WO2024012399A1

WO2024012399A1 - Method executed by user equipment, and user equipment

Info

Publication number: WO2024012399A1
Application number: PCT/CN2023/106532
Authority: WO
Inventors: 马小骏; 刘仁茂
Original assignee: 夏普株式会社; 马小骏
Priority date: 2022-07-12
Filing date: 2023-07-10
Publication date: 2024-01-18
Also published as: CN117440521A

Abstract

Provided in the present invention are a method executed by a user equipment (UE), and a user equipment. The method executed by a UE comprises: a UE receiving network indication information, wherein the indication information includes parameters used for data transmission, and the UE is a UE using a relatively small data transmission bandwidth; and according to the parameters used for data transmission, the UE determining one or more resource blocks (RBs) on a bandwidth used for transmitting a shared channel, wherein the size of each RB is not greater than the maximum bandwidth of the UE; and the UE performing data transmission in the RBs. Therefore, the capacity reduction requirement of a related device in a network can be met, the requirement of coexistence with existing devices in the network is ensured, and higher network utilization efficiency is obtained.

Description

Methods executed by user equipment and user equipment

Technical field

The present invention relates to the field of wireless communication technology, and specifically to methods executed by user equipment and corresponding user equipment.

Background technique

This section provides a better understanding of various aspects of the invention. Accordingly, the statements in this section should be read in this light and should not be construed as an admission of what is or is not prior art.

Several typical applications are defined in the 5G system. For example, industrial wireless sensor applications are dedicated to accelerating industrial transformation and digitalization to gain flexibility in industrial production processes, improve productivity and efficiency, and also help reduce maintenance and improve operational safety, etc. . Video surveillance equipment is used in smart city construction to help achieve better city management and services. Wearable devices can be used for intelligent services in many aspects such as medical care and daily life. Devices for these applications are expected to have lower complexity and less power consumption to reduce costs and expand the scope of applications. There are many ways to reduce device complexity, such as reducing the peak data rate of these devices to no more than 10Mbps, or further reducing the user equipment bandwidth from a maximum of 20MHz to a maximum of 5MHz. These methods or their combination can be used at different times. Reduce the complexity of equipment and reduce costs. At the same time, the coexistence of these devices with other types of NR user equipment in the same community must be considered to maintain ecological integrity, maximize ecological scale, and improve network efficiency. These new business requirements put forward some new requirements for the existing NR network. For example, if the network wants to support the bandwidth of user equipment being reduced to a maximum of 5MHz, it requires network configuration parameters or resource parameters in the transmission process of scheduled data to meet relevant requirements. For example, reducing the peak rate of user equipment also requires some new constraints on the network's data scheduling parameters, etc. The related method of the present invention provides a better method for realizing the requirements of these devices in the network, and can ensure coexistence with existing devices in the network when meeting relevant constraints, and obtain better network utilization efficiency.

Contents of the invention

In order to solve at least part of the above problems, the present invention provides a method executed by user equipment and user equipment, which can meet the capacity reduction requirements of related equipment in the network, ensure the coexistence requirements with existing equipment in the network, and obtain better results. Good network utilization efficiency.

According to the present invention, a method executed by user equipment UE is provided, including: the user equipment receives network indication information, the indication information includes parameters used for data transmission, and the user equipment is a user equipment using a smaller data transmission bandwidth; The user equipment determines one or more resource blocks (RB blocks) on the bandwidth of the shared channel according to the parameters used in the data transmission, and the size of each RB block is not greater than the maximum bandwidth of the user equipment; and the user equipment in the Data transmission occurs in RB blocks.

In the above method, the parameter used in the data transmission may be a bandwidth parameter of the bandwidth segment BWP, and the user equipment determines the starting point, size and number of the RB block according to the bandwidth parameter.

In the above method, the user equipment may determine the starting point of the x+1th RB block for Determine the size of the x+1th RB block as Determine the number of RB blocks X as Among them, x is the serial number of the RB block, which is an integer value from 0 to X-1, and C is a predetermined constant. is the starting point of BWP, The number of RBs used for BWP, is a predetermined value determined based on the subcarrier spacing parameter used by the bandwidth or a value configured by higher layers, It is the maximum number of available RBs within the 5MHz user equipment channel bandwidth.

In the above method, the parameters used in the data transmission may be a high-level configuration of offset-list, which contains a list of X offset values, and the user equipment determines the starting point of the x+1th RB block according to the high-level configuration. Determine the size of the x+1th RB block as Among them, offset-list[x] is the x+1th value in the high-level configuration list, is the starting point of BWP, The number of RBs used for BWP, It is the maximum number of available RBs within the 5MHz user equipment channel bandwidth.

In the above method, the parameter used in the data transmission may be the bandwidth parameter of CORESET0, and the user equipment determines the offset value of the starting point of the x+1th RB block relative to the minimum subcarrier of CORESET0 according to the bandwidth parameter of CORESET0. for Determine the size of the x+1th RB block as Determine the number of RB blocks X as Among them, x is the sequence number of the RB block, which is an integer value from 0 to X-1. is the bandwidth of CORESET0, is a predetermined value determined based on the subcarrier spacing parameter used by the bandwidth or a value configured by higher layers, It is the maximum number of available RBs within the 5MHz user equipment channel bandwidth.

In the above method, the user equipment may perform at least one of the following operations to determine the sequence number of the RB block used: determine the sequence number of the RB block used according to the time slot number of the physical downlink shared channel PDSCH; determine the DCI The resource indicated by the mid-frequency domain resource indication information is within the range of the determined RB block; according to the higher layer configuration, when the higher layer indicates the existence of the RB block sequence number indication field in the DCI, the sequence number of the RB block is determined according to the indication in the DCI. When the higher layer does not indicate that the RB block indication field exists in the DCI, the sequence number of the RB block is determined based on the slot number parameter.

In the above method, when the user equipment uses the bandwidth of CORESET0 to determine the size and location of the RB block, the frequency domain resource allocation value in the DCI used to schedule the PDSCH is used bit indicates the allocated frequency domain resource, where, is the bandwidth of CORESET0; when the user equipment uses the bandwidth of activated BWP to determine the information for the RB block, the frequency domain resource allocation value in DCI is used The bit indicates the frequency domain location of the scheduled resource, where, It is the maximum number of available RBs within the 5MHz user equipment channel bandwidth.

In the above method, the user equipment in the connected state may use intra-slot frequency hopping during data transmission according to the instructions of the higher-layer signaling, and determine the symbol number and frequency of the first hop and the second hop on the scheduled time slot. Domain position, data is received using different frequency domain positions on different symbols.

In the above method, the user equipment in the connected state may use intra-slot frequency hopping during data transmission according to the instructions of higher layer signaling, determine the frequency domain position used for frequency hopping transmission according to the RB block sequence number, and determine the first hop and the frequency domain location respectively. The second hop uses the sequence number of the RB block as the starting point for frequency domain resource allocation.

In addition, according to the present invention, a user equipment is proposed, including: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.

Invention effect

According to the present invention, the capacity reduction requirements of relevant equipment in the network can be met, ensuring that the The coexistence requirements of devices in the network can achieve better network utilization efficiency.

Description of drawings

The above and other features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

Figure 1 shows a method executed by user equipment UE related to Embodiment 1 of the present invention.

FIG. 2 is a schematic diagram showing an example in which the user equipment determines the position of each RB block in the bandwidth related to Embodiment 1 of the present invention.

Figure 3 is a brief structural block diagram of the user equipment UE involved in the present invention.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below, which are provided by way of example only to convey the scope of the subject matter to those skilled in the art. In addition, for the sake of simplicity, detailed descriptions of well-known technologies that are not directly related to the present invention are omitted to prevent confusion in the understanding of the present invention.

Generally, all terms used herein will be interpreted according to their ordinary meanings in the relevant technical field, unless a different meaning is clearly given and/or implied in the context in which the term is used. Unless explicitly stated otherwise, all references to one such element, device, component, component, step, etc. shall be construed publicly to refer to at least one instance of such element, device, component, component, step, etc. The steps of any method disclosed herein need not be performed in the exact order disclosed, unless one step must be explicitly described as following or preceding another step and/or implicitly one step must follow or precede another step. . Any feature of any embodiment disclosed herein may be applied to any other embodiment where appropriate. Likewise, any advantages of any embodiment may be applied to any other embodiment, and vice versa.

The following uses the 5G/NR mobile communication system and its subsequent evolved versions as an example application environment to specifically describe multiple embodiments according to the present invention. However, it should be noted that the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as communication systems after 5G and 4G and 3G mobile communication systems before 5G, 802.11 Wi-Fi and more.

Some terms involved in the present invention are described below. Unless otherwise specified, the terms involved in the present invention are defined here. The terminology given in the present invention may use different naming methods in LTE, LTE-Advanced, LTE-Advanced Pro, NR and subsequent or other communication systems. However, unified terminology is used in the present invention. When applied to specific systems When used, it can be replaced by the term used in the corresponding system.

3GPP: 3rd Generation Partnership Project, third generation partner program

LTE: Long Term Evolution, long-term evolution technology

NR: New Radio, new wireless, new air interface

UE: User Equipment, user equipment

gNB: NR base station

FR1: Frequency range 1 as defined in TS 38.104, frequency range 1 defined by TS38.104

FR2: Frequency range 2 as defined in TS 38.104, frequency range 2 defined by TS38.104

BWP: BandWidth Part, bandwidth fragment/part

SFN: System frame number, system frame number

OFDM: Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing

CP: Cyclic Prefix, cyclic prefix

TA: Timing Advance, uplink timing advance amount

SCS: sub-carrier spacing, sub-carrier spacing

RB: Resource Block, resource block

RE: Resource Element, resource unit

CRB: Common Resource Block, public resource block

PRB: Physical Resource Block, physical resource block

VRB: Virtual resource block, virtual resource block

REG: Resource Element Group, resource unit group

CCE: Control channel element, control channel unit

EPRE: Energy per resource element, energy per resource unit

TDD: Time Division Duplexing, time division duplexing

FDD: Frequency Division Duplexing, frequency division duplexing

CSI: Channel State Information, channel state information

DCI: Downlink Control Information, downlink control information

MCS: Modulation and Coding Scheme, modulation coding scheme

CRC: Cyclic Redundancy Check, cyclic redundancy check

SFI: Slot Format Indication, slot format indication

QCL: Quasi co-location, quasi co-location

HARQ: Hybrid Automatic Repeat Request, hybrid automatic repeat request

CORESET: Control resource set, control resource set

MIB: Master Information Block, master information block

SIB: system information block, system information block

SIB1: System Information Block Type 1, system information block type 1

SSB: SS/PBCH block, synchronization signal/physical broadcast channel block

PSS: Primary Synchronization Signal, main synchronization signal

SSS: Secondary Synchronization Signal, auxiliary synchronization signal

SRS: Sounding Reference Signal, detection reference signal

DMRS: Demodulation Reference Signal, demodulation reference signal

CSI-RS: Channel State Information Reference Signal, channel state information reference signal

TRS: Tracking Reference Signal, tracking reference signal

RACH: random-access channel, random access channel

PBCH: Physical broadcast channel, physical broadcast channel

PUCCH: Physical Uplink Control Channel, physical uplink control channel

PUSCH: Physical Uplink Shared Channel, physical uplink shared channel

PRACH: Physical random-access channel, physical random access channel

PDSCH: Physical downlink shared channel, physical downlink shared channel

PDCCH: Physical downlink control channel, physical downlink control channel

UL-SCH: Uplink Shared Channel, uplink shared channel

DL-SCH: Downlink Shared Channel, uplink shared channel

NZP-CSI-RS: Not-Zero-Power CSI-RS, non-zero power CSI-RS

C-RNTI: Cell Radio Network Temporary Identifier, residential wireless network temporary identifier

P-RNTI: Paging RNTI, paging wireless network temporary identifier

RA-RNTI: Random Access RNTI, random access wireless network temporary identifier

CS-RNTI: Configured Scheduling RNTI, configured scheduling wireless network temporary identifier

SI-RNTI: System Information RNTI, System Information Wireless Network Temporary Identifier

TC-RNTI: Temporary C-RNTI, temporary cell wireless network temporary identifier

RAR: Random access response, random access response

CSS: Common search space, public search space

RIV: resource indication value, resource indication value

The following is a description of technology associated with the solution of the present invention. Unless otherwise specified, the same terms in the specific embodiments have the same meaning as in the related art.

It is worth pointing out that the user, user equipment and terminal equipment involved in the specification of the present invention have the same meaning, and UE can also be used to represent user equipment in the text, and no specific distinction or limitation will be made in the following text. Similarly, network equipment is equipment that communicates with user equipment, including but not limited to base station equipment, gNB, eNB, wireless AP, wireless relay, terminals with relay capabilities, etc., and will not be specifically distinguished and limited in the following text. The base station can be used as a form of network equipment implementation in this article. During specific implementation, it can be easily replaced with other network equipment forms.

The network node sends DCI information to the terminal to indicate the behavior of the user equipment. For example, the network node can use PDCCH to send DCI format 0_0/0_1/0_2 to schedule uplink data PUSCH transmission, or it can also use PDCCH to send DCI format 1_0/1_1/1_2 and other formats. Scheduling of downlink data PDSCH transmission. DCI contains allocation parameters of resources used for data transmission, such as frequency domain resource allocation parameters, which are used to indicate which frequency domain resources are scheduled on a bandwidth for transmission of shared channels. The frequency domain bandwidth allocated to the shared channel in DCI is related to the BWP where the channel is located. For example, when using the PDSCH type1 resource allocation method, the bandwidth for On the BWP of each RB, used in DCI RIV information indicated by bits indicates the allocated resources, and the terminal determines the starting point of the allocated resources on the BWP and the number of consecutive RBs occupied by the resources based on the RIV information.

When the user equipment can only support a smaller data transmission bandwidth, network scheduling also needs to limit the use of smaller bandwidth parameters for scheduling so that the resources used for data transmission do not exceed the capabilities of the user equipment. To ensure compatibility with existing equipment, the uplink or downlink BWP bandwidth configured in the network may be greater than the maximum bandwidth supported by the user equipment. In this case, when the network schedules data transmission of the user equipment on the larger BWP bandwidth, it cannot Exceeds the terminal's bandwidth capabilities. The present invention provides an appropriate method so that user equipment with such limited capabilities can coexist with other types of user equipment in the same cell, and relevant data transmission parameters can meet the requirements of such user equipment and realize business needs. That is, according to the method executed by user equipment and the user equipment provided by the present invention, it is possible to meet the capacity reduction requirements of related equipment in the network, ensure coexistence requirements with existing equipment in the network, and obtain better network utilization efficiency.

The embodiments of the present invention will be specifically described below. Unless explicitly stated below, the user equipment mentioned below refers to user equipment with such restricted capabilities.

[Example 1]

In Embodiment 1 of the present invention, the user equipment receives network indication information, the indication information includes parameters used for data transmission, and the user equipment is a user equipment using a smaller data transmission bandwidth; the user equipment uses parameters according to the data transmission , determine one or more resource blocks (RB blocks) on the bandwidth of the shared channel, and the size of each RB block is not larger than the maximum bandwidth of the user equipment; the user equipment performs data transmission in the RB blocks.

Figure 1 is a flowchart of a method performed by user equipment UE according to Embodiment 1 of the present invention.

As shown in Figure 1, in step S101, the UE receives network indication information. The indication information includes parameters used for data transmission. The UE is a user equipment using a smaller data transmission bandwidth.

In step S103, the UE determines one or more RB blocks on the bandwidth used to transmit the shared channel according to the parameters used for data transmission. The size of each RB block is not larger than the maximum bandwidth of the user equipment.

In step S105, the UE performs data transmission in the RB block.

The relevant processes are described in detail below.

In an NR system, when the bandwidth of user equipment is limited to reduce complexity, different bandwidth limitation methods may be used for shared channels and control channels. For example, a maximum UE channel bandwidth of 20 MHz can be used for the control channel, and a maximum UE channel bandwidth of 5 MHz can be used for the shared channel. In this way, the user equipment can use a smaller bandwidth and use the shared channel to transmit data to reduce its implementation complexity. At the same time, the performance of the control channel will not be degraded due to bandwidth limitations, and it can maintain good compatibility with existing network configurations.

BWP is used in NR as a reference for configuring related channel transmission resources. The BWP configuration includes the offset of the smallest subcarrier of the BWP relative to the reference point A in the frequency domain, which is used as the starting point of the BWP. Also contains the number of consecutive RBs used by BWP The network allocates resources to relevant channels within the frequency domain determined by the BWP and schedules relevant channels for data transmission. For example, the network uses frequency domain resource allocation information in DCI to indicate the starting point RB _start of the scheduled resources in the BWP and the size of the resource block L _RBs , and the user equipment can determine The first L _RBs RBs are the frequency domain range of the scheduled resources and are used for data transmission of the scheduled shared channel.

The number of available RBs related to the channel bandwidth capability of the user equipment can be determined by the bandwidth size and SCS parameters. For example, when the SCS is 15kHz, the number of available RBs in the UE channel bandwidth of 20MHz is 106, and the number of available RBs in the UE channel bandwidth of 5MHz is 25. If the channel bandwidth of the user equipment on the shared channel is restricted to not be greater than 5 MHz, the number of RBs used for transmission on the shared channel shall not be greater than 25. When the SCS used in the bandwidth is 30kHz, the number of available RBs in the 5MHz UE channel bandwidth is 11. If the channel bandwidth of the user equipment on the shared channel is restricted to not be greater than 5MHz, the number of RBs used for transmission on the shared channel is not greater than 11. These parameters are typical values in various situations, and the essence of the present invention is not affected when different defined values are used in the system.

Optionally, the user equipment determines several RB blocks on the bandwidth used for shared channel transmission, and the size of each RB block is not larger than the maximum bandwidth used by the user equipment for shared channel transmission. The user equipment can receive or transmit the shared channel in the RB block on one or more time slots according to certain rules or instructions. The user equipment can determine the position of each RB block in the bandwidth, such as by determining the starting point of the RB block in the bandwidth That is, the smallest subcarrier of the RB block The spacing between the minimum subcarriers and the bandwidth, and the size of the RB block That is, the number of available RBs for this RB block, etc. A specific example is shown in Figure 2.

In an optional embodiment, the user equipment determines several RB blocks on the bandwidth according to the bandwidth parameters. The user equipment determines the starting point and size of one or more RB blocks and the number of RB blocks on the bandwidth according to the bandwidth parameters.

Optionally, the user equipment determines the starting point of the x+1th RB block within the bandwidth for

The size of the x+1th RB block for

Among them, x is the sequence number of the RB block, which is an integer value from 0 to X-1. X is the number of RB blocks on the bandwidth, which can be calculated according to Sure. C is a predetermined constant. For example, the value of C is 6, so that the RB block can be aligned with the bandwidth of CORESET. floor is the lower rounding operation. min is the operation of taking the smaller value.

Optionally, the user equipment determines the starting point of the x+1th RB block within the bandwidth. for

The size of the x+1th RB block for

Among them, x is the sequence number of the RB block, which is an integer value from 0 to X-1. X is the number of RB blocks on the bandwidth, which can be calculated according to Sure.

Offset value configured for higher layers. Optionally, the higher layer does not configure this value, and the user equipment uses the predetermined value, for example value.

Optionally, the user equipment determines the starting point and size of the RB block within the bandwidth according to the higher layer configuration. For example, the high-level configuration indicates a list offset-list containing X offset values for the bandwidth. The user equipment determines X RB blocks on the bandwidth, where the starting point of the x+1th RB block within the bandwidth for

offset-list[x] is the x+1th value in the high-level configuration list.

The size of the x+1th RB block for

Optionally, the user equipment can also determine the location of the RB block by determining the CRB sequence number of the starting point of the RB block. For example, according to the method of determining the starting point of the RB block within the bandwidth in the above example, determine the RB block x starting point CRB sequence number

In the embodiment, A predetermined value determined by SCS parameters based on bandwidth usage or a value configured by higher layers. Optionally, the user device uses a predetermined value to determine When the SCS used by the bandwidth is 15kHz, the predetermined value is 24, and when the SCS used by the bandwidth is 30kHz, the predetermined value is 12. With this value, the size of the RB block can be aligned with the number of RBs required by CORESET or PRACH. The predetermined value here may also be other values, for example, when the SCS used in the bandwidth is 15 kHz, the predetermined value is 25, and when the SCS used in the bandwidth is 30 kHz, the predetermined value is 11. With this value, the maximum number of available RBs within the bandwidth range can be obtained. Or when the SCS used by the bandwidth is 15kHz, the predetermined value is 27, and when the SCS used by the bandwidth is 30kHz, the predetermined value is 13. With this value, in a typical configuration with a total bandwidth of 5/10/15/20MHz, 2RB intervals can be obtained between RB blocks, which can be used as protection sidebands for data transmission by user equipment, etc.

Optionally, the user equipment determines according to the signaling instructions value. For example, higher layer signaling indicates that SCS uses a value of 24 for a bandwidth of 15 kHz, and SCS uses a value of 12 for a bandwidth of 30 kHz. The user equipment can select the value to be used in the bandwidth based on the SCS value of the bandwidth usage.

Optional, user equipment has no indication at higher levels Use a predetermined value when the value is specified at a high level value, use the indicated value to determine the size and number of RB blocks on the bandwidth.

In the embodiment, It is the maximum number of available RBs used for shared channel transmission within the UE channel bandwidth. For example, the UE channel bandwidth used by the user equipment for the shared channel is 5MHz, and when the SCS used by the bandwidth is 15kHz, is 25, when the SCS used by the bandwidth is 30kHz, is 11. The network may also define other For example, when the SCS used by the bandwidth is 15kHz, is 24, when the bandwidth used SCS is 30kHz, is 12.

In the NR network, the bandwidth of the shared channel transmission resources scheduled by the network for user equipment in certain processes is the bandwidth determined by CORESET0. CORESET0 is the CORESET with sequence number 0 configured in the NR network, which is used to determine PDCCH-related resource parameters. For example, when the user equipment receives the PDSCH scheduled by DCI with SI-RNTI scrambled CRC, the PDSCH What is transmitted in is SIB1 information. At this time, the user equipment uses the bandwidth range of CORESET0 to determine the bandwidth of the downlink shared channel transmission.

Optionally, the user equipment determines the size and location of the RB block based on the bandwidth of CORESET0. The user equipment is based on the starting position of CORESET0 in the frequency domain and the bandwidth of CORESET0 Determine the size and location of RB blocks.

In an optional embodiment, the user equipment determines the start of the x+1th RB block on the bandwidth of CORESET0 for

where x takes on an integer value from 0 to X-1.

The number of RB blocks X is

The size of RB block x is

User equipment may have different methods of determining RB blocks and related DCI sizes in different states or configurations. For example, when the user equipment has a dedicated configuration, the scheduled resources use the RB block as a reference, and a smaller number of bits can be used to transmit DCI; when there is no dedicated configuration, the size of the DCI is determined based on the CORESET0 bandwidth to ensure communication with other user equipment in the network. The consistency of the DCI used ensures the coexistence of user equipment and other equipment.

Optionally, the user equipment determines the number and location of RB blocks using the activated BWP bandwidth or CORESET bandwidth according to the received shared channel type. For example, when the user equipment receives PDSCH scheduled in DCI format 1_0 using scrambled CRC such as SI-RNTI or P-RNTI or RA-RNTI or TC-RNTI decoded on CSS in a cell configured with CORESET0, the user equipment uses CORESET0 The determined starting point and size of the bandwidth determine the number and location of RB blocks on the bandwidth.

Optionally, when the user equipment receives the DCI-scheduled PDSCH that uses C-RNTI, CS-RNTI, etc. to scramble the CRC on the USS, the user equipment uses the bandwidth starting point and size determined by activating the BWP to determine the RB on the bandwidth. Number and location of blocks.

Optionally, when the user equipment uses the CORESET0 bandwidth to determine the size and location of the RB block, the frequency domain resource allocation value in the DCI used to schedule the PDSCH is used. The bit indicates the allocated frequency domain resource.

Optionally, when the user equipment uses the DCI-scheduled PDSCH transmitted by the PDCCH of the USS, the frequency domain resource allocation value uses The bit indicates the frequency domain location of the resource on the RB block.

The above embodiments take the terminal to determine the location and size of the RB block on the downlink bandwidth as an example. However, these methods for the terminal to determine the location and size of the RB block are also applicable to the terminal determining the location and size of the RB block on the uplink bandwidth. For example, the terminal determines several RB blocks for transmission of the PUSCH channel based on the BWP bandwidth parameters on the uplink activated BWP.

[Example 2]

It takes a certain amount of processing time for the user equipment to receive the PDCCH and demodulate the DCI information carried therein. That is to say, the user equipment may detect the correct DCI and obtain the scheduling information after receiving all PDCCH symbols and more time. In the NR network, it is supported to schedule the PDSCH in the same time slot as the PDCCH for data transmission. At this time, the reception processing time of the PDCCH may overlap with the PDSCH symbols being transmitted. At this time, the user equipment needs to cache symbol data on the entire bandwidth before determining the frequency domain resource allocation domain in the complete DCI. If the user equipment can determine the frequency domain range used by the PDSCH before demodulating the DCI, the user equipment can only cache data within the target frequency domain range, thereby reducing the complexity of the user equipment.

In the NR network, the distance between the PDCCH where the DCI is located and the time slot of the PDSCH scheduled by the DCI can be recorded as K0. That is, when the K0 value is 0, the PDCCH and the PDSCH scheduled by the DCI are on the same time slot. When the K0 value is greater than 0, the PDCCH and the PDSCH scheduled by DCI are not in the same time slot.

When the public or dedicated PDSCH configuration parameters containing the time domain allocation list parameters are not obtained, the user equipment obtains the time domain resource parameters determined according to the time domain resource indication information in the DCI according to the default table. For example, the user equipment determines the row number in the table based on the time domain resource indication information in the DCI, and the user equipment can obtain the corresponding K0 value and other parameters based on the table. Specific examples are shown in Table 1.

Table 1 Default PDSCH time domain resource allocation table A for normal CP

It can be seen from the relevant default PDSCH time domain resource allocation table parameters that in the FR1 frequency band, when the user equipment determines the time domain resources scheduled in the DCI based on the time domain default parameters, the K0 value is 0. At this time, if the user equipment can obtain the RB block sequence number used for PDSCH transmission according to a certain method before receiving the complete DCI signaling, unnecessary data storage and processing can be reduced, so that the user equipment can use lower complexity implementation Data transfer function.

Optionally, the user equipment determines the sequence number of the RB block to be used based on the slot number of the PDSCH. For example, the user equipment determines parameters based on the time slot number parameter The user equipment determines that the sequence number of the RB block is T mod X, where n _f is the system frame number of the time slot where the PDSCH is located, is the number of time slots on each wireless frame corresponding to the SCS parameter μ, It is the time slot number in a radio frame corresponding to the SCS parameter μ, which is the time slot number where the PDSCH is located. X is the number of RB blocks on the bandwidth determined by the user equipment. mod is the modulus operation. When K0 is 0, the PDCCH and the PDSCH scheduled by DCI are in the same time slot, and the terminal can determine the RB block used by the PDSCH when receiving the PDCCH, thereby reducing the complexity of the user equipment.

Among them, O is the offset value. Optionally, the O value used for the DCI of the SI-RNTI or P-RNTI or RA-RNTI or TC-RNTI scrambling CRC is 0. Optional, for SI-RNTI or The O value used in the DCI of P-RNTI or RA-RNTI or TC-RNTI scrambling CRC is the high-layer configuration value. If there is no configuration in the high-layer, the physical cell ID value NcellID is used.

Optionally, the user equipment may also use DCI to determine the sequence number of the RB block used. For example, when the user equipment is configured with the minimumSchedulingOffsetK0 parameter by the upper layer, the DCI format1_1 indicating that it is used to schedule PDSCH contains "Minimum applicable scheduling offset indicator". At this time, the user equipment does not expect that the K0 value of the DCI schedule of the C-RNTI or CS-RNTI or MCS-C-RNTI scrambled CRC is less than the minimum value determined by K_0min. That is, the user equipment can determine that the time slot interval between PDCCH and PDSCH is greater than the indicated value. At this time, the network can receive the RB block sequence number indication in the DCI through high-level configuration of the user equipment, so that the network can use the actual measurement results to determine the resource blocks used for data transmission, thereby obtaining better transmission effects.

Optionally, the user equipment determines the method of using RB blocks according to the higher layer configuration. For example, when the user equipment is configured with the minimumSchedulingOffsetK0 parameter by the upper layer, the DCI format1_1 used to schedule PDSCH contains "Minimum applicable scheduling offset indicator". At this time, the user equipment does not expect that the K0 value of the DCI schedule of the C-RNTI, CS-RNTI or MCS-C-RNTI scrambled CRC is less than the minimum value determined by K_0min. If the K_0min determined by the user equipment is greater than 0, then the network can configure the user equipment through the higher layer to receive the RB block indication in the DCI, so that the network can use the actual measurement results to determine the resource blocks used for data transmission, thereby obtaining better transmission effects. .

Optionally, when the higher layer indicates that the RB block sequence number indication field exists in the DCI, the user equipment determines the size of the indication field in the DCI according to the number of RB blocks, and the user equipment determines the sequence number of the RB block according to the indication in the DCI. For example, the terminal determines that the number of bits used to indicate the RB block sequence number in the DCI is The reason It is a rounding operation, and X is the number of RB blocks. When the higher layer does not indicate that the RB block indication field exists in the DCI, the user equipment determines the sequence number of the RB block based on the slot number parameter.

Optionally, the user equipment expects that the resources determined according to the frequency domain resource indication information in DCI are within the range of the determined RB block. That is, the user equipment does not expect that part or all of the resources determined by the resource indication information in the DCI are outside the frequency domain range of the determined RB block.

Optionally, when the user equipment uses the CORESET0 bandwidth to determine the size and location of the RB block, the frequency domain resource allocation value in the DCI used to schedule the PDSCH is used. The bit indicates the allocated frequency domain resource. The user equipment desires that the indicated frequency domain resource is not outside the RB block determined by the user equipment. For example, the user equipment determines the starting position of the resource block used for shared channel transmission in the BWP determined based on the frequency domain resource allocation information in DCI. resource block size Where x is the sequence number of the RB block determined by the user equipment.

Optionally, when the user equipment uses the bandwidth of activated BWP to determine RB block information, the frequency domain resource allocation value in DCI is used The bit indicates the frequency domain location of the scheduled resource. The starting point of the determined resource in BWP is RB _{start, DCI} is a value determined based on the frequency domain resource allocation value RIV in DCI. The size of the resource block that the terminal expects to be scheduled

[Example 3]

When the user equipment transmits on a smaller bandwidth, the frequency diversity gain obtained during data transmission is smaller due to the smaller spacing between subcarriers for data transmission. In this case, frequency hopping can be used to obtain the frequency hopping gain. to improve data transmission performance. For example, the user equipment in the RRC connected state uses intra-slot frequency hopping when receiving PDSCH according to the instructions of the higher layer. The user equipment determines the symbol number and frequency domain position of the first hop and the second hop in the scheduled time slot, and determines the number of symbols and frequency domain positions of the first hop and the second hop in the scheduled time slot. The data is received using different frequency domain positions on the symbols. Optionally, the user equipment in the RRC connected state uses frequency hopping within the time slot to receive DCI scheduled PDSCH data decoded in DCI format 11 or other USS according to the higher layer signaling instructions. The user equipment determines the frequency hopping transmission use based on the RB block sequence number. frequency domain position. For example, the user equipment determines the RB block sequence numbers used by the first hop and the second hop respectively as the starting point for frequency domain resource allocation. Optionally, the user equipment determines the RB block sequence number of the first hop, and determines the RB block sequence number of the second hop according to the configuration or default value. For example, the user equipment determines the RB block sequence number of the first hop i_hop0=T mod The user equipment determines the location of the resource block used to transmit the shared channel on the RB block of the second hop based on the location of the frequency domain resource indicated in the DCI relative to the first RB block. Or determine user settings based on DCI instructions The user equipment determines the RB block sequence number of the first hop i_hop0, and the user equipment determines the RB block sequence number of the second hop as i_hop1=mod(i_hop0+Y,X). Y is the RB block sequence number interval.

Optional, Y is the high-level configuration value.

Optional, Y is the default value, for example, Y=floor(X/2).

Optionally, when a high-level configuration value exists, the user equipment uses the high-level configuration value to determine Y. When a high-level configuration value does not exist, the user equipment uses the default value.

Next, FIG. 3 is used to illustrate a user equipment that can execute the method performed by the user equipment described in detail above as a modified example of the present invention.

FIG. 3 is a block diagram showing user equipment UE according to the present invention.

As shown in Figure 3, the user equipment UE30 includes a processor 301 and a memory 302. The processor 301 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 302 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory. Memory 302 stores program instructions. When the instruction is executed by the processor 301, the above-mentioned method executed by the user equipment described in detail in the present invention can be executed.

The method and related equipment of the present invention have been described above in conjunction with preferred embodiments. Those skilled in the art can understand that the methods shown above are only exemplary, and the embodiments described above can be combined with each other without conflict. The method of the present invention is not limited to the steps and sequence shown above. The network nodes and user equipment shown above may include more modules, for example, may also include modules that may be developed or developed in the future and may be used for base stations, MMEs, or UEs, and so on. The various identifications shown above are only illustrative and not restrictive, and the present invention is not limited to the specific information elements as examples of these identifications. Many changes and modifications may be made by those skilled in the art in light of the teachings of the illustrated embodiments.

It should be understood that the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of software and hardware. For example, various components inside the base station and user equipment in the above embodiments can be implemented by a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processing device, dedicated Integrated circuits (ASICs), field programmable gate arrays (FPGAs), programmable logic devices (CPLDs), etc.

In this application, "base station" may refer to a mobile communication data and control switching center with larger transmission power and wider coverage area, including functions such as resource allocation and scheduling, data reception and transmission. "User equipment" may refer to user mobile terminals, including, for example, mobile phones, laptops and other terminal equipment that can conduct wireless communication with base stations or micro base stations.

Furthermore, embodiments of the invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is a product that has a computer-readable medium with computer program logic encoded on the computer-readable medium, and when executed on a computing device, the computer program logic provides relevant operations to implement The above technical solution of the present invention. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in embodiments of the invention. Such arrangements of the invention are typically provided as software, code and/or other data structures disposed or encoded on a computer readable medium, such as an optical medium (eg, a CD-ROM), a floppy or hard disk, or the like, or as one or more Other media for firmware or microcode on a ROM or RAM or PROM chip, or downloadable software images, shared databases, etc. in one or more modules. Software or firmware or such configuration may be installed on the computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.

In addition, each functional module or each feature of the base station equipment and user equipment used in each of the above embodiments may be implemented or executed by a circuit, which is usually one or more integrated circuits. Circuitry designed to perform the various functions described in this specification may include a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) or general-purpose integrated circuit, field-programmable gate array (FPGA) or other Programmed logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above. A general purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller or state machine. The above-mentioned general processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit. In addition, when an advanced technology that can replace the current integrated circuit appears due to the advancement of semiconductor technology, the present invention can also use an integrated circuit obtained by utilizing the advanced technology.

Although the present invention has been described above in conjunction with its preferred embodiments, those skilled in the art will understand that various modifications, substitutions and changes can be made in the present invention without departing from the spirit and scope of the invention. Therefore, the present invention should not be limited by the above-described embodiments, but rather by the appended claims and their equivalents.

Claims

A method performed by user equipment UE, including:

The user equipment receives network indication information, the indication information includes parameters used for data transmission, and the user equipment is a user equipment that uses a smaller data transmission bandwidth;

The user equipment determines one or more resource blocks (RB blocks) on the bandwidth used to transmit the shared channel according to the parameters used for data transmission, and the size of each RB block is not greater than the maximum bandwidth of the user equipment; and

The user equipment performs data transmission in the RB block.
The method according to claim 1, characterized in that:

The parameters used in the data transmission are the bandwidth parameters of the bandwidth segment BWP,

The user equipment determines the starting point, size and number of RB blocks according to the bandwidth parameter.
The method according to claim 2, characterized in that:

The user equipment determines the starting point of the x+1th RB block for

Determine the size of the x+1th RB block as

Determine the number of RB blocks X as

in,

x is the sequence number of the RB block, which is an integer value from 0 to X-1.

C is a predetermined constant,

is the starting point of BWP,

The number of RBs used for BWP,

is a predetermined value determined based on the subcarrier spacing parameter used by the bandwidth or a value configured by higher layers,

It is the maximum number of available RBs within the 5MHz user equipment channel bandwidth.
The method according to claim 1, characterized in that:

The parameters used in the data transmission are the high-level configuration of offset-list, which contains a list of X offset values.

According to the high-level configuration, the user equipment

Determine the starting point of the x+1th RB block for

Determine the size of the x+1th RB block as

in,

offset-list[x] is the x+1th value in the high-level configuration list,

is the starting point of BWP,

The number of RBs used for BWP,

It is the maximum number of available RBs within the 5MHz user equipment channel bandwidth.
The method according to claim 1, characterized in that:

The parameters used in the data transmission are the bandwidth parameters of CORESET0,

According to the bandwidth parameters of CORESET0, the user equipment

Determine the offset value of the starting point of the x+1th RB block relative to the minimum subcarrier of CORESET0 for

Determine the size of the x+1th RB block as

Determine the number of RB blocks X as

in,

x is the sequence number of the RB block, which is an integer value from 0 to X-1,

is the bandwidth of CORESET0,

is a predetermined value determined based on the subcarrier spacing parameter used by the bandwidth or a value configured by higher layers,

It is the maximum number of available RBs within the 5MHz user equipment channel bandwidth.
The method according to claim 1, characterized in that:

The user equipment performs at least one of the following operations to determine the sequence number of the RB block used:

Determine the sequence number of the RB block used according to the time slot number of the physical downlink shared channel PDSCH;

Determine that the resource indicated by the frequency domain resource indication information in the DCI is within the range of the determined RB block;

According to the higher layer configuration, when the higher layer indicates that the RB block sequence number indication field exists in the DCI, the sequence number of the RB block is determined according to the indication in the DCI. When the higher layer does not indicate that the RB block indication field exists in the DCI, the RB is determined according to the slot number parameter. The sequence number of the block.
The method according to claim 6, characterized in that:

When the user equipment uses the bandwidth of CORESET0 to determine the size and location of the RB block, the frequency domain resource allocation value in the DCI used to schedule the PDSCH is used bit indicates the allocated frequency domain resource, where, is the bandwidth of CORESET0;

When the user equipment uses the bandwidth of activated BWP to determine the information for the RB block, the frequency domain resource allocation value in DCI is used The bit indicates the frequency domain location of the scheduled resource, where, It is the maximum number of available RBs within the 5MHz user equipment channel bandwidth.
The method according to claim 1, characterized in that:

The connected user equipment uses intra-slot frequency hopping during data transmission according to the instructions of higher-layer signaling, and determines the symbol number and frequency domain position of the first hop and the second hop on the scheduled time slot. On different symbols Receive data using different frequency domain locations.
The method according to claim 1, characterized in that:

Connected user equipment uses intra-slot frequency hopping during data transmission according to the instructions of higher layer signaling, determines the frequency domain position used for frequency hopping transmission according to the RB block sequence number, and determines the RB blocks used by the first hop and the second hop respectively. The sequence number is used as the starting point for frequency domain resource allocation.
A user device including:

processor; and

memory, which stores instructions,

wherein the instructions, when executed by the processor, perform a method according to any one of claims 1 to 9.