CN109391437B

CN109391437B - Communication method and apparatus

Info

Publication number: CN109391437B
Application number: CN201710687831.4A
Authority: CN
Inventors: 焦淑蓉; 彭金磷; 张鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2021-02-12
Anticipated expiration: 2037-08-11
Also published as: WO2019029624A1; CN109391437A

Abstract

The application provides a communication method and equipment, wherein the method comprises the following steps: the network equipment determines the MCS of communication with the terminal, determines the granularity of frequency domain resources allocated to the terminal for communication according to the MCS, and sends control information to the terminal. The terminal determines the granularity of the frequency domain resources for communication allocated to the terminal by the network equipment according to the MCS domain of the control information, analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resources, and determines the information of the frequency domain resources for communication of the terminal. Therefore, the network device dynamically adjusts the granularity of the frequency domain resource allocated for communication to the terminal according to the MCS communicated with the terminal, and the terminal obtains the granularity of the frequency domain resource according to the MCS domain so as to accurately obtain the information of the frequency domain resource used for communication. The problem that in the prior art, the information of the frequency domain resources in the resource allocation domain occupies more bit positions is solved, the increase of the information size of the control channel is avoided, and the reliability of the URLLC service is ensured.

Description

Communication method and apparatus

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a communication method and equipment.

Background

Mobile communication technology has profoundly changed people's lives, but the pursuit of higher performance mobile communication technology has never stopped. In order to cope with explosive mobile data traffic increase, massive mobile communication device connection, and various new services and application scenarios which are continuously emerging, the fifth generation (5G) communication system has been developed. The International Telecommunications Union (ITU) defines three broad classes of application scenarios for 5G and future communication systems: enhanced mobile broadband (eMBB), high-reliability and low-latency communications (URLLC), and massive machine type communications (mtc). The URLLC service has a very high requirement on delay, and the transmission delay requirement is within 0.5 milliseconds (ms) without considering reliability; on the premise of reaching 99.999 percent of reliability, the transmission delay is required to be within 1 ms.

When the quality of a physical channel is poor or the required data can be received with high reliability during the transmission of the URLLC service, more physical resources and a low coding rate need to be adopted to transmit the data of the URLLC service, and when the URLLC service needs to be transmitted under the requirement of low delay, the transmission time of the URLLC service is shorter, so that more resources need to be allocated in the frequency domain. If the resource allocation granularity in the prior art is still adopted, this may cause that the indication information for indicating the allocated frequency domain resource occupies more bits, that is, the information size of the control channel is increased, which may cause a decrease in reliability, and further affect reliable reception of data of the URLLC service.

Disclosure of Invention

The embodiment of the application provides a communication method and device, which are used for avoiding increasing the information size of a control channel and ensuring the reliability of a URLLC service.

In a first aspect, an embodiment of the present application provides a communication method, where the method is applied to a network device, and includes:

determining an MCS for communication with a terminal;

determining granularity of frequency domain resources allocated to the terminal for communication according to the determined MCS;

and sending control information to the terminal, wherein a resource allocation domain of the control information carries information of frequency domain resources allocated to the terminal, and the granularity of the allocated frequency resources is the determined granularity.

In one possible design, determining a granularity at which frequency domain resources for communication are allocated to the terminal based on the determined MCS includes:

when the determined MCS belongs to a first MCS set, determining the granularity of frequency domain resources allocated to the terminal for communication as a first granularity;

when the determined MCS belongs to a second MCS set, determining the granularity of frequency domain resources allocated to the terminal for communication as a second granularity;

wherein the first granularity is greater than the second granularity, and any one MCS in the first MCS set is different from any one MCS in the second MCS set.

In one possible design, the method further includes: and transmitting the index of the determined MCS to a terminal.

In one possible design, when the determined MCS belongs to a third MCS set, an index of the determined MCS occupies K bit positions preset in the resource allocation domain, where K is an integer greater than or equal to 1, and the third MCS set is a subset of the first MCS set.

In one possible design, bit positions other than the K bit positions in the resource allocation domain are used to indicate information of frequency domain resources.

In one possible design, the method further includes: determining that the first granularity includes N Resource Blocks (RBs) when the determined MCS belongs to the first MCS set; wherein N is greater than M, which is the number of RBs in the second granularity;

wherein the information of the frequency domain resources with the second granularity occupies all bit positions in the resource allocation domain.

In one possible design, the method further includes:

and when the determined MCS belongs to the third MCS set, filling a preset index in the MCS domain of the control information, wherein the preset index is used for indicating the index of the determined MCS needing to be analyzed from the resource allocation domain.

In one possible design, the preset index is specifically an index number 0 or a reserved MCS index number.

In one possible design, the index of the determined MCS occupies an MCS field in the control information when the determined MCS does not belong to a third MCS set.

In a second aspect, an embodiment of the present application provides a communication method, where the method is applied to a terminal, and includes:

receiving control information sent by network equipment; the resource allocation domain of the control information carries information of frequency domain resources allocated to the terminal;

determining the granularity of frequency domain resources used for communication allocated to the terminal by the network equipment according to the MCS domain of the control information;

and analyzing the resource allocation domain of the control information according to the granularity of the frequency domain resources, and determining the information of the frequency domain resources used for communication by the terminal.

In one possible design, the determining, according to the MCS field of the control information, the granularity at which the network device allocates frequency domain resources for communication to the terminal includes:

when the index indicated by the MCS domain belongs to a first MCS index set, determining the granularity of frequency domain resources allocated to the terminal by the network equipment for communication to be a first granularity;

when the index indicated by the MCS domain belongs to a second MCS index set, determining the granularity of the frequency domain resource allocated to the terminal by the network equipment for communication to be a second granularity;

wherein the first granularity is different from the second granularity, and an intersection of the first MCS index set and the second MCS index set is an empty set.

In one possible design, any one of the MCS indices in the first MCS index set is smaller than any one of the MCS indices in the second MCS index set, and the first granularity is larger than the second granularity.

In one possible design, the method further includes: and determining the index of the MCS used for the terminal to communicate with the network equipment according to the MCS domain.

In one possible design, the determining an index of an MCS for communicating with the network device based on the MCS field comprises:

when the index indicated by the MCS domain belongs to a third MCS index set, determining the index of the MCS used for the terminal to communicate with the network equipment according to the information on the K preset bit positions in the resource allocation domain, wherein the third MCS index set is a subset of the first MCS index set;

when the index indicated by the MCS domain does not belong to the third MCS index set, the index indicated by the MCS domain is an index of the MCS communicated with the network device.

In one possible design, the method further includes:

determining that the first granularity comprises N RBs when the index indicated by the MCS domain belongs to a first MCS index set; wherein N is greater than M, which is the number of RBs in the second granularity;

In one possible design, when the index indicated by the MCS field belongs to the third MCS index set, the index indicated by the MCS field is specifically used for indicating that the index of the MCS used for the terminal to communicate with the network device is parsed from the resource allocation field.

In one possible design, the third MCS index set includes index 0.

In a possible design, the determining, according to the MCS field of the control information, a granularity at which the network device allocates a frequency domain resource for communication to the terminal, specifically further includes:

when the index indicated by the MCS domain belongs to a fourth MCS index set, determining that the granularity at which the network device allocates the frequency domain resource for communication to the terminal is the first granularity, where an intersection of the fourth MCS index set and the first MCS index set is an empty set, and an intersection of the fourth MCS index set and the second MCS index set is also an empty set.

In one possible design, the method further includes:

when the index indicated by the MCS belongs to the fourth MCS index set, determining the index of the MCS used for the terminal to communicate with the network equipment according to the information on the preset K bit positions in the resource allocation domain.

In one possible design, any one of the MCS indices in the first MCS index set is greater than any one of the MCS indices in the second MCS index set, and the first granularity is greater than the second granularity.

In one possible design, the method further includes:

when the index indicated by the MCS belongs to the second MCS index set, the index of the MCS used for the terminal to communicate with the network equipment is determined according to the information on the preset K bit positions in the resource allocation domain.

In a third aspect, an embodiment of the present application provides a communication device, including:

the processing module is used for determining the MCS communicated with the terminal; determining the granularity of frequency domain resources allocated to the terminal for communication according to the determined MCS;

a sending module, configured to send control information to the terminal, where a resource allocation domain of the control information carries information of frequency domain resources allocated to the terminal, and a granularity of the allocated frequency resources is the determined granularity.

In one possible design, the processing module is specifically configured to: when the determined MCS belongs to a first MCS set, determining the granularity of frequency domain resources allocated to the terminal for communication as a first granularity; when the determined MCS belongs to a second MCS set, determining the granularity of frequency domain resources allocated to the terminal for communication as a second granularity;

In one possible design, the sending module is further configured to send an index of the determined MCS to a terminal.

In one possible design, the processing module is further configured to determine that the first granularity includes N RBs when the determined MCS belongs to the first MCS set; wherein N is greater than M, which is the number of RBs in the second granularity;

In a possible design, the processing module is further configured to, when the determined MCS belongs to the third MCS set, fill a preset index in an MCS field of the control information, where the preset index is used to indicate an index of the determined MCS to be parsed from the resource allocation field.

The communication device according to the third aspect may be a network device, or may be a chip inside the network device.

In a fourth aspect, an embodiment of the present application provides a communication device, including:

the receiving module is used for receiving control information sent by the network equipment; the resource allocation domain of the control information carries information of frequency domain resources allocated to the terminal;

a processing module, configured to determine, according to the MCS field of the control information, a granularity at which the network device allocates a frequency domain resource for communication to the terminal; and the terminal analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resource and determines the information of the frequency domain resource used by the terminal for communication.

In one possible design, the processing module is specifically configured to: when the index indicated by the MCS domain belongs to a first MCS index set, determining the granularity of frequency domain resources allocated to the terminal by the network equipment for communication to be a first granularity; when the index indicated by the MCS domain belongs to a second MCS index set, determining the granularity of the frequency domain resource allocated to the terminal by the network equipment for communication to be a second granularity;

In one possible design, the processing module is further configured to determine an index of an MCS used for the communication device to communicate with the network device according to the MCS field.

In one possible design, the processing module is specifically configured to:

when the index indicated by the MCS domain belongs to a third MCS index set, determining the index of the MCS used for the communication equipment and the network equipment according to the information on the K preset bit positions in the resource allocation domain, wherein the third MCS index set is a subset of the first MCS index set;

when the index indicated by the MCS domain does not belong to a third MCS index set, determining the index indicated by the MCS domain as the index of the MCS used for the communication device to communicate with the network device.

In one possible design, the processing module is further configured to determine that the first granularity includes N RBs when the index indicated by the MCS field belongs to a first MCS index set; wherein N is greater than M, which is the number of RBs in the second granularity;

In one possible design, when the index indicated by the MCS field belongs to the third MCS index set, the index indicated by the MCS field is specifically used to indicate that the index of the MCS used for the communication device to communicate with the network device is parsed from the resource allocation field.

In one possible design, the third MCS index set includes index 0.

In one possible design, the processing module is specifically configured to:

In one possible design, the processing module is further configured to: when the index indicated by the MCS belongs to the fourth MCS index set, determining the index of the MCS used for the communication between the communication device and the network device according to the information on the preset K bit positions in the resource allocation domain.

In one possible design, the processing module is further configured to: when the index indicated by the MCS belongs to the second MCS index set, the index of the MCS used for the communication between the communication equipment and the network equipment is determined according to the information on the preset K bit positions in the resource allocation domain.

The communication device according to the fourth aspect may be a terminal, or may be a chip inside the terminal.

In a fifth aspect, an embodiment of the present application provides a network device, including: a processor and a transceiver; the processor and the transceiver are configured to perform the communication method according to any of the embodiments of the present application of the first aspect.

In a sixth aspect, an embodiment of the present application provides a terminal, including: a processor and a transceiver; the processor and the transceiver are configured to perform the communication method according to any of the embodiments of the present application of the second aspect.

In a seventh aspect, an embodiment of the present application provides a storage medium, including: a readable storage medium and a computer program for implementing the communication method as provided in the first aspect of the present application.

In an eighth aspect, an embodiment of the present application provides a storage medium, including: a readable storage medium and a computer program for implementing the communication method as provided in the second aspect of the present application.

In a ninth aspect, embodiments of the present application provide a program product, which includes a computer program, the computer program being stored in a readable storage medium, from which the computer program can be read by at least one processor of a communication device, and the computer program being executed by the at least one processor to enable the communication device to implement the communication method provided in the first aspect of the present application.

In a tenth aspect, embodiments of the present application provide a program product, which includes a computer program, the computer program being stored in a readable storage medium, from which the computer program can be read by at least one processor of a communication device, and the computer program being executed by the at least one processor to enable the communication device to implement the communication method provided in the second aspect of the present application.

According to the communication method and the communication device, the network device determines the MCS for communication with the terminal, determines the granularity of frequency domain resources allocated to the terminal for communication according to the determined MCS, and then sends control information to the terminal. And the terminal determines the granularity of the frequency domain resources used for communication allocated to the terminal by the network equipment according to the MCS domain of the control information, analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resources, and determines the information of the frequency domain resources used for communication by the terminal. Therefore, the network device dynamically adjusts the granularity of the frequency domain resource allocated for communication to the terminal according to the MCS communicated with the terminal, and accordingly, the terminal obtains the granularity of the dynamically changed frequency domain resource by analyzing the MCS domain, and further accurately obtains the information of the frequency domain resource used for communication. The problem that the information of the frequency domain resources in the resource allocation domain occupies more bit positions due to the fact that the granularity of the frequency domain resources cannot be dynamically adjusted in the prior art is solved, the information size of a control channel is prevented from being increased, and the reliability of the URLLC service is guaranteed.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system applied in an embodiment of the present application;

fig. 2 is a flowchart of a communication method according to an embodiment of the present application;

fig. 3 is a flowchart of a communication method according to another embodiment of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a chip of a network device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a chip of a terminal according to an embodiment of the present application.

Detailed Description

Fig. 1 is a schematic architecture diagram of a communication system applied in an embodiment of the present application. As shown in fig. 1, the communication system includes a network device, for example, a radio access network device, and at least one terminal. The terminal is connected with the wireless access network equipment in a wireless mode, and the wireless access network equipment is connected with the core network equipment in a wireless or wired mode. The core network device and the radio access network device may be separate physical devices, or the function of the core network device and the logical function of the radio access network device may be integrated on the same physical device, or a physical device may be integrated with a part of the function of the core network device and a part of the function of the radio access network device. The terminals may be fixed or mobile. Fig. 1 is a schematic diagram, and other network devices, such as a wireless relay device and a wireless backhaul device, may also be included in the communication system, which are not shown in fig. 1. The embodiments of the present application do not limit the number of core network devices, radio access network devices, and terminals included in the communication system.

The radio access network device is a network device in which the terminal is wirelessly accessed to the communication system, and may be a base station NodeB, an evolved base station eNodeB, a base station in a 5G communication system, a base station in a future communication system, or an access node in a WiFi system, and the like.

A Terminal may also be referred to as a Terminal (Terminal), User Equipment (UE), Mobile Station (MS), Mobile Terminal (MT), or the like. The terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.

The wireless access network equipment and the terminal can be deployed on land, including indoors or outdoors, and can be handheld or vehicle-mounted; can also be deployed on the water surface; it may also be deployed on airborne airplanes, balloons and satellite vehicles. The embodiment of the application does not limit the application scenarios of the wireless access network equipment and the terminal.

The embodiments of the present application may be applicable to downlink signal transmission, may also be applicable to uplink signal transmission, and may also be applicable to device-to-device (D2D) signal transmission. For downlink signal transmission, the sending device is a radio access network device, and the corresponding receiving device is a terminal. For uplink signal transmission, the transmitting device is a terminal, and the corresponding receiving device is a radio access network device. For D2D signaling, the transmitting device is a terminal and the corresponding receiving device is also a terminal. The embodiment of the present application does not limit the transmission direction of the signal.

The radio access network device and the terminal, and the terminal may communicate through a licensed spectrum (licensed spectrum), may communicate through an unlicensed spectrum (unlicensed spectrum), and may communicate through both the licensed spectrum and the unlicensed spectrum. The radio access network device and the terminal may communicate with each other through a frequency spectrum of less than 6 gigahertz (GHz), may communicate through a frequency spectrum of more than 6GHz, and may communicate using both a frequency spectrum of less than 6GHz and a frequency spectrum of more than 6 GHz. The embodiment of the present application does not limit the spectrum resources used between the radio access network device and the terminal.

Fig. 2 is a flowchart of a communication method according to an embodiment of the present application, and as shown in fig. 2, the method according to the embodiment may include:

s201, the network equipment determines the MCS communicated with the terminal.

In this embodiment, the MCS includes coding rate information and modulation scheme information, and the network device may determine the MCS for the network device to communicate with the terminal according to, for example, a CQI (e.g., a noise ratio condition, data sent by the terminal, a terminal-to-terminal reception reliability requirement, etc.) reported by the terminal. The MCS used by the network device to communicate with the terminal may be an MCS used for uplink communication, may be an MCS used for downlink communication, or may include both of them.

S202, the network equipment determines the granularity of frequency domain resources for communication allocated to the terminal according to the determined MCS.

In this embodiment, the network device determines the granularity of the frequency domain resource according to the determined MCS, where the frequency domain resource indicates the network device to allocate the frequency domain resource for communication to the terminal. For example: the MCS may correspond to different granularities of frequency domain resources, or different groups of MCSs may correspond to different granularities of frequency domain resources, where each group of MCSs includes at least one MCS, and this embodiment does not limit this. Wherein the granularity of the frequency domain resource indicates a size of a unit frequency domain resource allocated to the terminal for communication.

The granularity of the frequency domain resources may be a Resource Block Group (RBG), that is, the network device allocates frequency domain resources for communication for a terminal by using the Resource block group as a unit, where each RBG is composed of P RBs, and P is an integer greater than or equal to 1. Alternatively, the first and second electrodes may be,

the granularity of the frequency domain resource may be

To a

The description of the related art can be referred to, and is not repeated herein.

S203, the network equipment sends control information to the terminal. And the terminal receives the control information sent by the network equipment.

In this embodiment, the network device determines the frequency domain resource allocated to the terminal according to the determined granularity of the frequency domain resource, and the granularity of the frequency domain resource allocated to the terminal is the granularity determined in S202. Then, the network device needs to inform the terminal of the frequency domain resources allocated to the terminal, that is, which frequency domain resources corresponding to the granularity are allocated to the terminal. Therefore, the network device of this embodiment sends Control Information to the terminal, where the Control Information is, for example, Downlink Control Information (DCI), the Control Information includes a resource allocation field, and the resource allocation field carries Information of frequency domain resources allocated to the terminal, and the Information is, for example, location Information of the frequency domain resources.

Accordingly, the terminal receives the control information transmitted by the network device.

S204, the terminal determines the granularity of the frequency domain resource which is allocated to the terminal by the network equipment and is used for communication according to the MCS domain of the control information.

In this embodiment, the control information sent by the network device includes an MCS field, the terminal obtains an MCS by parsing the MCS field of the control information, and since the granularity of the frequency domain resource allocated for communication by the network device to the terminal is determined by the network device according to the MCS, the terminal may determine the granularity of the frequency domain resource allocated for communication by the network device to the terminal based on the MCS indicated by the MCS field.

S205, the terminal analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resource, and determines the information of the frequency domain resource used by the terminal for communication.

In this embodiment, the terminal analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resource determined in S204, so as to obtain the information of the frequency domain resource used by the terminal for communication, which is carried in the resource allocation domain. For example: the larger the granularity of the frequency domain resources is, the fewer bit positions in the resource allocation domain of the control information need to be analyzed to obtain the information of the frequency domain resources. Taking the granularity of the frequency domain resource as RBG as an example, the system bandwidth includes 100 RBs, if RBG (that is, the granularity of the frequency domain resource) is 10 RBs, the system bandwidth is divided into 10 RBGs, and accordingly information of 10 bit positions in the resource allocation domain is required to indicate information of the frequency domain resource used by the terminal for communication, for example, if the information of 1 st bit position is 1, it indicates that the 1 st RBG is the frequency domain resource used by the terminal for communication, and if the information of 1 st bit position is 0, it indicates that the 1 st RBG is not the frequency domain resource used by the terminal for communication. If the RBG (i.e., granularity of frequency domain resources) is 20 RBs, the system bandwidth is divided into 5 RBGs, and accordingly information of 5 bit positions in the resource allocation domain is required to indicate information of frequency domain resources used by the terminal for communication. Therefore, according to the granularity of the frequency domain resources, the information of analyzing several bit positions in the de-resource allocation domain can be determined, and the information of the frequency domain resources used by the terminal for communication can be obtained.

In this embodiment, a network device determines an MCS for communication with a terminal, determines a granularity of frequency domain resources allocated to the terminal for communication according to the determined MCS, and then sends control information to the terminal. And the terminal determines the granularity of the frequency domain resources used for communication allocated to the terminal by the network equipment according to the MCS domain of the control information, analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resources, and determines the information of the frequency domain resources used for communication by the terminal. Therefore, the network device dynamically adjusts the granularity of the frequency domain resource allocated for communication to the terminal according to the MCS adopted by the network device for communicating with the terminal, and accordingly, the terminal obtains the granularity of the dynamically changed frequency domain resource by analyzing the MCS domain, and further accurately obtains the information of the frequency domain resource for communication. The problem that the information of the frequency domain resources in the resource allocation domain occupies more bit positions due to the fact that the granularity of the frequency domain resources cannot be dynamically adjusted in the prior art is solved, the information size of a control channel is prevented from being increased, and the reliability of the URLLC service is guaranteed.

Fig. 3 is a flowchart of a communication method according to another embodiment of the present application, and as shown in fig. 3, the method according to this embodiment may include:

s301, the network equipment determines the MCS of communication with the terminal.

In this embodiment, the specific implementation process of S301 may refer to the related description in the embodiment shown in fig. 2, and is not described herein again.

S302, when the determined MCS belongs to a first MCS set, the network equipment determines that the granularity of frequency domain resources which are allocated to the terminal for communication is a first granularity; when the determined MCS belongs to a second MCS set, the network device determines the granularity at which the frequency domain resources for communication are allocated to the terminal to be a second granularity.

In this embodiment, there exists a first MCS set and a second MCS set, and the first MCS set includes at least one MCS, the second MCS set also includes at least one MCS, and an intersection of the first MCS set and the second MCS set is an empty set. In an embodiment, a code rate corresponding to any one MCS in the first MCS set is smaller than a code rate corresponding to any one MCS in the second MCS set. Generally, for the same modulation scheme, the smaller the coding rate, the smaller the index of the MCS indicating the coding rate. After the network device determines the MCS, determining whether the MCS belongs to a first MCS set or a second MCS set, when the determined MCS belongs to the first MCS set, the coding rate corresponding to the MCS may also be considered to be smaller than a preset first coding rate, and the network device determines that the granularity of frequency domain resources allocated to the terminal for communication is a first granularity; when the determined MCS belongs to the second MCS set, the coding rate corresponding to the MCS may also be considered to be greater than or equal to a preset first coding rate, and the network device determines the granularity of the frequency domain resource allocated to the terminal for communication to be the second granularity.

For the same transmission block, under the same modulation mode, the smaller the coding rate, the more the required air interface resources are represented, and correspondingly, the more the required frequency domain resources are, if the smaller granularity is adopted when the frequency domain resources are allocated, the more bit position information is needed for indicating the position of the frequency domain resources allocated to the terminal, but if the larger granularity is adopted when the frequency domain resources are allocated, the less bit position is needed for indicating the position of the frequency domain resources allocated to the terminal; thus, with a higher granularity of frequency domain resources for allocation, the location of the frequency domain resources allocated to the terminal can be indicated without increasing the bit position. Therefore, the first granularity is larger than the second granularity in the present embodiment.

In some embodiments, the network device further determines that the first granularity includes N RBs when the determined MCS belongs to a first set of MCSs; the network device also determines that a second granularity includes M RBs when the determined MCS belongs to a second set of MCSs. Also, N is greater than M. Wherein the information of the frequency domain resources with the second granularity occupies all bit positions in the resource allocation domain, and the information of the frequency domain resources with the first granularity occupies part of the bit positions in the resource allocation domain.

S303, the network equipment sends control information to the terminal. And the terminal receives the control information sent by the network equipment.

In this embodiment, a specific implementation process of S303 may refer to related descriptions in the embodiment shown in fig. 2, and details are not described here.

In some embodiments, the network device sends the terminal an index of the determined MCS. The index of the MCS may be sent to the terminal through the control information, where the index of the MCS is carried in the control information may include the following manner.

In some embodiments, the information of the frequency domain resources with the second granularity occupies all bit positions in the resource allocation domain, and the information of the frequency domain resources with the first granularity occupies a part of the bit positions, such as Q bit positions, in the resource allocation domain. The network device further determines whether the determined MCS belongs to a third MCS set, where the third MCS set is a subset of the first MCS set, for example: the third MCS set is the first MCS set, or the third MCS set is a proper subset of the first MCS set.

When the determined MCS belongs to the third MCS set, the determined MCS indicates that the coding rate corresponding to the MCS is equal to or less than the lowest coding rate corresponding to the MCS indicated by the MCS field, it indicates that the bit position in the MCS field is not enough for indicating the index of the MCS, and also indicates that the granularity of the frequency domain resource allocated to the terminal for communication is the first granularity, under the first granularity, the bit position in the resource allocation field is enough for indicating the position of the frequency domain resource allocated to the terminal, and it indicates that the information of the frequency domain resource allocated to the terminal occupies a part of the bit positions, for example, Q bit positions, of the resource allocation field, and the resource allocation field may have redundant bit positions in addition to the bit position for indicating the position of the frequency domain resource. Therefore, the network device sends the index of the MCS to the terminal to occupy K bit positions preset in the resource allocation domain, wherein K is an integer greater than or equal to 1. In some embodiments, bit positions other than the K bit positions in the resource allocation domain are used for indicating information of frequency domain resources, i.e. Q + K bit positions are included in the resource allocation domain, where K bit positions are used for indicating an index of the MCS, and another Q bit positions are used for indicating information of frequency domain resources. Therefore, the embodiment uses the redundant bit positions in the resource allocation domain for indicating the index of the MCS, so that the bit positions in the resource allocation domain are effectively utilized, and the MCS domain does not need to increase the bit positions any more, thereby avoiding increasing the size of the control information.

When the determined MCS does not belong to the third MCS set, the coding rate indicated by the MCS is greater than or equal to the lowest coding rate corresponding to the MCS indicated by the MCS field, which indicates that the bit position in the MCS field is sufficient for indicating the index of the MCS, and also indicates that the index of the MCS does not occupy the bit position in the resource allocation field. The index of the MCS sent by the network device to the terminal occupies the MCS field in the control information.

In some embodiments, when the MCS determined by the network device belongs to the third MCS set, the index of the MCS occupies K bit positions of the resource allocation field, and a bit position in the MCS field no longer indicates the index of the MCS, so that the network device fills a preset index in the MCS field of the control information, where the preset index is used to indicate that the index of the determined MCS needs to be parsed from the resource allocation field. For example: the preset index is index number 0 or reserved MCS index number.

S304, when the index indicated by the MCS domain belongs to a first MCS index set, the terminal determines that the granularity of frequency domain resources allocated to the terminal for communication by the network equipment is a first granularity; when the index indicated by the MCS domain belongs to a second MCS index set, the terminal determines the granularity of the frequency domain resource allocated to the terminal for communication by the network equipment to be a second granularity.

In this embodiment, the terminal may obtain the index indicated by the MCS field according to the MCS field in the parsing control information. Then determining whether the index indicated by the obtained MCS domain belongs to a first MCS index set or a second MCS index set, wherein when the index indicated by the MCS domain belongs to the first MCS index set, the terminal determines that the granularity of frequency domain resources allocated to the terminal by the network equipment for communication is a first granularity; when the index indicated by the MCS domain belongs to a second MCS index set, the terminal determines the granularity of the frequency domain resource allocated to the terminal for communication by the network equipment to be a second granularity.

In some embodiments, any one of the MCS indices in the first MCS index set is smaller than any one of the MCS indices in the second MCS index set, the first granularity is larger than the second granularity.

When the index indicated by the MCS field belongs to the first MCS index set, it indicates that the index indicated by the MCS field is smaller than (or equal to or less than) a preset first MCS index, and also indicates that the coding rate is smaller than (or equal to or less than) a first preset coding rate, and the terminal determines that the granularity at which the network device allocates the frequency domain resource for communication to the terminal is coarse granularity, that is, the first granularity. When the index indicated by the MCS field belongs to the second MCS index set, it indicates that the index indicated by the MCS field is greater than or equal to (or greater than) the preset first MCS index, and also indicates that the coding rate is greater than or equal to (or greater than) the first preset coding rate, and the terminal determines that the granularity of the frequency domain resource allocated by the network device to the terminal for communication is fine granularity, that is, the second granularity.

S305, the terminal analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resource, and determines the information of the frequency domain resource used by the terminal for communication.

In this embodiment, the specific implementation process of S305 may refer to the related description of the embodiment shown in fig. 2, and is not described herein again.

In some embodiments, the terminal also determines an index of the MCS with which the network device communicates based on the MCS field. In addition, the terminal of this embodiment may also determine the size of the TBS according to the index of the obtained MCS, and may also determine the coding rate, and the specific implementation process is similar to that in the prior art, and is not described here again.

There are the following ways how the terminal determines the index of the MCS.

In some embodiments, the terminal parses the MCS field in the control information, may obtain an index indicated by the MCS field, and then determines whether the index indicated by the MCS field belongs to a third MCS index set, where the third MCS index set is a subset of the first MCS index set, for example: the third MCS index set is a proper subset of the first MCS index set, or the third MCS index set is the first MCS index set itself. In some embodiments, the index of the MCS in the third MCS index set is smaller than (or equal to or less than) the preset second MCS index, and further indicates that the coding rate is smaller than (or equal to or less than) the preset second coding rate, and the preset second coding rate is smaller than or equal to the preset first coding rate. The preset second MCS index is smaller than or equal to the preset first MCS index, if the preset second MCS index is smaller than the preset first MCS index, the third MCS index set is a proper subset of the first MCS index set, and if the preset second MCS index is equal to the preset first MCS index, the third MCS index set is the first MCS index set. In an embodiment, under the same modulation mode, a coding rate corresponding to a smaller MCS index is smaller, and a coding rate corresponding to a larger MCS index is larger.

In this embodiment, it may be predefined that, when the index indicated by the MCS field belongs to the third MCS index set, the index of the MCS occupies K bit positions preset in the resource allocation field; and/or when the index indicated by the MCS domain does not belong to the third MCS index set, the index of the MCS occupies the MCS domain.

The index of the MCS which is greater than or equal to the preset second MCS index occupies the bit position of the MCS domain, so that the terminal can obtain the index of the MCS by decoding the MCS domain, and the index of the MCS is greater than or equal to the preset second MCS index. Since the index of the MCS smaller than the preset second MCS index occupies the bit position of the resource allocation domain, the terminal reads the MCS domain first and then reads the resource allocation domain, specifically, reads K bit positions in the resource allocation domain, and can obtain the index of the MCS, which is smaller than the preset second MCS index.

When the terminal determines that the index indicated by the MCS domain belongs to the third MCS index set, the information indicating that part of bit positions in the resource allocation domain are used for indicating the index of the MCS, and the terminal determines the index of the MCS communicated with the network equipment according to the information on the K preset bit positions in the resource allocation domain. In some embodiments, bit positions other than the K bit positions in the resource allocation domain are used for indicating information of frequency domain resources, for example, the resource allocation domain comprises T bit positions in total, where the preset K bit positions are used for indicating an index of MCS, and accordingly, Q bit positions are used for indicating information of frequency domain resources allocated for the terminal, where Q is T-K. Therefore, in the present embodiment, the idle bit positions in the resource allocation field are used for indicating the index of the MCS, and there is no need to increase the bit positions in the MCS field, thereby avoiding increasing the size of the control information.

When the index indicated by the MCS domain does not belong to the third MCS index set, the index indicating the MCS occupies the MCS domain, no bit position in the resource allocation domain is used for indicating the index of the MCS, and the terminal determines that the index indicated by the MCS domain is the index of the MCS used for the terminal to communicate with the network device.

In some embodiments, the index of the MCS in the third MCS index set is used to indicate that the index of the true MCS (i.e. the index of the MCS used by the terminal to communicate with the network device) occupies a bit position in a resource allocation domain from which the index of the MCS to communicate with the network device needs to be parsed. Therefore, when the terminal determines that the index indicated by the MCS field belongs to the third MCS index set, the terminal determines that the index of the MCS for communicating with the network device needs to be parsed from the resource allocation field according to the index indicated by the MCS field. Optionally, the third MCS index set includes an index 0.

In some embodiments, when the terminal determines that the index indicated by the MCS domain belongs to the first MCS index set, the terminal further determines that the first granularity comprises N RBs, and the terminal parses information of Q bit positions of a resource allocation domain in control information according to the first granularity, and determines information of frequency domain resources used by the terminal for communication; when the index indicated by the MCS domain determined by the terminal belongs to a second MCS index set, the terminal also determines that the second granularity comprises M RBs, and the terminal analyzes all bit positions of the resource allocation domain according to the second granularity and determines the information of the frequency domain resource used by the terminal for communication. Wherein N is greater than M.

On the basis of the foregoing embodiments, in some embodiments, the index of the MCS in the fourth MCS index set is used to indicate that the granularity at which the network device allocates the frequency domain resource for communication to the terminal is the first granularity. After determining the index indicated by the MCS domain, the terminal further determines whether the index indicated by the MCS domain belongs to a fourth MCS index set, and when the index indicated by the MCS domain belongs to the fourth MCS index set, the terminal determines that the granularity at which the network device allocates frequency domain resources for communication to the terminal is a first granularity, wherein an intersection of the fourth MCS index set and the first MCS index set is an empty set, and an intersection of the fourth MCS index set and the second MCS index set is also an empty set. Optionally, when the index indicated by the MCS field does not belong to the fourth MCS index set, the terminal may compare the index indicated by the MCS field with the first MCS index set and the second MCS index set to determine the granularity at which the network device allocates the frequency domain resource for communication to the terminal.

In some embodiments, the index of the MCS in the fourth MCS index set is used to indicate that the index of the true MCS occupies bit positions in the resource allocation domain, and the index of the MCS communicated with the network device needs to be parsed from information on K preset bit positions in the resource allocation domain. Therefore, when the terminal determines that the index indicated by the MCS domain belongs to the fourth MCS index set, the terminal determines the index of the MCS communicated with the network equipment according to the information on the K preset bit positions in the resource allocation domain. Optionally, the fourth MCS index set includes reserved MCS index numbers, such as index numbers 29 or 30 or 31, which is not limited in this embodiment.

The third MCS index set includes index number 0, and the fourth MCS index set includes reserved MCS index number. That is, when the index indicated by the MCS field obtained by the terminal is index 0, the index 0 does not indicate an MCS, but indicates an index of the MCS to be parsed from the resource allocation field, and therefore, the terminal parses information of K bit positions preset in the resource allocation field, and takes the parsed information as the index of the MCS. When the index indicated by the MCS field acquired by the terminal is the reserved MCS index number, the terminal may determine that the reserved MCS index number is not the index of the true MCS, then parse the information of the K bit positions preset in the resource allocation field, and use the parsed information as the index of the MCS. When the index indicated by the MCS field obtained by the terminal is neither index number 0 nor reserved MCS index number, it indicates that the index indicated by the MCS field is the index of the true MCS, and then the terminal takes the index indicated by the MCS field as the index of the MCS.

In the above embodiment, the smaller the MCS index is in the same modulation scheme, the smaller the coding rate is, but the larger the MCS index is in the same modulation scheme, the smaller the coding rate may be. In other embodiments, any one of the MCS indices in the first MCS index set is greater than any one of the MCS indices in the second MCS index set, and the first granularity is greater than the second granularity.

In some embodiments, when the index indicated by the MCS field belongs to the first MCS index set, indicating that the index indicated by the MCS field is greater than (or equal to or greater than) a preset third MCS index and further indicating that the coding rate is less than (or equal to or less than) a first preset coding rate, the terminal determines that the granularity at which the network device allocates the frequency domain resource for communication to the terminal is coarse granularity, that is, the first granularity. When the index indicated by the MCS field belongs to the second MCS index set, it indicates that the index indicated by the MCS field is less than or equal to (or less than) a preset third MCS index, and also indicates that the coding rate is greater than or equal to (or greater than) a first preset coding rate, and the terminal determines that the granularity of the frequency domain resource allocated by the network device to the terminal for communication is fine granularity, that is, the second granularity. In the case of determining the granularity, other further schemes are similar to the above-described schemes, and reference may be made to the descriptions in the above embodiments, which are not described herein again.

The following is an example showing the MCS index in the form of a table, and the embodiment is described in conjunction with the table as shown in table one. In the application, the MCS table shown in table one may be referred to as a first MCS table.

Watch 1

In some embodiments, index numbers 0-28 may be divided into a first MCS index set and a second MCS index set based on the index list of MCSs shown in table one. Wherein, the index number 0 in the table one is divided into a third MCS index set, and the reserved MCS index numbers, that is, the index numbers 29, 30 and 31 are divided into a fourth MCS index set. In this embodiment, the index number 0 and at least one index number after the index number 0 may be divided into a first MCS index set, for example; the index numbers 0 and 1 are divided into the first MCS index set, or the index numbers 0-2 are divided into the first MCS index set, which is not limited in this embodiment. For convenience of description, in this embodiment, the index number 0 is divided into a first MCS index set, that is, the third MCS index set is the first MCS index set itself, and at this time, it may be considered that the table one is divided into three index sets, the index number 0 is the first MCS index set (that is, the third MCS index set), the index numbers 1 to 28 are the second MCS index sets, and the reserved MCS index numbers (that is, the index numbers 29 to 30) are the fourth MCS index sets.

When the terminal determines that the index indicated by the MCS domain is index number 0, the terminal determines that the granularity of the frequency domain resource allocated to the terminal by the network device for communication is the first granularity, and determines that the index number 0 is not the index of the MCS used for the terminal and the network device for communication, and then the terminal analyzes the information of the preset K bit positions in the resource allocation domain to obtain the index of the MCS used for the terminal and the network device for communication. When the index number indicated by the MCS field determined by the terminal is any one of the index numbers 1 to 28, the terminal determines that the index number indicated by the MCS field is the index of the MCS used for the terminal to communicate with the network device. When the index number shown in the MCS domain determined by the terminal is any one of the index numbers 29 to 31, the terminal determines that the granularity of the frequency domain resource allocated to the terminal by the network device for communication is the first granularity, determines that the index number 0 is not the index of the MCS used for the terminal and the network device for communication, and then the terminal analyzes the information of the K preset bit positions in the resource allocation domain to obtain the index of the MCS used for the terminal and the network device for communication.

In some embodiments, index numbers 0-31 may be divided into a first MCS index set and a second MCS index set based on the index list of MCSs shown in table one. The reserved MCS index numbers, that is, the index numbers 29, 30, and 31, are divided into a first MCS index set, and the index numbers 0 to 28 in the first table are divided into a second MCS index set.

When the terminal determines that the index indicated by the MCS domain is any one of the index numbers 29 to 31, the terminal determines that the granularity of the frequency domain resource allocated to the terminal by the network device for communication is the first granularity, determines that the index indicated by the MCS domain is not the index of the MCS for communication between the terminal and the network device, and then the terminal analyzes the information of the preset K bit positions in the resource allocation domain to obtain the index of the MCS for communication between the terminal and the network device. When the index number indicated by the MCS field determined by the terminal is any one of the index numbers 0 to 28, the terminal determines that the index number indicated by the MCS field is the index of the MCS used for the terminal to communicate with the network device.

When the index of the MCS used for the terminal and the network device in the same row is obtained by parsing from the resource allocation domain, the terminal may search the second MCS table saved in advance according to the index to obtain the MCS of the terminal communicating with the network device. Wherein the MCS indicated by each index in the second MCS table is different from the MCS indicated by each index in the first MCS table, or at most only one of the MCS tables is the same. In the present application, the first MCS table and the second MCS table may be specified by a standard, or determined by mutual negotiation between the network device and the terminal, or determined in other manners. How to determine the first MCS table and the second MCS table and the values of the parameters in the tables under different indexes are not limited in the present application.

When the index of the MCS used for the terminal to communicate with the network equipment is obtained by parsing from the MCS domain, the terminal equipment searches a first MCS table saved in advance to obtain the MCS of the terminal to communicate with the network equipment.

It is understood that, in the above embodiments, the method or the steps implemented by the terminal may also be implemented by a chip inside the terminal. The method or steps implemented by the network device may also be implemented by a chip inside the network device.

Fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application, and as shown in fig. 4, the communication device according to this embodiment may be a network device, and may also be a chip inside the network device, including: a processing module 11 and a sending module 12.

A processing module 11, configured to determine an MCS for communicating with a terminal; and determining granularity of frequency domain resources allocated to the terminal for communication according to the determined MCS.

A sending module 12, configured to send control information to the terminal, where a resource allocation domain of the control information carries information of frequency domain resources allocated to the terminal, and a granularity of the allocated frequency resources is the determined granularity.

Optionally, the processing module 11 is specifically configured to: when the determined MCS belongs to a first MCS set, determining the granularity of frequency domain resources allocated to the terminal for communication as a first granularity; when the determined MCS belongs to a second MCS set, determining the granularity of frequency domain resources allocated to the terminal for communication as a second granularity;

wherein the first granularity is larger than the second granularity, and any MCS in the first MCS set is different from any MCS in the second MCS set.

Optionally, the sending module 12 is further configured to send the index of the determined MCS to the terminal.

Optionally, when the determined MCS belongs to a third MCS set, an index of the determined MCS occupies K bit positions preset in the resource allocation domain, where K is an integer greater than or equal to 1, and the third MCS set is a subset of the first MCS set.

Optionally, bit positions other than the K bit positions in the resource allocation domain are used to indicate information of frequency domain resources.

Optionally, the processing module 11 is further configured to determine that the first granularity includes N RBs when the determined MCS belongs to the first MCS set; wherein N is greater than M, which is the number of RBs in the second granularity;

Optionally, the processing module 11 is further configured to, when the determined MCS belongs to the third MCS set, fill a preset index in the MCS field of the control information, where the preset index is used to indicate that the index of the determined MCS needs to be parsed from the resource allocation field.

Optionally, the preset index is specifically an index number 0 or a reserved MCS index number.

Optionally, when the determined MCS does not belong to the third MCS set, the index of the determined MCS occupies an MCS field in the control information.

The network device described above in this embodiment may be configured to execute the technical solutions executed by the network device/network device chip in the above method embodiments, and the implementation principles and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiments, and are not described herein again.

Fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present application, and as shown in fig. 5, the network device according to the embodiment may include: a processor 21 and a transceiver 22. The processor 21 is communicatively coupled to a transceiver 22.

In hardware implementation, the above transmitting module 12 may be the transceiver 22 in the present embodiment. Alternatively, the transceiver 22 includes a transmitter and a receiver, and the above transmitting module 12 may be a transmitter in the transceiver 22. The above processing module 11 may be embedded in hardware or may be independent of the processor 21 of the terminal.

The transceiver 22 may include necessary radio frequency communication devices such as mixers. The processor 21 may include at least one of a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Microcontroller (MCU), an Application Specific Integrated Circuit (ASIC), or a Field Programmable Gate Array (FPGA).

Optionally, the network device of this embodiment may further include a memory 23, where the memory 23 is configured to store program instructions, and the processor 21 is configured to call the program instructions in the memory 23 to execute the above-mentioned scheme.

The program instructions may be implemented in the form of software functional units and may be sold or used as a stand-alone product, and the memory 23 may be any form of computer readable storage medium. Based on such understanding, all or part of the technical solutions of the present application may be embodied in the form of a software product, which includes several instructions to enable a computer device, specifically, the processor 21, to execute all or part of the steps of the terminal in the embodiments of the present application. And the aforementioned computer-readable storage media comprise: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The network device described above in this embodiment may be configured to execute the technical solutions of the network device or its internal chip in the above method embodiments of the present application, and the implementation principles and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiments, and are not described herein again.

Fig. 6 is a schematic structural diagram of a chip of a network device according to an embodiment of the present application, and as shown in fig. 6, the chip of the network device according to the embodiment may include: a processor 31 and an input-output port 32. The processor 31 is communicatively coupled to the input/output port 32.

In hardware implementation, the above sending module 12 may be the input/output port 32 in the present embodiment. Alternatively, the input/output port 32 includes an input port and an output port, and the above transmission module 12 may be an output port of the input/output port 32. The above processing module 11 may be embedded in the processor 31 in a hardware form or may be independent of a chip.

Optionally, the network device of this embodiment may further include a memory 33, where the memory 33 is configured to store program instructions, and the processor 31 is configured to call the program instructions in the memory 33 to execute the above-mentioned scheme.

The chip of the network device described above in this embodiment may be configured to execute the technical solution of the network device or its internal chip in the foregoing method embodiments of the present application, and the implementation principle and the technical effect are similar, where the function of each module may refer to the corresponding description in the method embodiments, and is not described here again.

Fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application, and as shown in fig. 7, the communication device according to this embodiment may be a terminal, and may also be a chip inside the terminal, including: a receiving module 41 and a processing module 42.

A receiving module 41, configured to receive control information sent by a network device; and the resource allocation domain of the control information carries the information of the frequency domain resources allocated to the terminal.

A processing module 42, configured to determine, according to the MCS field of the control information, a granularity of frequency domain resources allocated by the network device to the terminal for communication; and the terminal analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resource and determines the information of the frequency domain resource used by the terminal for communication.

Optionally, the processing module 42 is specifically configured to: when the index indicated by the MCS domain belongs to a first MCS index set, determining the granularity of frequency domain resources allocated to the terminal by the network equipment for communication to be a first granularity; and when the index indicated by the MCS domain belongs to a second MCS index set, determining the granularity of the frequency domain resource allocated to the terminal for communication by the network equipment to be a second granularity.

Optionally, any MCS index in the first MCS index set is smaller than any MCS index in the second MCS index set, and the first granularity is larger than the second granularity.

Optionally, the processing module 42 is further configured to determine, according to the MCS field, an index of an MCS used for the communication device to communicate with the network device.

Optionally, the processing module 42 is specifically configured to:

Optionally, the processing module 42 is further configured to determine that the first granularity includes N RBs when the index indicated by the MCS field belongs to a first MCS index set; wherein N is greater than M, and M is the number of RBs in the second granularity.

Optionally, when the index indicated by the MCS field belongs to the third MCS index set, the index indicated by the MCS field is specifically used to indicate that the index of the MCS used for the communication between the communication device and the network device is parsed from the resource allocation field.

Optionally, the third MCS index set includes an index 0.

Optionally, the processing module 42 is specifically configured to:

Optionally, the processing module 42 is further configured to: when the index indicated by the MCS belongs to the fourth MCS index set, determining the index of the MCS used for the communication between the communication device and the network device according to the information on the preset K bit positions in the resource allocation domain.

Optionally, any MCS index in the first MCS index set is greater than any MCS index in the second MCS index set, and the first granularity is greater than the second granularity.

Optionally, the processing module 42 is further configured to: when the index indicated by the MCS belongs to the second MCS index set, the index of the MCS used for the communication between the communication equipment and the network equipment is determined according to the information on the preset K bit positions in the resource allocation domain.

The terminal described above in this embodiment may be configured to execute the technical solutions executed by the terminal/terminal chip in the above method embodiments, and the implementation principles and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiments, and are not described herein again.

Fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application, and as shown in fig. 8, the terminal according to the embodiment may include: a processor 51 and a transceiver 52. The processor 51 is communicatively coupled to a transceiver 52.

In hardware implementation, the above receiving module 41 may be the transceiver 52 in the present embodiment. Alternatively, the transceiver 52 includes a transmitter and a receiver, and the above receiving module 41 may be a transmitter in the transceiver 52. The above processing module 42 may be embedded in hardware or may be independent of the processor 51 of the terminal.

The transceiver 52 may include necessary radio frequency communication devices such as mixers. The processor 51 may comprise at least one of a CPU, DSP, MCU, ASIC or FPGA.

Optionally, the network device of this embodiment may further include a memory 53, where the memory 53 is configured to store program instructions, and the processor 51 is configured to call the program instructions in the memory 53 to execute the above-described scheme.

The program instructions may be implemented in the form of software functional units and may be sold or used as a stand-alone product, and the memory 53 may be any form of computer-readable storage medium. Based on such understanding, all or part of the technical solutions of the present application may be embodied in the form of a software product, which includes several instructions to enable a computer device, specifically, the processor 51, to execute all or part of the steps of the terminal in the embodiments of the present application. And the aforementioned computer-readable storage media comprise: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The terminal described above in this embodiment may be configured to execute the technical solutions of the terminal or its internal chip in the foregoing method embodiments of the present application, and the implementation principles and technical effects are similar, where the functions of each module may refer to corresponding descriptions in the method embodiments, and are not described herein again.

Fig. 9 is a schematic structural diagram of a chip of a terminal according to an embodiment of the present application, and as shown in fig. 9, the chip of the terminal according to the embodiment may include: a processor 61 and an input-output port 62. The processor 61 is communicatively coupled to the input/output port 62.

In terms of hardware implementation, the above receiving module 41 may be the input/output port 62 in the present embodiment. Alternatively, the input/output ports 62 include an input port and an output port, and the above receiving module 41 may be an input port of the input/output ports 62. The above processing module 42 may be embedded in the processor 61 in a hardware form or may be independent of a chip.

Optionally, the network device of this embodiment may further include a memory 63, where the memory 63 is configured to store program instructions, and the processor 61 is configured to call the program instructions in the memory 63 to execute the above-mentioned scheme.

The chip of the terminal described above in this embodiment may be used to implement the technical solutions of the terminal or its internal chip in the foregoing method embodiments of the present application, and the implementation principles and technical effects are similar, where the functions of each module may refer to the corresponding descriptions in the method embodiments, and are not described here again.

It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation. Each functional module in the embodiments of the present application may be integrated into one processing module, or each module 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.

The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

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

Claims

1. A communication method, applied to a network device, includes:

determining a Modulation and Coding Scheme (MCS) communicated with a terminal;

2. The method of claim 1, wherein the determining the granularity at which frequency domain resources for communication are allocated to the terminal according to the determined MCS comprises:

3. The method of claim 2, further comprising:

and transmitting the index of the determined MCS to a terminal.

4. The method of claim 3, wherein an index of the determined MCS occupies K bit positions preset in the resource allocation domain when the determined MCS belongs to a third MCS set, wherein K is an integer greater than or equal to 1, and wherein the third MCS set is a subset of the first MCS set.

5. The method of claim 4, wherein bit positions other than the K bit positions in the resource allocation domain are used for indicating information of frequency domain resources.

6. The method of claim 4, further comprising:

7. Method according to claim 6, wherein the preset index is specifically index number 0 or reserved MCS index number.

8. The method of any of claims 4 to 7, wherein the index of the determined MCS occupies a MCS domain in the control information when the determined MCS does not belong to a third MCS set.

9. A communication method, applied to a terminal, includes:

determining the granularity of frequency domain resources for communication allocated to the terminal by the network equipment according to the Modulation Coding Strategy (MCS) domain of the control information;

10. The method of claim 9, wherein the determining the granularity of the frequency domain resources allocated by the network device to the terminal for communication according to the Modulation and Coding Scheme (MCS) field of the control information comprises:

11. The method of claim 10, wherein any one of the first set of MCS indices is smaller than any one of the second set of MCS indices, and wherein the first granularity is larger than the second granularity.

12. The method of claim 11, further comprising: and determining the index of the MCS used for the terminal to communicate with the network equipment according to the MCS domain.

13. The method of claim 12, wherein determining an index of an MCS for communicating with the network device according to the MCS field comprises:

when the index indicated by the MCS domain belongs to a third MCS index set, determining the index of the MCS used for the terminal to communicate with the network equipment according to information on K bit positions preset in the resource allocation domain, wherein K is an integer greater than or equal to 1, and the third MCS index set is a subset of the first MCS index set;

when the index indicated by the MCS domain does not belong to the third MCS index set, the index indicated by the MCS domain is the index of the MCS used for the terminal to communicate with the network device.

14. The method of claim 13, wherein bit positions other than the K bit positions in the resource allocation domain are used for indicating information of frequency domain resources.

15. The method of claim 13, wherein the index indicated by the MCS domain is specifically used to indicate that the index of the MCS used for the terminal to communicate with the network device is resolved from the resource allocation domain when the index indicated by the MCS domain belongs to the third MCS index set.

16. The method of any of claims 13 to 15, wherein the third MCS index set comprises an index of 0.

17. A communication device, comprising:

the processing module is used for determining a Modulation and Coding Strategy (MCS) communicated with the terminal; determining the granularity of frequency domain resources allocated to the terminal for communication according to the determined MCS;

18. The communication device according to claim 17, wherein the processing module is specifically configured to: when the determined MCS belongs to a first MCS set, determining the granularity of frequency domain resources allocated to the terminal for communication as a first granularity; when the determined MCS belongs to a second MCS set, determining the granularity of frequency domain resources allocated to the terminal for communication as a second granularity;

19. The communications device of claim 18, wherein the sending module is further configured to send an index of the determined MCS to a terminal.

20. The communications device of claim 19, wherein an index of the determined MCS occupies K bit positions preset in the resource allocation domain when the determined MCS belongs to a third MCS set, the K being an integer greater than or equal to 1, wherein the third MCS set is a subset of the first MCS set.

21. The communications device of claim 20, wherein bit positions other than the K bit positions in the resource allocation domain are used to indicate information of frequency domain resources.

22. The communications device of claim 20, wherein the processing module is further configured to fill a preset index in the MCS field of the control information when the determined MCS belongs to the third MCS set, and the preset index is used to indicate an index of the determined MCS to be parsed from the resource allocation field.

23. The communication device according to claim 22, wherein the preset index is specifically an index number 0 or a reserved MCS index number.

24. The communications device of any one of claims 20 to 23, wherein when the determined MCS does not belong to a third MCS set, an index of the determined MCS occupies an MCS field in the control information.

25. A communication device, comprising:

a processing module, configured to determine, according to a modulation and coding strategy MCS field of the control information, a granularity of a frequency domain resource that is allocated to the terminal by the network device for communication; and the terminal analyzes the resource allocation domain of the control information according to the granularity of the frequency domain resource and determines the information of the frequency domain resource used by the terminal for communication.

26. The communications device of claim 25, wherein the processing module is specifically configured to: when the index indicated by the MCS domain belongs to a first MCS index set, determining the granularity of frequency domain resources allocated to the terminal by the network equipment for communication to be a first granularity; when the index indicated by the MCS domain belongs to a second MCS index set, determining the granularity of the frequency domain resource allocated to the terminal by the network equipment for communication to be a second granularity;

27. The communications device of claim 26, wherein any MCS index in the first set of MCS indices is smaller than any MCS index in the second set of MCS indices, and wherein the first granularity is larger than the second granularity.

28. The communications device of claim 27, wherein the processing module is further configured to determine an index of an MCS used for the communications device to communicate with the network device based on the MCS field.

29. The communications device of claim 28, wherein the processing module is specifically configured to:

when the index indicated by the MCS domain belongs to a third MCS index set, determining the index of the MCS used for the communication between the communication device and the network device according to information on K preset bit positions in the resource allocation domain, wherein K is an integer greater than or equal to 1, and the third MCS index set is a subset of the first MCS index set;

30. The communications device of claim 29, wherein bit positions other than the K bit positions in the resource allocation domain are used to indicate information of frequency domain resources.

31. The communications device of claim 29, wherein the index indicated by the MCS field is specifically configured to indicate an index for resolving the MCS for the communications device to communicate with a network device from the resource allocation field when the index indicated by the MCS field belongs to the third MCS index set.

32. The communications device of any one of claims 29 to 31, wherein said third MCS index set comprises an index of 0.

33. A storage medium, comprising: readable storage medium and computer program for implementing a communication method according to any one of claims 1 to 16.

34. A program product, characterized in that the program product comprises a computer program stored in a readable storage medium, from which the computer program can be read by at least one processor of a communication device, the execution of the computer program by the at least one processor causing the communication device to implement the communication method according to any one of claims 1 to 16.