Uplink transmission resource indication method and device

Abstract

The present application provides an uplink transmission resource indication method and device, which relates to the field of communication technology and is used to solve the problem of uplink transmission resource waste in the prior art. At the same time, it can avoid the collision of downlink CSI-RS and uplink DMRS of uplink data when some nodes in a heterogeneous network receive downlink transmission of a network device and uplink transmission of a UE at the same time. The method is applied to a first network device, and includes: determining a first RS resource of a second network device in a time-frequency resource, where the RS may be a CSI-RS, the time-frequency resource includes multiple time units in the time domain, each time unit may be a time slot, the first RS resource is located in the first time unit in the time domain, and the multiple time units include the first time unit; sending first configuration information to the UE, the first configuration information is used to determine an uplink transmission resource in the time-frequency resource, where the uplink transmission resource may refer to a resource used to transmit uplink information, and the uplink transmission resource does not overlap with the first RS resource.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for indicating uplink transmission resources. Background Art

[0002] In wireless communication systems, communications can be divided into different types based on the types of transmitting and receiving nodes. Generally, information sent from a network device (e.g., a base station) to a user equipment (UE) is called downlink (DL) communication, and information sent from a UE to a network device is called uplink (UL) communication. Resources used for uplink and downlink communications can be divided into multiple radio frames in the time domain. Each radio frame can include multiple time slots, and each time slot can include multiple symbols. The ratio of uplink symbols to downlink symbols in a time slot can be called the uplink-downlink ratio of the time slot. The uplink symbol can refer to a symbol used for uplink communication, and the downlink symbol can refer to a symbol used for downlink communication. When most of the symbols in a time slot are uplink symbols, the time slot can be called an uplink time slot; when most of the symbols in a time slot are downlink symbols, the time slot can be called a downlink time slot. Network devices can implement time division multiplexing (TDD) by configuring uplink and downlink time slots on the same frequency domain resources.

[0003] Currently, in a TDD communication system that includes a macro base station, a micro base station, and a micro UE (i.e., a UE accessing the micro base station), the macro base station typically uses downlink time slots to send downlink information such as channel state information (CSI)-reference signal (RS) to the macro UE, while the micro UE typically uses uplink time slots to send uplink information such as uplink data to the micro base station. When the downlink time slot used by the macro base station and the uplink time slot used by the micro UE are the same time slot, this time slot is called a heterogeneous time slot. When the micro base station receives both the CSI-RS and the uplink data in this heterogeneous time slot, the CSI-RS may interfere with the uplink data.

[0004] In the prior art, a solution based on mini-slots has been proposed, in which the CSI-RS transmitted by the macro base station and the uplink data transmitted by the micro UE are carried on different mini-slots, and the number of symbols included in the mini-slot is smaller than the number of symbols included in a conventional time slot. For example, taking a conventional time slot including 14 symbols, represented as symbols 0 to 13, as an example, if the macro base station transmits CSI-RS on symbols 5 to 8 of the time slot, the micro UE transmits uplink data on symbols 0 to 4 and symbols 9 to 13 of the time slot, respectively. That is, symbols 0 to 4, symbols 5 to 8, and symbols 9 to 13 are each used as a mini-slot.

[0005] However, the above solution has the following disadvantages: 1. The CSI-RS usually does not occupy all the frequency domain resources on symbols 5 to 8, so there will be a problem of resource waste; 2. A demodulation reference signal (DMRS) must be sent in each mini-time slot used to send uplink data, thereby increasing and reducing the resources used to transmit uplink data; 3. The uplink data is split into multiple small data packets and transmitted in different mini-time slots. Each small data packet needs to be independently encoded, resulting in a loss of coding gain. Summary of the Invention

[0006] The present application provides an uplink transmission resource indication method and apparatus for solving the problem of uplink transmission resource waste in the prior art. In addition, the present solution can also effectively prevent some nodes in a heterogeneous network from colliding with the downlink CSI-RS and the DMRS of the uplink data when simultaneously receiving the downlink transmission of the network device and the uplink transmission of the UE.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, a method for indicating uplink transmission resources is provided, which is applied to a first network device, where the first network device may be a micro base station. The method includes: determining a first reference signal RS resource of a second network device in a time-frequency resource (for example, the RS may be a CSI-RS, the second network device may be a macro base station, and the first RS resource may refer to a resource for transmitting RS), where the time-frequency resource includes multiple time units in the time domain, each time unit may be a time slot, and the first RS resource is located in the first time unit in the time domain, where the multiple time units include the first time unit; sending first configuration information to a user device, where the first configuration information is used to determine an uplink transmission resource in the time-frequency resource, for example, the first configuration information may be used to indicate a first RS resource, or to indicate the uplink transmission resource, where the uplink transmission resource may refer to a resource for transmitting uplink information, and the uplink transmission resource does not overlap with the first RS resource.

[0009] In the above technical solution, the first network device can send first configuration information to the user device to indicate the first RS resource of the second network device or the uplink transmission resource through the first configuration information. The first RS resource or the uplink transmission resource can be based on RE granularity, so that the user device can transmit uplink information within the time slot where the RS of the second network device is located, thereby avoiding the problem of waste of uplink transmission resources.

[0010] In a possible implementation of the first aspect, the method further includes: sending second configuration information to a user equipment, the second configuration information being used to indicate a first position offset, the first position offset being a position offset of an uplink demodulation reference signal (DMRS), so that the user equipment can determine the time-domain symbol position of the uplink DMRS in the uplink transmission resource based on the second configuration information. In the above possible implementation, the first network device can indicate the first position offset value through the second configuration information, so that the user equipment can determine the time-domain symbol position of the uplink DMRS in the uplink transmission resource based on the first position offset, thereby effectively avoiding collision between the uplink DMRS and the downlink CSI-RS.

[0011] In a possible implementation of the first aspect, the time domain symbol occupied by the uplink DMRS after being offset by the first position offset is different from the time domain symbol occupied by the first RS resource. In the above possible implementation, by performing a position offset on the uplink DMRS in the time slot where the CSI-RS exists, the problem of collision between the CSI-RS and the uplink DMRS can be effectively avoided.

[0012] In a possible implementation of the first aspect, the method further includes: receiving an RS from a second network device on the first RS resource, and receiving uplink information from the user equipment on the uplink transmission resource, the uplink information including uplink data and an uplink DMRS. In the above possible implementation, interference from the uplink information of the first network device to the first network device when receiving the RS (e.g., CSI-RS) sent by the second network device can be avoided.

[0013] In a possible implementation of the first aspect, the time-frequency resource includes multiple RS resources of the second network device, and the first RS resource is a subset of the multiple RS resources. In the above possible implementation, the complexity of the first network device measuring the interference of the RS of the second network device can be reduced.

[0014] In a possible implementation of the first aspect, the first configuration information is used to indicate a first RS resource; or the first configuration information is used to indicate the uplink transmission resource. In the above possible implementation, the first network device may indicate the first RS resource or the uplink transmission resource of the second network device through the first configuration information. The first RS resource or the uplink transmission resource may be based on RE granularity, thereby improving resource utilization and avoiding resource waste.

[0015] In one possible implementation of the first aspect, the first configuration information and / or the second configuration information are carried in high-layer signaling, which can save physical layer transmission resources. Since interference measurement is typically a long-term or periodic task, dynamic scheduling of interference measurement is not required. Optionally, the high-layer signaling is RRC signaling; wherein the RRC signaling is UE-specific signaling, which can reduce the amount of transmitted data and ensure the reliability of the transmission of the first configuration information; or, the RRC signaling is cell-specific signaling, which can save transmission resources while improving the reliability of the transmission of the first configuration information.

[0016] In a second aspect, a method for indicating an uplink transmission resource is provided, which is applied to a user equipment, and the method includes: receiving first configuration information from a first network device, the first configuration information being used to determine an uplink transmission resource in a time-frequency resource, and the uplink transmission resource may refer to a resource for transmitting uplink information; determining the uplink transmission resource according to the first configuration information; wherein the uplink transmission resource does not overlap with a first reference signal RS resource of a second network device in the time-frequency resource (for example, the RS may be a CSI-RS, the second network device may be a macro base station, and the first RS resource may refer to a resource for transmitting RS), the time-frequency resource includes multiple time units in the time domain, the first RS resource is located in the first time unit in the time domain, each time unit may be a time slot, and the multiple time units include the first time unit.

[0017] In the above technical solution, the user equipment can receive the first configuration information from the first network device, and determine the first RS resource or the uplink transmission resource of the second network device through the first configuration information. The first RS resource or the uplink transmission resource can be based on RE granularity, so that the user equipment can transmit uplink information within the time slot where the RS of the second network device is located, thereby avoiding the problem of waste of uplink transmission resources.

[0018] In a possible implementation of the second aspect, the method further includes: receiving second configuration information from a first network device, the second configuration information being used to indicate a first position offset, where the first position offset is a position offset of an uplink demodulation reference signal (DMRS). In the above possible implementation, the first network device may indicate the first position offset value through the second configuration information, so that the user equipment may determine a time-domain symbol position of the uplink DMRS in the uplink transmission resource based on the first position offset, thereby effectively avoiding collision between the uplink DMRS and the downlink CSI-RS.

[0019] In a possible implementation of the second aspect, the method further includes: sending uplink information to the first network device on the uplink transmission resource, where the uplink information includes uplink data and an uplink DMRS. In the above possible implementation, interference from the uplink information to the first network device when receiving the RS of the second network device can be avoided.

[0020] In a possible implementation of the second aspect, the time domain position of the uplink DMRS within the first time unit is obtained by shifting the initial time domain position of the uplink DMRS by a first position offset, where the first position offset is the position offset of the uplink DMRS, and the time length of the first time unit does not exceed one time slot. In the above possible implementation, if the RS is a CSI-RS and the time unit is a time slot, then by performing a position offset on the uplink DMRS within the time slot where the CSI-RS exists, regardless of whether the uplink DMRS within the time slot where the CSI-RS exists collides with the CSI-RS, the overall shifting of the time domain position of the uplink DMRS can ensure that the maximum number of multiplexed users or the maximum number of multiplexed transmission layers within a time slot is the same as that of a time slot without a CSI-RS. Compared to another possible implementation described below, this implementation has a higher uplink multiplexing capability, thereby also resulting in a higher uplink throughput.

[0021] Furthermore, the time domain position of the uplink DMRS outside the first time unit is the initial time domain position of the uplink DMRS, that is, the position offset of the uplink DMRS outside the first time unit in the uplink transmission resource is 0, which is conducive to the multiplexing of UEs with different ratios and UEs with the same ratio.

[0022] In a possible implementation of the second aspect, when there is no collision between the uplink DMRS and the RS of the second network device, the time domain position of the uplink DMRS is the initial time domain position of the uplink DMRS; when there is a collision between the uplink DMRS and the RS, the time domain position of the uplink DMRS is obtained by shifting the initial time domain position of the uplink DMRS by a first position offset, and the first position offset is the position offset of the uplink DMRS. In the above possible implementation, if the RS is a CSI-RS and the time unit is a time slot, then by performing a position offset on the uplink DMRS in the time slot where the CSI-RS exists and the CSI-RS collides with the uplink DMRS, better signal estimation performance is achieved compared to performing a position offset on the entire uplink DMRS in the time slot where the CSI-RS exists; not performing a position offset on the uplink DMRS in other time slots where no collision occurs can facilitate multiplexing of UEs with different matching ratios and UEs with the same matching ratio.

[0023] In a possible implementation of the second aspect, the time domain symbol occupied by the uplink DMRS after being offset by the first position offset is different from the time domain symbol occupied by the first RS resource. In the above possible implementation, by performing a position offset on the uplink DMRS in the time slot where the CSI-RS exists, the problem of collision between the uplink DMRS and the CSI-RS can be effectively avoided.

[0024] In a possible implementation of the second aspect, the first configuration information is used to indicate the first RS resource; or the first configuration information is used to indicate the uplink transmission resource. In the above possible implementation, the first network device can indicate the first RS resource or the uplink transmission resource of the second network device through the first configuration information. The first RS resource or the uplink transmission resource can be based on RE granularity, thereby improving resource utilization and avoiding resource waste.

[0025] In a possible implementation of the second aspect, the first configuration information and / or the second configuration information are carried in high-layer signaling, which can save physical layer transmission resources. Since interference measurement is typically a long-term or periodic task, dynamic scheduling of interference measurement is not required. Optionally, the high-layer signaling is RRC signaling; wherein the RRC signaling is UE-specific signaling, which can reduce the amount of transmitted data and ensure the reliability of the transmission of the first configuration information; or, the RRC signaling is cell-specific signaling, which can save transmission resources while improving the reliability of the transmission of the first configuration information.

[0026] According to a third aspect, a communication device is provided, which serves as a first network device or a chip built into the first network device, and includes: a processing unit, used to determine a first reference signal RS resource of a second network device in a time-frequency resource, the time-frequency resource includes multiple time units in the time domain, the first RS resource is located in the first time unit in the time domain, and the multiple time units include the first time unit; a sending unit, used to send first configuration information to a user device, the first configuration information is used to determine an uplink transmission resource in the time-frequency resource, and the uplink transmission resource does not overlap with the first RS resource.

[0027] In a possible implementation manner of the third aspect, the RS is a CSI-RS; and / or the time unit is a time slot.

[0028] In a possible implementation manner of the third aspect, the sending unit is further configured to: send second configuration information to the user equipment, where the second configuration information is used to indicate a first position offset, where the first position offset is a position offset of an uplink demodulation reference signal DMRS.

[0029] In a possible implementation manner of the third aspect, a time domain symbol occupied by the uplink DMRS after being offset by the first position offset is different from a time domain symbol occupied by the first RS resource.

[0030] In a possible implementation of the third aspect, the apparatus further includes: a receiving unit configured to receive an RS from a second network device on a first RS resource, and receive uplink information from the user equipment on the uplink transmission resource, the uplink information including uplink data and uplink DMRS.

[0031] In a possible implementation manner of the third aspect, the time-frequency resources include multiple RS resources of the second network device, and the first RS resource is a subset of the multiple RS resources.

[0032] In a possible implementation manner of the third aspect, the first configuration information is used to indicate the first RS resource; or, the first configuration information is used to indicate the uplink transmission resource.

[0033] In a possible implementation manner of the third aspect, the first configuration information and / or the second configuration information is carried in high-layer signaling; optionally, the high-layer signaling is RRC signaling, for example, the RRC signaling is UE-specific signaling or cell-specific signaling.

[0034] In a fourth aspect, a communication device is provided, which serves as a user device or a chip built into the user device, and the device includes: a receiving unit, used to receive first configuration information from a first network device, the first configuration information being used to determine an uplink transmission resource in a time-frequency resource; a processing unit, used to determine the uplink transmission resource based on the first configuration information; wherein the uplink transmission resource does not overlap with a first reference signal RS resource of a second network device in the time-frequency resource, the time-frequency resource includes multiple time units in the time domain, the first RS resource is located in the first time unit in the time domain, and the multiple time units include the first time unit.

[0035] In a possible implementation manner of the fourth aspect, the RS is a CSI-RS; and / or the time unit is a time slot.

[0036] In a possible implementation manner of the fourth aspect, the receiving unit is further used to: receive second configuration information from the first network device, where the second configuration information is used to indicate a first position offset, and the first position offset is a position offset of an uplink DMRS.

[0037] In a possible implementation manner of the fourth aspect, the apparatus further includes: a sending unit, configured to send uplink information to the first network device on the uplink transmission resource, where the uplink information includes uplink data and an uplink DMRS.

[0038] In a possible implementation of the fourth aspect, the time domain position of the uplink DMRS within the first time unit is obtained by shifting the initial time domain position of the uplink DMRS by a first position offset, the first position offset is the position offset of the uplink DMRS, and the time length of the first time unit does not exceed 1 time slot.

[0039] In a possible implementation of the fourth aspect, when there is no collision between the uplink DMRS and the RS of the second network device, the time domain position of the uplink DMRS is the initial time domain position of the uplink DMRS; when there is a collision between the uplink DMRS and the RS, the time domain position of the uplink DMRS is obtained by shifting the initial time domain position of the uplink DMRS by a first position offset, and the first position offset is the position offset of the uplink DMRS.

[0040] In a possible implementation manner of the fourth aspect, a time domain symbol occupied by the uplink DMRS after being offset by the first position offset is different from a time domain symbol occupied by the first RS resource.

[0041] In a possible implementation manner of the fourth aspect, the first configuration information is used to indicate the first RS resource; or, the first configuration information is used to indicate the uplink transmission resource.

[0042] In a possible implementation manner of the fourth aspect, the first configuration information and / or the second configuration information is carried in high-layer signaling; optionally, the high-layer signaling is RRC signaling, for example, the RRC signaling is UE-specific signaling or cell-specific signaling.

[0043] In another aspect of the present application, a communication device is provided, comprising a processor and a memory coupled to the processor, wherein the processor is configured to execute instructions in the memory to cause the device to perform the method provided in the first aspect or any possible implementation of the first aspect. Optionally, the device further comprises a communication interface and a bus, wherein the processor, memory, and communication interface are coupled via the bus.

[0044] In another aspect of the present application, a communication device is provided, comprising a processor and a memory coupled to the processor, wherein the processor is configured to execute instructions in the memory to cause the device to perform the method provided in the second aspect or any possible implementation of the second aspect. Optionally, the device further comprises a communication interface and a bus, wherein the processor, memory, and communication interface are coupled via the bus.

[0045] In another aspect of the present application, an embodiment of the present application provides a communication device, which includes a processor and an interface circuit, the interface circuit being used to receive code instructions and transmit them to the processor, the processor being used to run the code instructions so that the device executes the method in the first aspect or any possible implementation of the first aspect.

[0046] In another aspect of the present application, an embodiment of the present application provides a communication device, which includes a processor and an interface circuit, the interface circuit being used to receive code instructions and transmit them to the processor, the processor being used to run the code instructions so that the device executes the method in the above-mentioned second aspect or any possible implementation of the second aspect.

[0047] In another aspect of the present application, a communication system is provided, which includes a first network device, a second network device, and a user device accessing the first network device; wherein the first network device is used to execute the method provided by the above-mentioned first aspect or any possible implementation of the first aspect; and the user device is used to execute the method provided by the above-mentioned second aspect or any possible implementation of the second aspect.

[0048] In another aspect of the present application, a computer-readable medium is provided, which stores a computer program (also referred to as code, or instructions), which, when executed on a computer, enables the computer to execute the method provided in the first aspect or any possible implementation of the first aspect.

[0049] In another aspect of the present application, a computer-readable medium is provided, which stores a computer program (also referred to as code, or instructions), which, when executed on a computer, enables the computer to execute the method provided in the above-mentioned second aspect or any possible implementation of the second aspect.

[0050] In another aspect of the present application, a computer program product is provided, which includes: a computer program (also referred to as code, or instructions), which, when executed, enables a computer to execute the method provided in the above-mentioned first aspect or any possible implementation of the first aspect.

[0051] In another aspect of the present application, a computer program product is provided, which includes: a computer program (also referred to as code, or instructions), which, when executed, enables a computer to execute the method provided in the above-mentioned second aspect or any possible implementation of the second aspect.

[0052] It can be understood that any of the communication devices, computer storage media or computer program products provided above are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 A schematic diagram of the structure of a communication system provided in an embodiment of the present application;

[0054] Figure 2 A flowchart of an uplink transmission resource indication method provided in an embodiment of the present application;

[0055] Figure 3 A schematic diagram of a CSI-RS in a PRB provided in an embodiment of the present application;

[0056] Figure 4 A flowchart of another uplink transmission resource indication method provided in an embodiment of the present application;

[0057] Figure 5 A schematic diagram of an uplink DMRS in a PRB provided in an embodiment of the present application;

[0058] Figure 6 A schematic diagram of another uplink DMRS in a PRB provided in an embodiment of the present application;

[0059] Figure 7 A schematic diagram of CSI-RS and DMRS in a PRB provided in an embodiment of the present application;

[0060] Figure 8A schematic diagram of the structure of a first network device provided in an embodiment of the present application;

[0061] Figure 9 A schematic diagram of the structure of another first network device provided in an embodiment of the present application;

[0062] Figure 10 A schematic diagram of the structure of a UE provided in an embodiment of the present application;

[0063] Figure 11 A structural diagram of another UE provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] In the present application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in the embodiments of the present application, words such as "first" and "second" do not limit the quantity and execution order.

[0065] It should be noted that, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0066] The technical solution of the present application can be applied to various communication systems, such as LTE time division duplex (TDD) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, public land mobile network (PLMN) system, long time evolution (LTE) system, new radio (NR) system, 45G communication system, 5G communication system, and various future wireless communication systems. The technical solution of the present application can include multiple application scenarios, such as machine to machine (M2M), device to machine (D2M), device to device (D2D), macro and micro communication, enhanced mobile broadband (eMBB), ultra reliable and low latency communication (ultra reliable & low latency communication, uRLLC) and massive machine type communication (mMTC).

[0067] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field will know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0068] Figure 1A structural diagram of a communication system provided in an embodiment of the present application, the communication system includes: a first network device 10, a second network device 20 and a user device 30, and the first network device 10 can communicate with the second network device 20 and the user device 30. Among them, the first network device 10 can be a network device located within the service range of the second network device 20, and the first network device 10 can receive information sent by the second network device 20 to the user device connected to the second network device 20. For example, the information may include a reference signal (RS) sent by the second network device 20. In one embodiment, the baseband processors of the first network device 10 and the second network device 20 are on the same circuit board, or on different circuit boards, and the first network device 10 and the second network device 20 exchange information through an X2 interface or an air interface. The user device 30 can be a user device accessing the first network device 10. The first network device 10 can send information to the user device 30, and the user device 30 can send information to the first network device 10. For example, the first network device can send configuration information or scheduling information to the user device 30, and the user device 30 can send data to the first network device 10.

[0069] The user equipment 30 may be a device with wireless communication capabilities that can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted. It may also be deployed on water (such as a ship, etc.). It may also be deployed in the air (for example, on an airplane, balloon, or satellite). User equipment (UE), also known as a terminal, mobile station (MS), mobile terminal (MT), or terminal device, is a device that provides voice and / or data connectivity to a user. For example, the user equipment 30 includes a handheld device with wireless connection capabilities, a vehicle-mounted device, etc. Currently, the user device 30 can be: a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device (such as a smart watch, a smart bracelet, a pedometer, etc.), an in-vehicle device (such as a car, a bicycle, an electric car, an airplane, a ship, a train, a high-speed train, etc.), a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a smart home device (such as a refrigerator, a television, an air conditioner, an electric meter, etc.), an intelligent robot, a workshop device, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, or a wireless terminal in a smart home, a flying device (such as an intelligent robot, a hot air balloon, a drone, an airplane), etc. In one possible application scenario of this application, the terminal is a terminal device that often works on the ground, such as an in-vehicle device. In this application, for the sake of convenience, the chip deployed in the above-mentioned device, such as the system-on-a-chip (SOC), baseband chip, etc., or other chips with communication functions can also be referred to as user equipment.

[0070] As an example, in an embodiment of the present application, the user device 30 may also include a wearable device. Wearable devices can also be called wearable smart devices, which are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0071] In addition, the first network device 10 and the second network device 20 can both be referred to as network devices, and the network device can be an entity that can be used in conjunction with a user device to transmit or receive signals, and the network device can also be referred to as an access network device. For example, the network device can be an access point (AP) in a WLAN, or an evolved Node B (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device in a future 5G network or an access network device in a future evolved PLMN network, etc. In an embodiment of the present application, the network device can provide services for a cell, and the user device can communicate with the network device through the transmission resources used by the cell (for example, time domain resources, or frequency domain resources, or time-frequency resources). The cell may be a cell corresponding to an access network device (e.g., a base station). The cell may belong to a macro base station or a base station corresponding to a small cell. Small cells may include metro cells, micro cells, pico cells, and femto cells. These small cells have small coverage and low transmission power and are suitable for providing high-speed data transmission services. In one possible embodiment, the first network device 10 may be a micro base station, and the second network device 20 may be a macro base station.

[0072] The following is an introduction to the terms involved in the embodiments of this application:

[0073] In a wireless communication system, communications can be divided into different types according to the types of sending nodes and receiving nodes. Generally, the transmission of information from a network device (such as a base station) to a UE is called downlink (DL) communication, and the transmission of information from a UE to a network device is called uplink (UL) communication. The time-frequency resources used for uplink and downlink communications can be divided into multiple radio frames in the time domain, each radio frame can include multiple time slots (TS), each time slot can include multiple symbols, and in the frequency domain, multiple physical resource blocks (PRBs), each PRB can include multiple subcarriers. Taking the NR system as an example, the length of a radio frame is 10ms. If the length of a time slot is 0.5ms, then a radio frame can include 20 time slots, and a time slot can include 14 symbols, which can be orthogonal frequency division multiplexing (OFDM) symbols. The transmission direction of an OFDM symbol in a time slot can be DL, UL, or flexible, and the combination of transmission directions of the symbols in a time slot can be understood as the format of the time slot. For example, the TS 38.211 standard for the NR system shows several time slot formats as shown in Table 1 below.

[0074] Table 1

[0075]

[0076]

[0077] In Table 1 above, D stands for DL, U stands for UL, and X stands for flexible. Taking format 27 as an example, the time slot format represented by format 27 is as follows: the first three symbols are used for DL ​​transmission, the last three symbols are used for UL transmission, and the middle eight symbols are flexible, meaning that these eight symbols can be used for uplink transmission, downlink transmission, or not used for transmission.

[0078] The ratio of uplink symbols to downlink symbols in a time slot can be called the uplink and downlink ratio of the time slot. The uplink symbol can refer to the symbol used for uplink communication, and the downlink symbol can refer to the symbol used for downlink communication. When most of the symbols in a time slot are uplink symbols, the time slot can be called an uplink time slot; when most of the symbols in a time slot are downlink symbols, the time slot can be called a downlink time slot. Network equipment can implement time division multiplexing (TDD) by configuring uplink time slots and downlink time slots on the same frequency domain resources. Specifically, network equipment can implement TDD by alternately configuring uplink time slots and downlink time slots on the same carrier. The ratio of time domain uplink and downlink time slots to uplink time slots is called the TDD uplink and downlink ratio. For example, 8:2 is a very common ratio scheme, that is, every 10 time slots contain 8 consecutive downlink time slots, followed by 2 consecutive uplink time slots.

[0079] A time slot with different ratios may refer to a time slot with different uplink and downlink ratios for two network devices (a first network device serving as a micro base station and a second network device serving as a macro base station). For example, the macro base station uses an uplink and downlink ratio with more downlink symbols than uplink symbols (for example, the time slot format is DSUDD, where S stands for special frames), while the micro base station uses an uplink and downlink ratio with more uplink symbols than downlink symbols (for example, the time slot format is USUUU). This results in the time slot being a downlink time slot for the macro base station but an uplink time slot for the micro base station.

[0080] A heterogeneous UE may refer to a UE whose uplink and downlink configurations differ from the macro network configuration, i.e., the uplink and downlink ratio of the UE for a timeslot is inconsistent with that of the macro station. For example, a timeslot is a downlink timeslot for the macro station, but an uplink timeslot for the UE. A homogeneous UE may refer to a UE whose uplink and downlink configurations are identical to those of the macro network configuration, i.e., the uplink and downlink ratio of the UE for a timeslot is consistent with that of the macro station. For example, a timeslot is a downlink timeslot for the macro station, but an uplink timeslot for the UE. Alternatively, a heterogeneous UE may also be understood as one in which the UE's physical uplink shared channel (PUSCH) may collide with the macro station's reference signal (e.g., channel state information (CSI)-reference signal (RS)). A homogeneous UE may also be understood as one in which the UE's PUSCH does not collide with the macro station's reference signal (e.g., CSI-RS).

[0081] In this article, collision may refer to two transmitting ends sending signals on the same time-frequency resources, resulting in the receiving end being unable to separate the two signals from the received signals. For example, the macro base station and the UE accessing the micro base station (i.e., micro UE) respectively send CSI-RS and uplink information on the same time-frequency resources. The micro base station cannot separate the CSI-RS and the uplink information received on the time-frequency resources.

[0082] Figure 2 A flow chart of an uplink transmission resource indication method provided in an embodiment of the present application, which can be applied to Figure 1 In the communication system shown, the method includes the following steps.

[0083] S201: A first network device determines a first RS resource of a second network device in a time-frequency resource, where the time-frequency resource includes multiple time units in the time domain. The first RS resource is located in a first time unit in the time domain, and the multiple time units include the first time unit.

[0084] The time-frequency resource may be a resource used for communication between the first network device and the user equipment, and the time-frequency resource may include a time domain resource and a frequency domain resource. The time-frequency resource includes multiple time units in the frequency domain, and one time unit may be a time slot. The first RS resource may refer to a resource used to transmit RS, the first RS resource is part of the time-frequency resource, the first RS resource is located in the first time unit in the time domain (for example, the first RS resource includes part of the symbols in the first time unit in the time domain), the first time unit may include one time slot or multiple time slots, and these multiple time units include the first time unit. The RS may be a CS-RS, so that the first RS resource is the first CSI-RS resource.

[0085] In addition, the first network device may be located within the service range of the second network device, and the number of the second network devices may be one or more. The first network device being located within the service range of the second network device may also be referred to as the first network device being adjacent to the second network device, and thus the first network device may be adjacent to one or more second network devices.

[0086] Furthermore, when the number of second network devices is one, the first RS resources of the second network device in S201 may include the RS resources of this one second network device; when the number of second network devices is multiple, the first RS resources of the second network device in S201 may include the RS resources of these multiple second network devices. The first RS resources of a second network device may be part of all RS resources of the second network device (i.e., the first RS resources are a subset of all RS resources), or may include all RS resources of the second network device. When the first RS resources are part of all RS resources, when the first network device subsequently detects the RS (e.g., CSI-RS) of the second network device on the first RS resources to perform interference measurement, the complexity of the measurement can be reduced.

[0087] Specifically, the first network device can determine the surrounding second network device according to the network planning, and exchange information with the second network device through the X2 interface or the air interface to obtain the first RS resource of the second network device. For example, the first network device obtains the CSI-RS configuration of the second network device through the X2 interface or the air interface with a period of 10ms (one radio frame), sends the CSI-RS in the third time slot of each radio frame, and uses the resource Ψ = {frequency domain: PRB0, PRB2, PRB4, ..., PRB199, subcarrier 0 to subcarrier 7 in each PRB; time domain: the third time slot in each radio frame, symbol 5, symbol 6, symbol 9 and symbol 10 in each PRB}, after which the first network device can determine the resource Ψ as the first CSI-RS resource. Figure 3 In the figure, a PRB in the third time slot is taken as an example to show the CSI-RS resources on the PRB. Figure 3 In the example, each PRB includes 12 subcarriers and each time slot includes 14 symbols.

[0088] Optionally, the first network device may also obtain the uplink and downlink ratio of the second network device through the X2 interface or air interface, and determine the heterogeneous ratio time slot and the heterogeneous ratio UE accessing the first network device based on the uplink and downlink ratio of the second network device and its own uplink and downlink ratio.

[0089] S202: The first network device sends first configuration information to the UE, where the first configuration information is used to determine an uplink transmission resource in the time-frequency resource, where the uplink transmission resource does not overlap with the first RS resource.

[0090] The user equipment may be a user equipment accessing the first network device. The uplink transmission resource refers to a resource used by the user equipment to transmit uplink information, and the uplink information may include uplink data and an uplink demodulation reference signal (DMRS).

[0091] In one embodiment, the first configuration information can be used to indicate the first RS resource, so that the uplink transmission resource can be a resource in the time-frequency resource excluding the first RS resource. For example, the RS is a CSI-RS, and the first configuration information is used to indicate the CSI-RS pattern. The first configuration information may include information such as the configuration period of the CSI-RS, the PRB occupied by the CSI-RS, and the RE position occupied by the CSI-RS in the PRB. In another embodiment, the first configuration information is used to directly indicate the uplink transmission resource. For example, the first configuration information is used to indicate the PUSCH pattern, that is, the first configuration information may include information such as the PRB occupied by the uplink information and the RE position occupied by the uplink information in the PRB.

[0092] Optionally, the first network device may send first configuration information to the heterogeneous UE through high-layer signaling, and the first configuration information is used to determine the uplink transmission resources in the time-frequency resources. The heterogeneous UE here may refer to a UE whose uplink and downlink configurations are different from those of the macro network, that is, the uplink and downlink configurations of the UE are different from those of the second network device. By sending the first configuration information to the heterogeneous UE through high-layer signaling, physical layer transmission resources can be saved. Since interference measurement is usually a long-term or periodic task, there is no need to dynamically schedule interference measurement. In addition, even if the second network device dynamically schedules CSI-RS, the first network device can treat it as accidental interference and do not process it.

[0093] Among them, the high-level signaling can be radio resource control (RRC) signaling or other high-level signaling. Optionally, the RRC signaling can be UE-specific signaling or cell-specific signaling. When the RRC signaling is UE-specific signaling, the amount of transmitted data can be reduced to ensure the reliability of the transmission of the first configuration information. When the RRC signaling is cell-specific signaling, transmission resources can be saved while improving the reliability of the transmission of the first configuration information. The following describes in detail the implementation methods when the RRC signaling is UE-specific signaling or cell-specific signaling.

[0094] UE-specific signaling: The first network device sends first configuration information to all heterogeneous UEs accessing the first network device through UE-specific signaling, that is, for each heterogeneous UE among all heterogeneous UEs, the first network device can send the first configuration information to the heterogeneous UE through a UE-specific signaling. Specifically, for any heterogeneous UE, the first network device can determine the CSI-RS pattern within the bandwidth or partial bandwidth of the UE based on the CSI-RS pattern, the position of the UE's uplink time slot, and the bandwidth or partial bandwidth of the UE, thereby performing RRC signaling notification on the UE through UE-specific signaling. Exemplarily, the UEs accessing the first network device include UE1 to UE3, and UE1 and UE2 are heterogeneous UEs. The first network device sends a UE-specific signaling to UE1 and also sends a UE-specific signaling to UE2. The UE characteristic signaling includes first configuration information, and the first configuration information is used to indicate a first CSI-RS resource. For example, the first CSI-RS resource is Ψ1 = {frequency domain: PRB0, PRB2, PRB4, ..., PRB98, subcarrier 0 to subcarrier 7 in each PRB; time domain: the third time slot in each radio frame, symbol 5, symbol 6, symbol 9 and symbol 10 in each PRB}.

[0095] Cell-specific signaling: The first network device sends first configuration information to all UEs connected to the first network device through cell-specific signaling, that is, the first network device sends the same RRC signaling to all UEs connected to the first network device. Specifically, the first network device can broadcast the CSI-RS pattern to each UE connected to the first network device. Each UE can determine whether to read the cell-specific signaling based on its own uplink and downlink ratio. If the UE is a heterogeneous ratio UE, the UE reads the cell-specific signaling. If the UE is a homogeneous ratio UE, the UE does not read the cell-specific signaling. For example, the UEs accessing the first network device include UE1 to UE3, and UE1 and UE2 are heterogeneous UEs. The first network device sends cell-specific signaling to UE1 to UE3 through a broadcast channel, and UE1 and UE2 read the received cell-specific signaling, thereby determining a CSI-RS resource as Ψ1 = {frequency domain: PRB0, PRB2, PRB4, ..., PRB98, subcarrier 0 to subcarrier 7 in each PRB; time domain: the third time slot in each radio frame, symbol 5, symbol 6, symbol 9 and symbol 10 in each PRB}. UE3 does not read the first configuration information when receiving the cell-specific signaling.

[0096] Of course, in actual applications, the first network device may also send the first configuration information to the heterogeneous UE through physical layer signaling, and the embodiment of the present application does not impose any specific restrictions on this.

[0097] S203: The UE receives the first configuration information. It should be noted that the description of the first configuration information is consistent with the description of the first configuration information in S202 above. For details, please refer to the description in S202, which will not be repeated in this embodiment of the present application.

[0098] S204: The UE determines the uplink transmission resource according to the first configuration information.

[0099] In which, the uplink transmission resource can be part of the time-frequency resource, so that the uplink transmission resource can also include multiple time units in the time domain, each time unit can be a time slot or multiple symbols, and can include multiple PRBs in the frequency domain, each PRB can include multiple subcarriers.

[0100] Specifically, when the first configuration information is used to indicate the first RS resource, the UE can determine the first RS resource based on the first configuration information, and the first RS resource can be indicated with a resource element (RE) as the granularity. For example, the first configuration information can be used to indicate the time domain symbol and frequency domain subcarrier occupied by the first RS resource. Furthermore, the first network device can also send indication information for indicating the uplink transmission PRB to the UE, that is, the indication information indicates the PRB resource used for uplink transmission with a PRB as the granularity. The indication information can be carried in high-layer signaling or physical layer signaling, and the embodiment of the present application does not impose specific restrictions on this; when the first network device receives the indication information, the first network device can determine the RE in the uplink transmission PRB excluding the RE occupied by the first RS resource as the uplink transmission resource.

[0101] Alternatively, when the first configuration information is used to indicate the uplink transmission resource, the uplink transmission resource can be indicated with RE as the granularity. For example, the first configuration information is used to indicate the PRB occupied by the uplink transmission resource, and the time domain symbols and frequency domain subcarriers occupied in each PRB, so that the UE can directly determine the uplink transmission resource based on the first configuration information.

[0102] For further information, see Figure 4 The method further includes: S205-S206. S205-S206 and S203-S204 may be performed in any order. Figure 4 Here, the example of S205-S206 being located after S203-S204 is used for explanation.

[0103] S205: The first network device sends second configuration information to the UE, where the second configuration information is used to indicate a first position offset, and the first position offset is a position offset of an uplink DMRS.

[0104] The first position offset may include a position offset of the uplink DMRS, and this position offset may be used to offset the positions of multiple uplink DMRSs within a time unit, that is, to offset the initial time domain position of the uplink DMRS within a time unit by the first position offset. Figure 5 As shown, the first position offset is {+2}, and the initial time domain position of the uplink DMRS in a PRB within a time unit is symbol 0, symbol 1, symbol 9 and symbol 10. Then, the initial time domain position of the uplink DMRS in the PRB within the time unit can be shifted backward by 2 symbols to symbol 2, symbol 3, symbol 11 and symbol 12 respectively. Figure 5 (a) shows the initial time domain position of the uplink DMRS. Figure 5 (b) shows the time domain position of the uplink DMRS after the first position offset. Figure 5 In the example, the uplink DMRS occupies subcarrier 0-subcarrier 1 and subcarrier 6-subcarrier 7 in the frequency domain.

[0105] Or, as Figure 6 As shown, the first position offset includes multiple position offsets of the uplink DMRS, each position offset corresponds to one uplink DMRS or multiple uplink DMRSs, and the multiple position offsets can be used to respectively perform position offsets on multiple uplink DMRSs within a time unit, that is, the initial time domain positions of multiple uplink DMRSs within a time unit are respectively offset by different position offsets; for example, the first position offset is {0, +2}, and the initial time domain positions of the uplink DMRS in a PRB within a time unit are symbol 0, symbol 1, symbol 9, and symbol 10, then symbol 0 and symbol 1 in the initial time domain position of the uplink DMRS in the PRB within the time unit can be not position offset (that is, offset by 0 symbol), and symbol 9 and symbol 10 in the initial time domain position of the uplink DMRS in the PRB within the time unit are respectively offset backward by 2 symbols to obtain symbol 11 and symbol 12, Figure 6 (a) in FIG. 1 shows the initial time domain position of the uplink DMRS. Figure 6 (b) in FIG. 1 shows the time domain position of the uplink DMRS after the uplink DMRS is offset by the first position offset. Here, an uplink DMRS may refer to an uplink DMRS on one symbol. Figure 6 In the example, the uplink DMRS occupies subcarrier 0-subcarrier 1 and subcarrier 6-subcarrier 7 in the frequency domain.

[0106] In one embodiment, the first position offset may be effective only in time slots where a CSI-RS exists, and not in time slots where a CSI-RS does not exist. That is, the position offset is applied only to the uplink DMRS in time slots where a CSI-RS exists, and the time domain position of the uplink DMRS after the offset does not overlap with the CSI-RS. In this case, whether the uplink DMRS in the time slot where a CSI-RS exists collides with the CSI-RS can be ignored. By applying a position offset to the uplink DMRS in time slots where a CSI-RS exists, regardless of whether the uplink DMRS in the time slot where a CSI-RS exists collides with the CSI-RS, the overall time domain position of the uplink DMRS is shifted, thereby ensuring that the maximum number of multiplexed users or the maximum number of multiplexed transmission layers in a time slot is the same as in a time slot without a CSI-RS. Compared to another embodiment described below, this approach has a higher uplink multiplexing capability, resulting in a higher uplink throughput. Furthermore, the time domain position of the uplink DMRS outside the first time unit is the initial time domain position of the uplink DMRS, that is, the position offset of the uplink DMRS outside the first time unit in the uplink transmission resource is 0, which is conducive to the multiplexing of UEs with different ratios and UEs with the same ratio.

[0107] For example, the uplink transmission resource includes 10 time slots and is represented as time slot 0 to time slot 9. There is a CSI-RS on time slot 2 of these 10 time slots and the CSI-RS is located on an even-numbered PRB. If the first position offset is {+2}, the initial time slot symbol position of the uplink DMRS is symbol 0, symbol 1, symbol 9, and symbol 10, then the initial symbol position of the uplink DMRS on the even-numbered PRB in time slot 3 can be shifted backward by 2 symbols to symbol 2, symbol 3, symbol 11, and symbol 12 respectively. The uplink DMRS from time slot 0 to time slot 1 and from time slot 3 to time slot 9 maintains the initial symbol position, that is, the time domain position of the uplink DMRS from time slot 0 to time slot 1 and from time slot 3 to time slot 9 is symbol 0, symbol 1, symbol 9, and symbol 10. At this time, if the time domain symbol and frequency domain subcarrier occupied by the CSI-RS on the even PRB are the same as the time domain symbol and frequency domain subcarrier occupied by the uplink DMRS when it is in the initial time domain position, then the uplink DMRS collides with the CSI-RS; if the time domain symbol occupied by the CSI-RS on the even PRB is different from the time domain symbol occupied by the uplink DMRS when it is in the initial time domain position, or the time domain symbol occupied by the CSI-RS on the even PRB is the same as the time domain symbol occupied by the uplink DMRS when it is in the initial time domain position but the occupied frequency domain subcarriers are different, then the uplink DMRS does not collide with the CSI-RS. Figure 7This is a schematic diagram of a PRB for the CSI-RS in time slot 2. If the CSI-RS occupies symbols 0 and 1 in the PRB and subcarriers 4 and 5 in the frequency domain, when the uplink DMRS on the PRB occupies symbols 0, 1, 9, and 10 at the initial time domain position and subcarriers 0 and 1 in the frequency domain, the uplink DMRS does not collide with the CSI-RS. In this case, the DMRS on the PRB can also be offset backward by the first position offset.

[0108] In another embodiment, the first position offset may be effective only in a time slot in which a CSI-RS exists and the uplink DMRS collides with the CSI-RS. In this case, whether the DMRS in the time slot in which the CSI-RS exists collides with the CSI-RS is considered. If the uplink DMRS collides with the CSI-RS, the uplink DMRS in the time slot is position offset, and the time domain position of the offset DMRS does not overlap with the CSI-RS. If the uplink DMRS does not collide with the CSI-RS, the uplink DMRS in the time slot is not position offset. The collision between the uplink DMRS and the CSI-RS may mean that the uplink DMRS and the CSI-RS occupy the same RE of the same symbol on the same PRB. By offsetting the position of the uplink DMRS in the time slot where the CSI-RS exists and the DMRS collides with the CSI-RS, better signal estimation performance is achieved compared to offsetting the position of the entire uplink DMRS in the time slot where the CSI-RS exists. Not offsetting the position of the uplink DMRS in other time slots where no collision occurs can facilitate the multiplexing of UEs with different ratios and UEs with the same ratio.

[0109] In another embodiment, the first position offset is effective in each time slot of the multiple time slots included in the uplink transmission resource. At this time, the uplink DMRS in the time slot where the CSI-RS exists is position offset, and the uplink DMRS in the time slot where the CSI-RS does not exist is also position offset.

[0110] Specifically, the first network device may determine a first position offset based on the uplink transmission resource and the initial time domain position of the uplink DMRS, and send the first configuration information to the UE through high-layer signaling or physical layer signaling. The high-layer signaling may be RRC signaling, and the RRC signaling may be UE-specific signaling or cell-specific signaling. The description of the first network device sending the second configuration information to the UE through the UE-specific signaling or cell-specific signaling is similar to the description of the first network device sending the first configuration information to the UE through the UE-specific signaling or cell-specific signaling in S202 above. For details, refer to the description in S202, and this embodiment of the present application will not be repeated here.

[0111] Of course, in actual applications, the above-mentioned first position offset and the time slot in which the first position offset takes effect may also be predefined, or the uplink DMRS offset rule and the effective time slot may be predefined for the first network device and the UE. For example, the offset rule may be a backward offset to a collision-free symbol, or a forward offset to a collision-free symbol, so that the first network device and the UE can perform corresponding operations according to the predefined first position offset or the predefined uplink DMRS offset rule.

[0112] It should be noted that when the symbol position obtained after position shifting of the uplink DMRS in a time slot exceeds the symbol positions included in a time slot, the time domain position of the uplink DMRS may be moved to other symbol positions where no collision occurs.

[0113] S206: The UE receives the second configuration information. It should be noted that the description of the second configuration information in S206 and the description of the UE determining the uplink DMRS in the uplink transmission resource according to the second configuration information can be specifically referred to the description in S205, and will not be repeated in this embodiment of the present application.

[0114] For further information, see Figure 4 , the method also includes: S207-S208.

[0115] S207: The UE sends uplink information to the first network device on the uplink transmission resource, where the uplink information includes uplink data and uplink DMRS.

[0116] Specifically, the UE may send uplink data and an uplink DMRS for demodulating the uplink data to the first network device on the uplink transmission resource. The time domain position of the uplink DMRS in the uplink transmission resource may be determined by the UE according to the second configuration information or a predefined uplink DMRS offset rule. For a description of specifically determining the time domain position of the uplink DMRS in the uplink transmission resource, please refer to the relevant description in 205 above, and the embodiments of the present application will not be repeated here.

[0117] Furthermore, before the UE sends the uplink information to the first network device, the first network device may also send scheduling information to the UE, where the scheduling information is used to schedule the uplink information on the time-frequency resource, so that when the UE receives the scheduling information, the UE can send the uplink information to the first network device on the uplink transmission resource.

[0118] S208: The first network device receives the RS from the second network device on the first RS resource, and receives uplink information from the user equipment on the uplink transmission resource.

[0119] In which, when the UE sends uplink information to the first network device on the uplink transmission resource, the second network device can also send RS to the first network device on the first RS resource. For example, the RS is CSI-RS, so that the first network device can receive RS from the second network device on the first RS resource in the time-frequency resource, receive uplink information from the user equipment on the uplink transmission resource in the time-frequency resource, and perform interference measurement based on the received CSI-RS.

[0120] In an embodiment of the present application, the first network device can send first configuration information to the UE to indicate the first RS resource of the second network device or the uplink transmission resource of the UE through the first configuration information. The first RS resource or the uplink transmission resource can be based on RE granularity, so that the UE can transmit uplink information in the time slot where the RS of the second network device is located, thereby avoiding the problem of resource waste; in addition, by offsetting the position of the uplink DMRS in the time slot where the CSI-RS exists, the problem of collision between the uplink DMRS and the downlink CSI-RS can be effectively avoided.

[0121] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the interaction between the first network device, the UE, and the second network device. It can be understood that, in order to implement the above functions, the first network device, the UE, and the second network device include hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the network elements and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel 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.

[0122] In the embodiment of the present application, the first network device and the UE can be divided into functional modules according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0123] In the case of an integrated unit, Figure 8A possible structural diagram of a communication device involved in an embodiment of the present application is shown. The device can be used as a first network device or a chip built into the first network device. The device includes: a processing unit 301 and a sending unit 302. Further, the device also includes: a receiving unit 303.

[0124] In one possible implementation, the processing unit 301 is configured to support the apparatus in executing S201 of the aforementioned method embodiment and / or other technical processes described herein; the sending unit 302 is configured to support the apparatus in executing S202 of the aforementioned method embodiment; further, the sending unit 302 is configured to support the apparatus in executing S205 of the aforementioned method embodiment, and the receiving unit 303 is configured to support the apparatus in executing S208 of the aforementioned method embodiment. It should be noted that all relevant content of each step involved in the aforementioned method embodiment can be referenced in the functional description of the corresponding functional module and will not be repeated here.

[0125] Based on the hardware implementation, the processing unit 301 in the embodiment of the present application can be the processor of the device, the sending unit 302 can be the transmitter of the device, and the receiving unit 303 can be the receiver of the device. The transmitter can usually be integrated with the receiver to be used as a transceiver. The specific transceiver can also be called a communication interface or interface circuit.

[0126] like Figure 9 , which is a schematic diagram of a possible structure of a communication device involved in the above-mentioned embodiments provided in the embodiments of the present application. The device can be a first network device or a chip built into the first network device. The device includes: a processor 312 and a communication interface 313. Furthermore, the device may also include: a memory 311 and a bus 314, and the processor 312, memory 311, and communication interface 313 are connected via the bus 314.

[0127] The processor 312 is configured to control and manage the actions of the device. In one possible implementation, the processor 312 may be configured to support the device in executing step S201 of the aforementioned method embodiment and / or other technical processes described herein. The communication interface 313 is configured to support communication with the device, for example, supporting communication with a second network device and a UE. The memory 311 is configured to store program code and data for the device.

[0128] In the present application, the processor 312 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. Figure 9 The bus 314 in the figure can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the above Figure 9 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0129] In the case of an integrated unit, Figure 10 A possible structural diagram of a communication device involved in an embodiment of the present application is shown, which can be used as a UE or a chip built into the UE. The device includes: a receiving unit 401 and a processing unit 402. Further, the device also includes: a sending unit 403.

[0130] In one possible implementation, receiving unit 401 is configured to support the apparatus in executing S203 of the aforementioned method embodiment; processing unit 402 is configured to support the apparatus in executing S204 of the aforementioned method embodiment, and / or other technical process sending units described herein; further, receiving unit 401 is configured to support the apparatus in executing S206 of the aforementioned method embodiment; and sending unit 403 is configured to support the apparatus in executing S207 of the aforementioned method embodiment. It should be noted that all relevant content of each step involved in the aforementioned method embodiment can be referenced in the functional description of the corresponding functional module and will not be repeated here.

[0131] Based on the hardware implementation, the processing unit 402 in the embodiment of the present application can be the processor of the device, the receiving unit 401 can be the receiver of the device, and the sending unit 403 can be the transmitter of the device. The transmitter can usually be integrated with the receiver to be used as a transceiver. The specific transceiver can also be called a communication interface or interface circuit.

[0132] like Figure 11The figure shows a possible structural diagram of a communication device involved in the above-mentioned embodiments provided in the embodiments of the present application. The device can be used as a UE or a chip built into the UE. The device includes: a processor 412 and a communication interface 413; further, the device may also include: a memory 413 and a bus 414, and the processor 412, memory 411, and communication interface 413 are connected via the bus 414.

[0133] Processor 412 is used to control and manage the actions of the device. In one possible implementation, processor 412 can be used to support the device in executing S204 of the above-described method embodiment and / or other technical processes described herein. Communication interface 413 is used to support communication with the device, for example, supporting communication between the device and the first network device; memory 411 is used to store program code and data of the device.

[0134] In the present application, the processor 412 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. Figure 11 The bus 414 in the embodiment may be a Peripheral Component Interconnect (PCI) bus or an Extended Industrial Standard Architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the above Figure 11 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0135] Based on this, an embodiment of the present application further provides a communication system, which includes a first network device, a second network device and a UE; wherein the first network device is the above-mentioned Figure 8 or Figure 9 The communication device provided is used to execute the steps of the first network device in the above method embodiment; the UE is the above Figure 10 or Figure 11 The provided communication device is used to execute the UE steps in the above method embodiment.

[0136] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical functional division. In actual implementation, other division methods may be used, such as combining or integrating multiple units or components into another device, or ignoring or not implementing certain features.

[0137] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0138] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0139] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. The readable storage medium may include: a USB flash drive, a mobile hard drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk, etc., which can store program code. Based on this understanding, the technical solution of the embodiment of the present application, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product.

[0140] In another aspect of the present application, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium. When the instructions are executed on a device, the device executes the steps of the first network device in the above method embodiment.

[0141] In another aspect of the present application, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium. When the instructions are executed on a device, the device executes the steps of the UE in the above method embodiment.

[0142] In another aspect of the present application, a computer program product is provided. When the computer program product is run on a device, the device is caused to execute the steps of the first network device in the above method embodiment.

[0143] In yet another aspect of the present application, a computer program product is provided. When the computer program product is run on a device, the device is enabled to perform the steps of the UE in the above method embodiment.

[0144] Finally, it should be noted that the above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for indicating uplink transmission resources, characterized in that: The method comprises: Determine a channel state information-reference signal CSI-RS resource of a second network device in a time-frequency resource, where the time-frequency resource includes multiple time slots in the time domain, the CSI-RS resource is located in a first time slot in the time domain, and the multiple time slots include the first time slot; Sending first configuration information to a user equipment, where the first configuration information is used to determine an uplink transmission resource in the time-frequency resource, where the uplink transmission resource does not overlap with the CSI-RS resource; Second configuration information is sent to the user equipment, where the second configuration information is used to indicate a first position offset, where the first position offset is a position offset of an uplink demodulation reference signal (DMRS), and the first position offset is valid only in the first time slot.

2. The method according to claim 1, characterized in that The time domain symbols occupied by the uplink DMRS after being offset by the first position offset are different from the time domain symbols occupied by the CSI-RS resources.

3. The method according to claim 1 or 2, characterized in that The method further comprises: An RS is received from the second network device on the CSI-RS resource, and uplink information is received from the user equipment on the uplink transmission resource, where the uplink information includes uplink data and uplink DMRS.

4. The method according to claim 1 or 2, characterized in that The time-frequency resources include multiple RS resources of the second network device, and the CSI-RS resources are a subset of the multiple RS resources.

5. The method according to claim 1 or 2, characterized in that The first configuration information is used to indicate the CSI-RS resource; or, The first configuration information is used to indicate the uplink transmission resource.

6. The method according to claim 1 or 2, characterized in that The method is executed by the first network device or a chip in the first network device.

7. A method for indicating uplink transmission resources, characterized in that: The method comprises: receiving first configuration information from a first network device, where the first configuration information is used to determine an uplink transmission resource in a time-frequency resource; Determining the uplink transmission resource according to the first configuration information; wherein the uplink transmission resource does not overlap with a channel state information-reference signal CSI-RS resource of the second network device in the time-frequency resource, the time-frequency resource includes multiple time slots in the time domain, the CSI-RS resource is located in a first time slot in the time domain, and the multiple time slots include the first time slot; Second configuration information is received from the first network device, where the second configuration information is used to indicate a first position offset, where the first position offset is a position offset of an uplink demodulation reference signal (DMRS), and the first position offset is valid only in the first time slot.

8. The method according to claim 7, characterized in that The method further comprises: Uplink information is sent to the first network device on the uplink transmission resource, where the uplink information includes uplink data and uplink DMRS.

9. The method according to claim 8, characterized in that The time domain position of the uplink DMRS in the first time slot is obtained by shifting the initial time domain position of the uplink DMRS by a first position offset, the first position offset is the position offset of the uplink DMRS, and the time length of the first time slot does not exceed 1 time slot.

10. The method according to claim 8, characterized in that When there is no collision between the uplink DMRS and the CSI-RS, the time domain position of the uplink DMRS is the initial time domain position of the uplink DMRS; When the uplink DMRS collides with the CSI-RS, the time domain position of the uplink DMRS is obtained by shifting the initial time domain position of the uplink DMRS by a first position offset, where the first position offset is the position offset of the uplink DMRS.

11. The method according to claim 9 or 10, characterized in that The time domain symbols occupied by the uplink DMRS after being offset by the first position offset are different from the time domain symbols occupied by the CSI-RS resources.

12. The method according to claim 7 or 8, characterized in that The first configuration information is used to indicate the CSI-RS resource; or, The first configuration information is used to indicate the uplink transmission resource.

13. The method according to claim 7 or 8, characterized in that The method is executed by a user equipment or a chip in the user equipment.

14. A communication device, characterized in that: The device comprises: a processing unit, configured to determine a channel state information-reference signal (CSI-RS) resource of a second network device in a time-frequency resource, where the time-frequency resource includes a plurality of time slots in a time domain, the CSI-RS resource is located in a first time slot in the time domain, and the plurality of time slots include the first time slot; a sending unit, configured to send first configuration information to a user equipment, where the first configuration information is used to determine an uplink transmission resource in the time-frequency resource, where the uplink transmission resource does not overlap with the CSI-RS resource; The sending unit is further configured to: Second configuration information is sent to the user equipment, where the second configuration information is used to indicate a first position offset, where the first position offset is a position offset of an uplink demodulation reference signal (DMRS), and the first position offset is valid only in the first time slot.

15. The device according to claim 14, characterized in that The time domain symbols occupied by the uplink DMRS after being offset by the first position offset are different from the time domain symbols occupied by the CSI-RS resources.

16. The device according to claim 14 or 15, characterized in that The device further comprises: A receiving unit is configured to receive an RS from the second network device on the CSI-RS resource, and receive uplink information from the user equipment on the uplink transmission resource, wherein the uplink information includes uplink data and uplink DMRS.

17. The device according to claim 14 or 15, characterized in that The time-frequency resources include multiple RS resources of the second network device, and the CSI-RS resources are a subset of the multiple RS resources.

18. The device according to claim 14 or 15, characterized in that The first configuration information is used to indicate the CSI-RS resource; or, The first configuration information is used to indicate the uplink transmission resource.

19. The device according to claim 14 or 15, characterized in that The device is a first network device or a chip in the first network device.

20. A communication device, characterized in that: The device comprises: A receiving unit, configured to receive first configuration information from a first network device, where the first configuration information is used to determine an uplink transmission resource in a time-frequency resource; a processing unit, configured to determine the uplink transmission resource according to the first configuration information; wherein the uplink transmission resource does not overlap with a channel state information-reference signal CSI-RS resource of the second network device in the time-frequency resource, the time-frequency resource includes multiple time slots in the time domain, the CSI-RS resource is located in a first time slot in the time domain, and the multiple time slots include the first time slot; The receiving unit is further configured to: Second configuration information is received from the first network device, where the second configuration information is used to indicate a first position offset, where the first position offset is a position offset of an uplink demodulation reference signal (DMRS), and the first position offset is valid only in the first time slot.

21. The device according to claim 20, characterized in that The device further comprises: A sending unit is configured to send uplink information to the first network device on the uplink transmission resource, where the uplink information includes uplink data and an uplink demodulation reference signal (DMRS).

22. The device according to claim 21, characterized in that The time domain position of the uplink DMRS in the first time slot is obtained by shifting the initial time domain position of the uplink DMRS by a first position offset, the first position offset is the position offset of the uplink DMRS, and the time length of the first time slot does not exceed 1 time slot.

23. The device according to claim 21, characterized in that When there is no collision between the uplink DMRS and the CSI-RS, the time domain position of the uplink DMRS is the initial time domain position of the uplink DMRS; When the uplink DMRS collides with the CSI-RS, the time domain position of the uplink DMRS is obtained by shifting the initial time domain position of the uplink DMRS by a first position offset, where the first position offset is the position offset of the uplink DMRS.

24. The device according to claim 22 or 23, characterized in that The time domain symbols occupied by the uplink DMRS after being offset by the first position offset are different from the time domain symbols occupied by the CSI-RS resources.

25. The device according to claim 20 or 21, characterized in that The first configuration information is used to indicate the CSI-RS resource; or, The first configuration information is used to indicate the uplink transmission resource.

26. The device according to claim 20 or 21, characterized in that The device is a user equipment or a chip in the user equipment.

27. A communication device, characterized in that: The device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device performs the method according to any one of claims 1 to 13.

28. A communication device, characterized in that: include: processor and interface circuits; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method according to any one of claims 1 to 13.

29. A readable storage medium, characterized in that The device is used for storing instructions, and when the instructions are executed, the method according to any one of claims 1 to 13 is implemented.

Images