CN115334648A

CN115334648A - Resource indication method and device

Info

Publication number: CN115334648A
Application number: CN202110506625.5A
Authority: CN
Inventors: 刘哲; 余政; 金哲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-11-11
Also published as: WO2022237735A1

Abstract

The application provides a resource indication method and a device, wherein the method comprises the following steps: the method comprises the steps that terminal equipment obtains a resource indicated value from network equipment, the resource indicated value is associated with M, S and L, and S and/or resource block length L are/is determined according to the resource indicated value and an analysis mode; transmitting in the first transmission resource according to the S and/or the L; by the method, the network equipment can uniformly determine the resource indication value for indicating the starting RB and the RB number of the resource according to the same method without distinguishing the type of the terminal equipment. For the terminal equipment, when the resource indicating value is obtained, the S and/or the resource block length L can be determined in a preset analysis mode, so that the first transmission resource corresponding to the resource indicating value is determined according to the S and/or the resource block length L. When the maximum value of L is the first threshold value or the maximum value of L is related to M, the complexity of resource allocation can be simplified by limiting the maximum value of the number L of RBs to be allocated.

Description

Resource indication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a resource indication method and apparatus.

Background

In a communication system such as a New Radio (NR) system, a terminal device establishes a connection with a network device through a random access procedure. Taking a four-step random access procedure as an example, the following procedures are generally involved: the terminal equipment sends a preamble; the network equipment sends a Random Access Response (RAR) message; the terminal equipment sends a message 3; the network device sends a contention resolution message.

In the random access procedure, the network device may indicate, to the terminal device, a starting Resource Block (RB) of a resource of a message that needs to be transmitted or received and a number of included RBs through a Resource Indication Value (RIV). For example, the starting RB and the number of included RBs of the resource corresponding to the message 3 may be indicated by the RIV. The specific value of the RIV is determined according to an initial Uplink (UL) bandwidth part (BWP) configured for the terminal device by the network device.

However, in a communication system such as the NR system, in addition to a legacy (legacy) terminal device, a terminal device having a lower capability than the legacy terminal device, that is, a reduced capability (REDCAP) terminal device is supported. The REDCAP terminal device is mainly characterized by reduced or limited terminal capabilities, e.g., limited bandwidth capabilities, and the maximum channel bandwidth will be reduced to 20MHz compared to the conventional terminal device. For a REDCAP terminal device, the upstream channel bandwidth may be limited by the network device within its bandwidth capability, e.g., the network device only configures the REDCAP terminal device with an initial upstream BWP of 20MHz.

In the random access process, the network device cannot identify the type of the terminal device through the message sent by the terminal device, so the network device considers that the type of the terminal device is the conventional terminal device, and determines the RIV according to the initial uplink BWP of the conventional terminal device. For the REDCAP terminal device, the bandwidth size of the initial uplink BWP is different from the bandwidth size of the legacy terminal device, and the starting position may also be different, so the starting RB and RB number determined by the REDCAP terminal device according to the RIV is different from the starting RB and RB number actually indicated by the RIV by the network device, resulting in a random access failure.

In summary, how the terminal device determines the actual starting RB and the number of RBs of the network device according to the RIV is an urgent problem to be solved.

Disclosure of Invention

The application provides a resource indication method and device, which are used for aligning the understanding of terminal equipment and network equipment to RIV and accurately obtaining resources indicated by RIV.

In a first aspect, the present application provides a resource indication method, which is applicable to a scenario where a first type terminal device and a second type terminal device coexist in a network. The main execution body of the method is the terminal device or a chip or a module in the terminal device, and the terminal device is taken as the main execution body for description. The method comprises the following steps: the method comprises the steps that terminal equipment obtains a resource indicating value from network equipment, wherein the resource indicating value is associated with M, S and L, wherein M is the number of resource blocks contained in a first bandwidth, S is used for determining an index of a starting resource block of first transmission resources, and L is the length of the resource block of the first transmission resources; determining S and/or resource block length L according to the resource indicated value and the analysis mode; the analysis mode is used for analyzing the S and/or L from the resource indicated value; transmitting in the first transmission resource according to the S and/or the L; wherein the maximum value of L is a first threshold; or the maximum value of L is related to M, the maximum value of L is not more than N, and N is the number of resource blocks corresponding to the maximum channel bandwidth supported by the terminal equipment; or, the maximum value of L does not exceed N, and the analytic mode is related to M; the terminal device is a first type terminal device, the first bandwidth is a channel bandwidth in which a second type terminal device operates, and a maximum channel bandwidth supported by the second type terminal device is larger than a maximum channel bandwidth supported by the first type terminal device.

By the method provided by the embodiment of the application, the network equipment can uniformly determine the initial RB used for indicating the resource and the resource indication value of the RB number according to the same method without distinguishing the type of the terminal equipment. For the terminal equipment, when the resource indicating value is obtained, the S and/or the resource block length L can be determined in a preset analysis mode, so that the first transmission resource corresponding to the resource indicating value is determined according to the S and/or the resource block length L. When the maximum value of L is the first threshold value or the maximum value of L is related to M, the complexity of resource allocation can be simplified by limiting the maximum value of the number L of RBs to be allocated. When the maximum value of L is not limited, the maximum value of L does not exceed N, and at the moment, a plurality of analysis modes can exist, and the analysis modes are related to M, so that the flexibility of resource allocation can be improved, the terminal equipment can be ensured to obtain enough resources at one time, data transmission is completed, and data delay is reduced.

In one possible implementation, the index of the starting resource block of the first transmission resource is S; or the index of the starting resource block of the first transmission resource is S1, and S1 is determined according to S and the first offset parameter. When determining the index of the starting resource block of the resource allocated by the network equipment, considering whether the starting RBs of the first bandwidth and the second bandwidth are aligned on frequency, and under the condition of alignment, the index of the starting resource block of the first transmission resource is S; under the condition of misalignment, the index of the starting resource block of the first transmission resource is S1, so that the scheme of the application can be applied to all scenes.

In one possible implementation, the first threshold is determined according to at least one of M and N.

In one possible implementation, the maximum value of L is related to M, including: the maximum value of L is equal to Lmax1 when M belongs to the first range of values; or, when M belongs to the second range of values, the maximum value of L is equal to Lmax2; wherein Lmax2 is less than Lmax1. By establishing the corresponding relation between the maximum value of the L and the M, the realization of the terminal equipment is simplified, the complexity of the terminal equipment is reduced, and the condition that the L indicated by the resource indicated value cannot be obtained according to the resource indicated value determined by the M is avoided.

In one possible implementation, the parsing method is related to M, and includes: m belongs to a first numerical range, and S and/or L are determined according to a first analytic mode; m belongs to a second numerical range, and S and/or L are determined according to a second analysis mode; wherein the first analysis method and the second analysis method are different analysis methods. The analytic mode is related to M, and the resource indicated value can be analyzed according to different analytic modes when M belongs to different numerical value ranges, so that the flexibility of resource allocation can be improved.

In one possible implementation, M belongs to a first range of values, including: m is greater than or equal to the value of the first parameter; alternatively, M belongs to a second range of values, comprising: m is less than the value of the first parameter. The first parameter may be determined according to N, for example, the first parameter may be 2N-2, or 2N-1, etc.

In one possible implementation manner, the first parsing manner includes: s, M and the resource indicated value satisfy a first relation, and L, M and the resource indicated value satisfy a second relation; and/or the second analysis mode comprises the following steps: if L is smaller than or equal to a second threshold value, the S, the M and the resource indicating value meet a first relation, and the L, the M and the resource indicating value meet a second relation; and if L is larger than the second threshold value, the S, the M and the resource indicating value satisfy a third relation, and the L, the M and the resource indicating value satisfy a fourth relation.

In one possible implementation, the resource indication value is carried in a random access response message or downlink control information. At this time, the resource indication value may be used to indicate the resource carrying the message 3, so that the first type terminal device can successfully complete the random access procedure.

In one possible implementation, transmitting in the first transmission resource according to S and/or L includes: sending a message 3 in the random access process to network equipment through a first transmission resource; or, sending a physical uplink shared channel to the network device through the first transmission resource; or, receiving a physical downlink shared channel from the network device through the first transmission resource.

In a possible implementation manner, the terminal device may further obtain at least one of M, an index of a starting resource block of the first bandwidth, an index of a starting resource block of the second bandwidth, and N, where the second bandwidth is a channel bandwidth in which the first type terminal device operates.

In a second aspect, the present application further provides a communication device having any one of the methods provided for implementing the first aspect. The communication device may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible implementation, the communication device includes: a processor configured to enable the communication apparatus to perform the respective functions of the terminal device in the above-illustrated method. The communication device may also include a memory, which may be coupled to the processor, that stores program instructions and data necessary for the communication device. Optionally, the communication apparatus further comprises an interface circuit, which is configured to support communication between the communication apparatus and a device such as a network device.

In one possible implementation manner, the communication device includes corresponding functional modules, which are respectively used for implementing the steps in the above method. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

In a possible implementation manner, the structure of the communication device includes a processing unit and a communication unit, and these units may perform corresponding functions in the above method example, specifically refer to the description in the method provided in the first aspect, and are not described herein again.

In a third aspect, the present application provides a resource indication method, which is applicable to a scenario where a first type terminal device and a second type terminal device coexist in a network. The main execution body of the method is a network device or a chip or a module in the network device, and the network device is taken as the main execution body for description. The method comprises the following steps: the network equipment determines a resource indication value according to M, S and L, wherein M is the number of resource blocks contained in the first bandwidth, S is used for determining the index of the initial resource block of the first transmission resource, and L is the length of the resource block of the first transmission resource; sending a resource indicated value to the terminal equipment; wherein the maximum value of L is a first threshold; or the maximum value of L is related to M, the maximum value of L is not more than N, and N is the number of resource blocks corresponding to the maximum channel bandwidth supported by the terminal equipment; or, the maximum value of L does not exceed N, and the analytic mode is related to M; the terminal device is a first type terminal device, the first bandwidth is a channel bandwidth in which a second type terminal device operates, and a maximum channel bandwidth supported by the second type terminal device is larger than a maximum channel bandwidth supported by the first type terminal device.

In one possible implementation, the index of the starting resource block of the first transmission resource is S; or the index of the starting resource block of the first transmission resource is S1, and S1 is determined according to S and the first offset parameter.

In one possible implementation, the maximum value of L is related to M, including: the maximum value of L is equal to Lmax1 when M belongs to the first range of values; or, the maximum value of L is equal to Lmax2 when M belongs to the second range of values; where Lmax2 is less than Lmax1.

In one possible implementation, the parsing method is related to M, and includes: m belongs to a first numerical range, and S and/or L are determined according to a first analytic mode; m belongs to a second numerical range, and S and/or L are determined according to a second analytic mode; wherein the first analysis method and the second analysis method are different analysis methods.

In one possible implementation, M belongs to a first range of values, including: m is greater than or equal to the value of the first parameter; alternatively, M belongs to a second range of values, comprising: m is less than the value of the first parameter.

In a possible implementation manner, the resource indication value is carried in the random access response message or the downlink control information.

In one possible implementation manner, the method further includes: and transmitting with the terminal equipment through the first transmission resource.

In one possible implementation manner, the method further includes: receiving a message 3 in a random access process from a terminal device in a first transmission resource; or, receiving a physical uplink shared channel from the terminal device in the first transmission resource; or, receiving a physical downlink shared channel from the terminal device in the first transmission resource.

In one possible implementation, at least one of M, an index of a starting resource block of the first bandwidth, an index of a starting resource block of the second bandwidth, and N is transmitted to the terminal device, where the second bandwidth is a channel bandwidth in which the first type of terminal device operates.

In a fourth aspect, the present application further provides a communication device having a function of implementing any one of the methods provided in the third aspect. The communication device may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one possible implementation, the communication device includes: a processor configured to enable the communication apparatus to perform the respective functions of the network device in the above-illustrated method. The communication device may also include a memory, which may be coupled to the processor, that stores program instructions and data necessary for the communication device. Optionally, the communication apparatus further includes an interface circuit, which is configured to support communication between the communication apparatus and a terminal device or the like.

In one possible implementation, the communication device includes corresponding functional modules, which are respectively used for implementing the steps in the above method. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible implementation manner, the structure of the communication device includes a processing unit and a communication unit, and these units may perform corresponding functions in the foregoing method example, which is specifically referred to the description in the method provided in the first aspect and is not described herein again.

In a fifth aspect, there is provided a communication device comprising a processor and an interface circuit, wherein the interface circuit is configured to receive signals from other communication devices except the communication device and transmit the signals to the processor or send the signals from the processor to other communication devices except the communication device, and the processor is configured to execute computer programs or instructions stored in the memory to implement the method in any possible implementation manner in the first aspect. Optionally, the apparatus further comprises a memory, the memory having stored therein a computer program or instructions.

In a sixth aspect, there is provided a communication device comprising a processor and an interface circuit, wherein the interface circuit is configured to receive signals from other communication devices except the communication device and transmit the signals to the processor or transmit the signals from the processor to other communication devices except the communication device, and the processor is configured to execute computer programs or instructions stored in the memory to implement the method in any possible implementation manner of the third aspect. Optionally, the apparatus further comprises a memory, the memory having stored therein a computer program or instructions.

In a seventh aspect, a computer-readable storage medium is provided, in which a computer program or instructions are stored, and when the computer program or instructions are run on a computer, the computer is enabled to implement the method in any possible implementation manner in the foregoing first aspect.

In an eighth aspect, a computer-readable storage medium is provided, in which a computer program or instructions are stored, which, when run on a computer, cause the computer to implement the method in any possible implementation manner of the third aspect.

In a ninth aspect, there is provided a computer program product having computer readable instructions stored thereon, which, when run on a computer, cause the computer to implement the method of any possible implementation of the first aspect.

A tenth aspect provides a computer program product having computer readable instructions stored thereon, which, when run on a computer, cause the computer to implement the method of any possible implementation of the third aspect.

In an eleventh aspect, a chip is provided, the chip includes a processor and may further include a memory, and the processor is coupled with the memory and configured to execute a computer program or instructions stored in the memory, so that the chip implements the method in any possible implementation manner in the foregoing first aspect.

In a twelfth aspect, a chip is provided, the chip includes a processor, and may further include a memory, the processor is coupled with the memory, and is configured to execute a computer program or instructions stored in the memory, so that the chip implements the method in any possible implementation manner in the foregoing third aspect.

In a thirteenth aspect, a communication system is provided, which comprises the apparatus (e.g. terminal device) of the second aspect and the apparatus (e.g. network device) of the fourth aspect.

Drawings

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application;

fig. 2 is a schematic diagram of an initial access provided in an embodiment of the present application;

FIG. 3 is a schematic representation of an SSB provided by an embodiment of the present application;

fig. 4 is a schematic flow chart of a random access procedure provided in an embodiment of the present application;

fig. 5 is a schematic diagram of a channel bandwidth according to an embodiment of the present application;

fig. 6 is a schematic diagram of another channel bandwidth provided in the embodiment of the present application;

fig. 7 is a schematic flowchart of a resource indication method according to an embodiment of the present application;

fig. 8 is a schematic diagram of a channel bandwidth provided in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: long Term Evolution (LTE) system, NR system, future communication system, and the like, which are not limited herein.

In the embodiment of the present application, the terminal device may be a device with a wireless transceiving function, which may be deployed on land, including indoors or outdoors, handheld, or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a User Equipment (UE), wherein the UE includes a handheld device, a vehicle-mounted device, a wearable device, or a computing device having wireless communication functionality. Illustratively, the UE may be a mobile phone (mobile phone), a tablet computer, or a computer with wireless transceiving function. The terminal device may also be a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, and the like. In the embodiment of the present application, the apparatus for implementing the function of the terminal device may also be an apparatus capable of supporting the terminal device to implement the function, for example, a system on chip, where the apparatus may be installed in the terminal, and the system on chip may be formed by a chip, and may also include the chip and other discrete devices.

The terminal device in the present application may be a first type terminal device or a second type terminal device, and the first type terminal device may refer to a low capability (redcapability) terminal device, or the first type terminal device may also refer to a low capability terminal device, a Reduced capability terminal device, redcapability UE, reduced capability UE, narrowband NR (narrow-band NR, NB-NR) UE, and the like. The second type terminal device may refer to a legacy capability or a normal capability or a high capability terminal device, and may also be referred to as a legacy (legacy) terminal device or a normal (normal) terminal device or an enhanced mobile broadband (eMBB) terminal device, and the like. The first type of terminal device and the second type of terminal device may be provided with, but not limited to, at least one of the following distinguishing features:

1. the bandwidth capabilities differ, for example, the bandwidth supported by the first type of terminal device is less than the bandwidth supported by the second type of terminal device.

2. The number of transceiving antennas is different, for example, the number of transceiving antennas supported by the first type terminal device is smaller than the number of transceiving antennas supported by the second type terminal device.

3. The uplink maximum transmission power is different, for example, the uplink maximum transmission power supported by the first type terminal device is smaller than the uplink maximum transmission power supported by the second type terminal device.

4. The protocol versions are different. For example, the first type of terminal device may be a terminal device in NR version 17 (release-17, rel-17) or in later versions of NR Rel-17. The second type of terminal device may be, for example, a terminal device in NR version 15 (release-15, rel-15) or NR version 16 (release-16, rel-16). The second type of terminal equipment may also be referred to as NR legacy (NR legacy) terminal equipment.

5. The processing power for the data is different. For example, the minimum time delay between the reception of the downlink data and the transmission of the feedback to the downlink data by the first type terminal device is greater than the minimum time delay between the reception of the downlink data and the transmission of the feedback to the downlink data by the second type terminal device; and/or the minimum time delay between the first type terminal equipment sending the uplink data and receiving the feedback of the uplink data is larger than the minimum time delay between the second type terminal equipment sending the uplink data and receiving the feedback of the uplink data.

6. A number of resources supported or configured, which may be an RB, a Resource Element (RE), a subcarrier, an RB group, a Resource Element Group (REG) bundle, a control channel element, a subframe, a radio frame, a slot, a mini-slot and/or a number of symbols. The number of resources supported or configured by the first type terminal device and the second type terminal device is different, for example: the number of resources supported by the first type of terminal device is 48RB and the number of resources supported by the second type of terminal device is 96RB.

7. The number of radio frequency channels. The number of the radio frequency channels of the first type terminal device is different from that of the second type terminal device, for example, the number of the radio frequency channels of the first type terminal device may be 1, and the number of the radio frequency channels of the second type terminal device may be 2.

8. Number of hybrid automatic repeat request (HARQ) processes. The number of HARQ processes supported by the first type of terminal device is different from the number of HARQ processes supported by the second type of terminal device, for example: the number of HARQ processes for the first type of terminal device may be 8 and the number of HARQ processes for the second type of terminal device may be 16.

9. Supported peak rate. The maximum peak rates of the first type of terminal device and the second type of terminal device are different, for example: the maximum peak rate supported by the first type of terminal device may be 100Mbps and the peak rate supported by the second type of terminal device may be 200Mbps.

10. And the duplex mode comprises a half duplex mode and a full duplex mode. The first type terminal device and the second type terminal device use different duplex modes, for example: the first type of terminal equipment works in a half-duplex mode, and the second type of terminal equipment works in a full-duplex mode.

In this embodiment of the present application, the network device may be a wireless access device in various systems in a wireless network, for example, the network device may be a Radio Access Network (RAN) node that accesses a terminal device to the wireless network, and may also be referred to as a RAN device or a base station. Examples of some network devices are: a next generation base station (generation Node B, gnnodeb), a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wi-Fi) Access Point (AP), etc. In one network configuration, the network device may be a Centralized Unit (CU) node, a Distributed Unit (DU) node, or a network device including a CU node and a DU node. As an example, the interface between a CU and a DU may be referred to as an F1 interface. Alternatively, the CU node may be a CU-CP (control plane) node, a CU-UP (user plane) node, or a node including a CU-CP node and a CU-UP node. The interface between DU and CU-CP may be referred to as the F1-C interface, and the interface between DU and CU-UP may be referred to as the F1-U interface. The network device may be other means for providing wireless communication functionality for the terminal device, where possible. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. For convenience of description, in this embodiment of the present application, a device that provides a wireless communication function for a terminal device is referred to as a network device. In the embodiment of the present application, the apparatus for implementing the function of the network device may be a network device; may be a module or unit applicable to a network device; or may be an apparatus, such as a system-on-chip, capable of supporting the network device to implement the function, and the apparatus may be installed in the network device or used in cooperation with the network device. Optionally, the DU, CU-CP, and CU-UP may be a functional module, a hardware structure, or a functional module + hardware structure, without limitation.

For the purpose of understanding the embodiments of the present application, a communication system applicable to the embodiments of the present application will be described first. As shown in fig. 1, fig. 1 is a schematic diagram of a network architecture applicable to the embodiment of the present application. In fig. 1, a terminal device may access a wireless network through a network device to obtain services of an external network (e.g., the internet) through the wireless network, or may communicate with other devices through the wireless network, such as may communicate with other terminal devices.

In order to realize data transmission between the terminal device and the network device, the terminal device needs to initially access (initial access) the network device and establish a wireless connection with the network device through a random access process. Taking the NR system as an example, as shown in fig. 2, a flowchart of an initial access process of a terminal device is shown, which may specifically include the following steps.

The method comprises the following steps: the terminal device obtains a synchronization signal block/synchronization signal broadcast channel block (SS/PBCH block, SSB) broadcasted by the network device.

The SSB may include at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH), among others. As shown in fig. 3, in the time domain, 1 SSB occupies 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols (symbol) from 0 to 3, and in the frequency domain, 1 SSB occupies 20 Resource Blocks (RBs) (one RB includes 12 subcarriers), that is, 240 subcarriers, and the subcarriers are numbered from 0 to 239. The PSS is located on the middle 127 subcarriers of symbol 0 and the SSS is located on the middle 127 subcarriers of symbol 2. For protection of PSS and SSS there are respective protection subcarriers. The protection subcarriers are not used for carrying signals, and subcarriers are reserved on both sides of the PSS and the SSS respectively as the protection subcarriers, for example, blank areas on both sides of the SSS in fig. 3 are the protection subcarriers. The PBCH occupies all subcarriers of the

symbols

1 and 3, and occupies a part of subcarriers of the remaining subcarriers of all subcarriers of the symbol 2 except for the subcarriers occupied by the SSS (i.e., subcarriers of the remaining subcarriers except for guard subcarriers). For convenience of description, the OFDM symbol is simply referred to as a symbol in the following description.

Step two: the terminal device acquires a main system information block (MIB) from the PBCH in the SSB.

The terminal device determines a Common Search Space (CSS) from the MIB and determines a control resource set (CORESET) #0. In the NR system, the bandwidth of the CORESET #0 is the bandwidth of the initial downlink bandwidth part (BWP).

Step three: the terminal equipment blindly detects Downlink Control Information (DCI) scrambled by a system information radio network temporary identifier (SI-RNTI) from CORESET #0 and CSS.

Step four: and the terminal equipment acquires system information, such as a system information block 1 (SIB 1), according to the indication of the DCI.

The terminal device may obtain the configuration information of the uplink initial BWP, the configuration information of the random access resource, the configuration information of the paging resource, and the like from SIB1. The frequency range of the upstream BWP is specified by the SIB, and the bandwidth does not exceed the bandwidth capability of legacy terminal devices. In an FDD system, because uplink and downlink transmission work in different frequency bands, an uplink initial BWP and a downlink initial BWP are in different frequency bands; in the TDD system, the central frequency points of the uplink and downlink BWPs are aligned, and the bandwidths may be inconsistent. In addition to the uplink and downlink initial BWP resources, the SIB1 also indicates resources such as a Physical Random Access Channel (PRACH) used for the terminal device to perform random access.

The terminal device may perform a random access procedure through the PRACH resource indicated by the SIB1. Illustratively, as shown in fig. 4, a diagram of a random access procedure in the prior art is shown.

S401, the terminal device sends a preamble (preamble) to the network device through the PRACH.

Here, the preamble may also be referred to as message 1 of the random access procedure.

Illustratively, the preamble may be a sequence that is used to inform the network device of a random access request and enable the network device to estimate a transmission delay between the terminal device and the network device, so that the network device calibrates uplink timing (uplink timing) of the terminal device and informs the terminal device of the calibration information through a Timing Advance (TA) instruction.

S402, the network device sends a Random Access Response (RAR) to the terminal device.

The RAR is also referred to as message 2, and may include an identifier of a received preamble, a Timing Advance (TA), an uplink grant (UL grant), and a temporary cell radio network temporary identifier (TC-RNTI). The TA is used for the terminal equipment to perform uplink timing adjustment to ensure uplink synchronization. The UL grant may indicate a resource location of a Physical Uplink Shared Channel (PUSCH) for transmitting the message 3.

And S403, the terminal equipment sends a message 3 to the network equipment through the resource position indicated by the message 2.

S404, the network device receives the message 3 and sends a conflict resolution (conflict resolution) message to the terminal device with successful access.

The conflict resolution message may also be referred to as message 4. Downlink Control Information (DCI) for scheduling the message 4 is scrambled by TC-RNTI carried in the RAR, and the network device may perform RRC configuration on the terminal device through the message 4.

In the NR protocol, the resource allocation principle of the PUSCH resource allocation type1 (type 1) and the Physical Downlink Shared Channel (PDSCH) resource allocation type1 is as follows:

1) Allocating continuous Resource Blocks (RBs) for the terminal equipment, wherein the number of the allocated resource blocks is within the range of the total RB number of a bandwidth part (BWP) of the terminal equipment;

2) The index of the starting RB of the resource and the length of the resource block (namely the number of continuously allocated RBs) are indicated through the RIV, and the RIV value is determined in the following mode:

if it is satisfied with

Then

If it is not

Then

Wherein,

is the total RB number, RB, of the BWP in which the terminal device is operating _start Is the index of the starting RB, L _RBs Is the length of the resource block and,

is a down-valued operation.

It can be seen from the above formula that the value of RIV is related to the total number of RBs, the index of the starting RB and the length of the resource block. At present, in a scenario where the REDCAP terminal device and the legacy terminal device coexist, if the network device cannot identify the type of the terminal device, the terminal device is defaulted to be the legacy terminal device, and therefore, a value of an RIV sent to the terminal device is determined according to a total RB number of a BWP in which the legacy terminal device operates, which may cause that the REDCAP terminal device cannot determine a starting RB and an RB number actually indicated by the network device according to the RIV.

For example, in the case of the random access procedure described above, if no dedicated PRACH opportunity (RO) is allocated to the REDCAP terminal device and no dedicated preamble is allocated to the REDCAP terminal device, the network device cannot distinguish the type of the terminal device by the preamble. The BWP respectively configured by the network device for the legacy terminal device and the REDCAP terminal device may be as shown in fig. 5 or fig. 6. In fig. 5, the starting RB of the BWP in which the legacy terminal device operates is aligned in frequency with the starting RB of the BWP in which the REDCAP terminal device operates; in fig. 6, the starting RB of the BWP in which the conventional terminal device operates is not aligned in frequency with the starting RB of the BWP in which the REDCAP terminal device operates. In fig. 5 and 6, the total RB number of the BWP in which the conventional terminal device operates is greater than that of the BWP in which the REDCAP terminal device operates.

In conjunction with the above description, since the network device cannot distinguish the type of the terminal device, the RIV included in the UL grant in message 3 transmitted by the network device is determined according to the total RB number of the BWP in which the legacy terminal device operates. If the terminal device initiating the random access is a REDCAP terminal device, since the total RB number of the BWP where the REDCAP terminal device operates is different from the total RB number of the BWP where the conventional terminal device operates, the REDCAP terminal device cannot accurately determine the resource location for transmitting the message 3 according to the RIV in the UL grant. For example, as shown in fig. 5, the resource location indicated by the network device through the RIV is location 1, but the resource location determined by the terminal device according to the RIV may be location 2. Illustratively, if the network device cannot distinguish the type of the terminal device through the preamble (or the random access occasion), the resource allocation of the RAR received by the recap UE, the resource allocation of the message 3 sent by the recap UE, and one or more of the messages 4 received by the recap UE are indicated according to the RIV value of the legacy terminal device; if the network equipment distinguishes the type of the terminal equipment only when the terminal equipment is reported by the capability of the terminal equipment in a connection state, the resource allocation of the RAR received by the RedCap UE, the resource allocation of the message 3 sent by the RedCap UE, the message 4 received by the RedCap UE, the resource allocation of the physical uplink shared channel sent by the RedCap UE, and one or more of the resource allocation of the physical downlink shared channel received by the RedCap UE are indicated according to the RIV value of the traditional terminal equipment.

Therefore, the method is used for aligning the understanding of the terminal device and the network device to the RIV, so that the terminal device can accurately determine the resources indicated by the RIV. The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

In this application, an example of interaction between the network device and the terminal device is described, the operation performed by the network device may be performed by a chip or a module inside the network device, and the operation performed by the terminal device may be performed by a chip or a module inside the terminal device. Fig. 7 is a schematic flowchart of a resource indication method according to an embodiment of the present application. The method comprises the following steps:

s701: the network device determines a resource indication value based on M, S, and L.

Wherein M, N, and L are integers; m is the number of resource blocks included in the first bandwidth, which may also be understood as the total number of resource blocks included in the first bandwidth, where the first bandwidth is a channel bandwidth in which the second type terminal device operates; s is used to determine an index of the starting resource block of the first transmission resource, and specifically may be used to determine an index of the starting resource block of the first transmission resource in the second bandwidth, where S may be an index of the starting resource block of the first transmission resource in the first bandwidth. The second bandwidth is a channel bandwidth in which the first type of terminal device operates. Since the positions of the starting resource block of the first bandwidth and the starting resource block of the second bandwidth may be different, the index of the starting resource block of the first transmission resource in the first bandwidth and the index of the starting resource block of the first transmission resource in the second bandwidth may be the same or different.

L is the resource block length of the first transmission resource, that is, the number of resource blocks included in the first transmission resource, and the first transmission resource is a resource allocated by the network device to the terminal device.

In the embodiment of the present application, when determining the resource indication value, the network device uses the same RIV numbering rule regardless of whether the first type terminal device or the second type terminal device is used, that is, determines the RIV according to M RBs.

S702: the network device sends the resource indication value to the terminal device.

There may be multiple implementations of how the network device specifically sends the resource indication value. In a possible implementation manner, the network device sends a resource indication value to the terminal device through downlink control information; in another possible implementation manner, when the embodiment of the present application is applied to a random access procedure, a network device may indicate, to a terminal device, a resource for carrying a message 3 in the random access procedure through a resource indication value.

S703: the terminal device obtains the resource indication value from the network device.

In this embodiment of the present application, the terminal device may further obtain M, an index of a starting resource block of the first bandwidth, at least one of an index of a starting resource block of the second bandwidth and N, where N is the number of resource blocks corresponding to a maximum channel bandwidth supported by the first type terminal device, N is a total number of resource blocks corresponding to a maximum channel bandwidth supported by the first type terminal device, or N is a number of resource blocks corresponding to a channel bandwidth in which the first type terminal device operates, it may also be understood that N is a total number of resource blocks corresponding to a channel bandwidth in which the first type terminal device operates, and a channel bandwidth in which the first type terminal device operates does not exceed the maximum channel bandwidth supported by the first type terminal device, M and N are both integers greater than 0, and M is greater than N. The channel bandwidth of the first type terminal device is the initial uplink bandwidth part, or the initial downlink bandwidth part, or the uplink bandwidth part, or the downlink bandwidth part of the first type terminal device. The network device may broadcast M and N through system information, and accordingly, the terminal device may acquire M and N through system information, for example, the system information may be MIB, or SIB1, or a field in DCI scheduling PDSCH carrying SIB1.

In this embodiment of the present application, the maximum channel bandwidth supported by the second type terminal device is greater than the maximum channel bandwidth supported by the first type terminal device, for example, the maximum channel bandwidth supported by the second type terminal device is 100MHz, and the maximum channel bandwidth supported by the first type terminal device is 20MHz, or 10MHz, or 5MHz.

S704: and the terminal equipment determines S and/or L according to the resource indication value and the analysis mode, and transmits in the first transmission resource according to the S and/or L.

The parsing manner is used to parse S and/or L from the resource indication value, and the parsing manner may be a formula, a table, a function, or the like, and a specific implementation manner will be described in detail later. The terminal device determines S and/or L according to the resource indication value and the parsing manner, and performs transmission in the first transmission resource according to S and/or L, where the transmission may be sending or receiving, that is: and the terminal equipment determines S and/or L according to the resource indicating value and the analysis mode and sends the physical uplink shared channel in the first transmission resource according to the S and/or L, or the terminal equipment determines S and/or L according to the resource indicating value and the analysis mode and receives the physical downlink shared channel in the first transmission resource according to the S and/or L.

In this embodiment of the present application, how a network device specifically determines a resource indicating value, and correspondingly, how a terminal device determines S and/or L according to the resource indicating value, there may be multiple implementation manners, which are described below respectively.

It should be noted that the embodiment of the present application can be applied to the following two cases, that is, the starting resource block of the channel bandwidth (hereinafter, both referred to as the second bandwidth) in which the terminal device operates is aligned in frequency with the starting resource block of the channel bandwidth (hereinafter, both referred to as the first bandwidth) in which the second type terminal device operates; in case two, the starting resource blocks of the second bandwidth are not aligned in frequency with the starting resource blocks of the first bandwidth. The difference between the first case and the second case mainly lies in the determination manner of the index of the starting resource block of the first transmission resource, and other aspects can be referred to each other.

The implementation mode is as follows:

in the first implementation manner, the maximum value of L is a first threshold, that is, the maximum value of the number L of resource blocks included in the first transmission resource allocated to the terminal device by the network device is the first threshold, and the first threshold may be smaller than N. The first threshold may be configured by the network device, and the first threshold may also be determined according to other manners, for example, the first threshold may be determined according to at least one of M and N. For example, the first threshold is equal to N/2; or the first threshold is equal to M/2; or the first threshold is equal to M/4+ N/4.

As another example, the first threshold may be equal to

The first threshold value may also be equal to

Is or are

The above is merely an example, and the first threshold may also be determined by other manners, which is not described herein again.

In the first implementation manner, the network device defaults that the type of the terminal device is the second type, and at this time, the network device may determine the resource indication value according to the channel bandwidth in which the second type of terminal device operates. For example, when the index of the starting resource block of the first transmission resource allocated by the network device to the terminal device is ST and the resource length of the first transmission resource is L, the network device may determine the resource indication value RIV by:

RIV＝M(L-1)+ST (1)

correspondingly, when the terminal device is the first type terminal device, the terminal device may determine S and/or L according to the first parsing method. In this embodiment of the present application, the first analysis manner may include a first relationship and a second relationship, where S, M and the resource indication value satisfy the first relationship, and L, M and the resource indication value satisfy the second relationship.

The specific form of the first relationship and the second relationship is not limited in the embodiment of the present application, for example, when the network device determines the resource indication value according to formula (1), S may be determined according to M and the resource indication value RIV, where the first relationship may be in the following form:

S＝MOD(RIV，M) (2)

where MOD represents the remainder operation.

When the network device determines the resource indication value according to formula (1), L may also be determined according to M and the resource indication value RIV, and the second relationship may be in the following form:

in this embodiment of the application, the first relationship and the second relationship included in the first parsing manner may be agreed in advance by a protocol, or may be indicated to the terminal device by the network device. Through the first relation and the second relation provided above, under the condition that the resource indication value is determined according to the number M of resource blocks included in the channel bandwidth in which the second type terminal device operates, the first type terminal device can still determine the index of the initial resource block of the resource allocated to the first type terminal device by the network device and the length of the resource block according to the resource indication value, so that under the condition that the first type terminal device and the second type terminal device coexist, the network device performs resource indication to different types of terminal devices according to the same method, and the complexity of the resource indication of the network device is reduced.

In this embodiment, after the terminal device determines L according to the resource indication value, L may be used as the resource length of the first transmission resource. After the terminal device determines S according to the resource indication value, an index of a starting resource block of the first transmission resource may be determined. Specifically, in case one, since the index of the starting resource block of the first bandwidth is the same as the index of the starting resource block of the second bandwidth, the index of the starting resource block of the first transmission resource may be equal to S; in case two, since the index of the starting resource block of the first bandwidth is different from the index of the starting resource block of the second bandwidth, the index of the starting resource block of the first transmission resource may be equal to S1, and S1 is determined according to S and the first offset parameter, specifically, S1 and S satisfy a linear relationship, for example, S1 may satisfy the following formula:

S1＝A*S+P (4)

where P is a first offset parameter, a is a second offset parameter, and a and P may be predefined. For example, a =1.

In the second situation, the starting resource block of the second bandwidth is not aligned with the starting resource block of the first bandwidth in frequency, so that the terminal device can obtain the accurate first transmission resource by compensating the offset of the starting resource block of the second bandwidth and the starting resource block of the first bandwidth in frequency through the first offset parameter in the embodiment of the present application.

In this embodiment, the first offset parameter may be determined according to an index of a starting resource block of the first bandwidth and an index of a starting resource block of the second bandwidth, for example, as shown in fig. 8, the index of the starting resource block of the first bandwidth is ST1, the index of the starting resource block of the second bandwidth is ST2, and the first offset parameter P may satisfy the following formula:

P＝ST2-ST1 (5)

the first offset parameter may be a positive number, 0, or a negative number. When the first offset parameter is 0, it indicates that the starting resource block of the first bandwidth and the starting resource block of the second bandwidth are aligned in frequency.

In this embodiment of the present application, the first offset parameter may be indicated by the network device through higher layer signaling, for example, the higher layer signaling may be SIB1. In another implementation, the first offset parameter may also be determined by the terminal device according to the first bandwidth and the second bandwidth.

Exemplarily, it can be known from the first implementation manner that the network device may carry an RIV through a DCI or RAR UL grant, where a frequency domain resource allocation value field in the DCI or RAR UL grant includes an RIV, and the RIV corresponds to an index S of a starting resource block of a physical uplink shared channel or a physical downlink shared channel and a number L of continuously allocated resource blocks. For a first type of terminal device, e.g., a red map UE, the RIV indicates an index S + S1 of a starting resource block of a physical uplink shared channel or a physical downlink shared channel and a number L of continuously allocated resource blocks, where L does not exceed a first threshold.

By the method provided by the embodiment of the application, the complexity of resource allocation can be simplified by limiting the maximum value of the RB number L of the resource allocation. In addition, when determining the index of the starting resource block of the resource allocated by the network device, the index of the starting resource block is determined according to different modes under different conditions by considering whether the starting RBs of the first bandwidth and the second bandwidth are aligned on frequency, so that the scheme of the application can be applied to all scenes. By the method provided by the embodiment of the application, the network equipment can determine the initial RB and the RB number of the resource allocation according to the method of the embodiment without distinguishing the type of the terminal equipment, so that the coexistence of the traditional terminal equipment and the RedCap UE in the network is facilitated.

The implementation mode two is as follows:

in the second implementation manner, the network device may determine the resource indication value RIV by using the formula (1), which may specifically refer to the description in the first implementation manner, and is not described herein again.

In the second implementation manner, since the resource indication value corresponding to the first transmission resource allocated to the terminal device in the second bandwidth needs to be determined according to the number M of resource blocks included in the first bandwidth, the value of M may affect the maximum value of L indicated by the resource indication value determined by M.

In order to simplify the implementation of the terminal device and reduce the complexity of the terminal device under the condition that the same RIV numbering rule is used for both the first type terminal device and the second type terminal device, the corresponding relation between the maximum value of L and M can be established, and the condition that the L indicated by the resource indicated value cannot be acquired according to the resource indicated value determined by M is avoided.

In implementation two, the maximum value of L may be related to M, and in addition, the maximum value of L does not exceed N. That is, in this implementation, there is a correspondence between the maximum value of L and M. The corresponding relationship between the maximum value of L and M may be agreed by a protocol, or may be configured by a network device, and the embodiment of the present application is not limited.

There may be various implementations of the correspondence between the maximum value of L and M, for example, the correspondence between the maximum value of L and the numerical range to which M belongs may be established. For example, when M belongs to the first range of values, the maximum value of L is equal to Lmax1; when M belongs to the second numerical range, the maximum value of L is equal to Lmax2; lmax2 may be less than Lmax1. There may be no intersection of the first range of values with the second range of values. For example, M belongs to a first range of values, indicating that M is greater than or equal to the value of the first parameter; and when M belongs to the second numerical range, the M is smaller than the value of the first parameter. For another example, when M belongs to the first range of values, it means that M is greater than the value of the first parameter; when M belongs to the second range of values, it means that M is less than or equal to the value of the first parameter. The numerical range to which M belongs can be determined to be the first numerical range or the second numerical range through the relationship between M and the first parameter, and further, the maximum value of L is determined according to the numerical range to which M belongs, that is, the upper limit of the resource indication value is determined according to the number of resource blocks included in the first bandwidth, so that the signaling resource can be saved while the resource indication function is ensured.

The values of the first parameter, lmax1 and Lmax2 may be indicated by the network device, or may be defined by the protocol. For example, the first parameter may be determined according to N, e.g., the first parameter may be 2N-2, or 2N-1, etc.

Lmax1 may be determined from N, e.g., lmax1 may be equal to N. Lmax1 may also be equal to the number of RBs corresponding to the maximum channel bandwidth supported by the first type of terminal device.

Lmax2 may be determined based on at least one of M and N, e.g., lmax2 equals N/2; or Lmax2 equals M/2; or Lmax2 equals to M/4+ N/4. As another example, lmax2 may be equal to

The first threshold value may also be equal to

Is or is

The above is only an example, and the values of the first parameter, the Lmax1, and the Lmax2 may also be determined by other manners, which is not described herein again.

In the second implementation manner, when the terminal device is the first type terminal device, the terminal device may determine S and/or L according to the first parsing manner. The first analysis manner may include a first relationship and a second relationship, and specific forms of the first relationship and the second relationship may refer to the description in the first implementation manner, which is not described herein again.

In the second implementation manner, after the terminal device determines L according to the resource indication value, L may be used as the resource length of the first transmission resource. After the terminal device determines S according to the resource indication value, an index of a starting resource block of the first transmission resource may be determined. Specifically, in case one, the index of the starting resource block of the first transmission resource may be equal to S; in case two, the index of the starting resource block of the first transmission resource may be equal to S1, and S1 is determined according to S and the first offset parameter, which may specifically refer to the description in the implementation manner one and is not described herein again.

Exemplarily, as can be seen from the second implementation manner, the network device may carry an RIV through a DCI or RAR UL grant, where a frequency domain resource allocation value field in the DCI or RAR UL grant includes a RIV, and the RIV corresponds to an index S of a starting resource block of a physical uplink shared channel or a physical downlink shared channel and a number L of continuously allocated resource blocks. For a first type of terminal equipment, such as a red map UE, the RIV indicates an index S + S1 of a starting resource block of a physical uplink shared channel or a physical downlink shared channel and the number L of continuously allocated resource blocks; if M is less than the value of the first parameter, L does not exceed Lmax1; if M is greater than or equal to the value of the first parameter, then L does not exceed Lmax2.

By the method provided by the embodiment of the application, the maximum value of the RB number L for limiting resource allocation is determined according to the numerical range of M. On one hand, the complexity of resource allocation can be simplified, and on the other hand, the limitation of resource allocation can be avoided when M belongs to a specific numerical range. In addition, when determining the index of the starting resource block of the resource allocated by the network device, the index of the starting resource block is determined according to different modes under different conditions by considering whether the starting RBs of the first bandwidth and the second bandwidth are aligned on frequency, so that the scheme of the application can be applied to all scenes. By the method provided by the embodiment of the application, the network equipment does not distinguish the type of the terminal equipment, and the terminal equipment determines the initial RB and the RB number of the resource allocation according to the method of the embodiment, so that the coexistence of the traditional terminal equipment and the RedCap UE in the network is facilitated.

The implementation mode is three:

in the third implementation manner, if M belongs to the first numerical range, for example, M is greater than or equal to the value of the first parameter, the network device may determine the resource indication value RIV through formula (1), and formula (1) may refer to the description in the first implementation manner specifically, and is not described herein again.

If M belongs to a second range of values, e.g., M is less than the value of the first parameter and L is less than or equal to a second threshold value, the network device may determine the resource indication value RIV by equation (1). Here, L may be smaller than the second threshold and not equal to the second threshold.

If M belongs to a second range of values, e.g., M is less than the value of the first parameter, and L is greater than a second threshold (where L may also be equal to the second threshold), the network device may determine the resource indication value RIV by:

RIV＝M(M-L+1)+(M-1-ST) (6)

wherein the second threshold may be determined according to M, e.g., the second threshold may be equal to

In the third implementation manner, it may not be limited whether the maximum value of L is related to M, and the value of L may be determined by the network device according to the data amount that needs to be transmitted by the terminal device, but the maximum value of L does not exceed N.

In the third implementation manner, the analytic manner of determining S and/or L may be related to M, specifically, if M belongs to the first numerical range, determining S and/or L according to the first analytic manner; if M belongs to a second range of values, S and/or L is determined according to a second analytic approach. Wherein the first analysis method and the second analysis method are different analysis methods.

For example, if M belongs to a first range of values, e.g., M is greater than or equal to the value of the first parameter, the terminal device may determine S and/or L in a first analytic manner. When the network device determines the resource indicating value according to formula (1), S, M and the resource indicating value may satisfy the first relationship, where the first relationship may be in the following form:

S＝MOD(RIV，M) (7)

where MOD represents the remainder operation.

When the network device determines the resource indication value according to formula (1), L, M and the resource indication value satisfy a second relationship, and the second relationship may be in the following form:

if M belongs to a second range of values, e.g. M is smaller than the value of the first parameter, the terminal device may determine S and/or L in a second analytic manner. The second parsing means may include a first relationship, a second relationship, a third relationship, and a fourth relationship.

When L is less than or equal to the second threshold, S, M and the resource indication value may satisfy a first relationship, which may refer to the description in formula (7), and is not described herein again; l, M and the resource indication value satisfy a second relationship, which may refer to the description in equation (8), and will not be described herein again.

When L is greater than the second threshold, S, M and the resource indication value may satisfy a third relationship, which may be of the form:

S＝M-MOD(RIV，M)-1 (9)

when L is greater than the second threshold, L, M and the resource indication value satisfy a fourth relationship, which may be in the form of:

in the third implementation manner, if M belongs to the second numerical range, the network device indicates, to the terminal device, a relationship between S, L, M and the resource indication value, for example, when L is less than or equal to the second threshold, the network device may indicate, to the terminal device, that S, M and the resource indication value satisfy the first relationship, and that L, M and the resource indication value satisfy the second relationship; when L is greater than the second threshold, the network device may indicate to the terminal device that S, M and the resource indication value satisfy a third relationship, and that L, M and the resource indication value satisfy a fourth relationship.

In the third implementation manner, if M belongs to the second numerical range, the network device indicates the value range of L to the terminal device, for example, when L is less than or equal to the second threshold, the network device may indicate L to the terminal device that is less than or equal to the second threshold, at this time, the terminal device may determine that S, M and the resource indicating value satisfy the first relationship, and that L, M and the resource indicating value satisfy the second relationship; when L is greater than the second threshold, the network device may indicate to the terminal device that L is greater than the second threshold, at this time, the terminal device may determine that S, M and the resource indication value satisfy a third relationship, and that L, M and the resource indication value satisfy a fourth relationship.

In the third implementation manner, the network device may not indicate the relationship between S, L, M and the resource indication value or the value range of L to the terminal device. The terminal equipment can respectively determine two values of S according to the first relation and the third relation, respectively determine two values of L according to the second relation and the fourth relation, and determine correct values of S and L from the value range of S and the value range of L.

In implementation three, if M belongs to the second range of values, and the maximum value of L is equal to Lmax2, the terminal device may determine L and/or S according to the first parsing scheme. In the third implementation manner, after the terminal device determines L according to the resource indication value, L may be used as the resource length of the first transmission resource. After the terminal device determines S according to the resource indication value, an index of a starting resource block of the first transmission resource may be determined. Specifically, in case one, the index of the starting resource block of the first transmission resource may be equal to S; in case two, the index of the starting resource block of the first transmission resource may be equal to S1, and S1 is determined according to S and the first offset parameter, which may specifically refer to the description in the implementation manner one, and is not described herein again.

For example, in connection with the foregoing description, assuming that the subcarrier spacing of the first bandwidth and the subcarrier spacing of the second bandwidth are both 15kHz, the first bandwidth is 40MHz, the second bandwidth is 20MHz, and assuming that the starting resource block of the first bandwidth and the starting resource block of the second bandwidth are aligned in frequency, i.e. the first offset value is equal to 0. The number M of RBs included in the first bandwidth is 216; the second bandwidth includes a number N of RBs of 106. Under the condition that L and S have different values, the value of the RIV determined by the network device may be as shown in table 1:

TABLE 1

For example, referring to table 1, when the network device allocates resources in the second bandwidth, the starting resource block index S in the first bandwidth is 0, and the resource length is 105, the value of the RIV is 104 × 216.

Assuming that the value of the first parameter is 2n =212, and that M is greater than the value of the first parameter, then S, M and the resource indication value may satisfy a first relationship, and L, M and the resource indication value satisfy a second relationship. Assuming that the first relationship may be formula (7) and the second relationship may be formula (8), the terminal device may determine S according to formula (7) and L according to formula (8).

For example, assuming that the resource indication value RIV obtained by the terminal device is equal to 105 × 216, S and L determined by the terminal device may be:

S＝MOD(105*216，216)＝0；

for another example, assuming that the resource indication value RIV obtained by the terminal device is equal to 4 × 216+3, S and L determined by the terminal device may be:

S＝MOD(4*216+3，216)＝3；

according to the above example, the S determined by the terminal device according to the first relationship, the L determined according to the second relationship, and the S and L actually indicated by the network device through the resource indication value are the same, so that the method provided by the embodiment of the present application can ensure that the network device and the terminal device understand the resource indication value consistently, and the first type of terminal device can accurately determine the resource allocated by the network device according to the resource indication value.

For another example, assuming that the value of the first parameter is 2N, assuming that the subcarrier spacing of the first bandwidth and the subcarrier spacing of the second bandwidth are both 15kHz, the first bandwidth is 25MHz, the second bandwidth is 20MHz, and assuming that the starting resource block of the first bandwidth and the starting resource block of the second bandwidth are aligned in frequency, that is, the first offset value is equal to 0. The number M of RBs included in the first bandwidth is 133; the second bandwidth includes a number N of RBs of 106. Under the condition that L and S have different values, the value of the RIV determined by the network device may be as shown in table 2:

TABLE 2

For example, referring to table 2, when the resource allocated by the network device in the second bandwidth has a starting resource block index S of 0 and a resource length of 68 in the first bandwidth, the value of RIV is 66 × 133+132.

In conjunction with table 2, the value of the first parameter is 2n =266, when M is smaller than the value of the first parameter, assuming that the second threshold value is M/2.

Then, when L is less than or equal to the second threshold, S, M and the resource indication value may satisfy the first relationship, and L, M and the resource indication value satisfy the second relationship. Assuming that the first relationship may be formula (7) and the second relationship may be formula (8), the terminal device may determine S according to formula (7) and L according to formula (8).

Then, when L is greater than the second threshold, S, M and the resource indication value may satisfy a third relationship, and L, M and the resource indication value satisfy a fourth relationship. Assuming that the third relationship may be formula (9) and the fourth relationship may be formula (10), the terminal device may determine S according to formula (9) and L according to formula (10).

For example, assuming that the resource indication value RIV obtained by the terminal device is equal to 4 × 133+3, according to the first relationship and the second relationship, S and L determined by the terminal device may be:

S＝MOD(4*133+3，133)＝3；

for another example, assuming that the resource indication value RIV obtained by the terminal device is equal to 66 × 133+132, according to the third relationship and the fourth relationship, S and L determined by the terminal device may be:

S＝133-MOD(66*133+132，133)-1＝0；

Illustratively, through the third implementation manner, the network device may carry an RIV through a DCI or RAR UL grant, where a frequency domain resource allocation value field in the DCI or RAR UL grant includes a RIV, and the RIV corresponds to an index S of a starting resource block of a physical uplink shared channel or a physical downlink shared channel and a number L of continuously allocated resource blocks. For a first type of terminal device, e.g., a red map UE, the RIV indicates an index S + S1 of a starting resource block of a physical uplink shared channel or a physical downlink shared channel and the number L of continuously allocated resource blocks.

In the embodiment of the application, when the second bandwidth is 20MHz, and the first bandwidth is greater than or equal to 40MHz, the terminal device only needs to determine S and/or L according to the first parsing manner, where the first bandwidth may be 40mhz,50mhz,60mhz,70mhz,80mhz,90mhz, and 100MHz; or, when the second bandwidth is 20MHz corresponding to an RB in a specific subcarrier interval, and the first bandwidth is greater than or equal to 40MHz corresponding to an RB in a specific subcarrier interval, the terminal device determines S and/or L according to the first parsing manner, where the specific subcarrier intervals of the first bandwidth and the second bandwidth are the same, and the first bandwidth may be 40mhz,50mhz,60mhz,70mhz,80mhz,90mhz, and 100MHz. In this embodiment, when the second bandwidth is 20MHz and the first bandwidth is 25MHz or 30MHz, the terminal device determines S and/or L according to the second analysis method; or, when the second bandwidth is 20MHz and the RB corresponds to the specific subcarrier spacing, and the first bandwidth is 25MHz or 30MHz and the RB corresponds to the specific subcarrier spacing, the terminal device determines S and/or L according to the second parsing manner, where the specific subcarrier spacing of the first bandwidth and the second bandwidth is the same.

In the implementation manner, the resource length L of the allocated resource does not need to be limited, and the terminal device can be ensured to obtain enough resources at one time, so that data transmission is completed, and data delay is reduced. In addition, the condition that whether the starting RBs of the first bandwidth and the second bandwidth are aligned in frequency is considered, and the indexes of the starting resource blocks are determined in different modes under different conditions, so that the scheme of the application can be applied to all scenes.

In this embodiment, the terminal device may send data or a message to the network device in the first transmission resource, and may also receive data or a message sent from the network device in the first transmission resource. For example, if the resource indication value is carried by a message 2 in the random access process, the terminal device may send a message 3 in the random access process to the network device through the first transmission resource, and correspondingly, the network device receives the message 3 in the random access process from the terminal device in the first transmission resource. For example, if the resource indication value is carried by the downlink control information, the terminal device may send a physical uplink shared channel to the network device through the first transmission resource, or receive a physical downlink shared channel from the network device through the first transmission resource, and correspondingly, the network device receives the physical uplink shared channel or the physical downlink shared channel from the terminal device in the first transmission resource.

The above-described embodiments may be implemented individually or in combination with each other. In the above, in the different embodiments, the differences of the respective embodiments are described with emphasis, and other contents between the different embodiments may be referred to each other except for the differences. It should be understood that the step numbers of the flowcharts described in the above embodiments are merely an example of an execution flow, and do not limit the execution sequence of the steps, and there is no strict execution sequence between the steps that have no time sequence dependency relationship with each other in this embodiment. In addition, not all the steps illustrated in each flowchart are necessarily required to be performed, and some steps may be added to or deleted from each flowchart according to actual needs.

In order to implement the functions in the method provided by the embodiments of the present application, the access network device, the terminal device, or the communication apparatus may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

The division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional modules in the embodiments of the present application may be integrated into one processor, may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

Similar to the above concept, as shown in fig. 9, the embodiment of the present application further provides an apparatus 900. The communication apparatus 900 may be the terminal device in fig. 1, and is configured to implement the method for the terminal device in the foregoing method embodiment. The communication device may also be the network device in fig. 1, and is configured to implement the method corresponding to the network device in the foregoing method embodiment. The specific functions can be seen from the description of the above method embodiments.

Specifically, the apparatus 900 may include: a processing unit 901 and a communication unit 902. In this embodiment, the communication unit may also be referred to as a transceiver unit, and may include a sending unit and/or a receiving unit, which are respectively configured to perform the steps of sending and receiving by the network device or the terminal device in the foregoing method embodiments. Hereinafter, the communication device according to the embodiment of the present application will be described in detail with reference to fig. 9 to 10.

In some possible implementations, the behavior and functions of the terminal device in the above method embodiment may be implemented by the communication apparatus 900, for example, implementing the method performed by the terminal device in the embodiment of fig. 7. For example, the communication apparatus 900 may be a terminal device, a component (e.g., a chip or a circuit) applied in the terminal device, or a chip set in the terminal device or a part of the chip for performing the related method function. The communication unit 902 may be configured to perform receiving or transmitting operations performed by the terminal device in the embodiment shown in fig. 7, and the processing unit 901 may be configured to perform operations other than transceiving operations performed by the terminal device in the embodiment shown in fig. 7.

In a possible implementation manner, the communication unit 902 is configured to obtain a resource indication value from a network device, where the resource indication value is associated with M, S, and L, where M is a number of resource blocks included in a first bandwidth, S is an index used to determine a starting resource block of a first transmission resource, and L is a resource block length of the first transmission resource;

the processing unit is used for determining S and/or the length L of the resource block according to the resource indicating value and the analysis mode; the analysis mode is used for analyzing S and/or L from the resource indication value; the communication unit is used for transmitting in the first transmission resource according to the S and/or the L;

wherein the maximum value of L is a first threshold; or the maximum value of the L is related to the M, and the maximum value of the L is not more than N, wherein N is the number of resource blocks corresponding to the maximum channel bandwidth supported by the terminal equipment; or, the maximum value of L does not exceed N, and the analytic mode is related to M;

the terminal device is a first type terminal device, the first bandwidth is a channel bandwidth in which a second type terminal device operates, and a maximum channel bandwidth supported by the second type terminal device is larger than a maximum channel bandwidth supported by the first type terminal device.

In a possible implementation manner, an index of a starting resource block of the first transmission resource is S; or the index of the starting resource block of the first transmission resource is S1, and S1 is determined according to S and the first offset parameter.

In one possible implementation, the maximum value of L is related to M, including:

when M belongs to a first numerical range, the maximum value of L is equal to Lmax1;

or, when M belongs to a second range of values, the maximum value of L is equal to Lmax2;

wherein the Lmax2 is less than the Lmax1.

In a possible implementation manner, the parsing manner is related to the M, and includes:

the M belongs to a first numerical range, and S and/or L are determined according to a first analytic mode;

the M belongs to a second numerical range, and S and/or L are determined according to a second analysis mode;

wherein the first analysis method and the second analysis method are different analysis methods.

In one possible implementation, the M belongs to a first range of values, including: said M is greater than or equal to the value of the first parameter; alternatively, the M belongs to a second range of values, comprising: the M is less than the value of the first parameter.

In a possible implementation manner, the first parsing manner includes:

the S, the M and the resource indicated value satisfy a first relationship, and the L, the M and the resource indicated value satisfy a second relationship; and/or the second analysis mode comprises the following steps: if L is less than or equal to a second threshold value, the S, the M and the resource indicating value satisfy a first relation, and the L, the M and the resource indicating value satisfy a second relation;

if L is larger than a second threshold value, the S, the M and the resource indicated value satisfy a third relation, and the L, the M and the resource indicated value satisfy a fourth relation.

In some possible embodiments, the behavior and the function of the network device in the foregoing method embodiment may be implemented by the communication apparatus 900, for example, implementing the method performed by the first access network device or the second access network device in the embodiment of fig. 7. For example, the communication apparatus 900 may be an access network device, a component (e.g., a chip or a circuit) applied in the access network device, or a chip set in a terminal device or a part of a chip for performing a function of the related method. The communication unit 902 may be configured to perform receiving or transmitting operations performed by the first access network device or the second access network device in the embodiment shown in fig. 7, and the processing unit 901 may be configured to perform operations other than transceiving operations performed by the first access network device or the second access network device in the embodiment shown in fig. 7.

In a possible implementation manner, the communication unit 902 is a processing unit configured to determine a resource indication value according to M, S, and L, where M is a number of resource blocks included in a first bandwidth, S is an index of a starting resource block of a first transmission resource, and L is a resource block length of the first transmission resource; a communication unit, configured to send the resource indication value to a terminal device; wherein the maximum value of L is a first threshold; or the maximum value of the L is related to the M, and the maximum value of the L is not more than N, wherein N is the number of resource blocks corresponding to the maximum channel bandwidth supported by the terminal equipment; or the maximum value of L does not exceed N, and the analysis mode is related to M; the terminal device is a first type terminal device, the first bandwidth is a channel bandwidth in which a second type terminal device operates, and a maximum channel bandwidth supported by the second type terminal device is greater than a maximum channel bandwidth supported by the first type terminal device.

In a possible implementation manner, an index of a starting resource block of the first transmission resource is S; or, the index of the starting resource block of the first transmission resource is S1, and S1 is determined according to S and the first offset parameter.

In one possible implementation, the maximum value of L is related to M, including: when M belongs to a first numerical range, the maximum value of L is equal to Lmax1; or, when M belongs to a second range of values, the maximum value of L is equal to Lmax2; wherein Lmax2 is smaller than Lmax1.

In one possible implementation, the parsing method is related to the M, and includes:

In a possible implementation manner, the first parsing manner includes:

the S, the M and the resource indicated value satisfy a first relationship, and the L, the M and the resource indicated value satisfy a second relationship; and/or the second analysis mode comprises the following steps:

if L is less than or equal to a second threshold value, the S, the M and the resource indicating value satisfy a first relation, and the L, the M and the resource indicating value satisfy a second relation; if L is larger than a second threshold value, the S, the M and the resource indicated value satisfy a third relation, and the L, the M and the resource indicated value satisfy a fourth relation.

It should be understood that the description of the apparatus embodiment corresponds to the description of the method embodiment, and the apparatus 900 may also be referred to for the apparatus structure for implementing the terminal device and the access network device in fig. 7, so that the content that is not described in detail may refer to the above method embodiment, and is not described here again for brevity.

The communication unit may also be referred to as a transceiver, a transceiving means, etc. A processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Alternatively, a device in the communication unit 902 for implementing a receiving function may be regarded as a receiving unit, and a device in the communication unit 902 for implementing a sending function may be regarded as a sending unit, that is, the communication unit 902 includes a receiving unit and a sending unit. A communication unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

The above are merely examples, and the processing unit 901 and the communication unit 902 may also perform other functions, and for a more detailed description, reference may be made to the related description in the method embodiment shown in fig. 7, which is not repeated herein.

As shown in fig. 10, which is a device 1000 provided in the embodiment of the present application, the device shown in fig. 10 may be implemented as a hardware circuit of the device shown in fig. 9. The communication device can be applied to the flow chart shown in the foregoing, and performs the functions of the terminal device or the network device in the above method embodiment. For convenience of explanation, fig. 10 shows only the main components of the communication apparatus.

As shown in fig. 10, the communication device 1000 includes a processor 1010 and an interface circuit 1020. The processor 1010 and the interface circuit 1020 are coupled to each other. It will be appreciated that the interface circuit 1020 may be a transceiver or an input-output interface. Optionally, the communications apparatus 1000 may further include a memory 1030 for storing instructions executed by the processor 1010 or for storing input data required by the processor 1010 to execute the instructions or for storing data generated by the processor 1010 after executing the instructions.

When the communication device 1000 is configured to implement the method shown in fig. 7, the processor 1010 is configured to implement the functions of the processing unit 901 described above, and the interface circuit 1020 is configured to implement the functions of the communication unit 902 described above.

When the communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the method embodiment. The terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, wherein the information is sent to the terminal device by the access network device; or, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device, where the information is sent by the terminal device to the access network device.

When the communication device is a chip applied to an access network device, the access network device chip implements the functions of the network device in the above method embodiments. The access network device chip receives information from other modules (such as a radio frequency module or an antenna) in the access network device, wherein the information is sent to the network device by the terminal device; or, the access network device chip sends information to other modules (such as a radio frequency module or an antenna) in the access network device, where the information is sent by the access network device to the terminal device.

It is understood that the Processor in the embodiments of the present Application may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), other Programmable logic device, or a transistor logic device. The general purpose processor may be a microprocessor, but may be any conventional processor.

In embodiments of the present application, the Memory may be a Random Access Memory (RAM), a flash Memory, a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a register, a hard disk, a removable hard disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a network device or a terminal device. The processor and the storage medium may reside as discrete components in a network device or a terminal device.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A resource indication method is applied to a communication device, wherein the communication device is a terminal device or a chip in the terminal device, and the method comprises the following steps:

obtaining a resource indication value from a network device, wherein the resource indication value is associated with M, S and L, wherein M is the number of resource blocks included in a first bandwidth, S is used for determining an index of a starting resource block of a first transmission resource, and L is the length of the resource block of the first transmission resource;

determining S and/or resource block length L according to the resource indicated value and the analysis mode; the analysis mode is used for analyzing S and/or L from the resource indication value;

transmitting in the first transmission resource according to the S and/or L;

wherein the maximum value of L is a first threshold; or the like, or a combination thereof,

the maximum value of the L is related to the M, the maximum value of the L is not more than N, and the N is the number of resource blocks corresponding to the maximum channel bandwidth supported by the terminal equipment; or the like, or a combination thereof,

the maximum value of L does not exceed N, and the analytic mode is related to M;

the terminal device is a first type terminal device, the first bandwidth is a channel bandwidth in which a second type terminal device operates, and a maximum channel bandwidth supported by the second type terminal device is greater than a maximum channel bandwidth supported by the first type terminal device.

2. The method of claim 1, wherein an index of a starting resource block of the first transmission resource is S;

or the index of the starting resource block of the first transmission resource is S1, and S1 is determined according to S and the first offset parameter.

3. The method of claim 1 or 2, wherein the first threshold is determined according to at least one of M and N.

4. The method of claim 1 or 2, wherein the maximum value of L is related to M, comprising:

wherein Lmax2 is smaller than Lmax1.

5. The method according to claim 1 or 2, wherein the analytic style is related to the M, comprising:

the M belongs to a second numerical range, and S and/or L are determined according to a second analytic mode;

6. The method of claim 4 or 5, wherein M belongs to a first range of values comprising:

said M is greater than or equal to the value of a first parameter;

alternatively, the M belongs to a second range of values, including:

the M is less than the value of the first parameter.

7. The method of claim 5, wherein the first parsing comprises:

the S, the M and the resource indicated value satisfy a first relationship, and the L, the M and the resource indicated value satisfy a second relationship;

and/or the second analysis mode comprises the following steps:

if L is less than or equal to a second threshold value, the S, the M and the resource indicating value satisfy a first relation, and the L, the M and the resource indicating value satisfy a second relation;

8. The method according to any of claims 1 to 7, wherein the resource indication value is carried in a random access response message or downlink control information.

9. The method of claim 8, wherein the transmitting in the first transmission resource according to the S and/or L comprises:

sending a message 3 in a random access process to the network equipment through the first transmission resource; or,

sending a physical uplink shared channel to the network equipment through the first transmission resource; or,

and receiving a physical downlink shared channel from the network equipment through the first transmission resource.

10. A resource indication method is applied to a communication device, wherein the communication device is a network device or a chip in the network device, and the method comprises:

determining a resource indication value according to M, S and L, wherein M is the number of resource blocks contained in a first bandwidth, S is used for determining the index of a starting resource block of a first transmission resource, and L is the length of the resource block of the first transmission resource;

sending the resource indicated value to a terminal device;

wherein the maximum value of L is a first threshold; or,

the maximum value of the L is related to the M, the maximum value of the L is not more than N, and the N is the number of resource blocks corresponding to the maximum channel bandwidth supported by the terminal equipment; or,

the maximum value of L does not exceed N, and the analysis mode is related to M;

11. The method of claim 10, wherein an index of a starting resource block of the first transmission resource is S;

12. The method according to claim 10 or 11, wherein the first threshold is determined according to at least one of M and N.

13. The method of claim 10 or 11, wherein the maximum value of L is related to M, comprising:

wherein the Lmax2 is less than the Lmax1.

14. The method according to claim 10 or 11, wherein the analytic style is related to the M, comprising:

15. The method of claim 13 or 14, wherein M belongs to a first range of values comprising:

said M is greater than or equal to the value of the first parameter;

alternatively, the M belongs to a second range of values, comprising:

the M is less than the value of the first parameter.

16. The method of claim 14, wherein the first parsing comprises:

and/or the second analysis mode comprises the following steps:

17. The method according to any of claims 10 to 16, wherein the resource indication value is carried in a random access response message or downlink control information.

18. The method of claim 17, further comprising:

receiving a message 3 in a random access process from the terminal equipment in the first transmission resource; or,

receiving a physical uplink shared channel from the terminal equipment in the first transmission resource; or,

and receiving a physical downlink shared channel from the terminal equipment in the first transmission resource.

19. A communications apparatus, comprising:

a communication unit, configured to obtain a resource indication value from a network device, where the resource indication value is associated with M, S, and L, where M is a number of resource blocks included in a first bandwidth, S is an index of a starting resource block of a first transmission resource, and L is a resource block length of the first transmission resource;

the processing unit is used for determining S and/or the length L of the resource block according to the resource indicating value and the analysis mode; the analysis mode is used for analyzing S and/or L from the resource indication value;

the communication unit is used for transmitting in the first transmission resource according to the S and/or the L;

wherein the maximum value of L is a first threshold; or,

the maximum value of the L is related to the M, the maximum value of the L does not exceed N, and the N is the number of resource blocks corresponding to the maximum channel bandwidth supported by the terminal equipment; or,

20. The apparatus of claim 19, wherein a starting resource block of the first transmission resource has an index of S;

or, the index of the starting resource block of the first transmission resource is S1, and S1 is determined according to S and the first offset parameter.

21. The apparatus of claim 19 or 20, wherein the first threshold is determined according to at least one of M and N.

22. The apparatus of claim 19 or 20, wherein the maximum value of L is related to M, comprising:

wherein Lmax2 is smaller than Lmax1.

23. The apparatus according to claim 19 or 20, wherein the parsing is related to the M, and comprises:

24. The apparatus of claim 22 or 23, wherein M belongs to a first range of values comprising:

said M is greater than or equal to the value of a first parameter;

alternatively, the M belongs to a second range of values, comprising:

the M is less than the value of the first parameter.

25. The apparatus of claim 23, wherein the first parsing comprises:

and/or the second analysis mode comprises the following steps:

26. A communications apparatus, comprising:

a processing unit, configured to determine a resource indication value according to M, S, and L, where M is a number of resource blocks included in a first bandwidth, S is used to determine an index of a starting resource block of a first transmission resource, and L is a resource block length of the first transmission resource;

a communication unit, configured to send the resource indication value to a terminal device;

27. The apparatus of claim 26, wherein a starting resource block of the first transmission resource has an index of S;

28. The apparatus of claim 26 or 27, wherein the first threshold is determined according to at least one of M and N.

29. The apparatus of claim 26 or 27, wherein the maximum value of L is related to M, comprising:

wherein the Lmax2 is less than the Lmax1.

30. The apparatus according to claim 26 or 27, wherein the parsing is related to the M and comprises:

31. The apparatus of claim 29 or 30, wherein M belongs to a first range of values comprising:

said M is greater than or equal to the value of a first parameter;

alternatively, the M belongs to a second range of values, comprising:

the M is less than the value of the first parameter.

32. The apparatus of claim 30, wherein the first parsing comprises:

and/or the second analysis mode comprises the following steps:

33. A communication device comprising a processor, interface circuitry, and a memory;

the processor configured to execute the computer program or instructions stored in the memory, so that the communication device implements the method of any one of claims 1 to 9 or 10 to 18.

34. A communication device comprising a processor and a memory;

the processor configured to execute the computer program or instructions stored in the memory to cause the communication device to implement the method of any one of claims 1 to 9 or 10 to 18.

35. A computer-readable storage medium, in which a computer program or instructions are stored which, when run on a computer, cause the computer to carry out the method of any one of claims 1 to 9 or cause the computer to carry out the method of any one of claims 10 to 18.