portion in the second bandwidth portion packet.

Specifically, if the second bandwidth part is a downlink bandwidth part, after the terminal activates the second bandwidth part, the terminal may further receive fourth control information through a second search space corresponding to the second bandwidth part, and the fourth control The information is used for self-contained scheduling, and indicates at least one bandwidth part in the second bandwidth part packet. The at least one bandwidth part is also referred to herein as a sixth bandwidth part, which may include both an uplink bandwidth part and a downlink bandwidth part.

With reference to the first aspect, in a possible implementation manner, after the activating the second bandwidth part in the second bandwidth part packet, the method further includes: the terminal corresponding to the seventh bandwidth part A third search space for receiving fifth control information, where the fifth control information is used to indicate at least one bandwidth portion in the second bandwidth portion packet; wherein the second bandwidth portion is an uplink bandwidth portion, and the first The seventh bandwidth portion is a paired downlink bandwidth portion of the second bandwidth portion, or the seventh bandwidth portion is a pre-configured downlink bandwidth portion in the second bandwidth portion packet.

Specifically, if the second bandwidth part is an uplink bandwidth part, after the terminal activates the second bandwidth part, the terminal may also receive the first bandwidth part through a downlink bandwidth part paired with the second bandwidth part or a pre-configured downlink bandwidth part. Five control information, which is used for self-contained scheduling, and indicates at least one bandwidth part in the second bandwidth part packet. The at least one bandwidth part is also referred to herein as an eighth bandwidth part, which may include both an uplink bandwidth part and a downlink bandwidth part.

According to a second aspect, another communication method is provided, including: a network device determines first control information, where the first control information is used to indicate a second bandwidth portion in a second bandwidth portion packet; and the network device passes the first The first bandwidth part of the bandwidth part packet sends the first control information to the terminal; wherein the first bandwidth part packet and the second bandwidth part packet both include an uplink bandwidth part and a downlink bandwidth part, and the second The bandwidth part is an uplink bandwidth part or a downlink bandwidth part.

With reference to the second aspect, in a possible implementation manner, the downlink bandwidth part in the first bandwidth part packet includes a bandwidth part for receiving a system message, and / or, a bandwidth part for initial access .

With reference to the second aspect, in a possible implementation manner, the first control information is received by the terminal through a first search space corresponding to an active bandwidth part of the first bandwidth part grouping, where the first A search space is also used for the terminal to receive second control information, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet.

With reference to the second aspect, in a possible implementation manner, the method further includes:

The network device sends third control information to the terminal through the first bandwidth part, where the third control information is used to indicate any bandwidth part in the second bandwidth part packet.

With reference to the second aspect, in a possible implementation manner, the first control information is further used to instruct activation of a bandwidth part in the second bandwidth part packet, and the third control information is further used to instruct deactivation of all bandwidth parts. The bandwidth part in the second bandwidth part packet is described.

With reference to the second aspect, in a possible implementation manner, a value of a first bit field of the first control information is a first value, and a value of the first bit field of the third control information is a value第二值。 The second value.

With reference to the second aspect, in a possible implementation manner, the first control information carries an index of the second bandwidth part packet and / or an index of the second bandwidth part.

According to a third aspect, another communication method is provided, including: the terminal receives sixth control information through a ninth bandwidth portion of the third bandwidth portion packet, and the sixth control information is used to indicate the first portion of the fourth bandwidth portion packet. Ten bandwidth parts, and an eleventh bandwidth part also exists in the fourth bandwidth part group, the eleventh bandwidth part is active, wherein the sixth control information is also used for the ninth bandwidth part. For data scheduling, the third bandwidth portion packet and the fourth bandwidth portion packet include an uplink bandwidth portion and a downlink bandwidth portion, respectively; the terminal deactivates the eleventh bandwidth portion and activates the tenth bandwidth portion.

Specifically, the ninth bandwidth part belongs to the third bandwidth part group, and the tenth bandwidth part and the eleventh bandwidth part belong to the fourth bandwidth part group. The network device can send the sixth control information to the terminal through the ninth bandwidth part, indicating the tenth The bandwidth part, wherein the tenth bandwidth part is deactivated and the eleventh bandwidth part is activated. After receiving the sixth control information, the terminal may activate the tenth bandwidth part and deactivate the eleventh bandwidth part. , While keeping the ninth bandwidth part active, that is, switching the bandwidth part. In the embodiment of the present application, the sixth control information is used for data scheduling of the tenth bandwidth part.

It should be understood that the third bandwidth partial grouping may be a primary bandwidth partial grouping, and the fourth bandwidth partial grouping may be a slave bandwidth partial grouping, but this embodiment of the present application does not limit this.

With reference to the third aspect, in a possible implementation manner, the ninth bandwidth part, the tenth bandwidth part, and the eleventh bandwidth part are all downlink bandwidth parts.

With reference to the third aspect, in a possible implementation manner, after the terminal deactivates the eleventh bandwidth part and activates the tenth bandwidth part, the method further includes that the terminal passes the first The nine-bandwidth part receives control information; or, the terminal receives the control information through the tenth bandwidth part.

After the switching of the bandwidth part is completed, the terminal may continue to use the ninth bandwidth part to receive the control information, or may use the newly activated tenth bandwidth part to receive the control information, which is not limited in this embodiment of the present application.

With reference to the third aspect, in a possible implementation manner, the sixth control information includes a resource allocation domain, and the resource allocation domain is used to instruct the terminal to receive control information through the tenth bandwidth portion.

Specifically, the network device may instruct the terminal to receive the control information through the tenth bandwidth part through the resource allocation domain in the sixth control information. In this case, the sixth control information may be non-zero scheduling downlink control information (non-zero assignment DCI). The terminal may transmit data on the resources indicated by the resource allocation domain.

With reference to the third aspect, in a possible implementation manner, the sixth control information carries an index of the fourth bandwidth part packet and / or an index of the tenth bandwidth part.

According to a fourth aspect, another communication method is provided, including: a network device determines sixth control information, where the sixth control information is used to indicate a tenth bandwidth portion in a fourth bandwidth portion packet, and the fourth bandwidth portion There is also an eleventh bandwidth part in the packet, the eleventh bandwidth part is active, and the sixth control information is also used for data scheduling of the tenth bandwidth part; the network device is grouped by the third bandwidth part The ninth bandwidth part in the sends the sixth control information, and the third bandwidth part packet and the fourth bandwidth part packet include an uplink bandwidth part and a downlink bandwidth part, respectively.

With reference to the fourth aspect, in a possible implementation manner, the ninth bandwidth part, the tenth bandwidth part, and the eleventh bandwidth part are all downlink bandwidth parts.

With reference to the fourth aspect, in a possible implementation manner, the sixth control information includes a resource allocation domain, and the resource allocation domain is used to instruct the terminal to receive control information through the tenth bandwidth portion.

With reference to the fourth aspect, in a possible implementation manner, the sixth control information carries an index of the fourth bandwidth part packet and / or an index of the tenth bandwidth part.

According to a fifth aspect, there is provided an apparatus including a unit for performing any one of the first to fourth aspects described above and each step in an implementation thereof.

In one design, the device is a communication chip, and the communication chip may include an input circuit or interface for transmitting information or data, and an output circuit or interface for receiving information or data.

In another design, the device is a terminal, and the terminal may include a transmitter for transmitting information or data, and a receiver for receiving information or data.

In yet another design, the apparatus is a network device, and the network device may include a transmitter for sending information or data, and a receiver for receiving information or data.

According to a sixth aspect, an apparatus is provided, including a processor and a memory, where the memory is configured to store a computer program, and the processor is configured to call and run the computer program from the memory, so that the apparatus executes the first aspect to the fourth aspect. Any of the aspects and methods in its implementation.

Optionally, there are one or more processors, and one or more memories.

Optionally, the memory may be integrated with the processor, or the memory is separately provided from the processor.

Optionally, the device further includes a transmitter (transmitter) and a receiver (receiver).

According to a seventh aspect, a computer program product is provided. The computer program product includes a computer program (also referred to as a code or an instruction), and when the computer program is executed, the computer executes the first aspect to the first aspect. Any of the four possible methods.

According to an eighth aspect, a computer-readable medium is provided. The computer-readable medium stores a computer program (also referred to as a code or an instruction) that, when run on a computer, causes the computer to execute the first aspect to the first aspect. Any of the four possible methods.

According to a ninth aspect, a chip system is provided, including a memory and a processor. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device installed with the chip system executes the foregoing The method in any one of the first aspect to the fourth aspect may be implemented.

The chip system may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.

FIG. 2 is an exemplary flowchart of a communication method according to an embodiment of the present application.

FIG. 3 is an exemplary flowchart of another communication method according to an embodiment of the present application.

FIG. 4 is an exemplary block diagram of a device according to an embodiment of the present application.

FIG. 5 is an exemplary block diagram of another device according to an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present application.

FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present application.

detailed description

The technical solutions in this application will be described below with reference to the drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: a global mobile communication (GSM) system, a code division multiple access (CDMA) system, and a broadband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5th generation (5G) System or new radio (NR).

The terminal in the embodiment of the present application may refer to user equipment (UE), terminal equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal , Wireless communication equipment, user agent, or user device. The terminal can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital processing (PDA), and a wireless communication function. Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in the future 5G network or terminals in the future evolved public land mobile network (PLMN), etc. This is not limited in the embodiments of the present application.

The network device in the embodiment of the present application may be a device for communicating with a terminal. The network device may be a Global System (GSM) system or a Code Division Multiple Access (CDMA) system. Base station (BTS) can also be a base station (nodeB, NB) in a wideband code division multiple access (WCDMA) system, or an evolutionary base station (evolutional nodeB) in an LTE system , ENB, or eNodeB), or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a 5G network The network equipment in the future or the network equipment in a PLMN network to be evolved in the future is not limited in the embodiments of the present application.

In the following, some concepts or terms involved in this application are briefly introduced first.

1. Bandwidth part (BWP)

In 5G NR, the two-step resource allocation method is discussed and supported for data transmission between network equipment and terminals. That is, the network equipment first allocates a bandwidth portion to the terminal, and then allocates resources to the terminal in this bandwidth portion. Resources transfer data. In the following, unless otherwise specified, transmission can refer to both uplink transmission and downlink reception.

It should be understood that the bandwidth part may also be referred to as a carrier bandwidth part, and other names may also be adopted, which is not limited in the embodiment of the present application.

It should also be understood that the cell may be a serving cell of the terminal. The serving cell is described by a high level from the perspective of resource management or mobility management or service unit. The coverage of each network device can be divided into one or more serving cells, and the serving cell can be considered to be composed of certain frequency domain resources, that is, a serving cell can include one or more carriers. The concept of a carrier is described from the perspective of signal generation at the physical layer. A carrier is defined by one or more frequency points and corresponds to a continuous or discontinuous frequency spectrum, and is used to carry communication data between network equipment and terminals. The downlink carrier can be used for downlink transmission, and the uplink carrier can be used for uplink transmission. In addition, multiple uplink bandwidth sections can be configured on one uplink carrier, and multiple downlink bandwidth sections can be configured on one downlink carrier.

Exemplarily, the part in which the network device allocates bandwidth to the terminal may be applied to any one or any combination of the following three scenarios.

(1) Large bandwidth scenario

In the communication system, with the increase of the terminal service volume and the increase in the number of terminals, the system service volume increases significantly. Therefore, in the existing communication system, a system bandwidth design is proposed to provide a large bandwidth to provide more system resources. Can provide higher data transfer rates. In a communication system with a system bandwidth of large bandwidth, considering the cost of the terminal and the traffic of the terminal, the bandwidth supported by the terminal may be smaller than the system bandwidth. The larger the bandwidth supported by the terminal, the stronger the processing capability of the terminal, the higher the data transmission rate of the terminal, and the higher the design cost of the terminal. The bandwidth supported by the terminal can also be referred to as the bandwidth capability of the terminal. Exemplarily, in a 5G system, the maximum system bandwidth may be 400 MHz, and the bandwidth capability of the terminal may be 20 MHz, 50 MHz, or 100 MHz. In a wireless communication system, the bandwidth capabilities of different terminals may be the same or different, and this embodiment of the present application does not limit this.

In a communication system with a system bandwidth of large bandwidth, since the bandwidth capability of the terminal is smaller than the system bandwidth, the network device can configure a bandwidth portion for the terminal from the system frequency resource, and the bandwidth of the bandwidth portion is less than or equal to the bandwidth capability of the terminal. When the terminal communicates with the network device, the network device may allocate some or all of the resources in the bandwidth portion configured for the terminal to the terminal for communication between the network device and the terminal.

(2) Multiple parameter set (numerology) scene

In wireless communication systems, such as 5G systems, in order to support more service types and / or communication scenarios, a design that supports multiple parameter sets is proposed. The parameter set is a parameter used by the communication system. Communication systems (such as 5G) can support multiple parameter sets. The parameter set can be defined by one or more of the following parameter information: subcarrier interval, cyclic prefix (CP), time unit, bandwidth, etc. For different service types and / or communication scenarios, parameter sets can be set independently.

In a possible configuration, a network device may configure multiple bandwidth sections in a system frequency resource, and independently configure a parameter set for each of the multiple bandwidth sections to support multiple services in the system frequency resource Type and / or communication scenario. Among them, the parameter sets of different bandwidth parts may be the same or different, which is not limited in this application.

When a terminal communicates with a network device, the network device may determine a parameter set A for communication based on a service type and / or a communication scenario corresponding to the communication, so that a corresponding bandwidth part may be configured for the terminal based on the parameter set A. The parameter set of the corresponding bandwidth part is configured as a parameter set A. When the terminal communicates with the network device, the network device may allocate some or all of the resources in the bandwidth portion configured for the terminal to the terminal for communication between the network device and the terminal.

(3) Bandwidth rollback

When the terminal communicates with the network device, the network device can configure the bandwidth portion of the terminal based on the traffic of the terminal to save power consumption of the terminal. Exemplarily, if the terminal has no service, the terminal can receive control information only in a small bandwidth portion, which can reduce the amount of radio frequency processing tasks and the amount of baseband processing tasks of the terminal, thereby reducing the power consumption of the terminal. If the service volume of the terminal is small, the network device can configure the terminal with a smaller bandwidth portion, which can reduce the amount of radio frequency processing tasks and baseband processing tasks of the terminal, thereby reducing the power consumption of the terminal. If the terminal has a large amount of traffic, the network device can configure a larger bandwidth portion for the terminal, thereby providing a higher data transmission rate. When the terminal communicates with the network device, the network device may allocate some or all of the resources in the bandwidth portion configured for the terminal to the terminal for communication between the network device and the terminal.

Exemplarily, the bandwidth part may be a downlink bandwidth part, which is used for the downlink reception of the terminal. At this time, the bandwidth of the bandwidth part does not exceed the receiving bandwidth capability of the terminal; the bandwidth part may also be an uplink bandwidth part, which is used by the terminal to send uplink. At this time, the bandwidth of the bandwidth part does not exceed the transmission bandwidth capability of the terminal.

The network device can configure multiple bandwidth parts for the terminal, and the bandwidth part includes both the uplink bandwidth part and the downlink bandwidth part. Generally, the uplink bandwidth part and the downlink bandwidth part are independently configured, including independently configuring their frequency positions, bandwidths, and parameter sets.

At a given moment, the terminal performs data transmission based on the active bandwidth part of the configured bandwidth part. The terminal does not expect to perform downlink reception outside the downlink bandwidth portion, and does not expect to perform uplink transmission outside the uplink bandwidth portion. This transmission characteristic can also be called self-contained transmission. For example, at a given moment, the terminal has an activated downlink bandwidth portion and an activated uplink bandwidth portion (if a supplementary uplink carrier (SUL) is configured in the cell, an uplink bandwidth portion may be additionally activated). For time division duplex (TDD) mode, the active uplink bandwidth part and the downlink bandwidth part are center-aligned (the uplink bandwidth part on the SUL is not required to be aligned with the downlink bandwidth part), and the active bandwidth part and downlink The bandwidth part forms a pair of bandwidth parts.

2. Bandwidth grouping

When it is desired to be able to support a terminal to transmit data using multiple active downlink bandwidth portions and multiple active uplink bandwidth portions in a cell at a given moment, the following concept of grouping bandwidth portions is proposed. Taking at least one activated bandwidth part included in each bandwidth part group as a whole, the terminal can simultaneously use multiple bandwidth parts to transmit data, and the system has high compatibility and simple implementation.

The network device can divide the bandwidth part configured for the same service of the terminal into a bandwidth part packet. For example, one bandwidth part packet is used to transmit enhanced mobile broadband (eMBB) services, and another bandwidth part packet is used to transmit ultra-high bandwidth. High-reliability ultra-low latency communication (URLLC) service; or, one bandwidth part packet is used for access link, and another bandwidth part packet is used for return link; or one bandwidth part packet is used for The link between the network equipment and the terminal, and another bandwidth portion is used for the link between the terminal and the terminal. Of course, the network equipment may have other division criteria, which is not limited in this application.

The following describes in detail how to group the bandwidth parts for two different grouping schemes.

(1) The first bandwidth partial grouping scheme

The N bandwidth sections configured for the terminal may be configured or represented as G bandwidth section packets, and the i th bandwidth section packet in the G bandwidth section packets includes N _{i, UL} uplink bandwidth sections and N _{i, DL} downlink bandwidth parts. The numbers of the above N _{i, UL} uplink bandwidth parts and N _{i, DL} downlink bandwidth parts may be the same or different in the i-th bandwidth part grouping.

On this basis, the configured bandwidth parts can be paired, and at least two bandwidth parts that are paired with each other are called a bandwidth part pair. For a bandwidth part in a bandwidth part pair, the bandwidth part other than the bandwidth part in the bandwidth part pair is the paired bandwidth part of the bandwidth part.

It should be understood that the foregoing bandwidth part pairs may also be referred to as bandwidth part bundles. Since the bandwidth part pairs may be unidirectional or bidirectional, the number of unidirectional bandwidth parts in the bandwidth part combination is at least 2, the number of bidirectional bandwidth parts is also at least 2.

Below, based on the first bandwidth part grouping scheme, the concept of bandwidth part pairs is extended, including:

• The bandwidth part pair is unidirectional, that is, a bandwidth part pair can contain multiple uplink bandwidth parts in a bandwidth part group, or a bandwidth part pair can contain multiple downlink bandwidth parts in a bandwidth part group. This situation can be applied to a frequency division duplex (FDD) mode. Pairing multiple uplink bandwidth parts or multiple downlink bandwidth parts helps the terminal to use these paired uplink bandwidth parts or downlink bandwidth parts in a bandwidth part packet at the same time. For example, a transmission block (TB) of a terminal is Map on the multiple uplink bandwidth parts or the multiple downlink bandwidth parts. A bandwidth part packet may include both a paired uplink bandwidth part and / or a downlink bandwidth part and an unpaired uplink bandwidth part and / or an unpaired downlink bandwidth part.

The bandwidth part pair is bidirectional, that is, a bandwidth part pair may include one or more uplink bandwidth parts and one or more downlink bandwidth parts in a bandwidth part packet. This situation can be applied to TDD mode.

In the case where the bandwidth part pair is bidirectional, further, each uplink bandwidth part in a bandwidth part packet has one or more downlink bandwidth parts paired with the bandwidth part in the bandwidth part packet, and one bandwidth part packet Each of the downlink bandwidth sections has one or more uplink bandwidth sections paired with the bandwidth section within the bandwidth section packet.

In the case where the bandwidth part pair is bidirectional, at least one uplink bandwidth part can be allowed in a bandwidth part packet, and there is no downlink bandwidth part paired with the uplink bandwidth part; or at least one downlink bandwidth exists in the bandwidth part packet In part, there is no uplink bandwidth part paired with this downlink bandwidth part.

In this application, a bandwidth part grouping may include one or more of the following: the above-mentioned two-way bandwidth part pair, a unidirectional bandwidth part pair, and an unpaired bandwidth part.

(2) The second bandwidth grouping scheme

The N bandwidth sections configured for the terminal can be configured or represented as G bandwidth section packets, and the i th bandwidth section packet in the G bandwidth section packets is composed of N _{i, UL} uplink bandwidth sections, that is, the first The i bandwidth part is grouped as an uplink bandwidth part packet; or, the i th bandwidth part group of the G bandwidth part packets is composed of N _{i, DL} downlink bandwidth parts, that is, the i th bandwidth part is grouped as a downlink bandwidth part. Grouping.

On this basis, the uplink bandwidth part packet can be paired with or correspond to the downlink bandwidth part packet, which is called bandwidth part packet pairing. Here, no distinction is made between FDD mode and TDD mode, and the pairing is to support the uplink transmission and downlink feedback of the terminal. The number of bandwidth partial packets in the bandwidth partial packet pairing is at least two.

On this basis, the configured bandwidth parts can be paired, and at least two bandwidth parts that are paired with each other are called a bandwidth part pair. For a bandwidth part in a bandwidth part pair, the bandwidth part other than the bandwidth part in the bandwidth part pair is the paired bandwidth part of the bandwidth part. It can be understood that the bandwidth part of the pairing includes at least two bandwidth parts. Further, the paired bandwidth portion may be obtained in groups based on the paired bandwidth portion.

Below, based on the second bandwidth part grouping scheme, the concept of bandwidth part pairs is extended, including:

The bandwidth part pair is unidirectional, that is, a bandwidth part pair may include multiple uplink bandwidth parts in one uplink bandwidth part packet, or a bandwidth part pair may include multiple downlink bandwidth parts in one downlink bandwidth part packet. In an uplink bandwidth part packet, it can contain both a paired uplink bandwidth part and an unpaired uplink bandwidth part. In a downlink bandwidth part packet, it can contain both a paired downlink bandwidth part and an unpaired downlink bandwidth. section.

The bandwidth part pair is bidirectional, that is, one bandwidth part pair may include one or more uplink bandwidth parts in an uplink bandwidth part packet, and one or more downlink bandwidth parts in a downlink bandwidth part packet paired with or corresponding thereto. . For a bandwidth part in a bandwidth part pair, the bandwidth part other than the bandwidth part in the bandwidth part pair is the paired bandwidth part of the bandwidth part.

In the case where the bandwidth part pair is bidirectional, further, for each uplink bandwidth part in a given uplink bandwidth part packet, there is an uplink bandwidth part in a downlink bandwidth part packet corresponding to the uplink bandwidth part packet. One or more downlink bandwidth parts that are paired; for each downlink bandwidth part in a given downlink bandwidth part packet, there is one paired with the downlink bandwidth part in an uplink bandwidth part packet corresponding to the downlink bandwidth part packet Or multiple upstream bandwidth sections.

In the case where the bandwidth part pair is bidirectional, at least one uplink bandwidth part can be allowed in an uplink bandwidth part packet, and there is no downlink bandwidth part paired with the uplink bandwidth part; or at least one downlink bandwidth part packet can be allowed to exist There is a downlink bandwidth portion, and there is no uplink bandwidth portion paired with the downlink bandwidth portion.

In this application, a bandwidth partial packet pairing may include one or more of the following:

The above-mentioned two-way bandwidth part pairs, one-way bandwidth part pairs and unpaired bandwidth parts. For example, any one of the above-mentioned two-way bandwidth part pair, one-way bandwidth part pair and unpaired bandwidth part is located in the bandwidth part packet pairing; or, the above-mentioned two-way bandwidth part pair, one-way bandwidth part pair and unpaired bandwidth part Multiple types of are located in the bandwidth partial packet pairing. The present application does not limit the number of the same type and / or different types in the packet pairing of the bandwidth portion.

In the following, unless otherwise specified, the bandwidth partial packet may refer to either the bandwidth partial packet in the first bandwidth partial packet scheme or the uplink bandwidth partial packet and / or the downlink bandwidth partial packet in the second bandwidth partial packet.

In addition, based on the bandwidth partial grouping, the terminal has two possible transmission modes, namely a frequency division multiplexing (FDM) mode and a time division multiplexing (TDM) mode.

In FDM mode, the terminal can use these activated bandwidth parts to transmit data in parallel. For example, one bandwidth part packet is used to transmit eMBB services, and the other bandwidth part packet is used to transmit URLLC services; or, one bandwidth part packet is used to receive data. For the inbound link, another bandwidth part packet is used for the backhaul link; or, one bandwidth part packet is used for the link between the network device and the terminal, and another bandwidth part packet is used for the link between the terminal and the terminal. The quality of service (QoS) requirement that needs to be met at this time may be the (overall or average) transmission rate / throughput on each bandwidth portion packet.

In TDM mode, the terminal uses only the bandwidth portion of one of the multiple bandwidth portion packets for data transmission at a given time, but by activating multiple bandwidth portions belonging to different bandwidth portion packets, the terminal can not increase the parallelism. While processing power, it can quickly respond to different services (for example, zero-latency switching between bandwidth parts).

3. Activation / deactivation of the bandwidth part

(1) Activate / deactivate granularity of bandwidth

For the above-mentioned multi-parameter set scenario and bandwidth fallback scenario, 5G NR supports the dynamic switching of the bandwidth portion indicated by downlink control information (DCI), so as to achieve rapid switching of different parameters and / or energy saving. Optionally, the DCI may be a scheduling DCI for scheduling terminal specific uplink / downlink data. The so-called terminal-specific downlink data refers to the data sent by the network device to the designated terminal, and the so-called terminal-specific uplink data refers to the data sent by the designated terminal to the network device.

If there can only be one active bandwidth part at a time on a carrier, the dynamic switching of the bandwidth part is the activation and deactivation of the bandwidth part. Among them, the activated bandwidth part can be understood as the current working bandwidth part of the terminal, and the terminal can receive downlink reference signals (including downlink demodulation reference signal (DMRS), channel state information reference signal on the activated downlink bandwidth part) channel state information reference (CSI-RS), physical downlink control channel (PDCCH), and physical downlink data channel (physical downlink link shared channel (PDSCH)) can send uplink reference signals (PDSCH) on the active uplink bandwidth part Including uplink DMRS), physical uplink control channel (PUCCH), and physical uplink data channel (PUSCH). Switching the bandwidth part means deactivating the currently activated bandwidth part, and at the specified time The indicated bandwidth is partially activated.

For example, for a multi-parameter set scenario, a network device can configure two bandwidth parts for a terminal, one corresponding to parameter set A and the other corresponding to parameter set B; when the terminal works on the bandwidth part of corresponding parameter set A, the network device The terminal may be switched to the bandwidth portion of the corresponding parameter set B by sending dynamic signaling on the bandwidth portion, and vice versa.

For another example, for a bandwidth fallback scenario, a network device can configure two bandwidth parts for the terminal, one with a larger bandwidth and the other with a smaller bandwidth; when the terminal works on the bandwidth part with a small bandwidth, the network device can Dynamic signaling is sent on this bandwidth part to switch the terminal to the bandwidth part of the large bandwidth, so that the terminal can quickly respond to the burst service; otherwise, when the terminal works on the bandwidth part of the large bandwidth, the network device can pass the bandwidth Partially sends dynamic signaling to switch the terminal to the bandwidth portion of the small bandwidth, thereby enabling the terminal to save energy.

In 5G NR, the dynamic signaling that enables the switching of the bandwidth part is DCI for user data scheduling in the bandwidth part. Specifically, the configured bandwidth part has a unique index, and the DCI includes a bandwidth part index indication field for indicating on which bandwidth part the data scheduled by the DCI is transmitted.

For example, the terminal is configured with two bandwidth parts, namely, bandwidth part A and bandwidth part B. When the terminal works on bandwidth part A, the bandwidth part index in the received DCI indicates that the bandwidth part indicated by the domain is the bandwidth part B, the terminal switches from bandwidth part A to bandwidth part B, and then transmits the data scheduled in the DCI on bandwidth part B; when the terminal works on bandwidth part A, the bandwidth part index in the received DCI indicates the domain The indicated bandwidth part is the bandwidth part A, and the terminal transmits the data scheduled in the DCI on the bandwidth part A.

It should be understood that due to adjustments of parameters such as the sampling rate and the voltage used for the voltage controlled oscillator, the switching of the bandwidth part needs to consider the switching delay.

(2) Granularity activation / deactivation of bandwidth

The granularity activation / deactivation of the bandwidth part may be based on the granularity activation / deactivation of the bandwidth part. When an uplink bandwidth part is activated, all bandwidth parts paired with the uplink bandwidth part are activated; when a downlink bandwidth part is activated, all bandwidth parts paired with the downlink bandwidth part are activated. Similarly, when an uplink bandwidth part is deactivated, all bandwidth parts paired with the uplink bandwidth part are deactivated; when a downlink bandwidth part is deactivated, all bandwidth parts paired with the downlink bandwidth part are deactivated.

Or, another equivalent description manner is that when a bandwidth part pair is activated, all bandwidth parts in the bandwidth part pair are activated; when the bandwidth part pair is deactivated, all bandwidth parts in the bandwidth part pair are deactivated.

(3) Activation / deactivation of the bandwidth part packet pairing granularity

This activation / deactivation method is based on the second bandwidth partial grouping scheme.

When a bandwidth partial packet pairing is activated, the first activated uplink bandwidth portion in the upstream bandwidth partial packet in the bandwidth partial packet pairing is activated, and the first activated downstream bandwidth portion in the downstream bandwidth partial packet in the bandwidth partial packet pairing is activated. The first activated uplink bandwidth part in the uplink bandwidth part packet may be a pre-configured bandwidth part or a bandwidth part configured by the network device for the terminal through signaling. The first activated downlink bandwidth part in the downlink bandwidth part packet may be It is the pre-configured bandwidth part, and the bandwidth part that the network device can configure for the terminal through signaling.

Alternatively, when activating a bandwidth partial packet pairing, a first active bandwidth partial pair is activated, and an uplink bandwidth portion of the first active bandwidth partial pair is included in an uplink bandwidth partial packet in the bandwidth partial packet pairing, and the first active bandwidth is The downlink bandwidth part of the partial pair is included in the downlink bandwidth part packet in the bandwidth part packet pairing. The first activated bandwidth partial pair may be a pre-configured bandwidth partial pair, or a bandwidth partial pair configured by the network device for the terminal through signaling.

(4) Activation / deactivation of bandwidth granularity

· Based on the first bandwidth partial grouping scheme

When a bandwidth part packet is activated, the first activated downlink bandwidth part and the first activated uplink bandwidth part in the bandwidth part packet are activated. The first activated uplink bandwidth part may be one or more pre-configured bandwidth parts, or one or more bandwidth parts configured by the network device for the terminal through signaling; the first activated downlink bandwidth part may be one pre-configured one. Or multiple bandwidth parts, or one or more bandwidth parts configured by the network device for the terminal through signaling.

Alternatively, when a bandwidth partial packet is activated, the first activated bandwidth partial pair in the bandwidth partial packet is activated. The first bandwidth part pair includes an uplink bandwidth part and a downlink bandwidth part. The first activated bandwidth partial pair may be a pre-configured bandwidth partial pair, or a bandwidth partial pair configured by the network device for the terminal through signaling. When a bandwidth part pair is activated, all bandwidth parts in the bandwidth part pair are activated.

· Based on the second bandwidth partial grouping scheme

When an uplink bandwidth part packet is activated, the first activated uplink bandwidth part in the uplink bandwidth part packet is activated. Further, a first activated downlink bandwidth portion in a downlink bandwidth portion packet corresponding to the uplink bandwidth portion packet may be activated. Similarly, when a downlink bandwidth part packet is activated, the first activated downlink bandwidth part in the downlink bandwidth part packet is activated. Further, the first activated uplink bandwidth part in the uplink bandwidth part packet corresponding to the downlink bandwidth part packet may be activated. The first activated uplink bandwidth part in the uplink bandwidth part packet may be a pre-configured bandwidth part, or the bandwidth part configured by the network device for the terminal through signaling; the first activated downlink bandwidth part in the downlink bandwidth part packet may be The pre-configured bandwidth part may also be a bandwidth part configured by the network device for the terminal through signaling.

Alternatively, when an uplink bandwidth partial packet is activated, a downlink bandwidth partial packet corresponding to the uplink bandwidth partial packet is activated, a first active bandwidth partial pair is activated, and an uplink bandwidth portion of the first active bandwidth partial pair is included in the uplink bandwidth partial packet. The downlink bandwidth part of the first active bandwidth part pair is included in the downlink bandwidth part packet. Similarly, when activating a downlink bandwidth partial packet, the uplink bandwidth partial packet corresponding to the downlink bandwidth partial packet is activated, the first active bandwidth partial pair is activated, and the uplink bandwidth portion of the first active bandwidth partial pair is included in the uplink bandwidth partial packet. , The downlink bandwidth part of the first active bandwidth part pair is included in the downlink bandwidth part packet. The first activated bandwidth partial pair may be a pre-configured bandwidth partial pair, or a bandwidth partial pair configured by the network device for the terminal through signaling.

It should be understood that in this application, if at least one bandwidth part of a bandwidth part packet is in an activated state, the bandwidth part packet is considered to be in an activated state, and if all bandwidth parts in a bandwidth part packet are in a deactivated state, then The bandwidth portion is considered to be in a deactivated state.

It should also be understood that deactivation can be understood as no data transmission, but the bandwidth portion can still be activated when no data transmission is performed. For example, in TDM mode, the terminal uses only the bandwidth portion of one of the bandwidth portion packets for data transmission at a given time. In addition, the terminal needs to blindly detect the downlink control channel on the activated downlink bandwidth portion, rather than blindly detect the downlink control channel on the deactivated downlink bandwidth portion. In subsequent evolution, the terminal may not blindly detect the downlink control on the activated downlink bandwidth portion. Channels, for example, where packet scheduling across the bandwidth is supported. The cross-bandwidth partial packet scheduling and self-contained scheduling of the bandwidth partial packet are explained in detail below.

It should be understood that the bandwidth partial packet may have the characteristics of self-contained transmission. The so-called self-contained transmission refers to the granularity activation / deactivation of the bandwidth portion through downlink control signaling, or the granularity activation / deactivation of the bandwidth portion through downlink control signaling, that is, the first Bandwidth part grouping scheme. The bandwidth part carrying the downlink control signaling and the bandwidth part indicated by the downlink control signaling belong to the same bandwidth part grouping. For the second bandwidth part grouping scheme, when the bandwidth part indicated by the downlink control signaling is In the downlink bandwidth part, the bandwidth part carrying the downlink control signaling and the bandwidth part indicated by the downlink control signaling belong to the same downlink bandwidth part grouping. When the bandwidth part indicated by the downlink control signaling is the uplink bandwidth part, the downlink is carried. The bandwidth portion of the control signaling and the bandwidth portion indicated by the downlink control signaling belong to the paired downlink bandwidth portion packet and the uplink bandwidth portion packet, respectively.

It should also be understood that the bandwidth partial packet can also support the characteristics of scheduling across the bandwidth partial packet. The so-called cross-bandwidth partial packet scheduling means that when data scheduling is performed through downlink control signaling, for the first bandwidth partial grouping scheme, the bandwidth portion carrying the downlink control signaling and the bandwidth portion indicated by the downlink control signaling belong to different bandwidths. Partial grouping; for the second bandwidth partial grouping scheme, when the bandwidth portion indicated by the downlink control signaling is the downlink bandwidth portion, the bandwidth portion carrying the downlink control signaling and the bandwidth portion indicated by the downlink control signaling belong to different downlinks The bandwidth part is grouped. When the bandwidth part indicated by the downlink control signaling is the uplink bandwidth part, the downlink bandwidth part packet that belongs to the bandwidth part carrying the downlink control signaling and the bandwidth part indicated by the downlink control signaling belong to the uplink bandwidth part. The paired downlink bandwidth partial packets and uplink bandwidth partial packets.

In the embodiment of the present application, the activation / deactivation of the cross-bandwidth partial packet is similar to the cross-bandwidth partial packet scheduling, which refers to the bandwidth part granularity, bandwidth part-to-granularity, or bandwidth part packet granularity activation / go activate.

4. Initial access bandwidth part

The initial access bandwidth part includes an initial access downlink bandwidth part and an initial access uplink bandwidth part, which are used by the terminal to perform initial access and establish a connection with a network device.

The initial access downstream bandwidth part is determined through the master message block (master information block (MIB) notification). For example, the terminal finds a synchronization signal block by blindly detecting the synchronization signal grid, and the information carried in the MIB in the synchronization signal block includes between the lowest position in the frequency domain of the initial access downlink bandwidth part and the lowest position in the frequency domain of the synchronization signal block. And the bandwidth of the initial access downlink bandwidth portion, the terminal determines the initial access downlink bandwidth portion according to the MIB. The terminal receives the first system information (system information block 1, SIB 1), random access response (RAR), and message 4 (Message 4) in the initial access downlink bandwidth portion, and the scheduling information of these messages make.

In another implementation manner, the frequency domain position and bandwidth of the initial access downlink carrier bandwidth portion may be defined to be the same as the frequency domain position and bandwidth of the control channel resource set (CORESET) of the scheduling SIB1. At this time, the MIB may notify the offset between the lowest position in the frequency domain of the CORESET and the lowest position in the frequency domain of the synchronization signal block, and the bandwidth of the CORESET, indirectly indicating the initial access to the downlink carrier bandwidth portion.

The uplink bandwidth part of the initial access is determined through the SIB notification. For example, the message carried in SIB 1 includes the first frequency offset (offset1) of the reference point A (reference point A) relative to the reference frequency position (for example, the lowest subcarrier of the lowest RB of the synchronization signal block), the uplink virtual Carrier start resource block (resource block, RB) relative to the second frequency offset (offset2) of reference point A, the initial access to the uplink bandwidth part of the start RB relative to the uplink virtual carrier start RB third frequency offset (offset3), and the bandwidth of the initial access uplink bandwidth portion. The public RB index can be defined based on the reference point A. The public RBs are numbered in a direction of increasing frequency from the public RB 0, and the center of the lowest subcarrier of the public RB 0 is the reference point A. The terminal sends a physical random access channel (physical random access channel (PRACH)) and a message 3 (Message 3) in the initial access uplink bandwidth part.

It should be understood that the initial access bandwidth part may be included in the main bandwidth part group, or may not be included in any bandwidth part group, which is not limited in the embodiment of the present application. The following first introduces the concept of the main bandwidth part grouping, and then explains the relationship between the main bandwidth part grouping and the initial access bandwidth part in detail.

5. Main bandwidth part grouping

The main bandwidth part packet may be defined as a bandwidth part packet including a bandwidth part for receiving a system message and / or a bandwidth part for initial access.

(1) The main bandwidth part packet includes a bandwidth part for receiving system messages

The main bandwidth part packet is used for the terminal to receive the system message, in other words, the terminal receives the system message (including the DCI for scheduling the system message) in the main bandwidth part packet. For example, the terminal can receive system messages on any active portion of the bandwidth. When the system supports activating a bandwidth part at a given moment, the terminal will receive a system message. In the scenario of multiple active bandwidth sections, if the terminal still needs to receive system messages on each activated bandwidth section, because there is no difference in the content carried by these system messages, receiving multiple copies cannot obtain gain. Second, the terminal needs Blind detection of multiple DCIs used for scheduling system messages will increase the number of blind detections of the terminal, thereby increasing the energy consumption of the terminal. Therefore, the behavior of the terminal can be limited, that is, in a scenario with multiple active bandwidths, the terminal only needs to receive one system message. In this paper, the bandwidth part defined for receiving the system message is an active downlink bandwidth part in the main bandwidth part packet. This article refers to the non-master bandwidth part grouping as the slave bandwidth part grouping, but it should be understood that the master bandwidth part grouping and the slave bandwidth part grouping are merely exemplary names used for convenience of description, and other names may also be used, which is not made in this application. limited.

Further, in the TDM mode, for the first bandwidth partial grouping scheme, the main bandwidth partial grouping is the bandwidth partial grouping currently used for data transmission, and for the second bandwidth partial grouping scheme, the main bandwidth partial grouping is currently used for the downlink. The downlink bandwidth partial packet for data transmission, or the downlink bandwidth partial packet corresponding to the uplink bandwidth partial packet currently used for uplink data transmission. Through the dynamic switching of the main bandwidth part of the packet, the terminal can quickly respond to different services without increasing parallel processing capabilities. In addition, the terminal blindly detects downlink control information only in the main bandwidth part of the packet.

(2) The main bandwidth part grouping includes the part for initial access bandwidth

In this case, the initial access bandwidth part is included in the main bandwidth part group. Therefore, the bandwidth part can be divided according to the position of the initial access bandwidth part, thereby determining the main bandwidth part group. Specifically, the network device may configure the main bandwidth partial grouping according to both implicit and explicit situations.

If the main bandwidth part grouping is implicitly configured, the terminal may determine whether the bandwidth part grouping is the main bandwidth part grouping based on whether the bandwidth part grouping includes the initial access downlink bandwidth part when configuring the bandwidth part grouping. If the bandwidth part packet includes the initial access downlink bandwidth part, the bandwidth part group is a main bandwidth part packet; otherwise, the bandwidth part packet is not a main bandwidth part packet.

If the main bandwidth part group is explicitly configured, the network device and the terminal may associate the initial access bandwidth part with the main bandwidth part group.

For the display configuration, for example, the initial access bandwidth part is bandwidth part 0, and the network device is configured with three additional bandwidth parts, namely, bandwidth part 1, bandwidth part 2, and bandwidth part 3. The network device is configured with two bandwidth part groups, where bandwidth part group 1 includes bandwidth part 1, bandwidth part group 2 includes bandwidth part 2 and bandwidth part 3, and the network device is configured with bandwidth part group 1 as the main bandwidth part group. Then, the bandwidth part group 1 also includes an initial access downlink bandwidth part, that is, the bandwidth part group 1 includes a bandwidth part 0 and a bandwidth part 1, and the bandwidth part group 2 includes a bandwidth part 2 and a bandwidth part 3.

For another example, the initial access bandwidth part is bandwidth part 0, and the network device is configured with four additional bandwidth parts, namely bandwidth part 1, bandwidth part 2, bandwidth part 3, and bandwidth part 4. The network device is configured with two bandwidth part groups, of which the bandwidth part 1 and the bandwidth part 2 included in the bandwidth part group 1, the bandwidth part group 2 includes the bandwidth part 3 and the bandwidth part 4, and the network device is configured with the bandwidth part group 1 as The main bandwidth part is grouped, and the bandwidth part group 1 also includes the initial access downlink bandwidth part, that is, the bandwidth part group 1 includes bandwidth part 0, bandwidth part 1, and bandwidth part 2, and the bandwidth part group 2 includes bandwidth part 3 and bandwidth part 4. .

It should be understood that configuring the initial access downlink bandwidth portion in a downlink bandwidth portion packet is beneficial to guaranteeing the characteristics of the bandwidth portion packet self-contained transmission, especially when the terminal is configured with only one (downlink) bandwidth portion packet. When the downlink control signaling is allowed to instruct the bandwidth part to switch to the initial access downlink bandwidth part, the initial access downlink bandwidth part needs to be configured in a downlink bandwidth part group. When the terminal is configured with only one (downlink) bandwidth partial packet, the bandwidth partial packet may also be defaulted as the main bandwidth partial packet.

In this application, it is defined that the bandwidth part grouping where the initial access bandwidth part is located is the main bandwidth part grouping, which is beneficial to saving the overhead of sending system messages on the network device side. One possible application scenario is the FDM mode, where the terminal uses these activated bandwidth portions to transmit data in parallel. Because the network device will definitely send system messages on the initial access downlink bandwidth part, that is, the bandwidth part grouping of the initial access downlink bandwidth part must include system messages. Defining the bandwidth part grouping as the main bandwidth part grouping allows the network device It is not necessary to send system messages in other bandwidth partial packets, thereby saving the overhead of system messages in the network.

(3) The initial access bandwidth part is not included in any bandwidth part packet

In this case, the network device needs to indicate the main bandwidth portion of the packet. The limitation may also be modified as follows: the initial access bandwidth part is not in the main bandwidth part group.

For example, the initial access bandwidth part is bandwidth part 0, and the network device is additionally configured with 4 bandwidth parts, namely bandwidth part 1, bandwidth part 2, bandwidth part 3, and bandwidth part 4. The network device is configured with two bandwidth part groups, of which the bandwidth part group 1 includes bandwidth part 1 and bandwidth part 2, the bandwidth part group 2 includes bandwidth part 3 and bandwidth part 4, and the network device configuration bandwidth part group 1 is mainly Bandwidth part grouping, the terminal is finally configured with: Bandwidth part grouping 1 which includes bandwidth part 1 and bandwidth part 2, Bandwidth part grouping 2 which includes bandwidth part 3 and bandwidth part 4, and independent of any bandwidth part grouping. The initial access bandwidth part is the bandwidth part 0.

It should be understood that configuring the initial access downlink bandwidth portion out of any bandwidth portion grouping is beneficial to dynamically switching the main bandwidth portion grouping. In TDM mode, the terminal uses only one bandwidth part packet of multiple bandwidth part packets for data transmission at a given moment. For the first bandwidth part grouping scheme, the main bandwidth part group is the bandwidth part currently used for data transmission. Grouping. For the second bandwidth partial grouping scheme, the main bandwidth partial grouping is the downlink bandwidth partial grouping currently used for downlink data transmission, or the downlink bandwidth partial grouping corresponding to the uplink bandwidth partial grouping currently used for uplink data transmission. Through the dynamic switching of the main bandwidth part of the packet, the terminal can quickly respond to different services without increasing the parallel processing capability, and it also helps to ensure the characteristics of the main bandwidth part of the packet's self-contained transmission. In addition, the terminal may blindly detect the downlink control information only in the main bandwidth part of the packet.

In a possible implementation manner, the relationship between the initial access bandwidth part and the bandwidth part grouping may be determined according to different situations, that is, the above situation (2) or situation (3) is adopted.

Specifically, when the number of additional bandwidth sections configured by the network device is less than N, the initial access bandwidth section is grouped in the main bandwidth section, which is the case (2) above; when the number of additional configured bandwidth sections of the network device is greater than or When it is equal to N, the initial access bandwidth part may not be included in any of the bandwidth part packets, which is the case (3) above.

For example, only 2 bits in the downlink control information are used to indicate the configured bandwidth part. Therefore, when the number of additional configured bandwidth parts is less than 4 (N = 4), it is necessary to support the indication of the initial access bandwidth part through the downlink control information. ; When the number of additional configured bandwidth parts is greater than or equal to 4, the initial access bandwidth part may not be indicated through downlink control information.

As an optional embodiment, in the TDM mode, the initial access bandwidth part may not be in any of the bandwidth part groups, or the initial access bandwidth part is not in the main bandwidth part group; in the FDM mode, the initial access bandwidth part Can be grouped in the main bandwidth section.

Based on the above, the network device can be configured with the following two restrictions:

1. The main bandwidth part of the packet cannot be scheduled across the bandwidth part of the packet

For the first bandwidth part grouping scheme, if data A is transmitted on a bandwidth part of the main bandwidth part packet, the scheduling information of the data A comes from a bandwidth part in the main bandwidth part packet. For the second bandwidth partial grouping scheme, if uplink data B is transmitted on an uplink bandwidth portion of the uplink bandwidth partial packet corresponding to the main bandwidth partial packet, the scheduling information of the uplink data B comes from the main bandwidth partial packet. The downlink data C is transmitted on a downlink bandwidth part of the main bandwidth part packet, and then the scheduling information of the downlink data C comes from the main bandwidth part packet.

2. Activate / deactivate the bandwidth part of the packet from the bandwidth part packet by grouping the main bandwidth part packet

For this condition, the method 200 will be described in detail below.

In order to facilitate understanding of the embodiments of the present application, a communication system applicable to the embodiments of the present application is briefly introduced first with reference to FIG. 1. FIG. 1 is a schematic diagram of a communication system 100 applicable to an embodiment of the present application. As shown in FIG. 1, the communication system 100 includes at least two communication devices, for example, a network device 110 and a terminal 120, wherein the network device 110 and the terminal 120 can perform data communication through a wireless connection.

On the basis of the above-mentioned grouping of the bandwidth parts, how to implement the activation / deactivation of multiple bandwidth parts has become a technical problem to be solved urgently. In view of this, the present application provides a communication method, which can realize activation of multiple bandwidth parts, thereby improving system performance. The communication method provided in the present application is described in detail below with reference to FIGS. 2 to 3.

FIG. 2 is an exemplary flowchart of a communication method 200 according to an embodiment of the present application. It should be understood that the network device in the method shown in FIG. 2 may correspond to the network device in the system 100 shown in FIG. 1, and the terminal may correspond to any one of the terminals shown in FIG. 1.

S210: The network device determines first control information, where the first control information is used to indicate a second bandwidth portion in a second bandwidth portion packet, where the second bandwidth portion is an uplink bandwidth portion or a downlink bandwidth portion;

S220. The network device sends the first control information to the terminal through the first bandwidth portion in the first bandwidth portion packet, and correspondingly, the terminal receives the first control information through the first bandwidth portion in the first bandwidth portion packet. Control information

S230. The terminal activates the second bandwidth part in the second bandwidth part packet according to the first control information.

Optionally, the first bandwidth part packet and the second bandwidth part packet each include an uplink bandwidth part and a downlink bandwidth part.

Specifically, the network device may indicate the second bandwidth part group by using the first bandwidth part of the first bandwidth part group, and the terminal device may implement the second bandwidth part group according to the current state of the indicated second bandwidth part group. The activation or deactivation operation of the bandwidth part. In the embodiment of the present application, if all the bandwidth parts in the second bandwidth part packet are deactivated, the terminal may activate the second bandwidth part in the second bandwidth part packet, so that the second bandwidth part packet is activated. .

In another possible implementation manner, if at least one bandwidth part is activated in the second bandwidth part packet in which the second bandwidth part is located, the terminal may deactivate the activated bandwidth part in the second bandwidth part packet. So that the second bandwidth part packet is deactivated. In this case, the second bandwidth part may be activated or deactivated, which is not limited in the embodiment of the present application.

As an optional embodiment, the downlink bandwidth part in the first bandwidth part packet includes a bandwidth part for receiving a system message, and / or, a bandwidth part for initial access.

Specifically, the first bandwidth partial packet may correspond to a master bandwidth partial packet, and the second bandwidth partial packet may correspond to a slave bandwidth partial packet. In this paper, the grouping of the primary bandwidth part packet across the bandwidth part group to activate / deactivate the secondary bandwidth part group can be divided into the following two cases.

In the first case, when all the bandwidth parts in the secondary bandwidth part group are deactivated, that is, the terminal does not blindly detect the search space corresponding to any bandwidth part in the secondary bandwidth part group, the network device uses the primary bandwidth part group in the The first control signaling sent in the search space corresponding to the activation bandwidth part activates the bandwidth part in the slave bandwidth part packet. For the bandwidth part granularity or the bandwidth part's granularity activation, the network device may use the first control signaling sent in the search space corresponding to the active bandwidth part in the main bandwidth part packet to indicate the second bandwidth part in the slave bandwidth part packet. The terminal may activate a second bandwidth portion in the slave bandwidth portion packet. For activation of the granularity of the bandwidth part packet or the pairing granularity of the bandwidth part packet, the network device can use the first control signaling sent in the search space corresponding to the active bandwidth part of the primary bandwidth part packet to indicate the slave bandwidth part packet, and the terminal can activate the The second bandwidth part in the packet from the bandwidth part.

In the second case, when there is at least one bandwidth part in the secondary bandwidth part group that is active and the terminal is configured in the FDM mode, the terminal can blindly detect the search space corresponding to the active bandwidth part in the secondary bandwidth part group. The search space may be grouped in the main bandwidth portion. In particular, the search space corresponding to the activated bandwidth portion in the bandwidth portion group may share the search space corresponding to the activated bandwidth portion in the main bandwidth portion group. For the bandwidth part granularity or the bandwidth part deactivation of the granularity, the network device can use the indication signaling sent in the search space corresponding to the active bandwidth part in the main bandwidth part packet to indicate the bandwidth part in the slave bandwidth part packet, then the terminal can Deactivate the bandwidth part activated from the bandwidth part packet. In particular, the indicated bandwidth portion may be the same as or different from the bandwidth portion activated from the bandwidth portion packet. For the deactivation of the bandwidth part packet granularity or the bandwidth part packet pairing granularity, the network device can use the indication signaling sent in the search space corresponding to the active bandwidth part of the master bandwidth part packet to indicate the slave bandwidth part packet, and the terminal can be deactivated The bandwidth part activated from the bandwidth part packet.

As an optional embodiment, the first control information is received by the terminal through a first search space corresponding to an activated bandwidth part in the first bandwidth part packet, and the first search space is further used. Receiving second control information at the terminal, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet. The bandwidth part indicated by the second control information is also referred to herein as the third bandwidth part.

Optionally, the payload sizes of the first control information and the second control information are the same.

Specifically, the network device may send the first control information to the terminal through a first search space corresponding to an activated bandwidth part in the first bandwidth part packet, and may also send the user control information to the terminal through the first search space. For the second control information indicating the bandwidth part in the first bandwidth part group, correspondingly, the terminal receives the first control information through the first search space, and may also receive the first control information through the first search space. The second control information is described.

That is, the activated bandwidth part in the first bandwidth part packet corresponds to the first search space. The first search space is also used for the terminal to receive the second control information, and the second control information is used for network equipment to perform self-contained scheduling, that is, the first The bandwidth part in a bandwidth part packet schedules the bandwidth part in the first bandwidth part packet. In other words, the search space used by network devices for cross-bandwidth partial packet activation / deactivation and self-contained scheduling can be the same.

In order to facilitate understanding, the following first introduces the situation of self-contained scheduling.

For the first bandwidth partial grouping scheme, the second control information indicates the first bandwidth partial packet (ie, the main bandwidth partial packet), and the terminal may regard the second control information as the bandwidth partial switching signaling. When the third bandwidth part indicated by the second control information is an uplink bandwidth part, and the third bandwidth part is different from the uplink bandwidth part currently activated by the terminal, the terminal may deactivate the currently activated uplink bandwidth part and activate the first The third bandwidth portion indicated by the second control information; when the third bandwidth portion indicated by the second control information is the downlink bandwidth portion, and the third bandwidth portion is different from the downlink bandwidth portion currently activated by the terminal, the terminal may go to Activate the currently activated downlink bandwidth portion and activate the third bandwidth portion indicated by the second control information.

For the second bandwidth partial grouping scheme, the above-mentioned second control information indicates the first bandwidth partial grouping (ie, the main bandwidth partial grouping), and the terminal may regard the scheduling signaling as the bandwidth partial switching signaling. When the third bandwidth part indicated by the second control information is different from the currently activated downlink bandwidth part, the terminal may deactivate the currently activated downlink bandwidth part and activate the third bandwidth part indicated by the second control information.

It should be understood that, for the second bandwidth part grouping scheme, there is also a case where the second control information may indicate the uplink bandwidth part group corresponding to the first bandwidth part group, the terminal may treat the scheduling signaling as a bandwidth part Switching signaling. When the uplink bandwidth part indicated by the second control information is different from the uplink bandwidth part currently activated by the terminal, the terminal may deactivate the currently activated uplink bandwidth part and activate the uplink bandwidth part indicated by the second control information.

It should be understood that, for different grouping schemes of the bandwidth part, the terminal may activate the corresponding bandwidth part in different ways. The following first introduces the method used in the first bandwidth partial grouping scheme.

As for the bandwidth part granularity or the bandwidth part activation of the granularity, as an optional embodiment, the method further includes: the terminal activating a fourth bandwidth part, where the fourth bandwidth part is in the second bandwidth part grouping. At least one uplink bandwidth portion; wherein the second bandwidth portion is a downlink bandwidth portion, the fourth bandwidth portion is a paired uplink bandwidth portion of the second bandwidth portion, or the fourth bandwidth portion is the first bandwidth portion A pre-configured uplink bandwidth portion in the second bandwidth portion grouping; as an optional embodiment, the method further includes: the terminal activating a fifth bandwidth portion, where the fifth bandwidth portion is the second bandwidth portion grouping. At least one downlink bandwidth portion; wherein the second bandwidth portion is an uplink bandwidth portion, the fifth bandwidth portion is a paired downlink bandwidth portion of the second bandwidth portion, or the fifth bandwidth portion is the first bandwidth portion Pre-configured downlink bandwidth part in the second bandwidth part packet.

When the first control information indicates a second bandwidth partial packet (that is, a packet from the bandwidth partial packet), the terminal may regard the first control information as a bandwidth partial activation signaling in the second bandwidth partial packet. When the second bandwidth part indicated by the first control information is an uplink bandwidth part, the terminal activates the indicated uplink bandwidth part, that is, the second bandwidth part. If the second bandwidth part is not paired with one or more downlink bandwidth parts, the terminal may activate a pre-configured downlink bandwidth part in the second bandwidth part packet (also referred to herein as a first activated downlink bandwidth part), otherwise, The terminal can activate the downlink bandwidth portion paired with it, that is, the fifth bandwidth portion.

Similarly, when the second bandwidth part indicated by the first control information is a downlink bandwidth part, the terminal activates the indicated downlink bandwidth part, that is, the second bandwidth part. If the second bandwidth part is not paired with one or more uplink bandwidth parts, the terminal may activate a pre-configured uplink bandwidth part (also referred to herein as a first activated uplink bandwidth part) in the second bandwidth part packet, and vice versa, The terminal can activate the uplink bandwidth portion that is paired with it, that is, the fourth bandwidth portion.

For activation of the granularity of the bandwidth portion grouping or the pairing granularity of the bandwidth portion grouping, as an optional embodiment, the method further includes: the terminal activating a fourth bandwidth portion, where the fourth bandwidth portion is the second bandwidth portion grouping At least one uplink bandwidth portion; wherein the second bandwidth portion is a pre-configured downlink bandwidth portion, and the fourth bandwidth portion is a pre-configured uplink bandwidth portion; as an optional embodiment, the method further includes: It includes: the terminal activates a fifth bandwidth portion, which is at least one downlink bandwidth portion in the second bandwidth portion packet; wherein the second bandwidth portion is a pre-configured uplink bandwidth portion, the The fifth bandwidth portion is a pre-configured downlink bandwidth portion.

When the first control information indicates a second bandwidth partial packet (that is, a packet from the bandwidth partial packet), the terminal may regard the first control information as a bandwidth partial activation signaling in the second bandwidth partial packet. The terminal activates a pre-configured downlink bandwidth part (also referred to herein as a first activated downlink bandwidth part) and a pre-configured uplink bandwidth part (also referred to herein as a first activated uplink bandwidth part) in the second bandwidth part packet.

For the second bandwidth partial grouping scheme, when the second bandwidth partial group indicated by the first control information is an uplink bandwidth partial packet, the terminal may regard the first control information as a bandwidth partial activation signal in the second bandwidth partial packet. make. For the granularity of the bandwidth part or the granularity activation of the bandwidth part, the terminal may activate the uplink bandwidth part indicated by the first control information, that is, the second bandwidth part. If the second bandwidth part is not paired with one or more downlink bandwidth parts, the terminal may activate the first activated downlink carrier bandwidth part in the downlink bandwidth part packet corresponding to the second bandwidth part packet, otherwise, the terminal may activate the The downlink bandwidth part of the downlink bandwidth part packet corresponding to the second bandwidth part packet that is paired with the second bandwidth part. For activation of the granularity of the bandwidth part packet or the pairing granularity of the bandwidth part packet, the terminal may activate the pre-configured uplink bandwidth part (also referred to herein as the first activated uplink bandwidth part) in the second bandwidth part packet, that is, the second bandwidth part, The terminal may further activate a pre-configured downlink bandwidth portion in the second bandwidth portion packet (also referred to herein as a first activated downlink bandwidth portion).

Similarly, when the second bandwidth part packet indicated by the first control information is a downlink bandwidth part packet, the terminal may regard the first control information as the bandwidth part activation signaling in the second bandwidth part packet. For the granularity of the bandwidth part or the activation of the granularity by the bandwidth part, the terminal may activate the downlink bandwidth part indicated by the first control information, that is, the second bandwidth part. If the second bandwidth part is not paired with one or more uplink bandwidth parts, the terminal may activate the first activated uplink carrier bandwidth part in the uplink bandwidth part packet corresponding to the second bandwidth part packet, otherwise, the terminal may activate the The uplink bandwidth part of the uplink bandwidth part packet corresponding to the second bandwidth part packet that is paired with the second bandwidth part. For the activation of the bandwidth part packet granularity or the bandwidth part packet pairing granularity activation, the second bandwidth part packet is an uplink bandwidth part packet, and the terminal may activate a pre-configured uplink bandwidth part (also referred to as One activates the uplink bandwidth part), that is, the second bandwidth part, and the terminal can further activate the pre-configured downlink bandwidth part in the downlink bandwidth part packet corresponding to the second bandwidth part packet (also referred to herein as the first activated downlink bandwidth part), Alternatively, the second bandwidth part packet is a downlink bandwidth part packet, and the terminal may activate a pre-configured downlink bandwidth part (also referred to herein as a first activated downlink bandwidth part) in the second bandwidth part packet, that is, a second bandwidth part , The terminal may further activate a pre-configured uplink bandwidth part in the uplink bandwidth part packet corresponding to the second bandwidth part packet (also referred to herein as a first activated uplink bandwidth part).

Further, when the terminal is configured in the FDM mode, the terminal may blindly detect the search space corresponding to the activated bandwidth portion in the second bandwidth portion packet; when the terminal is configured in the TDM mode, the terminal may not blindly detect the search space. The search space corresponding to the activated bandwidth part in the second bandwidth part packet.

As an optional embodiment, the method further includes:

Receiving, by the terminal, third control information through the first bandwidth part, where the third control information is used to indicate any bandwidth part in the second bandwidth part packet;

The terminal deactivates all bandwidth parts in the second bandwidth part packet according to the third control information.

As an optional embodiment, the first control information is further used to instruct activation of a bandwidth part of the second bandwidth part packet, and the third control information is further used to instruct deactivation of the second bandwidth part packet In the bandwidth section.

As an optional embodiment, a value of a first bit field of the first control information is a first value, and a value of the first bit field of the third control information is a second value. Optionally, the format of the first control information and the third control information are the same.

Specifically, the network device may instruct the terminal to perform an activation or deactivation operation by using a value of a first bit field in the control information, where the first bit field may include one or more bits. The network device and the terminal may agree that the value of the first bit field corresponding to the activation operation is the first value, and the value of the first bit field corresponding to the deactivation operation is the second value. Therefore, in the embodiment of the present application, the foregoing The value of the first bit field of the first control information is a first value, and the value of the first bit field of the third control information is a second value. For example, the first bit domain is a K-bit frequency domain resource allocation domain, the first value is K bits t1, and the second value is K bits t2. In particular, t1 is equal to 0 and t2 is equal to 1. For another example, the first bit domain is a K-bit frequency domain resource allocation domain, the first value is K-bit t1 or K-bit t2, and the second value is another value. In particular, t1 is equal to 0 and t2 It is equal to 1, but it is not limited in the embodiment of the present application.

As an optional embodiment, the first control information carries an index of the second bandwidth part packet and / or an index of the second bandwidth part.

Specifically, the network device may indicate the second bandwidth portion in the second bandwidth portion packet by carrying an index in the first control information. Therefore, the first control information may also carry an index of the second bandwidth portion packet and / or an index of the second bandwidth portion. Since the index of the bandwidth partial grouping can be configured in a variety of different ways, for different situations, detailed explanations are provided below.

When the design of the bandwidth segment grouping is the first bandwidth segment grouping scheme, the N bandwidth segments configured for the terminal can be configured or represented as G bandwidth segment packets, and the network device can pass ceil (log ₂ (G)) The bit information indicates the index of the bandwidth part packet. Where ceil () means round up. As shown in Table 1, the terminal is configured with a first bandwidth part packet and a second bandwidth part packet for a total of two bandwidth part packets, and the indexes of the first bandwidth part packet and the second bandwidth part packet are 0 and 1, respectively. Further, the network device may also indicate an index of a packet of a bandwidth portion by using the ceil (log ₂ (G)) bit information and a padding bit greater than or equal to 1 bit.

Table 1

带宽部分分组Bandwidth Partitioning	索引index
第一带宽部分分组First bandwidth part packet	00
第二带宽部分分组Second bandwidth part packet	11

When the design of the bandwidth segment grouping is the second bandwidth segment grouping scheme, the N bandwidth segments configured for the terminal may be configured or represented as G bandwidth segment packets, where the G bandwidth segment packet includes G _UL Upstream bandwidth partial packets and _GDL downlink bandwidth partial packets. The network device can number the bandwidth part groupings by any of the following two bandwidth part grouping designs.

In the bandwidth part packet numbering design 1, the index of the bandwidth part packet can be indicated by ceil (log ₂ (G)) bit information. As shown in Table 2, the terminal is configured with uplink bandwidth part group A and uplink bandwidth part group B, downlink bandwidth part group C and downlink bandwidth part group D. There are four bandwidth part groups. When the terminal's bandwidth part group is numbered, the uplink The indexes of the bandwidth part packet A, the uplink bandwidth part packet B, the downlink bandwidth part packet C, and the downlink bandwidth part packet D may be 00, 01, 10, and 11 respectively. Further, the network device may also indicate an index of a packet of a bandwidth portion by using the ceil (log ₂ (G)) bit information and a padding bit greater than or equal to 1 bit.

Table 2

带宽部分分组Bandwidth Partitioning	索引index
上行带宽部分分组AUpstream bandwidth part packet A	0000
上行带宽部分分组BUpstream bandwidth part packet B	0101
下行带宽部分分组CDownlink bandwidth part group C	1010
下行带宽部分分组DDownstream bandwidth part packet D	1111

In Bandwidth Part Numbering Design II, the index of the upstream bandwidth part packet can be indicated by ceil (log ₂ (G _UL )) bit information, and the index of the downstream bandwidth part packet can be indicated by ceil (log ₂ (G _UL )) bit information . As shown in Table 3, the terminal is configured with uplink bandwidth part group A and uplink bandwidth part group B, downlink bandwidth part group C and downlink bandwidth part group D. There are four bandwidth part groups. The indexes of the bandwidth part packet A and the uplink bandwidth part packet B are 0 and 1, respectively, and the indexes of the downlink bandwidth part packet C and the downlink bandwidth part packet D are 0 and 1, respectively. Further, the network device may also use the ceil (log ₂ (G _UL )) bit information and a padding bit greater than or equal to 1 to indicate the index of the uplink bandwidth partial packet; the network device may also use the ceil (log ₂ (G _DL )) ) Bits of information and 1-bit padding bits indicate the index of the downstream bandwidth partial packet.

table 3

带宽部分分组Bandwidth Partitioning	索引index
上行带宽部分分组AUpstream bandwidth part packet A	00
上行带宽部分分组BUpstream bandwidth part packet B	11
下行带宽部分分组CDownlink bandwidth part group C	00
下行带宽部分分组DDownstream bandwidth part packet D	11

As an optional embodiment, after the activating the second bandwidth part in the second bandwidth part packet, the method further includes: the terminal searching through a second search corresponding to the second bandwidth part Receiving fourth control information in space; wherein the second bandwidth portion is a downlink bandwidth portion, and the fourth control information is used to indicate a sixth bandwidth portion in the second bandwidth portion packet.

Specifically, if the second bandwidth part is a downlink bandwidth part, after the terminal activates the second bandwidth part, the terminal may further receive fourth control information through a second search space corresponding to the second bandwidth part, and the fourth control The information is used for self-contained scheduling, and indicates a sixth bandwidth part in the second bandwidth part packet, and the sixth bandwidth part is an uplink bandwidth part or a downlink bandwidth part.

As an optional embodiment, after the activating the second bandwidth portion in the second bandwidth portion packet, the method further includes: receiving, by the terminal, a third search space corresponding to a seventh bandwidth portion. Fifth control information, where the fifth control information is used to indicate an eighth bandwidth portion in the second bandwidth portion packet, where the eighth bandwidth portion is an uplink bandwidth portion or a downlink bandwidth portion; wherein the second bandwidth portion Is the uplink bandwidth portion, the seventh bandwidth portion is the paired downlink bandwidth portion of the second bandwidth portion, or the seventh bandwidth portion is a pre-configured downlink bandwidth portion in the second bandwidth portion packet.

Specifically, if the second bandwidth part is an uplink bandwidth part, after the terminal activates the second bandwidth part, the terminal may also receive the first bandwidth part through a downlink bandwidth part paired with the second bandwidth part or a pre-configured downlink bandwidth part. Five control information, which is used for self-contained scheduling, and indicates the eighth bandwidth part in the second bandwidth part packet, and the eighth bandwidth part is an uplink bandwidth part or a downlink bandwidth part.

To facilitate understanding, the deactivation operation in the embodiment of the present application is described in detail below.

In a possible implementation manner, the network device sends control information to the terminal through the bandwidth part of the first bandwidth part packet (that is, the main bandwidth part packet), and the control information is used to indicate the second bandwidth part packet (that is, the slave bandwidth part packet). ), The terminal receives the first control information, and deactivates all activated bandwidth parts in the second bandwidth part packet. Optionally, the first bandwidth part packet and the second bandwidth part packet each include an uplink bandwidth part and a downlink bandwidth part.

Specifically, the terminal device may implement deactivation of the second bandwidth part according to the current state of the second bandwidth part indicated by the first control information. In the embodiment of the present application, assuming that at least one bandwidth part is active in the second bandwidth part group where the second bandwidth part is located, the terminal may deactivate the active bandwidth part so that the second bandwidth part is grouped. Was deactivated.

As an optional embodiment, the control information carries an index of the second bandwidth partial packet.

For the first bandwidth partial grouping scheme, when the index indicates the second bandwidth partial grouping, the terminal may regard the control information as the bandwidth partial deactivation signaling in the second bandwidth partial grouping. Optionally, the control information may also indicate a bandwidth part in the second bandwidth part, and the bandwidth part indicated by the control information and the active bandwidth part in the second bandwidth part group may be the same or different. Embodiments of the present application This is not limited. The terminal deactivates the activated bandwidth part in the second bandwidth part packet according to the control information.

For the second bandwidth partial grouping scheme, when the second bandwidth partial group indicated by the index is an uplink bandwidth partial packet, the terminal may regard the control information as the bandwidth partial deactivation signaling in the second bandwidth partial packet. Optionally, the control information may further indicate an uplink bandwidth portion in the second bandwidth portion, and the uplink bandwidth portion indicated by the control information and the activated uplink bandwidth portion in the second bandwidth portion packet may be the same or different. The terminal may deactivate an activated uplink bandwidth portion in the second bandwidth portion packet. Further, the terminal may deactivate an activated downlink bandwidth portion in a downlink bandwidth portion packet paired with the second bandwidth portion packet.

Similarly, when the second bandwidth part packet indicated by the index is a downlink bandwidth part packet, the terminal may regard the control information as the bandwidth part deactivation signaling in the second bandwidth part packet. Optionally, the control information may also indicate a downlink bandwidth portion of the second bandwidth portion, and the downlink bandwidth portion indicated by the control information and the activated downlink bandwidth portion in the second bandwidth portion packet may be the same or different. The terminal may deactivate an activated downlink bandwidth portion in the second bandwidth portion packet. Further, the terminal may deactivate an activated uplink bandwidth part in an uplink bandwidth part packet paired with the second bandwidth part packet.

As an optional embodiment, the control information may not include a resource allocation domain, or the resource allocation domain in the control information is invalid. The terminal ignores the resource allocation field in the control information.

In another possible implementation manner, when at least one bandwidth part is active in the second bandwidth part packet (that is, from the bandwidth part packet), and the second bandwidth part packet is a downlink bandwidth part packet, the network device can pass The bandwidth part of the second bandwidth part packet sends control information indicating the first bandwidth part packet (ie, the main bandwidth part packet), and the terminal can deactivate the activated bandwidth part in the second bandwidth part packet according to the control information.

As an optional embodiment, the above control information carries an index of the first bandwidth partial packet.

For the first bandwidth partial grouping scheme, when the index indicates the first bandwidth partial grouping, the terminal may regard the control information as the bandwidth partial deactivation signaling in the second bandwidth partial grouping. Optionally, the control information may further indicate a bandwidth part in the first bandwidth part, and the bandwidth part indicated by the control information and the activated bandwidth part in the first bandwidth part may be the same or different. The terminal may deactivate the activated bandwidth part in the second bandwidth part packet.

For the second bandwidth part grouping scheme, when the index indicates the first bandwidth part grouping, the terminal may regard the control information as the bandwidth part deactivation signaling in the second bandwidth part grouping. Optionally, the control information may also indicate a downlink bandwidth portion in the first bandwidth portion, and the downlink bandwidth portion indicated by the control information and the active bandwidth portion in the first bandwidth portion packet may be the same or different. The terminal may deactivate an activated downlink bandwidth portion in the second bandwidth portion packet. Further, the terminal may deactivate an activated uplink bandwidth portion in an uplink bandwidth portion corresponding to the second bandwidth portion packet.

Similarly, when the index indicates an uplink bandwidth partial packet corresponding to the first bandwidth partial packet, the terminal may regard the control information as deactivation signaling of the bandwidth portion in the second bandwidth partial packet. Optionally, the control information may further indicate an uplink bandwidth portion in the first bandwidth portion, and the uplink bandwidth portion indicated by the control information and an activated uplink bandwidth portion in an uplink bandwidth portion packet corresponding to the first bandwidth portion packet may be the same. It can also be different. The terminal may deactivate an activated downlink bandwidth portion in the second bandwidth portion packet. Further, the terminal may deactivate an activated uplink bandwidth portion in an uplink bandwidth portion packet corresponding to the second bandwidth portion packet.

FIG. 3 is an exemplary flowchart of another communication method 300 according to an embodiment of the present application. It should be understood that the network device in the method shown in FIG. 3 may correspond to the network device in the system 100 shown in FIG. 1, and the terminal may correspond to any one of the terminals shown in FIG. 1.

S310. The network device determines sixth control information, where the sixth control information is used to indicate a tenth bandwidth part in the fourth bandwidth part group, and an eleventh bandwidth part also exists in the fourth bandwidth part group. The eleventh bandwidth part is active;

S320. The network device sends the sixth control information through a ninth bandwidth part of the third bandwidth part packet, and the third bandwidth part packet and the fourth bandwidth part packet include an uplink bandwidth part and a downlink bandwidth part, respectively. ; Correspondingly, the terminal receives the sixth control information through a ninth bandwidth part in the third bandwidth part packet;

S330. The terminal deactivates the eleventh bandwidth portion and activates the tenth bandwidth portion.

Specifically, the ninth bandwidth part belongs to the third bandwidth part group, and the tenth bandwidth part and the eleventh bandwidth part belong to the fourth bandwidth part group. The network device can send the sixth control information to the terminal through the ninth bandwidth part, indicating the tenth The bandwidth part, in which the tenth bandwidth part is deactivated, the ninth bandwidth part and the eleventh bandwidth part are activated, the terminal only detects control information on the ninth bandwidth part, and after receiving the sixth control information The terminal may activate the tenth bandwidth part and deactivate the eleventh bandwidth part while keeping the ninth bandwidth part activated, that is, switching the bandwidth part in the fourth bandwidth part group.

It should be understood that the ninth bandwidth part is a downlink bandwidth part, and the tenth bandwidth part and the eleventh bandwidth part may be an uplink bandwidth part or a downlink bandwidth part, which is not limited in the embodiment of the present application. In this application, the network device can directly or indirectly activate the tenth bandwidth part through the sixth control information. The following describes in detail two different bandwidth part grouping schemes.

For the first bandwidth part grouping scheme, when the eleventh bandwidth part is an uplink bandwidth part, the tenth bandwidth part may be an uplink bandwidth part; when the eleventh bandwidth part is a downlink bandwidth part, the tenth bandwidth part It can be the downlink bandwidth part.

For the second bandwidth part grouping scheme, when the fourth bandwidth part is grouped as an uplink bandwidth part, the tenth bandwidth part and the eleventh bandwidth part are both uplink bandwidth parts, and when the fourth bandwidth part is grouped as a downlink bandwidth part When grouping, the tenth bandwidth part and the eleventh bandwidth part are both downlink bandwidth parts.

It should be understood that the third bandwidth partial grouping may be a primary bandwidth partial grouping, and the fourth bandwidth partial grouping may be a slave bandwidth partial grouping, but this embodiment of the present application does not limit this. As an optional embodiment, the ninth bandwidth part, the tenth bandwidth part, and the eleventh bandwidth part are all downlink bandwidth parts.

As an optional embodiment, after the terminal deactivates the eleventh bandwidth portion and activates the tenth bandwidth portion, the method further includes: the terminal receives control information through the ninth bandwidth portion Or, the terminal receives control information through the tenth bandwidth part.

It should be understood that when continuing to use the ninth bandwidth part to receive control information, it may be defined that the third bandwidth part where the ninth bandwidth part is located is grouped into a main bandwidth part group, that is, the terminal receives a system message on the ninth bandwidth part. In this way, it is beneficial to share system messages between different terminals and reduce the extra overhead caused by sending multiple system messages on the network side. In contrast, adopting the tenth bandwidth part to receive the control information can guarantee the self-contained transmission characteristics of the bandwidth part packet, which is beneficial to the terminal's energy saving.

As an optional embodiment, the sixth control information includes a resource allocation domain, and the resource allocation domain is used to instruct the terminal to receive control information through the tenth bandwidth portion.

As an optional embodiment, the sixth control information carries an index of the fourth bandwidth portion packet and / or an index of the tenth bandwidth portion.

Specifically, the network device may display the tenth bandwidth portion in the fourth bandwidth portion packet.

Optionally, the above-mentioned sixth control information may also be a handover command of a main bandwidth partial packet. The following describes in detail two different bandwidth partial grouping schemes.

For the first bandwidth partial grouping scheme, when the index indicates a fourth bandwidth partial grouping (that is, grouping from a bandwidth partial group), the terminal may treat the sixth control information as a handover signaling for the main bandwidth partial grouping. The terminal may switch the third bandwidth part packet to the indicated fourth bandwidth part packet, and blindly search the search space on the active bandwidth part in the new main bandwidth part packet. When the indicated bandwidth part is an uplink bandwidth part, the active bandwidth part may be the first active downlink bandwidth part in the downlink bandwidth part packet; when the indicated bandwidth part is a downlink bandwidth part, the active bandwidth part may be the first The downlink bandwidth portion indicated by the six control information may also be the first activated downlink bandwidth portion in the downlink bandwidth portion packet.

For the second bandwidth partial grouping scheme, when the index indicates the fourth bandwidth partial grouping (that is, grouping from the bandwidth partial group), and the fourth bandwidth partial grouping is an uplink bandwidth partial grouping, the terminal may regard the sixth control information as the main Signaling of handover of bandwidth partial packets. The terminal may switch the third bandwidth part packet to a downlink bandwidth part packet corresponding to the indicated fourth bandwidth part packet (uplink bandwidth part packet), and perform blind detection search on the active bandwidth part in the new main downlink bandwidth part packet. Space, the active bandwidth part may be a first active downlink bandwidth part in the downlink bandwidth part packet.

Similarly, when the index points to the fourth bandwidth segment packet (that is, the packet from the bandwidth segment), and the fourth bandwidth segment packet is a downlink bandwidth segment packet, the terminal may regard the sixth control information as the handover information of the main bandwidth segment packet. make. The terminal may switch the third bandwidth part packet to the indicated fourth bandwidth part packet, and blindly search the search space on the active bandwidth part in the new main downlink bandwidth part packet, which may be the sixth control. The downlink bandwidth portion indicated by the information may also be the first activated downlink bandwidth portion in the downlink bandwidth portion packet.

As an optional embodiment, the sixth control information is received by the terminal through a fourth search space corresponding to an activated bandwidth part in the third bandwidth part packet, where the fourth search space is also used The terminal receives seventh control information, where the seventh control information is used to indicate a twelfth bandwidth portion in the third bandwidth portion packet. Optionally, the payloads of the sixth control information and the seventh control information are the same.

Specifically, the network device may send the foregoing sixth control information to the terminal through a fourth search space corresponding to an activated bandwidth portion in the third bandwidth portion packet, and may further send the terminal the Seventh control information indicating a bandwidth part in the third bandwidth part group; correspondingly, the terminal may receive the sixth control information sent by the network device through the fourth search space, and may also receive the sixth control information through the first search space. Four search spaces receive the seventh control information sent by the network device. In the embodiment of the present application, the sixth control information is used for switching the bandwidth part, and the seventh control information is used for self-contained scheduling. Therefore, in other words, the network device performs the switching and self-containment of the bandwidth part. The search space used for scheduling can be the same.

In this way, it is possible to realize simple switching without realizing the complexity of blindly detecting the downlink control channel of the terminal while realizing the switching of the bandwidth part, thereby improving the system performance.

The above description includes the following two possible implementation methods: the first is that the terminal is configured in the TDM mode, and at this time, it is not restricted whether the sixth control information includes a resource allocation domain; the second is that the terminal is configured in the FDM mode Or in TDM mode + FDM mode, at this time, the terminal can distinguish whether to perform a deactivation operation of the slave bandwidth part packet or a switch operation of the master bandwidth part packet by whether the sixth control information includes a resource allocation domain, but this application The embodiment is not limited thereto.

In the communication method of the embodiment of the present application, the search space corresponding to the active bandwidth part in the main bandwidth part packet is used by the network device to indicate the carrier bandwidth part in the subcarrier bandwidth part packet, thereby completing the switching of the main bandwidth part packet, which can be enabled when At the same time in the TDM mode, the complexity of the terminal blindly detecting the downlink control channel is not increased, thereby improving the system performance.

This application also provides a method for configuring the FDM mode and the TDM mode. First, define the following basic assumptions:

(1) The TDM mode is a lower-capacity working mode, that is, all terminals support the TDM mode.

(2) The FDM mode is a high-capacity working mode, that is, only some terminals can support the FDM mode.

Of course, the definition can be reversed, that is, the FDM mode is a lower-capacity working mode, and the TDM mode is a higher-capacity working mode, which is not limited in the embodiment of the present application.

Therefore, the lower mode is referred to as the first mode and the higher mode is referred to as the second mode. It should be understood that a terminal supporting the second mode must be able to support the first mode.

Based on the above assumptions, the terminal can report its capabilities to the network device, that is, whether the terminal supports the first mode or the second mode. The network device can configure the working mode of the terminal according to the reporting capability of the terminal. Specifically, if the terminal reports its ability to support the first mode, the network device can only configure the terminal in the first mode; if the terminal reports its ability to support the second mode, the network device can configure the terminal in the first mode. One mode, and a second mode can also be configured for the terminal.

In this way, the network device can be flexibly configured according to the capabilities of the terminal, which avoids a situation where the network device configures a higher working mode for the terminal but the terminal cannot support it, and improves system stability.

The communication method examples provided in the present application are described in detail above. It can be understood that, in order to implement the above functions, the terminal and the network device include a hardware structure and / or a software module corresponding to each function. Those skilled in the art should easily realize that, with reference to the units and algorithm steps of the various examples described in the embodiments disclosed herein, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is performed by hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

FIG. 4 is a schematic structural diagram of a device 400 provided in the present application. The apparatus 400 includes a receiving unit 410 and a processing unit 420.

The receiving unit 410 is configured to receive first control information through a first bandwidth portion in a first bandwidth portion packet, where the first control information is used to indicate a second bandwidth portion in a second bandwidth portion packet, and the first bandwidth The partial packet and the second bandwidth partial packet each include an uplink bandwidth part and a downlink bandwidth part;

The processing unit 420 is configured to activate the second bandwidth part in the second bandwidth part packet according to the first control information, where the second bandwidth part is an uplink bandwidth part or a downlink bandwidth part.

Optionally, the downlink bandwidth part in the first bandwidth part packet includes a bandwidth part for receiving a system message, and / or, a bandwidth part for initial access.

Optionally, the first control information is received by the device through a first search space corresponding to an activated bandwidth portion of the first bandwidth portion grouping, where the first search space is further used by the device to receive Second control information, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet.

Optionally, the processing unit 420 is further configured to: activate at least one uplink bandwidth portion in the second bandwidth portion packet; wherein the second bandwidth portion is a downlink bandwidth portion, and the at least one uplink bandwidth portion is The paired uplink bandwidth portion of the second bandwidth portion, or the at least one uplink bandwidth portion is a pre-configured uplink bandwidth portion in the second bandwidth portion packet.

Optionally, the processing unit 420 is further configured to activate at least one downlink bandwidth part in the second bandwidth part packet; wherein the second bandwidth part is an uplink bandwidth part, and the at least one downlink bandwidth part is The paired downlink bandwidth portion of the second bandwidth portion, or the at least one downlink bandwidth portion is a pre-configured downlink bandwidth portion in the second bandwidth portion packet.

Optionally, the receiving unit 410 is further configured to receive third control information through the first bandwidth part, where the third control information is used to indicate any bandwidth part in the second bandwidth part packet; The processing unit 420 is further configured to: deactivate all bandwidth parts in the second bandwidth part packet according to the third control information.

Optionally, the first control information is further used for instructing activation of a bandwidth part in the second bandwidth part packet, and the third control information is also used for instructing deactivation of a bandwidth part in the second bandwidth part packet .

Optionally, a value of a first bit field of the first control information is a first value, and a value of the first bit field of the third control information is a second value.

Optionally, the first control information carries an index of the second bandwidth part packet and / or an index of the second bandwidth part.

The apparatus 400 may be a communication device (for example, a terminal) or a chip in the communication device. When the communication device is a communication device, the processing unit may be a processor, the sending unit and the receiving unit may be transceivers; the communication device may further include a storage unit, the storage unit may be a memory; and the storage unit is used for storing An instruction, and the processing unit executes the instruction stored in the storage unit, so that the communication device executes the foregoing method. When the communication device is a chip in a communication device, the processing unit may be a processor, the sending unit and the receiving unit may be input / output interfaces, pins or circuits, etc .; the processing unit executes instructions stored in the storage unit, In order for the communication device to execute the corresponding steps performed by the terminal, the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit (outside the chip) in the communication device ( (E.g., read-only memory, random access memory, etc.)

Those skilled in the art can clearly understand that when the device 400 is a terminal, the steps performed by the device 400 and the corresponding beneficial effects can refer to the related description of the terminal in FIG. 2.

FIG. 5 is a schematic structural diagram of a device 500 provided in the present application. The apparatus 500 includes a processing unit 510 and a sending unit 520.

A processing unit 510, configured to determine first control information, where the first control information is used to indicate a second bandwidth portion in a second bandwidth portion packet;

A sending unit 520, configured to send the first control information to a terminal through a first bandwidth portion in a first bandwidth portion packet;

The first bandwidth part packet and the second bandwidth part packet each include an uplink bandwidth part and a downlink bandwidth part, and the second bandwidth part is an uplink bandwidth part or a downlink bandwidth part.

Optionally, the first control information is received by the terminal through a first search space corresponding to an activated bandwidth part of the first bandwidth part packet, wherein the first search space is further used for receiving by the terminal. Second control information, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet.

Optionally, the sending unit 520 is further configured to send third control information to the terminal through the first bandwidth portion, where the third control information is used to indicate any one of the second bandwidth portion packets. Bandwidth part.

The apparatus 500 may be a communication device (for example, a network device) or a chip in the communication device. When the communication device is a communication device, the processing unit may be a processor, the sending unit and the receiving unit may be transceivers; the communication device may further include a storage unit, the storage unit may be a memory; and the storage unit is used for storing An instruction, and the processing unit executes the instruction stored in the storage unit, so that the communication device executes the foregoing method. When the communication device is a chip in a communication device, the processing unit may be a processor, the sending unit and the receiving unit may be input / output interfaces, pins or circuits, etc .; the processing unit executes instructions stored in the storage unit, In order for the communication device to execute the corresponding steps performed by the network device, the storage unit may be a storage unit (for example, a register, a cache, etc.) in the chip, or a storage unit located outside the chip in the communication device. (E.g., read-only memory, random access memory, etc.)

Those skilled in the art can clearly understand that, when the apparatus 500 is a network device, the steps performed by the apparatus 500 and the corresponding beneficial effects can refer to the related description of the network device in FIG. 2.

It should be understood that the division of the foregoing units is only a functional division, and other division methods may be available in actual implementation.

Those skilled in the art can clearly understand that the specific working processes of the devices and units described above and the technical effects generated by the execution steps can refer to the descriptions in the corresponding method embodiments described above. For the sake of brevity, they will not be repeated here. .

The above communication device may be a chip, and the processing unit may be implemented by hardware or software. When implemented by hardware, the processing unit may be a logic circuit, an integrated circuit, etc .; when implemented by software, the processing unit It may be a general-purpose processor, which is implemented by reading software codes stored in a storage unit, which may be integrated in the processor, or may be located outside the processor and exist independently.

The device provided in this application is further described below by using the above device as a terminal or a network device as an example.

FIG. 6 is a schematic structural diagram of a terminal 10 provided by the present application. For convenience of explanation, FIG. 6 shows only the main components of the terminal. As shown in FIG. 6, the terminal 10 includes a processor, a memory, a control circuit, an antenna, and an input / output device.

The processor is mainly used to process the communication protocol and communication data, and control the entire terminal, execute a software program, and process the data of the software program, for example, to support the terminal to execute the resource allocation method or the communication method described in the embodiment action. The memory is mainly used for storing software programs and data. The control circuit is mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals. The control circuit and the antenna can also be called a transceiver, which is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input / output devices, such as a touch screen, a display screen, and a keyboard, are mainly used to receive data input by the user and output data to the user.

When the terminal is turned on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When the data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. After the radio frequency circuit processes the baseband signal, the radio frequency signal is sent out in the form of electromagnetic waves through the antenna. When data is sent to the terminal, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

Those skilled in the art can understand that, for ease of description, FIG. 6 shows only one memory and a processor. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, which is not limited in the embodiment of the present application.

As an optional implementation manner, the processor may include a baseband processor and a central processor. The baseband processor is mainly used to process communication protocols and communication data, and the central processor is mainly used to control the entire terminal and execute software. Programs that process data from software programs. The processor in FIG. 6 integrates the functions of the baseband processor and the central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, which are interconnected through technologies such as a bus. Those skilled in the art can understand that the terminal may include multiple baseband processors to adapt to different network standards, the terminal may include multiple central processors to enhance its processing capabilities, and various components of the terminal may be connected through various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data may be built in the processor or stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

Exemplarily, in the embodiment of the present application, the antenna and the control circuit having a transmitting and receiving function may be regarded as the transmitting and receiving unit 101 of the terminal 10, and the processor having the processing function may be regarded as the processing unit 102 of the terminal 10. As shown in FIG. 6, the terminal 10 includes a transceiver unit 101 and a processing unit 102. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, and the like. Optionally, a device used to implement the receiving function in the transceiver unit 101 may be regarded as a receiving unit, and a device used to implement the transmitting function in the transceiver unit 101 may be regarded as a transmitting unit, that is, the transceiver unit 101 includes a receiving unit and a transmitting unit. Exemplarily, the receiving unit may also be called a receiver, a receiver, a receiving circuit, and the like, and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit and the like.

The terminal shown in FIG. 6 can perform various actions performed by the terminal in the foregoing method. Here, in order to avoid redundant description, detailed descriptions thereof are omitted.

FIG. 7 is a schematic structural diagram of a network device provided in this application. The network device may be, for example, a base station. As shown in FIG. 7, the base station may be applied to the communication system shown in FIG. 1 to perform functions of a network device in the foregoing method embodiment. The base station 20 may include one or more radio frequency units, such as a remote radio unit (RRU) 201 and one or more baseband units (BBU) (also referred to as a digital unit (DU) ) 202. The RRU 201 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and may include at least one antenna 2011 and a radio frequency unit 2012. The RRU 201 is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals to baseband signals, for example, for sending PDCCH and / or PDSCH in the foregoing method embodiments. The BBU 202 is mainly used for baseband processing and controlling base stations. The RRU 201 and the BBU 202 may be physically located together or physically separated, that is, a distributed base station.

The BBU 202 is a control center of a base station, and may also be referred to as a processing unit, which is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and so on. For example, the BBU (Processing Unit) 202 may be used to control a base station to execute an operation procedure on a network device in the foregoing method embodiment.

In one embodiment, the BBU 202 may be composed of one or more boards, and multiple boards may jointly support a single access indication wireless access network (such as an LTE network), or may separately support different access systems. Wireless access network (such as LTE network, 5G network or other networks). The BBU 202 further includes a memory 2021 and a processor 2022. The memory 2021 is used to store necessary instructions and data. For example, the memory 2021 stores the QCL information or the TCI status in the foregoing method embodiment. The processor 2022 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment. The memory 2021 and the processor 2022 may serve one or more single boards. That is, the memory and processor can be set separately on each board. It may also be that multiple boards share the same memory and processor. In addition, the necessary circuits can be set on each board.

The present application also provides a communication system including one or more of the aforementioned network devices, and, one or more terminals.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the foregoing method embodiment may be completed by using an integrated logic circuit of hardware in a processor or an instruction in a form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable processors. Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed and completed by using a combination of hardware and software modules in the decoding processor. A software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), or Erase programmable read-only memory (EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM ) And direct memory bus random access memory (direct RAMbus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

The present application also provides a computer-readable medium on which a computer program is stored. When the computer program is executed by a computer, the functions of any one of the foregoing method embodiments are implemented.

The present application also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it 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 the computer instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are wholly or partially generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, a computer, a server, or a data center. Transmission by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to another website site, computer, server, or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server, a data center, or the like that includes one or more available medium integration. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high density digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (solid state disk) SSD)) and so on.

It should be understood that "an embodiment" mentioned throughout the specification means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, the various embodiments do not necessarily refer to the same embodiment throughout the specification. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the size of the sequence numbers of the above processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic. The implementation process constitutes any limitation.

It should also be understood that in this application, "when", "if" and "if" all mean that the UE or the base station will make corresponding processing in some objective circumstances, which is not a time limit and does not require the UE Or the base station must have a judgment action when it is implemented, which does not mean that there are other restrictions.

In addition, the terms "system" and "network" are often used interchangeably herein. The term "and / or" in this document is only a kind of association relationship describing related objects, which means that there can be three kinds of relationships, for example, A and / or B can mean: A exists alone, A and B exist simultaneously, and exists alone B these three cases.

As used herein, the term "at least one of" or "at least one of" means all or any combination of the listed items, for example, "at least one of A, B, and C", It can be expressed that there are six cases of A alone, B alone, C alone, A and B, B and C, and A, B, and C.

It should be understood that, in the embodiments of the present application, “B corresponding to A” means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B based on A does not mean determining B based solely on A, but also determining B based on A and / or other information.

Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the hardware and software, Interchangeability. In the above description, the composition and steps of each example have been described generally in terms of functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Through the description of the foregoing embodiments, those skilled in the art can clearly understand that the present application can be implemented by hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limited to: computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage devices, or can be used to carry or store instructions or data structures Expected program code and any other medium that can be accessed by a computer. Also. Any connection is properly a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable , Fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the media. As used in this application, disks and discs include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy discs, and Blu-ray discs, where discs typically use magnetism to copy data, and Discs use lasers to copy data. The above combination should also be included in the protection scope of the computer-readable medium.

In short, the above is only a preferred embodiment of the technical solution of the present application, and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, or improvement made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

A communication method, comprising:

The terminal receives first control information through a first bandwidth part in a first bandwidth part packet, where the first control information is used to indicate a second bandwidth part in a second bandwidth part packet, where the first bandwidth part packet and the The second bandwidth part packet includes an uplink bandwidth part and a downlink bandwidth part;

The terminal activates the second bandwidth portion in the second bandwidth portion packet according to the first control information, and the second bandwidth portion is an uplink bandwidth portion or a downlink bandwidth portion.
The method according to claim 1, wherein the downlink bandwidth portion in the first bandwidth portion packet includes a bandwidth portion for receiving a system message, and / or, a bandwidth portion for initial access.
The method according to claim 1 or 2, wherein the first control information is received by the terminal through a first search space corresponding to an activated bandwidth portion of the first bandwidth portion grouping, wherein the The first search space is further used by the terminal to receive second control information, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet.
The method according to any one of claims 1 to 3, further comprising:

Activating, by the terminal, at least one uplink bandwidth portion in the second bandwidth portion packet;

The second bandwidth portion is a downlink bandwidth portion, the at least one uplink bandwidth portion is a paired uplink bandwidth portion of the second bandwidth portion, or the at least one uplink bandwidth portion is a packet of the second bandwidth portion. The pre-configured upstream bandwidth portion of the.
The method according to any one of claims 1 to 3, further comprising:

Activating, by the terminal, at least one downlink bandwidth portion in the second bandwidth portion packet;

The second bandwidth portion is an uplink bandwidth portion, and the at least one downlink bandwidth portion is a paired downlink bandwidth portion of the second bandwidth portion, or the at least one downlink bandwidth portion is a packet of the second bandwidth portion. Part of the pre-configured downlink bandwidth.
The method according to any one of claims 1 to 5, wherein the method further comprises:

Receiving, by the terminal, third control information through the first bandwidth part, where the third control information is used to indicate any bandwidth part in the second bandwidth part packet;

The terminal deactivates all bandwidth parts in the second bandwidth part packet according to the third control information.
The method according to claim 6, wherein the first control information is further used to instruct activation of a bandwidth part in the second bandwidth part packet, and the third control information is further used to instruct deactivation of the bandwidth part Bandwidth part of the second bandwidth part packet.
The method according to claim 7, wherein a value of a first bit field of the first control information is a first value, and a value of the first bit field of the third control information is a Two values.
The method according to any one of claims 1 to 8, wherein the first control information carries an index of the second bandwidth portion packet and / or an index of the second bandwidth portion.
A communication method, comprising:

The network device determines first control information, where the first control information is used to indicate a second bandwidth portion in a second bandwidth portion packet;

Sending, by the network device, the first control information to a terminal through a first bandwidth portion in a first bandwidth portion packet;

The first bandwidth part packet and the second bandwidth part packet each include an uplink bandwidth part and a downlink bandwidth part, and the second bandwidth part is an uplink bandwidth part or a downlink bandwidth part.
The method according to claim 10, wherein the downlink bandwidth portion in the first bandwidth portion packet includes a bandwidth portion for receiving a system message, and / or, a bandwidth portion for initial access.
The method according to claim 10 or 11, wherein the first control information is received by the terminal through a first search space corresponding to an active bandwidth portion of the first bandwidth portion grouping, wherein the The first search space is further used by the terminal to receive second control information, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet.
The method according to any one of claims 10 to 12, wherein the method further comprises:

The network device sends third control information to the terminal through the first bandwidth part, where the third control information is used to indicate any bandwidth part in the second bandwidth part packet.
The method according to claim 13, wherein the first control information is further used to instruct activation of a bandwidth portion in the second bandwidth portion packet, and the third control information is further used to instruct deactivation of the bandwidth portion Bandwidth part of the second bandwidth part packet.
The method according to claim 14, wherein a value of a first bit field of the first control information is a first value, and a value of the first bit field of the third control information is a Two values.
The method according to any one of claims 10 to 15, wherein the first control information carries an index of the second bandwidth part packet and / or an index of the second bandwidth part.
A device, comprising:

A receiving unit, configured to receive first control information through a first bandwidth portion in a first bandwidth portion packet, where the first control information is used to indicate a second bandwidth portion in a second bandwidth portion packet, and the first bandwidth portion Both the packet and the second bandwidth part packet include an uplink bandwidth part and a downlink bandwidth part;

A processing unit, configured to activate the second bandwidth portion in the second bandwidth portion packet according to the first control information, where the second bandwidth portion is an uplink bandwidth portion or a downlink bandwidth portion.
The apparatus according to claim 17, wherein the downlink bandwidth portion in the first bandwidth portion packet includes a bandwidth portion for receiving a system message, and / or, a bandwidth portion for initial access.
The apparatus according to claim 17 or 18, wherein the first control information is received by the apparatus through a first search space corresponding to an activation bandwidth part of the first bandwidth part grouping, wherein the The first search space is further used by the apparatus to receive second control information, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet.
The device according to any one of claims 17 to 19, wherein the processing unit is further configured to:

Activating at least one uplink bandwidth portion in the second bandwidth portion packet;

The second bandwidth portion is a downlink bandwidth portion, the at least one uplink bandwidth portion is a paired uplink bandwidth portion of the second bandwidth portion, or the at least one uplink bandwidth portion is a packet of the second bandwidth portion. The pre-configured upstream bandwidth portion of the.
The device according to any one of claims 17 to 20, wherein the processing unit is further configured to:

Activating at least one downlink bandwidth portion in the second bandwidth portion packet;

The second bandwidth portion is an uplink bandwidth portion, and the at least one downlink bandwidth portion is a paired downlink bandwidth portion of the second bandwidth portion, or the at least one downlink bandwidth portion is a packet of the second bandwidth portion. Part of the pre-configured downlink bandwidth.
The device according to any one of claims 17 to 21, wherein the receiving unit is further configured to:

Receiving third control information through the first bandwidth part, where the third control information is used to indicate any bandwidth part in the second bandwidth part packet;

The processing unit is further configured to:

According to the third control information, all bandwidth parts in the second bandwidth part packet are deactivated.
The device according to claim 22, wherein the first control information is further used to instruct activation of a bandwidth part in the second bandwidth part packet, and the third control information is further used to instruct deactivation of the Bandwidth part of the second bandwidth part packet.
The device according to claim 23, wherein a value of a first bit field of the first control information is a first value, and a value of the first bit field of the third control information is a Two values.
The device according to any one of claims 17 to 24, wherein the first control information carries an index of the second bandwidth part packet and / or an index of the second bandwidth part.
A device, comprising:

A processing unit, configured to determine first control information, where the first control information is used to indicate a second bandwidth portion in a second bandwidth portion packet;

A sending unit, configured to send the first control information to the terminal through a first bandwidth part of the first bandwidth part packet;

The first bandwidth part packet and the second bandwidth part packet each include an uplink bandwidth part and a downlink bandwidth part, and the second bandwidth part is an uplink bandwidth part or a downlink bandwidth part.
The apparatus according to claim 26, wherein the downlink bandwidth part in the first bandwidth part packet includes a bandwidth part for receiving a system message, and / or, a bandwidth part for initial access.
The apparatus according to claim 26 or 27, wherein the first control information is received by the terminal through a first search space corresponding to an activated bandwidth part of the first bandwidth part grouping, wherein the The first search space is further used by the terminal to receive second control information, where the second control information is used to indicate the uplink bandwidth portion and / or the downlink bandwidth portion in the first bandwidth portion packet.
The apparatus according to any one of claims 26 to 28, wherein the sending unit is further configured to:

Sending third control information to the terminal through the first bandwidth portion, where the third control information is used to indicate any bandwidth portion in the second bandwidth portion packet.
The apparatus according to claim 29, wherein the first control information is further used to instruct activation of a bandwidth part in the second bandwidth part packet, and the third control information is further used to instruct deactivation of the Bandwidth part of the second bandwidth part packet.
The apparatus according to claim 30, wherein a value of a first bit field of the first control information is a first value, and a value of the first bit field of the third control information is a Two values.
The apparatus according to any one of claims 26 to 31, wherein the first control information carries an index of the second bandwidth part packet and / or an index of the second bandwidth part.
A device, comprising: a processor, a memory, and instructions stored on the memory and executable on the processor, and when the instructions are executed, cause the device to execute any one of claims 1 to 16 Item.
A communication system, comprising: the device according to any one of claims 17 to 25 and the device according to any one of claims 26 to 32.
A computer-readable storage medium, comprising instructions that, when run on a computer, causes the computer to perform the method of any one of claims 1 to 16.
A computer program product, which, when run on a computer, causes the computer to perform the method according to any one of claims 1 to 16.