WO2020061881A1

WO2020061881A1 - Method and apparatus for dynamically determining carrier

Info

Publication number: WO2020061881A1
Application number: PCT/CN2018/107849
Authority: WO
Inventors: 曹永照; 杨育波; 窦圣跃; 王婷; 李元杰
Original assignee: 华为技术有限公司
Priority date: 2018-09-27
Filing date: 2018-09-27
Publication date: 2020-04-02

Abstract

Provided in the present application are a method and apparatus for dynamically determining a carrier: when an uplink reference signal carried on a first frequency domain resource occupies at least two time units, on the basis of the number of time units occupied by the uplink reference signal, the present method determines a frequency domain resource for carrying a physical uplink control channel, the first frequency domain resource being a frequency domain resource assigned by a network device and used for carrying a physical uplink control channel and an uplink reference signal, and the terminal device sends the uplink reference signal by means of the first frequency domain resource and sends the physical uplink control channel by means of a second frequency domain resource; by means of dynamically adjusting the transmission carrier of the PUCCH, the present method prevents transmission conflict of the PUCCH and the SRS, thereby ensuring the reliability of uplink transmission and improving transmission performance.

Description

Method and device for dynamically determining carrier

Technical field

The present application relates to the field of communications, and more particularly, to a method and an apparatus for dynamically determining a transmission carrier of an uplink control channel.

Background technique

In a long term evolution (LTE) system, during the uplink transmission of sounding reference signals (SRS), a code division multiple access mode is used. Generally, the SRS is located at the last symbol or uplink transmission of an uplink subframe. On multiple uplink symbols of a special frame. However, due to the small proportion of uplink subframes, the number of SRS symbols is small, which greatly limits the capacity of the SRS.

During the uplink transmission of SRS, the base station can send the SRS subframe configuration to the terminal device through high-level signaling, indicating the SRS transmission period and offset, and the terminal device can determine the specific time-frequency resources for SRS transmission. At present, there are many schemes to improve the capacity and coverage of the SRS. For example, one slot of the uplink subframe can be allocated to send the SRS. In the existing scheme, the SRS is located at the end of the physical uplink control channel (PUCCH). On one symbol, if the SRS is sent on the last symbol, the last symbol of the PUCCH will be discarded using truncation mode. When the symbols of the SRS are extended to multiple symbols, there will be a conflict between the transmission of the SRS and the transmission of the PUCCH. For example, all 7 symbols corresponding to a 0.5ms time slot are allocated to the SRS, and the uplink transmission of the SRS must conflict with the resources of the PUCCH.

Therefore, there is a need for a communication method that avoids conflicts between SRS transmission and PUCCH transmission when uplink carrier aggregation is configured or the number of symbols occupied by the SRS is more than one slot.

Summary of the Invention

The present application provides a method and a device for dynamically determining a transmission carrier of an uplink control channel, which can avoid conflicts between SRS transmission and PUCCH transmission, ensure reliability of uplink transmission, and improve transmission performance.

According to a first aspect, a communication method is provided, including: determining a second frequency domain resource when an uplink reference signal carried by a first frequency domain resource occupies at least two time units, wherein the first frequency domain resource is a network A frequency domain resource allocated by the device for carrying a physical uplink control channel and an uplink reference signal; sending the uplink reference signal through the first frequency domain resource; and sending the physical uplink control channel through the second frequency domain resource.

With the communication method provided in this application, when the number of SRS symbols increases in the case of uplink CA, the problem of sending conflicts between the PUCCH and the uplink reference signal can be avoided. Specifically, the present application mainly determines the PUCCH transmission carrier dynamically according to the number of symbols occupied by the uplink reference signal. The existing PUCCH transmission carrier is fixed and sent on the uplink primary carrier of the configured terminal device. In this application, the RRC signal is used. When the frequency domain resources allocated by the base station for carrying the PUCCH and the uplink reference signal conflict are determined, and the uplink reference signal occupies at least two time units, the PUCCH transmission carrier will be dynamically adjusted, and the PUCCH will be switched to another carrier. The base station receives the PUCCH on the corresponding carrier, thereby ensuring the accuracy of communication between the base station and the terminal equipment, and improving the reliability of transmission.

It should be understood that the time unit herein may refer to a transmission time interval (TTI) of uplink transmission. For example, the basic time unit for transmission is one TTI, and the length of one TTI can be 1 ms; one time unit can be one or more time slots, or one or more symbols, which is not limited in this application.

It should also be understood that the second frequency domain resource here refers to the transmission resource that the terminal device re-determines for the PUCCH, that is, the carrier is re-determined.

The terminal device determines the first frequency domain resource by using the configuration information of the first frequency domain resource, and the configuration information of the first frequency domain resource may be carried in high-layer signaling or in physical layer signaling. In the embodiment of the present application, the high-level signaling may be radio resource control (RRC) signaling, or media access control (MAC) layer signaling; the physical layer signaling may be downlink Control information DCI. The embodiment of the present application does not limit the method for configuring the threshold.

It should also be understood that the terminal device may determine the second frequency domain resource according to the situation that the uplink reference signal carried in the first frequency domain resource occupies at least two time units; or the terminal device may also accept an instruction from the network device and determine If the uplink reference signal carried by a frequency domain resource occupies at least two time units, and then determine the second frequency domain resource, this embodiment of the present application does not limit this.

With reference to the first aspect, in some possible implementation manners, when the uplink reference signal carried by the first frequency domain resource occupies at least two time units, determining the second frequency domain resource includes: indexing multiple frequency domain resources The frequency domain resource with the largest number is determined as the second frequency domain resource; or the frequency domain resource with the smallest index number among the multiple frequency domain resources is determined as the second frequency domain resource.

Optionally, the terminal device may determine the frequency domain resource with the largest index number among the multiple frequency domain resources for which the uplink reference signal is not sent as the second frequency domain resource; or multiple frequency domains for which the uplink reference signal is not sent. The frequency domain resource with the smallest index number among the resources is determined as the second frequency domain resource. For example, among all uplink carriers that do not send SRS, they are determined according to the index number of the carrier. For example, the carrier with the highest index number may be determined as the carrier for PUCCH switching, that is, the second frequency domain resource.

Or, among all uplink carriers that have not sent SRS, the terminal device determines according to the carrier ID. For example, the terminal device may determine the smallest index number or ID as the carrier for PUCCH switching, that is, the second frequency domain resource.

It should be understood that the SRS is sent according to the configuration information or trigger information on the base station side, so both the base station and the terminal device can determine the uplink carrier of the SRS that is not currently being transmitted.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the method further includes: receiving downlink control information DCI; and determining the second frequency domain resource according to the DCI.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, determining the second frequency domain resource according to the DCI includes: determining the second frequency domain resource according to the first indication information included in the DCI. .

Optionally, the first indication information is indication information of a DCI indication domain added in the DCI.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, determining the second frequency domain resource according to the indication information of the uplink reference signal indication field included in the DCI includes: Determining the frequency domain resource indicated by the information as the second frequency domain resource; or determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset offset relationship; or according to the first instruction information The indicated frequency domain resource and a preset conversion relationship determine the second frequency domain resource.

For example, the terminal device may implicitly determine the carrier that the PUCCH needs to switch according to the domain of the SRS in the DCI.

In a possible implementation manner, the terminal device directly determines the frequency domain resource indicated by the first indication information as the second frequency domain resource. The base station can establish a one-to-one correspondence between the value indicated by the SRS domain and the index number of the carrier, and the terminal device can determine the carrier for PUCCH switching according to the value indicated by the SRS domain.

Alternatively, the terminal device determines the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset offset relationship. The base station can establish a predefined offset relationship between the value indicated by the SRS domain and the index number of the carrier, and the terminal device can determine the carrier for PUCCH switching according to the value indicated by the SRS domain plus the predefined offset value.

Alternatively, the terminal device determines the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset conversion relationship. The base station can establish a predefined conversion relationship between the value indicated by the SRS domain and the index number of the carrier, and the terminal device can determine the carrier for PUCCH switching according to the value indicated by the SRS domain plus the predefined conversion value.

With reference to the first aspect and the foregoing implementation manners, in some possible implementation manners, the second frequency domain resource is a channel resource used to send frequency domain resources of a physical uplink shared channel. When the reference signal occupies at least two time units, determining the second frequency domain resource includes: determining a third frequency domain resource from a plurality of frequency domain resources of the physical uplink shared channel, and the third frequency domain resource is allocated by a network device. A frequency domain resource used to carry a physical uplink data channel; and the second frequency domain resource is determined according to the third frequency domain resource.

It should be understood that if the terminal device needs to send uplink data on the PUSCH in a certain subframe and also needs to send uplink control information UCI, the uplink control information will be multiplexed with the data and transmitted on the PUSCH together.

Therefore, in the case of uplink carrier aggregation, if the carrier transmitted by the SRS conflicts with the carrier of the PUCCH and the number of symbols occupied by the SRS is multiple symbols or one time slot or more, at this time, the PUCCH can be switched to another On one carrier, PUSCH can be used to send along the way.

Specifically, the determination of the associated carrier of the PUSCH may have the following principles:

(1) The terminal device determines whether there is data transmission on the uplink carrier according to the downlink control signaling DCI sent by the base station side, and thus preferentially selects the associated carrier on the carrier where the data is transmitted as the PUCCH transmission carrier.

(2) Among all uplink carriers that have not sent SRS, they are determined according to the index number of the carrier. For example, the carrier with the highest index number may be determined as the carrier for PUCCH switching, that is, the second frequency domain resource.

(3) Among all uplink carriers that have not sent SRS, the terminal device determines according to the carrier ID. For example, the terminal device may determine the smallest index number as the carrier for PUCCH switching, that is, the second frequency domain resource.

(4) The terminal device may implicitly determine the carrier to which the PUCCH needs to be switched according to the SRS domain in the DCI. For example, the base station may establish a one-to-one correspondence between the value indicated by the SRS domain and the index number of the carrier, and the terminal device may determine the carrier for PUCCH switching according to the value indicated by the SRS domain; or the base station may establish the value indicated by the SRS domain and the carrier The pre-defined offset relationship between the index numbers of the mobile terminal, the terminal device can determine the carrier for PUCCH switching according to the value indicated by the SRS domain plus the pre-defined offset value; or, the base station can establish the value indicated by the SRS domain With the predefined conversion relationship between the carrier and the index number of the carrier, the terminal device can determine the carrier for PUCCH switching according to the value indicated by the SRS domain plus the predefined conversion value.

It should be understood that the existing PUCCH transmission carrier is fixedly transmitted on the uplink primary carrier of the configured terminal device, and when this application conflicts with the SRS transmission, it is adjusted to other carriers for transmission along the route. The above method switches the transmission carrier of the PUCCH to the associated carrier of the PUSCH, and there is no problem of simultaneous transmission of the SRS and the PUCCH.

In a second aspect, a communication method is provided, including: determining a second frequency domain resource in a case where an uplink reference signal carried by a first frequency domain resource occupies at least two time units, wherein the first frequency domain resource is A frequency domain resource allocated by a network device for carrying a physical uplink control channel and an uplink reference signal; receiving the uplink reference signal through the first frequency domain resource; and receiving the physical uplink control channel through the second frequency domain resource.

Through the above-mentioned communication method provided in this application, in the case of uplink CA, when the number of SRS symbols increases, the problem of sending conflicts between PUCCH and SRS can be avoided. Specifically, the present application mainly determines the PUCCH transmission carrier based on the number of SRS symbols. The existing PUCCH transmission carrier is fixed and sent on the uplink primary carrier of the configured terminal device, and the base station is determined by RRC signaling in this application. When the allocated frequency domain resources used to carry the PUCCH and the uplink reference signal conflict, and the uplink reference signal occupies at least two time units, the PUCCH transmission carrier will be dynamically adjusted, and the PUCCH will be switched to another carrier. The PUCCH is received on the carrier of the mobile phone, thereby ensuring the accuracy of communication between the base station and the terminal device, and improving the reliability of transmission.

It should be understood that in the process of determining the second frequency domain resource of the PUCCH handover by the terminal device and the base station described above, there are multiple ways to achieve it. For example, both the terminal device and the base station can be preset through protocols and other configurations based on the same rules. Or, the terminal device requests the base station to indicate how to determine the carrier for PUCCH switching. After receiving the request from the terminal device, the base station sends the configuration information of the PUCCH to the terminal device, and the terminal device determines based on the configuration information; or, the terminal device determines it autonomously The switched carrier, and then the carrier information is sent to the base station to notify the base station to receive the PUCCH on the corresponding carrier, thereby ensuring the accuracy of communication between the base station and the terminal device and improving the reliability of transmission.

This application will dynamically adjust the PUCCH transmission carrier based on the number of SRS symbols. In this way, when transmitting the SRS on the primary carrier, the PUCCH is adjusted to the secondary carrier for transmission, thereby not affecting the transmission of the PUCCH and SRS, and simultaneously increasing the capacity of the SRS and cover.

With reference to the second aspect, in some possible implementation manners, when the uplink reference signal carried by the first frequency domain resource occupies at least two time units, determining the second frequency domain resource includes: indexing multiple frequency domain resources The frequency domain resource with the largest number is determined as the second frequency domain resource; or the frequency domain resource with the smallest index number among the multiple frequency domain resources is determined as the second frequency domain resource.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the method further includes: generating downlink control information DCI, where the DCI is used to indicate the second frequency domain resource; and sending the DCI.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the DCI includes first indication information, and the first indication information is used to determine the second frequency domain resource.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the frequency domain resource indicated by the first indication information is determined as the second frequency domain resource; or according to the frequency domain resource indicated by the first indication information Determine the second frequency domain resource with a preset offset relationship; or determine the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset conversion relationship.

With reference to the second aspect and the foregoing implementation manners, in some possible implementation manners, the second frequency domain resource is a channel resource used to send frequency domain resources of a physical uplink shared channel, and the uplink frequency carried by the first frequency domain resource should be When the reference signal occupies at least two time units, determining the second frequency domain resource includes: determining a third frequency domain resource from a plurality of frequency domain resources of the physical uplink shared channel, and the third frequency domain resource is allocated by a network device. A frequency domain resource used to carry a physical uplink data channel; and the second frequency domain resource is determined according to the third frequency domain resource.

According to a third aspect, a communication device is provided, including: a processing unit configured to determine a second frequency domain resource when an uplink reference signal carried by a first frequency domain resource occupies at least two time units, wherein the first frequency domain resource The frequency domain resource is a frequency domain resource allocated by a network device to carry a physical uplink control channel and an uplink reference signal; a communication unit is configured to send the uplink reference signal through the first frequency domain resource; the communication unit is further configured to pass the The second frequency domain resource sends the physical uplink control channel.

With reference to the third aspect, in some possible implementation manners, the processing unit is further configured to: determine the frequency domain resource with the largest index number among the multiple frequency domain resources as the second frequency domain resource; or determine multiple frequency domains The frequency domain resource with the smallest index number among the resources is determined as the second frequency domain resource.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the communication unit is further configured to receive downlink control information DCI; and the processing unit is further configured to determine the second frequency domain resource according to the DCI.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the processing unit is further configured to determine the second frequency domain resource according to the first indication information included in the DCI.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the processing unit is further configured to determine a frequency domain resource indicated by the first indication information as the second frequency domain resource; or according to the first indication Determining the second frequency domain resource by the frequency domain resource indicated by the information and a preset offset relationship; or determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset conversion relationship.

With reference to the third aspect and the foregoing implementation manners, in some possible implementation manners, the second frequency domain resource is a channel resource used to send frequency domain resources of a physical uplink shared channel, and the uplink frequency carried by the first frequency domain resource should be When the reference signal occupies at least two time units, the processing unit is further configured to determine a third frequency domain resource from a plurality of frequency domain resources of the physical uplink shared channel, where the third frequency domain resource is allocated by a network device for bearer A frequency domain resource of a physical uplink data channel; and determining the second frequency domain resource according to the third frequency domain resource.

According to a fourth aspect, a communication device is provided, including: a processing unit configured to determine a second frequency domain resource when an uplink reference signal carried by a first frequency domain resource occupies at least two time units, wherein the first frequency domain resource The frequency domain resource is a frequency domain resource allocated by a network device for carrying a physical uplink control channel and an uplink reference signal; a communication unit is configured to receive the uplink reference signal through the first frequency domain resource and receive through the second frequency domain resource The physical uplink control channel.

With reference to the fourth aspect, in some possible implementation manners, the processing unit is further configured to determine the frequency domain resource with the largest index number among the multiple frequency domain resources as the second frequency domain resource; or determine multiple frequency domain resources The frequency domain resource with the smallest index number is determined as the second frequency domain resource.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the processing unit is further configured to generate downlink control information DCI, the DCI is used to indicate the second frequency domain resource, and the communication unit is further configured to send the DCI.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the DCI includes first indication information, and the first indication information is used to determine the second frequency domain resource.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the processing unit is further configured to determine a frequency domain resource indicated by the first indication information as the second frequency domain resource; or according to the first indication Determining the second frequency domain resource by the frequency domain resource indicated by the information and a preset offset relationship; or determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset conversion relationship.

With reference to the fourth aspect and the foregoing implementation manners, in some possible implementation manners, the second frequency domain resource is a channel resource used to send frequency domain resources of a physical uplink shared channel, and the processing unit is further configured to receive the A third frequency domain resource is determined from the frequency domain resources of the physical uplink shared channel. The third frequency domain resource is a frequency domain resource allocated by a network device and used to carry a physical uplink data channel. According to the third frequency domain resource, the third frequency domain resource is determined. Second frequency domain resource.

In a fifth aspect, a communication device is provided, the communication device having a function of implementing a terminal device in the method design of the first aspect. These functions can be realized by hardware, and can also be implemented by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the functions described above.

According to a sixth aspect, a communication device is provided, and the communication device has a function of implementing a network device (for example, a base station) in the method design of the second aspect. These functions can be realized by hardware, and can also be implemented by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the functions described above.

According to a seventh aspect, a terminal device is provided, including a transceiver and a processor. Optionally, the terminal device further includes a memory. The processor is used to control the transceiver to send and receive signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the terminal device executes the foregoing first aspect or any one of the first aspect. Method in implementation.

According to an eighth aspect, a network device is provided, including a transceiver and a processor. Optionally, the network device further includes a memory. The processor is used to control the transceiver to send and receive signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the terminal device executes any one of the possible implementation manners of the second aspect. The method performed by the network device.

According to a ninth aspect, a communication system is provided, and the system includes the terminal device of the third aspect; or the system includes the network device of the third aspect.

According to a tenth aspect, a communication device is provided. The communication device may be a terminal device designed in the foregoing method, or a chip provided in the terminal device. The communication device includes a processor coupled to a memory, and may be configured to execute instructions in the memory to implement the first aspect or a method implemented by a terminal device in any possible implementation manner of the first aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

When the communication device is a terminal device, the communication interface may be a transceiver, or an input / output interface.

When the communication device is a chip configured in a terminal device, the communication interface may be an input / output interface.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

According to an eleventh aspect, a communication device is provided. The communication device may be a network device in the foregoing method design, or a chip provided in the network device. The communication device includes a processor coupled to the memory, and may be configured to execute instructions in the memory to implement the method described by the network device in the second aspect or any one of the possible implementation manners of the second aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

When the communication device is a network device, the communication interface may be a transceiver, or an input / output interface.

When the communication device is a chip configured in a network device, the communication interface may be an input / output interface.

According to a twelfth aspect, a computer program product is provided. The computer program product includes computer program code that, when the computer program code runs on a computer, causes the computer to execute the methods in the above aspects.

According to a thirteenth aspect, a computer-readable medium is provided. The computer-readable medium stores program code, and when the computer program code runs on a computer, the computer causes the computer to execute the methods in the foregoing aspects.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG. 2 is a schematic diagram of a time domain structure of an example radio frame.

FIG. 3 is a schematic diagram of RB distribution of PUCCH resources.

FIG. 4 is a schematic diagram of an example of a PUCCH and PUSCH multiplexing process provided by an embodiment of the present application.

FIG. 5 is a schematic interaction diagram of an example transmission method according to an embodiment of the present application.

FIG. 6 is a schematic diagram of another example of PUCCH resource configuration provided by an embodiment of the present application.

FIG. 7 is a schematic diagram of RE mapping of uplink control information UCI transmitted on a PUSCH according to an example of the present application.

FIG. 8 is a schematic block diagram of an example transmission apparatus according to an embodiment of the present application.

FIG. 9 is a schematic block diagram of another example of a transmission apparatus according to an embodiment of the present application.

FIG. 10 is a schematic structural diagram of an example of a terminal device according to an embodiment of the present application.

FIG. 11 is a schematic structural diagram of an example of a network device according to an embodiment of the present application.

detailed description

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

The technical solutions in the embodiments of the present application can be applied to various communication systems, such as: a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, and an LTE time division duplex (LTE time division duplex). (TDD), 5th generation (5G) mobile communication system or new wireless (NR) communication system, and future mobile communication system.

FIG. 1 is a schematic structural diagram of a mobile communication system applicable to an embodiment of the present application. As shown in FIG. 1, the mobile communication system 100 may include a core network device 110, a radio access network device 120, and at least one terminal device (such as the terminal device 130 and the terminal device 140 in FIG. 1). The terminal device is connected to the wireless access network device in a wireless manner, and the wireless access network device is connected to the core network device in a wireless or wired manner. The core network device and the wireless access network device can be separate and different physical devices, or the functions of the core network device and the wireless access network device's logical functions can be integrated on the same physical device, or they can be a physical device It integrates some functions of core network equipment and some functions of wireless access network equipment. The terminal equipment can be fixed or removable. FIG. 1 is only a schematic diagram, and the communication system may further include other network devices, such as a wireless relay device and a wireless backhaul device, 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 terminal devices included in the mobile communication system.

In the mobile communication system 100, the radio access network device 120 is an access device that the terminal device accesses to the mobile communication system by wireless. The radio access network device 120 may be: a base station, an evolved base station (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, and A relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc., can also be a gNB in an NR system, or it can be a component or part of a base station Equipment, such as a central unit (CU), a distributed unit (DU), or a baseband unit (BBU). It should be understood that, in the embodiments of the present application, specific technologies and specific device forms adopted by the radio access network device are not limited. In this application, the wireless access network device is referred to as a network device. Unless otherwise specified, in this application, the network device refers to a wireless access network device. In this application, the network device may refer to the network device itself, or a chip applied to the network device to perform a wireless communication processing function.

The terminal equipment in the mobile communication system 100 may also be referred to as a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like. The terminal device in the embodiment of the present application may be a mobile phone, a tablet, a computer with a wireless transmitting and receiving function, or a virtual reality (VR), augmented reality (AR) ), Industrial control (industrial control), driverless (self driving), remote medical (remote medical), smart grid (grid), transportation safety (transportation safety), smart city (smart city) and smart home (smart home) ) And other scenarios. In the present application, the foregoing terminal devices and chips applicable to the foregoing terminal devices are collectively referred to as terminal devices. It should be understood that the embodiment of the present application does not limit the specific technology and specific device form used by the terminal device.

In the description process of the embodiments of the present application, for convenience, a base station is used as a network device, and communication between the base station and a terminal device is mainly described by using an uplink transmission of a reference signal as an example. It should be understood that this application includes but is not limited to this.

It should be understood that the manner, situation, category, and division of the embodiments in the embodiments of the present application are only for convenience of description, and should not constitute a special limitation. The various manners, categories, situations, and features in the embodiments are not inconsistent. Cases can be combined.

It should also be understood that the “first”, “second”, and “third” in the embodiments of the present application are only for distinction, and should not constitute any limitation to the present application. For example, the "first frequency domain resource", "second frequency domain resource", and "third frequency domain resource" in the embodiments of the present application are used to indicate different transmission resources.

It should also be understood that, in the various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not deal with the embodiments of this application. The implementation process constitutes any limitation.

It should also be noted that in the embodiments of the present application, "pre-set" and "pre-defined" can be achieved by pre-storing corresponding codes, forms, or other relevant instructions in devices (for example, terminal devices and network devices). The information is implemented in a manner that is not limited in this application, such as a preset offset relationship, a preset conversion relationship, and the like in the embodiments of the present application.

It should also be noted that "and / or" describes the association relationship between the associated objects, and indicates that there can be three kinds of relationships, for example, A and / or B can indicate: A exists alone, A and B exist simultaneously, and B exists These three situations. The character "/" generally indicates that the related objects are an "or" relationship. The technical solutions provided in the present application will be described in detail below with reference to the drawings.

In order to facilitate understanding of the embodiments of the present application, the following briefly introduces several concepts involved in the present application.

1.Radio frame, time unit and time domain symbol

The time domain resources used by the base station and the terminal device for wireless communication can be divided into multiple wireless frames or time units. Moreover, in the embodiment of the present application, multiple radio frames may be continuous or a preset interval may be set between some adjacent radio frames, which is not particularly limited in the embodiments of the present application.

In the embodiment of the present application, one radio frame may include one or more subframes; or it may be one or more time slots; or it may be one or more symbols.

In the embodiment of the present application, the symbol is also referred to as a time-domain symbol, and may be an orthogonal frequency division multiple (OFDM) symbol, or a single carrier frequency division multiple access. (SC-FDMA) symbol, of which SC-FDMA is also known as orthogonal frequency division multiplexing (OFDM) with conversion precoding (transform precoding, OFDM with TP).

In the embodiment of the present application, multiple time units have a time series relationship in the time domain, and the time lengths corresponding to any two time units may be the same or different.

2.Frequency band and bandwidth

The unit of a frequency band is hertz (Hz), which refers to the portion of the radio spectrum between two specific frequency boundaries. For a signal, the frequency band is the frequency range between the highest frequency and the lowest frequency contained in the signal (considering that the frequency component must be greater than a certain value). For a channel, the frequency band is the frequency range between the highest frequency of the signal allowed to be transmitted and the lowest frequency of the signal allowed to be transmitted (considering that the attenuation must be within a certain range).

Generally speaking, for a channel, a frequency band is a frequency range between the highest frequency of a signal allowed to be transmitted and the lowest frequency of a signal allowed to be transmitted. If the two are very different, it can be considered that the frequency band is equal to the highest frequency of the signal allowed to be transmitted.

For a signal, a frequency band is the frequency range between the highest frequency and the lowest frequency contained in the signal. If the two are very different, you can roughly think that the frequency band is equal to the highest frequency of the signal.

The bandwidth is called "bandwidth" for short, sometimes called necessary bandwidth. It is the difference between the highest frequency and the lowest frequency of the signal when transmitting analog signals. The unit is Hz, which is the allowable bandwidth width required to ensure the rate and quality of certain transmitted information. value.

Effective bandwidth: The frequency range that a signal has is called the signal's bandwidth. Most of the energy of a signal is often contained in a narrow band of frequencies, which is the effective bandwidth.

3. Carrier and subcarrier

The carrier wave can be understood as a periodic oscillating signal operating at a predefined single frequency. For example, the carrier wave can be a sine wave or a non-sine wave such as a periodic pulse sequence. Changing the carrier to represent the data in a form suitable for transmission is what we call modulation. After the carrier is modulated, it is called a modulated signal, which contains the full-wave characteristics of the modulated signal. The transmitting device loads the data signal onto the carrier signal, and the receiving device accepts the data signal according to the frequency of the carrier wave. Furthermore, the extraction of these signals is the required data signal.

The subchannels in multi-carrier communication are called subcarriers. In the LTE system, one subcarrier in the frequency domain can be 15kHz. Through orthogonal frequency division multiplexing technology, serial data streams are converted into parallel data streams. And use different subcarriers to carry data signals.

4. Uplink control information (UCI)

The uplink control information UCI is sent and received on two different physical channels, namely the physical uplink control channel (PUCCH) and the physical uplink shared channel (PUSCH), but the UCI is different. The content transmitted on the physical channel is different.

When UCI is transmitted on PUSCH, it may include: aperiodic channel quality indication (A-CQI), pre-coded matrix indication (PMI), rank indication (RI), Hybrid automatic retransmission request response (hybrid, automatic, repeat-request, acknowledgement, HARQ-ACK) message.

When UCI is transmitted on the PUCCH, it may include: periodic channel quality indication (P-CQI), precoding matrix indication PMI, HARQ-ACK, and schedule request (SR) messages.

5. Sounding reference signal (SRS) transmission

Taking the LTE system as an example, the SRS is located on the last symbol of an uplink subframe or on multiple uplink symbols of a special frame for uplink transmission. However, due to the small proportion of uplink subframes, the number of SRS symbols is small, which greatly limits the capacity of the SRS. An uplink subframe-downlink subframe configuration in an LTE system is shown in Table 1 below. Currently, the following configuration method 2 is widely used.

Table 1

In configuration mode 2 shown in Table 1 above, during an uplink subframe-downlink subframe switching period, each subframe is allocated as shown above, where D represents a downlink transmission subframe, U represents an uplink transmission subframe, and S represents a special Subframe.

FIG. 2 is a schematic diagram of a time domain structure of an example radio frame. Taking the time domain structure of the LTE system as an example, as shown in Figure 2, the length of a radio frame is 10ms, and each radio frame contains two 5ms half frames, and each half frame contains five 1ms subframes. Each subframe includes two time slots, each time slot T ₃ = 0.5 ms, each time slot can include 7 OFDM symbols, that is, each subframe can include 14 OFDM symbols. Therefore, because the SRS is located at the last symbol of the uplink subframe, in FIG. 2, the SRS is transmitted only on the last symbol of the uplink subframe, that is, the symbol # 14, as shown by the shaded symbol in FIG. 2.

The configuration of the special subframe includes three parts: a downlink pilot time slot (DwPTS), a guard interval (GP), and an uplink pilot time slot (UpPTS). The SRS can also be transmitted on the symbol of the UpPTS time slot. This application mainly focuses on the transmission of the SRS on the uplink subframe, and does not explain too much about the transmission of the SRS on the symbol of the UpPTS time slot.

In the uplink transmission process of SRS, code division multiple access mode is adopted. For LTE, it supports transmission of up to 4 antennas. For antennas,

The SRS sequence can be expressed as formula (1).

among them,

Is the basic sequence determined by u and v, u is the number of the sequence group, and v is the sequence number;

Is the length of the SRS sequence. SRS cyclic shift

Calculated according to the following formula:

among them,

It can be configured by high-level signaling. N _ap ∈ {1,2,4} is the number of antennas used for SRS transmission, and the maximum number of antennas is 4.

During the uplink transmission of the SRS, the base station can send the subframe configuration of the SRS to the terminal device through high-level signaling, indicating the SRS transmission period and offset. The terminal device can determine specific time-frequency resources for SRS transmission. For example, the base station configures the cell-level SRS bandwidth C _SRS ∈ {0,1,2,3,4,5,6,7} through high-level signaling. A cell-level SRS bandwidth includes four UE-level SRS bandwidths B _SRS ∈ {0,1,2,3}, and configure the subcarrier comb parameters for SRS transmission

(Because there is only one subcarrier spaced during transmission) and the frequency domain position parameter n _RRC . Through these parameters, the terminal device can determine specific frequency domain resources for SRS transmission.

It should be understood that the base station may configure the time-frequency resource position occupied by the SRS resource through high-level signaling or medium access control-control element (MAC-CE) signaling, and use the SRS resource to send the SRS on the SRS resource. Sending method. In the embodiment of the present application, the high-level signaling may be radio resource control (radio resource control (RRC) signaling).

Specifically, the configuration information of each SRS resource includes at least the index number of the SRS resource, the time-frequency position information occupied by the SRS resource, the number of SRS ports, the time domain transmission type, the SRS transmission beam information, and the purpose of the SRS. The resources occupied by sending the SRS can be determined according to various configuration parameters, which is not limited in this application.

It should be understood that the minimum detection bandwidth indicated by the SRS resource in the frequency domain is 4 physical resource blocks (PRBs), where a PRB includes 12 consecutive subcarriers in the frequency domain and 7 in the time domain. Consecutive OFDM symbols (6 in the case of extended cyclic prefix), that is, a PRB with a frequency domain width of 180 KHz and a physical resource with a time length of 0.5 ms.

The time domain types of SRS resources configured in the time domain are periodic, semi-static, and aperiodic. There is no frequency hopping for aperiodic SRS transmission, and hopping can be used for periodic SRS. The frequency hopping bandwidth of different SRS resources has an integer multiple relationship, and the frequency hopping pattern has a tree structure. The frequency hopping at this time is between sub-frames, and the frequency domain resource positions occupied by the SRS on different sub-frames are different. Among them, the periodic SRS resource configuration parameters include the SRS resource slot-level period (for example, 2ms, 5ms, 10ms) and the slot-level offset. After the base station configures the SRS resources through RRC signaling, the terminal device will perform The configuration information sends SRS on the determined SRS resources; the aperiodic SRS resource configuration parameters do not include the SRS resource slot-level period. After the base station configures the SRS resources through RRC signaling, it sends a DCI in a slot. This DCI is used The SRS is instructed and the SRS resource is triggered. The terminal device uses the slot where the DCI is located as a reference and sends the SRS on the determined SRS resource according to a pre-configured slot offset. For example, if the DCI indicates in the slot and the pre-configured slot offset is k, the terminal device will send an SRS on the SRS resource of slot (n + k).

The uses of SRS can be summarized as:

(1) The base station can use SRS to estimate uplink channel quality in different frequency bands, that is, perform uplink channel measurement. Specifically, the base station-side scheduler can allocate a resource block (RS) with good instantaneous channel status to the PUSCH of the terminal device for uplink transmission based on the uplink channel state estimation, and can select different transmission parameters (such as instantaneous Data rate, etc.).

(2) SRS can be used for antenna selection. Specifically, the terminal device uses different antennas to send different SRSs, and selects different parameters corresponding to uplink multi-antenna transmission for selective uplink frequency scheduling.

(3) SRS can be used for uplink beam training (terminal equipment uses different transmit beams to send different SRS resources). Multiple SRS resources with the same purpose can be configured in an SRS resource set. The SRS resource set can include configuration information common to multiple SRS resources. For example, multiple SRS resources in one SRS resource set are used for uplink. Codebook transmission or uplink non-codebook transmission or used for beam training. You can also configure multiple SRS resources in an SRS resource set to be periodic or aperiodic. You can also configure multiple SRS resources in an SRS resource set to have The same number of ports, etc.

(4) SRS can also be used to estimate uplink timing, and under the assumption of mutual benefits of the downlink / uplink channels (especially TDD), use channel symmetry to estimate the downlink channel quality.

Based on the importance of the above SRS, there are currently many schemes to improve the capacity and coverage of the SRS. For example, one slot of an uplink subframe can be allocated to send the SRS.

FIG. 3 is a schematic diagram of RB distribution of PUCCH resources. The PUCCH is generally configured to be located at the edge of the uplink system bandwidth in the frequency domain. As shown in FIG. 3, the resources shown in the shaded part may be resources used for PUCCH transmission. One PUCCH occupies 2 slots in one uplink subframe, and each slot occupies 12 subcarriers in the frequency domain, that is, 1 RB.

In order to provide frequency domain diversity, PUCCH can hop at the boundary of the slot. That is, in the same subframe, the PRB resources of the two slots before and after the PUCCH are located at both ends of the available spectrum resources. These two PRBs form an RB pair. However, in the frequency domain resources, we call them account for One RB, and the entire block of spectrum resources in the middle is used to transmit PUSCH, and the resources shown in the entire white area in FIG. 3 are used to transmit PUSCH. Such a design can not only provide the frequency diversity gain of the PUCCH, but also not disperse the spectrum resources of the uplink transmission, and ensure the single-carrier characteristic of the uplink transmission. In the existing scheme, the SRS is located on the last symbol of the PUCCH. If the SRS is sent on the last symbol, the last symbol of the PUCCH will be dropped and the truncation mode will be used.

In addition, in the channel multiplexing process, a more complex collision mechanism is needed. For example, in the PUCCH and PUSCH multiplexing process shown in FIG. 4, the SRS of user # 1, user # 2, user # 3, and user # 4 in FIG. The transmission is concentrated on the seventh symbol of a time slot, and the terminal device sends SRS and UCI on different carriers according to the configuration information of the base station. It will reduce the transmission performance of other channels by removing SRS or puncturing PUSCH or using PUCCH in truncation mode. Moreover, when the number of symbols occupied by the SRS is multiple or more than one slot, the transmission of the SRS will conflict with the transmission of the PUCCH in this case. For terminal equipment configured with uplink carrier aggregation (CA), the PUCCH can only be transmitted on the carrier of the primary cell (PCell). Then, the PUCCH and SRS transmission of the primary carrier will inevitably occur at this time. Conflict issues. Even if the secondary carrier is idle, the PUCCH can only be transmitted on the primary carrier, which limits the SRS to the last symbol, which limits the capacity and coverage of the SRS. When the symbols of the SRS are extended to multiple symbols, there will be a conflict between the transmission of the SRS and the transmission of the PUCCH. For example, all 7 symbols corresponding to a 0.5ms time slot are allocated to the SRS, and the uplink transmission of the SRS must conflict with the resources of the PUCCH.

Therefore, there is a need for a communication method. When uplink carrier aggregation is configured or the number of symbols occupied by SRS is multiple or more than one time slot, the conflict between SRS transmission and PUCCH transmission is avoided. The communication method provided in this application mainly Dynamically adjust the PUCCH transmit carrier to avoid PUCCH and SRS transmission conflicts, thereby ensuring the reliability of uplink transmission and improving transmission performance.

The communication method provided in the embodiment of the present application will be described in detail below with reference to FIGS. 5 to 7.

FIG. 5 is a schematic interaction diagram of an example transmission method 500 according to an embodiment of the present application. In the following, each step of the method 500 including S510-S530 is described in detail.

It should be understood that, in the embodiment of the present application, the terminal device and the base station are used as the execution subjects of the execution method 500 to describe the method 500. By way of example and not limitation, the execution subject of the execution method 500 may also be a chip applied to a terminal device and a chip applied to a base station.

S510: The base station sends configuration information of a first frequency domain resource to the terminal device, where the first frequency domain resource is a frequency domain resource allocated by the base station to the terminal device for carrying a physical uplink control channel and an uplink reference signal.

FIG. 6 is another schematic diagram of resource configuration of a physical uplink control channel PUCCH according to an embodiment of the present application. With reference to FIG. 6, FIG. 6 shows a schematic diagram of frequency domain resources of a PUCCH transmission resource in one time slot, and the PUCCH may be transmitted through 12 carriers. The first frequency domain resource mentioned in this application may be the frequency domain resource allocated by the base station to the terminal device to carry the PUCCH. As shown in FIG. 6, the first frequency domain resource may include at least one carrier, such as the first frequency domain. The resource includes three carriers in FIG. 6, such as carrier 2, carrier 4, and carrier 5. FIG. 6 also shows the frequency domain resources of the uplink reference signal, for example, the SRS transmission resource of the user # 1 and the SRS transmission resource of the user # 2 shown in the shaded part.

For example, the terminal device may determine, according to the configuration information of the RRC signaling, the frequency domain resources allocated by the base station to the terminal device for carrying the physical uplink control channel and the uplink reference signal, and determine that the current uplink transmission is carrier aggregation. It should be understood that in the embodiments of the present application, a sounding reference signal (SRS) is used as an uplink reference signal for detailed description, and the specific form of the uplink reference signal is not limited in this application.

S520. When the uplink reference signal carried by the first frequency domain resource occupies at least two time units, the terminal device determines the second frequency domain resource.

If, based on the parameters configured by RRC, the terminal device determines that the carrier transmitted by the SRS and the carrier of the PUCCH are the same carrier, and the terminal device determines that the number of symbols occupied by the SRS is multiple symbols or one slot or more, then, at this time, There will be resource conflicts between PUCCH transmission resources and SRS resources. In order to avoid resource conflicts between PUCCH and SRS, this application switches the carrier sent by PUCCH to another carrier.

For example, taking FIG. 6 as an example, if the resources of the PUCCH are configured as carrier 2, carrier 4, and carrier 5, the SRS transmission of user # 1 is also configured on carrier 2, carrier 4, carrier 6, carrier 8, carrier 10, and carrier 12, but for carrier 4 and carrier 5, the number of symbols occupied by the SRS is 3, then the transmission of the SRS will conflict with the transmission of the PUCCH. At this time, the second frequency domain resource can be re-determined according to the following method. A new carrier is to be determined for PUCCH transmission.

method one

When the uplink reference signal carried by the first frequency domain resource occupies at least two time units, the terminal device determines the frequency domain resource with the largest index number among the plurality of frequency domain resources as the second frequency domain resource.

Optionally, the terminal device may determine, as the second frequency domain resource, a frequency domain resource with a largest index number among multiple frequency domain resources that have not sent the uplink reference signal.

Specifically, for a carrier where the transmission of any one of the SRSs in FIG. 6 will conflict with the transmission of the PUCCH, the transmission of the PUCCH may be switched from carrier 4 to carrier 1, carrier 3, carrier 6 to carrier 12 That is, among all uplink carriers that have not sent SRS, they are determined according to the index number of the carrier. For example, the carrier with the highest index number may be determined as the carrier for PUCCH switching, that is, the second frequency domain resource.

Method Two

When the uplink reference signal carried by the first frequency domain resource occupies at least two time units, the terminal device determines the frequency domain resource with the smallest index number among the multiple frequency domain resources as the second frequency domain resource.

Optionally, the terminal device may determine, as the second frequency domain resource, the frequency domain resource with the smallest index number among multiple frequency domain resources that have not sent the uplink reference signal.

In the same method, the frequency domain resource with the smallest index number among the multiple frequency domain resources for which the uplink reference signal is not sent is determined as the second frequency domain resource. Among all uplink carriers that have not sent SRS, the terminal device determines according to the carrier ID. For example, the terminal device may determine the smallest index number as the carrier for PUCCH switching, that is, the second frequency domain resource.

Method three

When the uplink reference signal carried by the first frequency domain resource occupies at least two time units, the terminal device may also determine the second frequency domain resource according to the downlink control information DCI sent by the receiving base station.

Optionally, the terminal device may determine the second frequency domain resource according to the first indication information included in the DCI.

For example, the domain of the SRS in the DCI is indicated as: SRS request-0, 1, or 2 bits. The terminal device may represent the transmission carrier where the PUCCH is located according to the value indicated by this field. It should be understood that the format of the DCI is not limited in this application.

Optionally, a DCI domain may be added to the DCI. This domain is used only when the resources configured with SRS exceed one time slot. This domain is used to indicate that the carrier is sent by PUCCH. This domain may be based on the cell level of the SRS configured by RRC. The number of symbols to determine whether it exists, or has always existed.

For example, the DCI of the existing LTE may be an arbitrary DCI, and a carrier indicator (PUCCH) 2bit field of the PUCCH is added.

Alternatively, the terminal device may be implicitly associated with another carrier according to the carrier ID that sends the SRS. For example, if the SRS transmission carrier and the PUCCH transmission carrier are the same, then the PUCCH carrier is switched to the SRS carrier ID + 2 uplink carrier for transmission. The inclusion of a computer in this application is not limited to this.

Method four

Optionally, the second frequency domain resource may be a channel resource used to send the frequency domain resource of the physical uplink shared channel PUSCH. When the uplink reference signal carried by the first frequency domain resource occupies at least two time units, the terminal device sends the A third frequency domain resource is determined from a plurality of frequency domain resources of the physical uplink shared channel. The third frequency domain resource is a frequency domain resource allocated by the base station to carry a physical uplink data channel, and according to the third frequency domain resource, Determine the second frequency domain resource.

When the uplink control information UCI is transmitted on the PUSCH, its mapping to the RE is shown in FIG. 7. In one subframe in FIG. 7, transmission resources of SRS, transmission resources of RI and HARQ-ACK, transmission resources of PUSCH, and transmission resources of CQI and PMI are shown, respectively. It can be seen that CQI and PMI are time-division multiplexed into the PUSCH. The mapping method of RI and CQI / PMI is different, but similar to ACK / NACK, it is located on the RE near the demodulation reference signal (DMRS), so that RI is more robust than CQI / PMI. The reason for this is that the premise of correctly decoding the CQI / PMI is that the RI has been correctly decoded.

If space division multiplexing is used in the uplink, two TBs will be transmitted on the PUSCH at this time. At this time, CQI and PMI will be multiplexed to the transmission block (TB) using the highest modulation and coding scheme (MCS), and Multiplexing is performed on each layer to which the TB is mapped.

If the uplink uses space division multiplexing, ACK / NACK and RI will be repeatedly transmitted on all layers, and each layer will be multiplexed with the encoded data using the same multiplexing method as in single-layer transmission. At this time, the same information is transmitted on each layer, but different layers will use different scrambling, thereby providing diversity gain.

Therefore, in the case of uplink carrier aggregation, if the carrier transmitted by the SRS conflicts with the carrier of the PUCCH and the number of symbols occupied by the SRS is multiple symbols or one time slot or more, at this time, the PUCCH can be switched to another When on a carrier, PUSCH can be used to send along the route. Specifically, the determination of the PUSCH's associated carrier can be based on the following principles:

(3) Among all uplink carriers that have not sent SRS, the terminal device determines according to the carrier ID. For example, it can determine the carrier with the smallest index number as the PUCCH handover carrier, that is, the second frequency domain resource.

Specifically, for a detailed determination method, reference may be made to the description in Method 1 to Method 3 above, and for the sake of simplicity, it will not be repeated here.

It should be understood that the existing PUCCH transmission carrier is fixedly transmitted on the uplink primary carrier of the configured terminal device, and when this application conflicts with the SRS transmission, it is adjusted to other carriers for transmission along the route. The above method 4 is compared to the methods 1 to 3, because the switching carrier of the PUCCH is switched to the associated carrier of the PUSCH, and there is no problem of simultaneous transmission of the SRS and the PUCCH.

S530. The terminal device sends the uplink reference signal through the first frequency domain resource, and sends the physical uplink control channel through the second frequency domain resource. Correspondingly, the base station receives the uplink reference signal through the first frequency domain resource, and receives the physical uplink control channel through the second frequency domain resource.

The communication method according to the embodiment of the present application has been described in detail above with reference to FIGS. 1 to 7. Hereinafter, the communication device according to the embodiment of the present application will be described in detail with reference to FIGS. 8 to 11.

FIG. 8 shows a schematic block diagram of a transmission device 800 according to an embodiment of the present application. The device 800 may correspond to the terminal device described in the foregoing method 500, and may also be a chip or component applied to the terminal device. Each module or unit is respectively configured to perform each action or process performed by the terminal device in the foregoing method 500. As shown in FIG. 8, the communication device 800 may include a processing unit 810 and a communication unit 820.

The processing unit 810 is configured to determine a second frequency domain resource when the uplink reference signal carried by the first frequency domain resource occupies at least two time units, where the first frequency domain resource is allocated by a network device and used to carry a physical uplink. Frequency domain resources for control channels and uplink reference signals.

The communication unit 820 is configured to send the uplink reference signal through the first frequency domain resource.

The communication unit 820 is further configured to send the physical uplink control channel through the second frequency domain resource.

Specifically, the processing unit 810 is configured to perform S520 in method 500, and the communication unit 820 is configured to perform S510 and S530 in method 500. The specific process of each unit performing the above corresponding steps has been described in detail in method 500. For the sake of brevity , I won't go into details here.

FIG. 9 shows a schematic block diagram of a transmission apparatus 900 according to an embodiment of the present application. The apparatus 900 may correspond to (for example, be applicable to or be itself) the base station described in the above method 500, and each module in the apparatus 900 The OR units are respectively used to perform various actions or processing processes performed by the base station in the above method 500. As shown in FIG. 9, the communication device 900 may include a processing unit 910 and a communication unit 920.

The processing unit 910 is configured to determine a second frequency domain resource when the uplink reference signal carried by the first frequency domain resource occupies at least two time units, where the first frequency domain resource is allocated by a network device and used to carry a physical uplink. Frequency domain resources for control channels and uplink reference signals.

The communication unit 920 is configured to receive the uplink reference signal through the first frequency domain resource.

The communication unit 920 is further configured to receive the physical uplink control channel through the second frequency domain resource.

Specifically, the processing unit 910 is configured to execute S520 in the method 500, and the communication unit 920 is configured to execute S510 and S530 in the method 500. The specific process of each unit performing the foregoing corresponding steps has been described in detail in the method 500. Concise, I won't go into details here.

FIG. 10 is a schematic structural diagram of a terminal device 1000 according to an embodiment of the present application. As shown in FIG. 10, the terminal device 1000 includes a processor 1010 and a transceiver 1020. Optionally, the terminal device 1000 further includes a memory 1030. Among them, the processor 1010, the transceiver 1020, and the memory 1030 communicate with each other through an internal connection path to transfer control and / or data signals. The memory 1030 is used to store a computer program, and the processor 1010 is used to call from the memory 1030. The computer program is run to control the transceiver 1020 to send and receive signals.

The processor 1010 and the memory 1030 may be combined into a processing device. The processor 1010 is configured to execute program codes stored in the memory 1030 to implement functions of the terminal device in the foregoing method embodiment. In specific implementation, the memory 1030 may also be integrated in the processor 1010 or independent of the processor 1010. The transceiver 1020 may be implemented by means of a transceiver circuit.

The above-mentioned terminal device may further include an antenna 1040 for sending uplink data or uplink control signaling output by the transceiver 1020 through a wireless signal, or sending downlink data or downlink control signaling to the transceiver 1020 for further processing.

It should be understood that the device 1000 may correspond to the terminal device in the method 500 or the method 1400 according to the embodiment of the present application, and the device 1000 may also be a chip or a component applied to the terminal device. In addition, each module in the apparatus 1000 implements a corresponding process in the method 500 in FIG. 5. Specifically, the memory 1030 is configured to store program code, so that when the processor 1010 executes the program code, the processor 1010 controls the processor 1010 to execute S520 in the method 500, and the transceiver 1020 is used to execute S510 and S530. The specific process of each unit performing the above corresponding steps has been described in detail in the method 500, and for the sake of brevity, it is not repeated here.

FIG. 11 is a schematic structural diagram of a network device 1100 according to an embodiment of the present application. As shown in FIG. 11, the network device 1100 (for example, a base station) includes a processor 1110 and a transceiver 1120. Optionally, the network device 1100 further includes a memory 1130. The processor 1110, the transceiver 1120, and the memory 1130 communicate with each other through an internal connection path to transfer control and / or data signals. The memory 1130 is used to store a computer program, and the processor 1110 is used to call from the memory 1130. The computer program is run to control the transceiver 1120 to send and receive signals.

The processor 1110 and the memory 1130 may be combined into a processing device. The processor 1110 is configured to execute the program code stored in the memory 1130 to implement the functions of the base station in the foregoing method embodiment. In specific implementation, the memory 1130 may also be integrated in the processor 1110 or independent of the processor 1110. The transceiver 1120 may be implemented by means of a transceiver circuit.

The above network device may further include an antenna 1140, configured to send downlink data or downlink control signaling output by the transceiver 1120 through a wireless signal, or send uplink data or uplink control signaling to the transceiver 811 for further processing after receiving.

It should be understood that the device 1100 may correspond to a base station in the method 500 according to the embodiment of the present application, and the device 1100 may also be a chip or a component applied to a base station. In addition, each module in the apparatus 1100 implements a corresponding process in the method 500 in FIG. 5. Specifically, the memory 1130 is configured to store program code, so that when the processor 1110 executes the program code, the processor 1110 is used to execute S520 in method 500, and the transceiver 1120 is used to execute S510 in method 500 and S530. The specific process for each unit to execute the above corresponding steps has been described in detail in the method 500. For brevity, it will not be repeated here.

Those of ordinary skill in the art may realize that the units and algorithm steps of each example described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

The above is only a specific implementation of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A communication method, comprising:

The second frequency domain resource is determined when the uplink reference signal carried by the first frequency domain resource occupies at least two time units, wherein the first frequency domain resource is a network equipment allocated for carrying a physical uplink control channel and uplink. Frequency domain resources of reference signals;

Sending the uplink reference signal through the first frequency domain resource;

Sending the physical uplink control channel through the second frequency domain resource.
The method according to claim 1, wherein determining the second frequency domain resource when the uplink reference signal carried by the first frequency domain resource occupies at least two time units comprises:

Determining the frequency domain resource with the largest index number among the multiple frequency domain resources as the second frequency domain resource; or

The frequency domain resource with the smallest index number among the multiple frequency domain resources is determined as the second frequency domain resource.
The method according to claim 1 or 2, wherein the method further comprises:

Receiving downlink control information DCI; and

Determining the second frequency domain resource according to the DCI.
The method according to claim 3, wherein the determining the second frequency domain resource according to the DCI comprises:

Determine the second frequency domain resource according to the first indication information included in the DCI.
The method according to claim 4, wherein the determining the second frequency domain resource according to the indication information of the uplink reference signal indication domain included in the DCI comprises:

Determining the frequency domain resource indicated by the first indication information as the second frequency domain resource; or

Determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset offset relationship; or

Determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset conversion relationship.
The method according to any one of claims 1 to 5, wherein the second frequency domain resource is a channel resource for transmitting a frequency domain resource of a physical uplink shared channel, and the current frequency domain When the uplink reference signal carried by the resource occupies at least two time units, determining the second frequency domain resource includes:

Determine a third frequency domain resource from a plurality of frequency domain resources of the physical uplink shared channel, where the third frequency domain resource is a frequency domain resource allocated by a network device and used to carry a physical uplink data channel;

Determining the second frequency domain resource according to the third frequency domain resource.
A communication method, comprising:

The second frequency domain resource is determined when the uplink reference signal carried by the first frequency domain resource occupies at least two time units, wherein the first frequency domain resource is a network equipment allocated for carrying a physical uplink control channel and uplink. Frequency domain resources of reference signals;

Receiving the uplink reference signal through the first frequency domain resource;

Receiving the physical uplink control channel through the second frequency domain resource.
The method according to claim 7, wherein the determining the second frequency domain resource when the uplink reference signal carried by the first frequency domain resource occupies at least two time units comprises:

Determining the frequency domain resource with the largest index number among the multiple frequency domain resources as the second frequency domain resource; or

The frequency domain resource with the smallest index number among the multiple frequency domain resources is determined as the second frequency domain resource.
The method according to claim 7 or 8, further comprising:

Generating downlink control information DCI, where the DCI is used to indicate the second frequency domain resource;

Sending the DCI.
The method according to claim 9, wherein the DCI includes first indication information, and the first indication information is used to determine the second frequency domain resource.
The method according to claim 10, wherein:

Determining the frequency domain resource indicated by the first indication information as the second frequency domain resource; or

Determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset offset relationship; or

Determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset conversion relationship.
The method according to any one of claims 7 to 11, wherein the second frequency domain resource is a channel resource for transmitting a frequency domain resource of a physical uplink shared channel, and the current frequency domain When the uplink reference signal carried by the resource occupies at least two time units, determining the second frequency domain resource includes:

Determine a third frequency domain resource from a plurality of frequency domain resources of the physical uplink shared channel, where the third frequency domain resource is a frequency domain resource allocated by a network device and used to carry a physical uplink data channel;

Determining the second frequency domain resource according to the third frequency domain resource.
A communication device, comprising:

The processing unit is configured to determine a second frequency domain resource when the uplink reference signal carried by the first frequency domain resource occupies at least two time units, where the first frequency domain resource is a network device allocated to bear a physical Frequency domain resources of uplink control channels and uplink reference signals;

A communication unit, configured to send the uplink reference signal through the first frequency domain resource;

The communication unit is further configured to send the physical uplink control channel through the second frequency domain resource.
The apparatus according to claim 13, wherein the processing unit is further configured to:

Determining the frequency domain resource with the largest index number among the multiple frequency domain resources as the second frequency domain resource; or

The frequency domain resource with the smallest index number among the multiple frequency domain resources is determined as the second frequency domain resource.
The device according to claim 13 or 14, wherein the communication unit is further configured to:

Receiving downlink control information DCI; and

The processing unit is further configured to:

Determining the second frequency domain resource according to the DCI.
The apparatus according to claim 15, wherein the processing unit is further configured to:

Determine the second frequency domain resource according to the first indication information included in the DCI.
The apparatus according to claim 16, wherein the processing unit is further configured to:

Determining the frequency domain resource indicated by the first indication information as the second frequency domain resource; or

Determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset offset relationship; or

Determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset conversion relationship.
The apparatus according to any one of claims 13 to 17, wherein the second frequency domain resource is a channel resource used to send a frequency domain resource of a physical uplink shared channel, and the processing unit is further configured to: :

Determine a third frequency domain resource from a plurality of frequency domain resources of the physical uplink shared channel, where the third frequency domain resource is a frequency domain resource allocated by a network device and used to carry a physical uplink data channel;

Determining the second frequency domain resource according to the third frequency domain resource.
A communication device, comprising:

The processing unit is configured to determine a second frequency domain resource when the uplink reference signal carried by the first frequency domain resource occupies at least two time units, where the first frequency domain resource is a network device allocated to bear a physical Frequency domain resources of uplink control channels and uplink reference signals;

A communication unit, configured to receive the uplink reference signal through the first frequency domain resource;

The communication unit is further configured to receive the physical uplink control channel through the second frequency domain resource.
The apparatus according to claim 19, wherein the processing unit is further configured to:

Determining the frequency domain resource with the largest index number among the multiple frequency domain resources as the second frequency domain resource; or

The frequency domain resource with the smallest index number among the multiple frequency domain resources is determined as the second frequency domain resource.
The apparatus according to claim 19 or 20, wherein the processing unit is further configured to:

Generating downlink control information DCI, where the DCI is used to indicate the second frequency domain resource; and

The communication unit is further configured to:

Sending the DCI.
The apparatus according to claim 21, wherein the DCI includes first indication information, and the first indication information is used to determine the second frequency domain resource.
The apparatus according to claim 22, wherein the processing unit is further configured to:

Determining the frequency domain resource indicated by the first indication information as the second frequency domain resource; or

Determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset offset relationship; or

Determining the second frequency domain resource according to the frequency domain resource indicated by the first instruction information and a preset conversion relationship.
The apparatus according to any one of claims 19 to 23, wherein the second frequency domain resource is a channel resource used to send a frequency domain resource of a physical uplink shared channel, and the processing unit is further configured to: :

Determine a third frequency domain resource from a plurality of frequency domain resources of the physical uplink shared channel, where the third frequency domain resource is a frequency domain resource allocated by a network device and used to carry a physical uplink data channel;

Determining the second frequency domain resource according to the third frequency domain resource.
A communication device, comprising:

A processor, configured to be coupled to the memory, and execute instructions in the memory to implement the method according to any one of claims 1 to 16.
The apparatus according to claim 25, further comprising:

The memory is configured to store program instructions and data.
A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 12 is implemented.
A chip system is characterized in that the chip system includes:

Memory for storing instructions;

A processor, configured to call and execute the instructions from the memory, so that the communication device on which the chip system is installed executes the method according to any one of claims 1 to 12.