Communication method and communication device

Abstract

The invention provides a communication method and a communication device. The method comprises the following steps: network equipment allocates different resources to near-point terminal equipment and far-point terminal equipment, so that the same resource is not allocated to the near-point terminal equipment and the far-point terminal equipment at the same time, and the interference of a reference signal sent by the near-point terminal equipment on a reference signal sent by the far-point terminal equipment can be reduced; therefore, the signal quality of the reference signal sent by the far-point terminal equipment can be improved.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a communication method and a communication device. Background Art

[0002] As an independent reference signal, the sounding reference signal can not only be sent independently but also cover a larger frequency band.

[0003] The network equipment estimates the uplink channel quality based on the sounding reference signal, and allocates resources for physical uplink shared channel (PUSCH) transmission to the terminal device based on the uplink channel quality. For time division duplexing (TDD) systems, since the uplink and downlink channels are reciprocal, the network equipment can use the sounding reference signal to estimate the uplink channel quality, and allocate beamforming weights for the physical downlink shared channel (PDSCH) based on the uplink signal quality.

[0004] Since the resources used to send sounding reference signals are limited, when a large number of terminal devices need to send sounding reference signals, the same resource may be allocated to multiple terminal devices to send sounding reference signals at the same time. If the multiple terminal devices all compete to increase the transmission power, the sounding reference signals of the multiple terminal devices will interfere with each other. In particular, the transmission power of the near-point terminal devices will cause serious interference to the transmission power of the far-point terminal devices. Summary of the invention

[0005] Embodiments of the present application provide a communication method and a communication device for reducing mutual interference between different terminal devices when sending sounding reference signals.

[0006] In a first aspect, an embodiment of the present application provides a communication method, which can be performed by a network device or a module (such as a chip) in the network device. The method includes: determining the type of a first terminal device, the type of the first terminal device being a near-point terminal device or a far-point terminal device; and according to the type of the first terminal device, allocating a first resource to the first terminal device from resources corresponding to the type of the first terminal device, the first resource being used to send a reference signal.

[0007] In the above scheme, the network device allocates different resources to the near-point terminal device and the far-point terminal device, so the same resource will not be allocated to the near-point terminal device and the far-point terminal device at the same time. This can reduce the interference of the reference signal sent by the near-point terminal device to the reference signal sent by the far-point terminal device, and can improve the signal quality of the reference signal sent by the far-point terminal device.

[0008] In a possible implementation method, the reference signal includes a sounding reference signal.

[0009] In a possible implementation method, determining the type of the first terminal device includes: determining the type of the first terminal device according to uplink channel quality.

[0010] The above scheme determines the type of the first terminal device according to the uplink channel quality, which can accurately determine the type of the first terminal device and help to allocate appropriate resources for sending reference signals to the first terminal device.

[0011] In a possible implementation method, the method also includes: when the first terminal device is a terminal device that has initially accessed the network, determining the uplink channel quality based on a demodulation reference signal from the first terminal device; or, when the first terminal device is a terminal device that has already accessed the network, determining the uplink channel quality based on a detection reference signal from the first terminal device.

[0012] In a possible implementation method, the method also includes: dividing the available resources into at least two groups of resources, the at least two groups of resources including resources corresponding to near-point terminal devices and resources corresponding to far-point terminal devices, each group of the at least two groups of resources including at least one resource block, each resource block in the at least one resource block occupies a time unit in the time domain and occupies a comb resource in the frequency domain.

[0013] In a possible implementation method, the at least two groups of resources also include resources shared by the near-point terminal device and the far-point terminal device.

[0014] In a possible implementation method, the method also includes: determining resource search starting positions corresponding to multiple cells respectively, wherein the time interval between the resource search starting positions corresponding to any two cells among the multiple cells is greater than a first threshold; and starting to search for the available resources at the resource search starting positions.

[0015] In the above scheme, since the available resources in different cells are far apart in the time domain, the resources used by terminal devices in different cells to send sounding reference signals are also far apart, which helps to avoid mutual interference and improve the transmission quality of reference signals.

[0016] In a possible implementation method, the resources corresponding to the near-point terminal devices are shared by the near-point terminal devices in M ​​cells, and the resources corresponding to the far-point terminal devices are shared by the far-point terminal devices in N cells, where M and N are both positive integers.

[0017] The above solution can reduce mutual interference between cells in different groups and effectively improve the transmission quality of reference signals.

[0018] In a possible implementation method, allocating a first resource to the first terminal device from resources corresponding to the type of the first terminal device includes: allocating the first resource to the first terminal device from resources corresponding to the type of the first terminal device according to a reference signal capability of the first terminal device.

[0019] In the above scheme, the network device allocates the first resource to the first terminal device according to the reference signal capability of the first terminal device, so that appropriate resources can be allocated to the first terminal device.

[0020] In a possible implementation method, when the reference signal capability indicates support for multiple antenna selection reference signal resource sets, the first resource includes multiple semi-static antenna selection reference signal resource sets.

[0021] The above scheme can activate a suitable semi-static antenna selection reference signal resource set for the first terminal device, and can improve the signal quality of the reference signal sent by the first terminal device on the activated semi-static antenna selection reference signal resource set.

[0022] In a possible implementation method, the method also includes: when the first terminal device is a mobile terminal device, activating a first semi-static antenna selection reference signal resource set, the first semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the first semi-static antenna selection reference signal resource set is less than or equal to a second threshold; or, when the first terminal device is a non-mobile terminal device, activating a second semi-static antenna selection reference signal resource set, the second semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the second semi-static antenna selection reference signal resource set is greater than the second threshold.

[0023] In a possible implementation method, the method also includes: when the first terminal device is a near-point terminal device, activating resources of a third semi-static antenna selection reference signal resource set, the third semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the third semi-static antenna selection reference signal resource set is less than or equal to a third threshold; or, when the first terminal device is a far-point terminal device, activating resources of a fourth semi-static antenna selection reference signal resource set, the fourth semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the fourth semi-static antenna selection reference signal resource set is greater than the third threshold.

[0024] In one possible implementation method, when the reference signal capability indication supports one antenna selection reference signal resource set, and the number of semi-static reference signal resources supported by the first terminal device is greater than or equal to the number of periodic antenna selection reference signal resources supported by the first terminal device, the first resource includes one semi-static antenna selection reference signal resource set.

[0025] In the above scheme, the network device can configure a larger number of resources for sending reference signals for the first terminal device, which helps to obtain the channel status of the reference signals of more antennas of the first terminal device.

[0026] In a possible implementation method, the method further includes: when the reference signal interference state of the cell accessed by the first terminal device is a low interference state, activating the resources of the semi-static antenna selection reference signal resource set in the first resource; or, when the reference signal interference state of the cell accessed by the first terminal device is a medium interference state and the traffic volume of the first terminal device is less than a first traffic volume threshold, deactivating the resources of the semi-static antenna selection reference signal resource set in the first resource; or, when the reference signal interference state of the cell accessed by the first terminal device is a medium interference state and the traffic volume of the first terminal device is greater than or equal to the first traffic volume threshold, Activate the resources of the semi-static antenna selection reference signal resource set in the first resource; or, when the reference signal interference state of the cell accessed by the first terminal device is a high interference state and the traffic volume of the first terminal device is less than a second traffic volume threshold, deactivate the resources of the semi-static antenna selection reference signal resource set in the first resource; or, when the reference signal interference state of the cell accessed by the first terminal device is a high interference state and the traffic volume of the first terminal device is greater than or equal to the second traffic volume threshold, activate the resources of the semi-static antenna selection reference signal resource set in the first resource; wherein the second traffic volume threshold is greater than the first traffic volume threshold.

[0027] In the above scheme, the network equipment can monitor the interference status at the cell level in real time, and periodically dynamically activate or deactivate the resources for sending reference signals allocated to the terminal equipment based on the interference status, which helps to activate appropriate resources for sending reference signals for the terminal equipment.

[0028] In one possible implementation method, when the reference signal capability indication supports one antenna selection reference signal resource set and the number of semi-static reference signal resources supported by the first terminal device is less than the number of periodic antenna selection reference signal resources supported by the first terminal device, the first resource includes periodic antenna selection reference signal resources.

[0029] In the above scheme, the network device can configure a larger number of resources for sending reference signals for the first terminal device, which helps to obtain the channel status of the reference signals of more antennas of the first terminal device.

[0030] In a possible implementation method, the first resource also includes a long-period codebook reference signal resource.

[0031] In the above scheme, the network device can configure a long-period codebook reference signal resource for the first terminal device, which helps to improve the stability of the reference signal sent by the first terminal device.

[0032] In a second aspect, an embodiment of the present application provides a communication device, which may be a network device or a module (such as a chip) in a network device. The device has the function of implementing any implementation method of the first aspect described above. The function may be implemented by hardware or by executing corresponding software implementations by hardware. The hardware or software includes one or more modules corresponding to the above functions.

[0033] In a third aspect, an embodiment of the present application provides a communication device, comprising a unit or means for executing each step of any implementation method in the above-mentioned first aspect.

[0034] In a fourth aspect, an embodiment of the present application provides a communication device, including a processor and an interface circuit, wherein the processor is used to communicate with other devices through the interface circuit and execute any implementation method in the first aspect. The processor includes one or more.

[0035] Optionally, the communication device may further include a memory for storing computer instructions, the memory being coupled to a processor, and the processor executing the computer instructions stored in the memory so that the device executes any implementation method in the above-mentioned first aspect.

[0036] In a fifth aspect, an embodiment of the present application further provides a computer program product, which includes a computer program or instructions. When the computer program or instructions are executed by a communication device, any implementation method in the above-mentioned first aspect is executed.

[0037] In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a communication device, enables any implementation method in the above-mentioned first aspect to be executed.

[0038] In a seventh aspect, an embodiment of the present application further provides a chip system, comprising: a processor, configured to execute any implementation method in the above-mentioned first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG. 1( a ) is a schematic diagram of the architecture of a communication system used in an embodiment of the present application;

[0040] FIG1( b ) shows a schematic diagram of a network device;

[0041] Figure 2 A flow chart of a communication method provided in an embodiment of the present application;

[0042] Figure 3 Example diagram for resource partitioning;

[0043] Figure 4 This is another example diagram of resource partitioning;

[0044] Figure 5 Example graph of starting locations for resource searches;

[0045] Figure 6 Example diagram for grouping cells;

[0046] Figure 7 A flowchart of another communication method provided in an embodiment of the present application;

[0047] Figure 8 is an example diagram of resource allocation;

[0048] Fig. 9 It is another example diagram of resource allocation;

[0049] Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0050] Fig.11 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] FIG1(a) is a schematic diagram of the architecture of a communication system used in an embodiment of the present application. The communication system shown in FIG1(a) includes a wireless access network 100 and a core network 200. Optionally, the communication system also includes the Internet 300. The wireless access network 100 may include at least one network device (such as 110a and 110b in FIG1(a)), and may also include at least one terminal device (such as 120a-120j in FIG1(a)). The terminal device is connected to the network device by wireless means, and the network device is connected to the core network by wireless or wired means. The core network device and the network device may be independent and different physical devices, or the functions of the core network device and the logical functions of the network device may be integrated on the same physical device, or the functions of some core network devices and some network devices may be integrated on one physical device. Terminal devices and terminal devices and network devices and network devices may be connected to each other by wire or wireless means. FIG1(a) is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG1(a).

[0052] A network device is an access device that a terminal device accesses to a communication system through a wired or wireless method. A network device may be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation base station (next generation NodeB, gNB) in a fifth generation (5G) mobile communication system, a next generation base station in a sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; it may also be a module or unit that completes part of the functions of a base station, for example, a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). A network device may be a macro base station (such as 110a in FIG. 1(a)), a micro base station or an indoor station (such as 110b in FIG. 1(a)), or a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0053] The terminal device is a device with wireless transceiver function, which can send signals to network devices or receive signals from network devices. The terminal device includes but is not limited to terminal devices, terminals, user equipment (UE), mobile stations, mobile terminals, etc. The terminal device can be widely used in various scenarios, for example, device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can specifically be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0054] The network equipment and terminal equipment can be fixed or movable. The network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of the present application do not limit the application scenarios of the network equipment and terminal equipment.

[0055] The roles of network devices and terminal devices can be relative. For example, the helicopter or drone 120i in FIG. 1(a) can be configured as a mobile network device. For the terminal devices 120j that access the wireless access network 100 through 120i, the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between network devices. In this case, relative to 110a, 120i is also a network device. Therefore, network devices and terminal devices can be collectively referred to as communication devices. 110a and 110b in FIG. 1(a) can be referred to as communication devices with network device functions, and 120a-120j in FIG. 1(a) can be referred to as communication devices with terminal device functions.

[0056] Network devices and terminal devices, network devices and network devices, and terminal devices and terminal devices can communicate through authorized spectrum, unauthorized spectrum, or both; can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0057] In the embodiments of the present application, the functions of the network device may also be performed by a module (such as a chip) in the network device, or by a control subsystem including the network device function. The control subsystem including the network device function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or by a device including the terminal device function.

[0058] In this application, the network device sends a downlink signal or downlink information to the terminal device, and the downlink information is carried on the downlink channel; the terminal device sends an uplink signal or uplink information to the network device, and the uplink information is carried on the uplink channel. In order to communicate with the network device, the terminal device needs to establish a wireless connection with the cell controlled by the network device. The cell that has established a wireless connection with the terminal device is called the service cell of the terminal device.

[0059] FIG1(b) shows a schematic diagram of a network device. As shown in FIG1(b), the network device includes one or more CUs, one or more DUs, and one or more RUs. For the sake of clarity, FIG1(b) shows only one CU, DU, and RU. The CU is used to connect to the core network and one or more DUs. Optionally, the CU may have some functions of the core network. The CU may include a CU-control plane (CP) and a CU-user plane (UP).

[0060] CU and DU can be configured according to the protocol layer functions of the wireless network they implement: for example, CU is configured to implement the functions of the packet data convergence protocol (PDCP) layer and the protocol layers above (such as the radio resource control (RRC) layer and / or the service data adaptation protocol (SDAP) layer, etc.); DU is configured to implement the functions of the protocol layers below the PDCP layer (such as the radio link control (RLC) layer, the medium access control (MAC) layer, and / or the physical (PHY) layer, etc.). For another example, CU is configured to implement the functions of the protocol layers above the PDCP layer (such as the RRC layer and / or the SDAP layer), and DU is configured to implement the functions of the PDCP layer and the protocol layers below (such as the RLC layer, the MAC layer, and / or the PHY layer, etc.).

[0061] The above configuration of CU and DU is only an example, and the functions of CU and DU can also be configured as needed. For example, CU or DU can be configured to have functions of more protocol layers, or CU or DU can be configured to have partial processing functions of protocol layers. For example, some functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. For another example, the functions of CU or DU can be divided according to service type or other system requirements, such as by delay, and the functions whose processing time needs to meet the smaller delay requirement are set in the DU, and the functions that do not need to meet the delay requirement are set in the CU.

[0062] DU and RU can cooperate to jointly implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in a variety of ways according to the design. For example, DU is configured to implement baseband functions, and RU is configured to implement mid-RF functions. For another example, DU is configured to implement high-level functions in the PHY layer, and RU is configured to implement low-level functions in the PHY layer or to implement the low-level functions and RF functions. The high-level functions in the physical layer may include a part of the functions of the physical layer, which is closer to the MAC layer, and the low-level functions in the physical layer may include another part of the functions of the physical layer, which is closer to the mid-RF side.

[0063] CU and DU may be separately configured, or may be included in the same network element, such as a baseband unit (BBU). RU may be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH). In different systems, CU, DU or RU may also have different names, but those skilled in the art may understand their meanings. For example, in an ORAN system, CU may also be referred to as O-CU (open CU), DU may also be referred to as O-DU, and RU may also be referred to as O-RU. Any of the CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0064] Since the resources used to send sounding reference signals are limited, when a large number of terminal devices need to send sounding reference signals, the same resource may be allocated to multiple terminal devices for sending sounding reference signals. If the multiple terminal devices compete to increase the transmission power, the sounding reference signals of the multiple terminal devices will interfere with each other, especially the transmission power of the near-point terminal device will cause serious interference to the transmission power of the far-point terminal device. Therefore, when multiple terminal devices send sounding reference signals at the same time, how to reduce the interference between them needs to be solved.

[0065] To solve this problem, the present application provides corresponding embodiments, which are described in detail below.

[0066] Figure 2 A flow chart of a communication method provided in an embodiment of the present application. The method is executed by a network device, a CU, a DU or a RU, or by a module (such as a chip) of the network device, a CU, a DU or a RU. The following is an example of a network device executing the method.

[0067] The method comprises the following steps:

[0068] Step 201: The network device determines the type of a first terminal device, which is a near-point terminal device or a far-point terminal device.

[0069] In an embodiment of the present application, terminal devices are divided into two types, one type is near-point terminal devices, and the other type is far-point terminal devices. The uplink channel quality of near-point terminal devices is better than the uplink channel quality of far-point terminal devices. Exemplarily, when the uplink channel quality of a terminal device is greater than a channel quality threshold, the terminal device is determined to be a near-point terminal device; when the uplink channel quality of a terminal device is less than a channel quality threshold, the terminal device is determined to be a far-point terminal device; when the uplink channel quality of a terminal device is equal to a channel quality threshold, the terminal device is determined to be a near-point terminal device or a far-point terminal device. Therefore, the network device can determine the type of the first terminal device based on the uplink channel quality of the first terminal device. The specific value of the channel quality threshold can be set according to actual needs, and is not limited by the present application.

[0070] Exemplarily, when the first terminal device is a terminal device that has initially accessed the network, the network device determines the uplink channel quality of the first terminal device based on a reference signal sent by the first terminal device. In a 5G network, the reference signal may be a demodulation reference signal (DMRS). Alternatively, when the first terminal device is a terminal device that has already accessed the network, the network device determines the uplink channel quality of the first terminal device based on a reference signal from the first terminal device. In a 5G network, the reference signal may be a sounding reference signal (SRS).

[0071] Step 202: The network device allocates a first resource to the first terminal device from resources corresponding to the type of the first terminal device according to the type of the first terminal device.

[0072] The first resource is used to send a reference signal. Exemplarily, the reference signal includes a sounding reference signal or a demodulation reference signal.

[0073] In other words, if the first terminal device is a near-point terminal device, the network device allocates the first resource to the first terminal device from the resources corresponding to the near-point terminal device; if the first terminal device is a far-point terminal device, the network device allocates the first resource to the first terminal device from the resources corresponding to the far-point terminal device.

[0074] Through this method, the network device allocates different resources to the near-point terminal device and the far-point terminal device, so the same resource will not be allocated to the near-point terminal device and the far-point terminal device at the same time, which can reduce the interference of the reference signal sent by the near-point terminal device to the reference signal sent by the far-point terminal device, and improve the signal quality of the reference signal sent by the far-point terminal device. The signal quality can be measured by signal to interference plus noise ratio (signal to interference plus noise ratio, SINR).

[0075] In one implementation method, the network device divides available resources into at least two groups of resources, the at least two groups of resources include resources corresponding to near-point terminal devices and resources corresponding to far-point terminal devices, each of the at least two groups of resources includes at least one resource block (RB), each of the at least one resource block occupies a time unit in the time domain and occupies a comb resource in the frequency domain. The time unit can be a symbol or a slot, etc.

[0076] Optionally, the at least two groups of resources also include resources shared by the near terminal device and the far terminal device, and the shared resources may also be referred to as public flexible available resources, wherein the public flexible available resources may be used by the near terminal device or the far terminal device.

[0077] Figure 3 This is an example diagram of resource division. In this example, each square in the figure occupies one symbol in time and one comb resource in frequency. Assume that the available resources searched by the network device occupy symbols 10 to 13 in time and comb resources 0 to 1 in frequency. Among them, comb resource 0 means that on the RB where the reference signal is sent, each RB occupies subcarriers 0, 2, 4, 6, 8, and 10; comb resource 1 means that on the RB where the reference signal is sent, each RB occupies subcarriers 1, 3, 5, 7, 9, and 11. Taking the time unit as one symbol and comb=2 as an example, the available resources shown in the figure can be divided into 8 parts of resources, as follows:

[0078] Resource 0: occupies symbol 10 in time and comb resource 0 in frequency;

[0079] Resource 1: occupies symbol 10 in time and comb resource 1 in frequency;

[0080] Resource 2: occupies symbol 11 in time and comb resource 0 in frequency;

[0081] Resource 3: occupies symbol 11 in time and comb resource 1 in frequency;

[0082] Resource 4: occupies symbol 12 in time and comb resource 0 in frequency;

[0083] Resource 5: occupies symbol 12 in time and comb resource 1 in frequency;

[0084] Resource 6: occupies symbol 13 in time and comb resource 0 in frequency;

[0085] Resource 7: occupies symbol 13 in time and comb resource 1 in frequency.

[0086] Exemplarily, the above 8 parts of resources can be divided into resources corresponding to near-point terminal devices and resources corresponding to far-point terminal devices. For example, resources 0 to 3 are resources corresponding to near-point terminal devices, and resources 4 to 7 are resources corresponding to far-point terminal devices.

[0087] Exemplarily, the above eight parts of resources can be divided into resources corresponding to near-point terminal devices, resources corresponding to far-point terminal devices, and public flexible available resources. For example, resources 0 to 2 are resources corresponding to near-point terminal devices, resources 3 to 5 are resources corresponding to far-point terminal devices, and resources 6 to 7 are public flexible available resources.

[0088] Figure 4 This is another example of resource allocation. In this example, each time slot occupies 0.5 milliseconds (ms), so 10 consecutive time slots occupy 5ms. The 10 time slots include 7 downlink time slots (indicated by the letter D in the figure), 1 special time slot (indicated by S in the figure) and 2 uplink time slots (indicated by U in the figure). Each time slot includes 14 symbols. Figure 4 In the example, assume that the available resources searched by the network device occupy symbols 10 to 13 of each special time slot in 2 special time slots, and occupy comb resources 0 to 1 in frequency, where N is an integer greater than 1. The network device divides the multiple symbol resources of the available resources to obtain P+K+Q partial resources, each of which occupies 1 symbol in time and occupies comb resources in frequency. The comb resources occupy L subcarriers, where L is related to the value of comb. Specifically, the specific form of each part of the resources can be referred to Figure 3 The relevant description of the example. Among them, P, K, Q, L are all positive integers. The network device divides the P+K+Q part of the resources as follows:

[0089] Part P resources are used as resources corresponding to near-point terminal devices;

[0090] Part K of the resources are used as resources corresponding to the remote terminal equipment;

[0091] Part Q resources are available as public and flexible resources.

[0092] In one implementation method, in an embodiment of the present application, the network device may allocate resources to the terminal device according to the frequency hopping multiple of the resources. The frequency hopping multiple is the number of times the reference signal is sent in order to cover the total bandwidth of the resources used to send the reference signal. For example, if the total bandwidth of the resources used to send the reference signal is equal to 216 RBs, and each reference signal is sent 36 RBs, then six reference signals are required to cover the total bandwidth of the resources used to send the reference signal, that is, the frequency hopping multiple is equal to 6.

[0093] Exemplarily, the network device may allocate resources with a larger frequency hopping multiple as resources corresponding to the far-point terminal device, and allocate resources with a smaller frequency hopping multiple as resources corresponding to the near-point terminal device. For example, when the frequency hopping multiple of a certain part of resources is greater than a preset frequency hopping multiple threshold, the network device divides the part of resources into resources corresponding to the far-point terminal device; when the frequency hopping multiple of a certain part of resources is less than the preset frequency hopping multiple threshold, the network device divides the part of resources into resources corresponding to the near-point terminal device; when the frequency hopping multiple of a certain part of resources is equal to the preset frequency hopping multiple threshold, the network device divides the part of resources into resources corresponding to the far-point terminal device or resources corresponding to the near-point terminal device. Since the larger the frequency hopping multiple of a resource, when the terminal device sends a reference signal on the resource, the greater the RSRP of the reference signal received by the network device, so independently allocating resources with a large frequency hopping multiple to the far-point terminal device helps to reduce the interference to the reference signal sent by the far-point terminal device and improve the signal quality when the far-point terminal device sends the reference signal.

[0094] In the embodiment of the present application, the network device needs to search for available resources before performing resource division, and the available resources refer to idle resources that can be used to send reference signals.

[0095] As an implementation method, in an embodiment of the present application, the network device may randomize the starting position of the resource search at the cell level, and different cells determine the starting position of the resource search at the cell level based on the cell identifier. Exemplarily, the network device determines the starting positions of the resource search corresponding to a plurality of cells, wherein the time interval between the starting positions of the resource search corresponding to any two cells in the plurality of cells is greater than the first threshold, and then the network device starts searching for available resources at the starting position of the resource search. That is, the terminal devices served by different cells use different time-frequency resources to send reference signals. Figure 5 This is an example diagram of the resource search starting position. In this example, taking the first threshold of 4 time slots as an example, the resource search starting position corresponding to cell 0 is 5 time slots away from the resource search starting position corresponding to cell 1, the resource search starting position corresponding to cell 1 is 35 time slots away from the resource search starting position corresponding to cell 2, and the resource search starting position corresponding to cell 2 is 5 time slots away from the resource search starting position corresponding to cell 3. Based on this implementation method, resources are divided separately for each cell, and the resources of different cells are far apart, so that terminal devices in different cells can avoid mutual interference when sending reference signals. Figure 5For example, after searching for available resources in cell 0, cell 1, cell 2, and cell 3, the network device divides the available resources found in cell 0 into resources corresponding to near-point terminal devices in cell 0 and resources corresponding to far-point terminal devices in cell 0; for available resources found in cell 1, the network device divides the available resources found in cell 1 into resources corresponding to near-point terminal devices in cell 1 and resources corresponding to far-point terminal devices in cell 1; similarly for cells 2 and 3. Since the available resources in different cells are far apart in the time domain, the resources used by terminal devices in different cells to send sounding reference signals are also far apart, which helps to avoid mutual interference and improve the sending quality of reference signals.

[0096] As another implementation method, in an embodiment of the present application, the network device may also group multiple cells, and the terminal devices in the cells of the same group share the same resources for sending the detection reference signal. For example, a group includes M cells, and the near-point terminal devices in the M cells share the resources corresponding to the near-point terminal devices. Another group includes N cells, and the far-point terminal devices in the N cells share the resources corresponding to the far-point terminal devices. M and N are both positive integers, and M and N can be equal or unequal. Based on this implementation method, the mutual interference between cells in different groups can be reduced, and the transmission quality of the detection reference signal can be effectively improved.

[0097] It should be noted that in the embodiment of the present application, when the network device groups the cells, it can perform grouping once or multiple times. For example, after the first grouping, different cells in each group are grouped again to obtain subgroups of each group. It should be understood that the smallest group can include one cell or multiple cells. This is explained below with an example. Figure 6 This is an example diagram of cell grouping. In this example, the first grouping is performed by function f1, and the second grouping is performed by function f2, where f1(PCI)=PCI mod 3, f2(PCI)=PCI mod 2. PCI is the abbreviation of physical cell identification. mod represents a modulo function.

[0098] Therefore, if the PCI of a cell satisfies PCI mod 3 = 0, the PCI of the cell belongs to group 1. For the PCI in group 1, if PCI mod 2 = 0, the PCI of the cell belongs to group 1-1, and if PCI mod 2 = 1, the PCI of the cell belongs to group 1-2. That is, the PCI in group 1-1 satisfies: PCI mod 3 = 0 and PCI mod 2 = 0 at the same time, and the PCI in group 1-2 satisfies: PCI mod 3 = 0 and PCI mod 2 = 1 at the same time.

[0099] If the PCI of the cell satisfies PCI mod 3 = 1, the PCI of the cell belongs to group 2. For the PCI in group 2, if PCI mod 2 = 0, the PCI of the cell belongs to group 2-1, and if PCI mod 2 = 1, the PCI of the cell belongs to group 2-2. That is, the PCI in group 2-1 satisfies: PCI mod 3 = 1 and PCI mod 2 = 0, and the PCI in group 2-2 satisfies: PCI mod 3 = 1 and PCI mod 2 = 1.

[0100] If the PCI of a cell satisfies PCI mod 3 = 2, the PCI of the cell belongs to group 3. For the PCI in group 3, if PCI mod 2 = 0, the PCI of the cell belongs to group 3-1, and if PCI mod 2 = 1, the PCI of the cell belongs to group 3-2. That is, the PCI in group 3-1 satisfies: PCI mod 3 = 2 and PCI mod 2 = 0, and the PCI in group 3-2 satisfies: PCI mod 3 = 2 and PCI mod 2 = 1.

[0101] After two groupings, the results are shown in Table 1.

[0102]

[0103]

[0104] Referring to Table 1, the PCI in group 1 includes 0, 3, 6, 9, 12, 15, ..., and group 1 is divided into two sub-groups, wherein the PCI in sub-group 1-1 includes 0, 6, 12, ..., and the PCI in sub-group 1-2 includes 3, 9, 15, .... The PCI in group 2 includes 1, 4, 7, 10, 13, 16, ..., and group 2 is divided into two sub-groups, wherein the PCI in sub-group 2-1 includes 4, 10, 16, ..., and the PCI in sub-group 2-2 includes 1, 7, 13, .... The PCI in group 3 includes 2, 5, 8, 11, 14, 17, ..., and group 3 is divided into two sub-groups, wherein the PCI in sub-group 3-1 includes 2, 8, 14, ..., and the PCI in sub-group 3-2 includes 5, 11, 17, ....

[0105] See also Figure 6 , when the PCI value of the cell accessed by the first terminal device is an even number (i.e. f2(PCI)=0), the network device starts at the resource search starting position 1 and uses f1(PCI) to search for available resources. If f1(PCI)=0, and the first terminal device is a near-point terminal device, the first resource is allocated to the terminal device from resource pool 1. If f1(PCI)=1, and the first terminal device is a near-point terminal device, the first resource is allocated to the terminal device from resource pool 2. If f1(PCI)=2, and the first terminal device is a near-point terminal device, the first resource is allocated to the terminal device from resource pool 3. If f1(PCI)=0, and the first terminal device is a far-point terminal device, the first resource is allocated to the terminal device from resource pool 4. If f1(PCI)=1, and the first terminal device is a far-point terminal device, the first resource is allocated to the terminal device from resource pool 5. If f1(PCI)=2, and the first terminal device is a remote terminal device, the first resource is allocated to the terminal device from the resource pool 6 .

[0106] When the value of the PCI of the cell accessed by the first terminal device is an odd number (i.e., f2(PCI)=1), the network device starts at the resource search starting position 2 and uses f1(PCI) to search for available resources. If f1(PCI)=0, and the first terminal device is a near-point terminal device, the first resource is allocated to the terminal device from resource pool 7. If f1(PCI)=1, and the first terminal device is a near-point terminal device, the first resource is allocated to the terminal device from resource pool 8. If f1(PCI)=2, and the first terminal device is a near-point terminal device, the first resource is allocated to the terminal device from resource pool 9. If f1(PCI)=0, and the first terminal device is a far-point terminal device, the first resource is allocated to the terminal device from resource pool 10. If f1(PCI)=1, and the first terminal device is a far-point terminal device, the first resource is allocated to the terminal device from resource pool 11. If f1(PCI)=2, and the first terminal device is a remote terminal device, the first resource is allocated to the terminal device from the resource pool 12 .

[0107] It should be noted that the number of resources contained in each of the resource pools 1 to 12 is not limited and can be allocated by the network device, for example, the network device allocates resources based on the number of cells corresponding to the resource pool and / or the number of terminal devices in the cell. The number of resources contained in different resource pools can be the same or different.

[0108] The above-mentioned scheme of grouping cells can also be understood as grouping resources to obtain multiple groups of resources, each group of resources is allocated to one or more cells, and is used for terminal devices in the cells to send reference signals. In addition, the same group of resources can be further divided into two sub-groups, which are used for near-point terminal devices in the cells in the group to send reference signals, and for far-point terminal devices in the cells in the group to send reference signals.

[0109] Figure 7 A flow chart of another communication method provided in an embodiment of the present application. The method is executed by a network device or a module (such as a chip) for a network device. The following is an example of a network device executing the method. Figure 7 The embodiments can also be implemented separately or in combination. Figure 2 The embodiments are implemented.

[0110] The method comprises the following steps:

[0111] Step 701: The network device obtains the reference signal capability of the first terminal device.

[0112] For example, the network device obtains the capability information of the first terminal device, and the capability information includes the reference signal capability. Exemplarily, the first terminal device may report the capability information of the first terminal device to the network device, or the network device may obtain the capability information of the first terminal device from the core network, or the network device may obtain the capability information of the first terminal device from other network devices, which is not limited in this application.

[0113] Exemplarily, the reference signal capability is used to indicate the ability of the first terminal device to support the antenna to transmit the reference signal in turn. The reference signal capability may specifically be an SRS capability. For example, the reference signal capability is represented by the parameter supportedSRS-TxPortSwitch, and the value of the parameter includes t1r1, t1r2, t1r4, t2r2, t2r4, t4r4, t1r4-t2r4. Among them, the letter t represents the transmitting antenna, and the letter r represents the receiving antenna. T1r1 indicates support for 1 antenna to send and 1 antenna to receive, t1r2 indicates support for 1 antenna to send and 2 antennas to receive, and t1r4, t2r2, t2r4 and t4r4 have similar meanings. T1r4-t2r4 indicates that the terminal device supports both t1r4 and t2r4 and can switch between t1r4 and t2r4.

[0114] Step 702: The network device allocates a first resource to the first terminal device according to the reference signal capability of the first terminal device.

[0115] Exemplarily, step 702 may specifically be: the network device allocates the first resource to the first terminal device from the resources corresponding to the type of the first terminal device according to the reference signal capability of the first terminal device. The type of the first terminal device is a near-point terminal device or a far-point terminal device. For a detailed description of the resources corresponding to the near-point terminal device and the resources corresponding to the far-point terminal device, please refer to Figure 2 Description of embodiments.

[0116] In the above scheme, the network device allocates the first resource to the first terminal device according to the reference signal capability of the first terminal device, so that appropriate resources can be allocated to the first terminal device.

[0117] In one implementation method, the first resource allocated by the network device to the first terminal device is shown in Table 2.

[0118] Table 2

[0119]

[0120] Among them, the semi-static antenna selection (antena switch, AS) reference signal resource set refers to a resource set configured semi-statically for sending reference signals, and the semi-static antenna selection reference signal resource set needs to be activated through additional dynamic signaling. Exemplarily, the semi-static antenna selection reference signal resource set can be an SRS resource in which resourceTyper is configured as: semi-persistent and usage is configured as: antennaSwitching in RRC signaling.

[0121] The periodic antenna selection (antena switch, AS) reference signal resource refers to a pre-configured periodic resource for sending a reference signal, and the periodic antenna selection reference signal resource does not need to be activated by additional dynamic signaling. Exemplarily, the periodic antenna selection reference signal resource can be an SRS resource in which resourceTyper is configured as periodic and usage is configured as antennaSwitching in RRC signaling.

[0122] Long-period codebook (CB) reference signal resources refer to pre-configured periodic resources for sending reference signals, and long-period codebook reference signal resources do not need to be activated through additional dynamic signaling, and the period of long-period codebook reference signal resources is greater than that of periodic antenna selection reference signal resources. Exemplarily, the periodic antenna selection reference signal resources can be specifically configured as SRS resources in RRC signaling, resourceTyper is configured as periodic, and usage is configured as codebook.

[0123] See Table 2, which is divided into the following three situations:

[0124] In case 1, when the reference signal capability of the first terminal device indicates that the first terminal device supports multiple antenna selection reference signal resource sets, the first resource allocated by the network device to the first terminal device includes multiple semi-static antenna selection reference signal resource sets. Optionally, the first resource also includes a long period codebook reference signal resource.

[0125] In scenario 1, the first terminal device may specifically be a terminal device supporting the R17 (Release 17) version.

[0126] In this scenario 1, a plurality of semi-static antenna selection reference signal resource sets are allocated to the first terminal device, each of which includes one or more semi-static antenna selection reference signal resources. Subsequently, resources of one of the plurality of semi-static antenna selection reference signal resource sets can be activated for the first terminal device as needed. For example, the plurality of semi-static antenna selection reference signal resource sets correspond to different frequency hopping multiples, respectively. When the first terminal device is a near-point terminal device, the network device activates the resources of the semi-static antenna selection reference signal resource set with a smaller frequency hopping multiple among the plurality of semi-static antenna selection reference signal resource sets. Since the frequency hopping multiple is small, the reference signal that can be sent by the first terminal device can quickly cover the total bandwidth of the resources used to send the reference signal, and the channel status of the first terminal device in the activated semi-static antenna selection reference signal resource can be obtained in a timely manner. When the first terminal device is a remote terminal device, the network device activates the resources of the semi-static antenna selection reference signal resource set with a larger frequency hopping multiple among the multiple semi-static antenna selection reference signal resource sets. Since the frequency hopping multiple is larger, the RSRP of the reference signal sent by the first terminal device on the activated semi-static antenna selection reference signal resource set can be improved, which helps the network device to accurately receive the reference signal.

[0127] In case 2, when the reference signal capability indication of the first terminal device supports one antenna selection reference signal resource set, and the number of semi-static reference signal resources supported by the first terminal device is greater than or equal to the number of periodic antenna selection reference signal resources supported by the first terminal device, the first resource allocated by the network device to the first terminal device includes one semi-static antenna selection reference signal resource set. Optionally, the first resource also includes a long period codebook reference signal resource.

[0128] Among them, the number of semi-static reference signal resources supported by the first terminal device is indicated by the semi-static capability of the first terminal device, and the number of periodic antenna selection reference signal resources supported by the first terminal device is indicated by the periodic capability of the first terminal device. Therefore, the number of semi-static reference signal resources supported by the first terminal device is greater than or equal to the number of periodic antenna selection reference signal resources supported by the first terminal device, which can be understood as the semi-static capability is greater than or equal to the periodic capability.

[0129] In scenario 2, the first terminal device may specifically be a terminal device supporting R15 or R16 version.

[0130] For situation 2, the network device may configure a larger number of resources for sending reference signals for the first terminal device, which helps to obtain the channel states of reference signals of more antennas of the first terminal device.

[0131] In case 3, when the reference signal capability indication of the first terminal device supports one antenna selection reference signal resource set, and the number of semi-static reference signal resources supported by the first terminal device is less than the number of periodic antenna selection reference signal resources supported by the first terminal device, the first resource allocated by the network device to the first terminal device includes a periodic antenna selection reference signal resource. The first resource also includes a long period codebook reference signal resource.

[0132] For situation 3, the network device may configure a larger number of resources for sending reference signals for the first terminal device, which helps to obtain the channel states of reference signals of more antennas of the first terminal device.

[0133] In scenario 3, the first terminal device may specifically be a terminal device supporting R15 or R16 version.

[0134] For the above scenario 1, the network device allocates multiple semi-static antenna selection reference signal resource sets to the first terminal device, and the multiple semi-static antenna selection reference signal resource sets can correspond to different frequency hopping multiples respectively. The network device can activate the resources of the corresponding semi-static antenna selection reference signal resource set for the first terminal device according to the information of the first terminal device (such as whether it is a mobile terminal device or a near-point terminal device).

[0135] refer to Figure 8 , which is an example diagram of resource allocation. Exemplarily, when the first terminal device is a mobile terminal device, the network device activates the resources of the first semi-static antenna selection reference signal resource set in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the first semi-static antenna selection reference signal resource set is less than or equal to the second threshold. When the first terminal device is a non-mobile terminal device, the network device activates the resources of the second semi-static antenna selection reference signal resource set in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the second semi-static antenna selection reference signal resource set is greater than the second threshold. It can be understood that when the first terminal device is a mobile terminal device, the network device activates the resources with small frequency hopping for the first terminal device, so the reference signal that can be sent by the first terminal device can quickly cover the total bandwidth of the resources used to send the reference signal, and can track the changes in the channel state in time. When the first terminal device is a non-mobile terminal device, the network device activates the resources with large frequency hopping for the first terminal device, so the number of RBs occupied by each reference signal transmission can be reduced, the reference signal power on each RB is improved, and the reliability of the reference signal transmission is improved.

[0136] In the present application, a mobile terminal device may be understood as a mobile terminal device, or a terminal device whose mobile speed is higher than a certain threshold value. Correspondingly, a non-mobile terminal device may be understood as a stationary terminal device, or a terminal device whose mobile speed is lower than or equal to a certain threshold value.

[0137] refer to Fig. 9 , which is another example diagram of resource allocation. Exemplarily, in the case where the first terminal device is a near-point terminal device, the network device activates the resources of the third semi-static antenna selection reference signal resource set among the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the third semi-static antenna selection reference signal resource set is less than or equal to the third threshold. Since the frequency hopping multiple is small, the reference signal that can be sent by the first terminal device can quickly cover the total bandwidth of the resources used to send the reference signal, and the channel state of the first terminal device in the activated semi-static antenna selection reference signal resource can be obtained in time. Exemplarily, in the case where the first terminal device is a far-point terminal device, the network device activates the resources of the fourth semi-static antenna selection reference signal resource set among the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the fourth semi-static antenna selection reference signal resource set is greater than the third threshold. Since the frequency hopping multiple is large, the RSRP of the reference signal sent by the first terminal device on the activated semi-static antenna selection reference signal resource set can be improved, which helps the network device to accurately receive the reference signal.

[0138] Another implementation method is that for any of the above situations 1 to 3, the network equipment can monitor the interference status at the cell level in real time, and periodically dynamically activate or deactivate the resources for sending reference signals allocated to the terminal device based on the interference status, which helps to activate appropriate resources for sending reference signals for the terminal device.

[0139] For example, taking the cell accessed by the first terminal device (hereinafter referred to as cell 1) as an example, the interference level value can be used to measure the interference state, and the interference level value represents the interference level of cell 1 to the neighboring cell. The interference state is as follows:

[0140] The interference level value is less than the interference level threshold 1, indicating a low interference state;

[0141] The interference level value is equal to the interference level threshold 1, indicating a low interference state or a medium interference state;

[0142] The interference level value is greater than the interference level threshold 1 and less than the interference level threshold 2, indicating a medium interference state;

[0143] The interference level value is equal to the interference level threshold 2, indicating a medium interference state or a high interference state;

[0144] The interference level value is greater than the interference level threshold 2, indicating a high interference state.

[0145] The following are divided into situations, namely situation a, situation b and situation c.

[0146] In case a, when the reference signal interference state of cell 1 is a low interference state, the resources of the reference signal resource set are activated for the semi-static antenna selection of the terminal equipment in cell 1.

[0147] Taking the first terminal device in cell 1 as an example, the network device activates the resources of the semi-static antenna selection reference signal resource set in the first resources allocated to the first terminal device.

[0148] In case b, when the reference signal interference state of cell 1 is a medium interference state, the activation or deactivation of the resources of the semi-static antenna selection reference signal resource set is determined according to the traffic volume of the terminal equipment in cell 1.

[0149] For example, when the reference signal interference state of cell 1 is a medium interference state, the resources of the semi-static antenna selection reference signal resource set allocated to small packet users are deactivated, and the resources of the semi-static antenna selection reference signal resource set allocated to large packet users are activated. Among them, a small packet user refers to a terminal device whose traffic volume is less than a first traffic volume threshold, and a large packet user refers to a terminal device whose traffic volume is greater than or equal to the first traffic volume threshold. For example, the first traffic volume threshold is X. If the traffic volume of a terminal device within a set time period is less than X, then the terminal device is a small packet user. If the traffic volume of the terminal device within a set time period is greater than or equal to X, then the terminal device is a large packet user. In a specific implementation, large packet users include, for example, terminal devices that are playing videos and terminal devices that are broadcasting live on the Internet. Small packet users include, for example, terminal devices that are using WeChat and terminal devices that are making voice calls.

[0150] Taking the first terminal device in cell 1 as an example, when the reference signal interference state of cell 1 is a medium interference state and the traffic volume of the first terminal device is less than the first traffic volume threshold, the resources of the semi-static antenna selection reference signal resource set in the first resource allocated to the first terminal device are deactivated. When the reference signal interference state of cell 1 is a medium interference state and the traffic volume of the first terminal device is greater than or equal to the first traffic volume threshold, the resources of the semi-static antenna selection reference signal resource set in the first resource allocated to the first terminal device are activated.

[0151] For situation b, when the reference signal interference state of cell 1 is a medium interference state, the resources of the semi-static antenna selection reference signal resource set for small packet users are deactivated, and the resources of the semi-static antenna selection reference signal resource set for large packet users are activated. On the one hand, this can reduce the number of terminal devices sending reference signals and reduce the interference of cell 1 to neighboring cells. On the other hand, it does not affect the normal transmission of services by terminal devices with a large amount of business.

[0152] In case c, when the reference signal interference state of cell 1 is a high interference state, the traffic volume threshold is increased (for example, from the first traffic volume threshold to the second traffic volume threshold), and then the resources of the semi-static antenna selection reference signal resource set are activated or deactivated according to the traffic volume of the terminal equipment in cell 1.

[0153] For example, when the reference signal interference state of cell 1 is a high interference state, the resources of the semi-static antenna selection reference signal resource set allocated to small packet users are deactivated, and the resources of the semi-static antenna selection reference signal resource set allocated to large packet users are activated. Among them, a small packet user refers to a terminal device whose traffic volume is less than the second traffic volume threshold, and a large packet user refers to a terminal device whose traffic volume is greater than or equal to the second traffic volume threshold. For example, the second traffic volume threshold is Y. If the traffic volume of a terminal device within a set time period is less than Y, the terminal device is a small packet user. If the traffic volume of the terminal device within the set time period is greater than or equal to Y, the terminal device is a large packet user.

[0154] Taking the first terminal device in cell 1 as an example, when the reference signal interference state of cell 1 is a high interference state and the traffic volume of the first terminal device is less than the second traffic volume threshold, the resources of the semi-static antenna selection reference signal resource set in the first resource allocated to the first terminal device are deactivated. When the reference signal interference state of cell 1 is a high interference state and the traffic volume of the first terminal device is greater than or equal to the second traffic volume threshold, the resources of the semi-static antenna selection reference signal resource set in the first resource allocated to the first terminal device are activated.

[0155] For situation c, when the reference signal interference state of cell 1 is a high interference state, the traffic volume threshold for judging large packet users and small packet users is increased, the resources of the semi-static antenna selection reference signal resource set for small packet users are deactivated, and the resources of the semi-static antenna selection reference signal resource set for large packet users are activated. Since the traffic volume threshold is increased, more terminal devices are identified as small packet users, and the resources of the semi-static antenna selection reference signal resource set for small packet users are deactivated, so on the one hand, the number of terminal devices sending reference signals can be further reduced, and the interference of cell 1 to neighboring cells can be further reduced, and on the other hand, the normal transmission of services by terminal devices with large traffic volume is not affected.

[0156] Different implementation methods for determining a traffic volume threshold (such as the aforementioned first traffic volume threshold or second traffic volume threshold) for identifying a large packet user or a small packet user are introduced below.

[0157] Implementation method 1: The network device periodically counts the traffic volume of the terminal devices in the cell, and sorts the traffic volume of the terminal devices from high to low, and uses the traffic volume of the terminal devices in a preset ranking position as the traffic volume threshold.

[0158] For example, when the statistical period arrives, the cumulative business volume of each terminal device in the cell over a period of time is obtained and sorted from high to low. The business volume of the terminal device ranked 10th is used as the business volume threshold, or the business volume of the last terminal device among the top 20% of terminal devices is used as the business volume threshold, and so on.

[0159] Implementation method 2: The network device periodically counts the traffic volume of the terminal devices in the cell and sorts the traffic volume of the terminal devices from high to low. If the sum of the traffic volumes of the first x-1 terminal devices is less than L, and the sum of the traffic volumes of the first x terminal devices is greater than or equal to L, the traffic volume of the xth terminal device is determined as the traffic volume threshold. Wherein, L is the product of the sum of the traffic volumes of the terminal devices in the cell and the preset ratio.

[0160] The preset ratio here is a preset decimal or percentage greater than 0 and less than 1, such as 70%, 80% and so on.

[0161] For example, assuming that there are 100 terminal devices in a cell and the preset ratio is 80%, then L = the sum of the traffic volumes of the 100 terminal devices * 80%. The 100 terminal devices are sorted from high to low according to the traffic volume. If the sum of the traffic volumes of the first 49 terminal devices is less than L, and the sum of the traffic volumes of the first 50 terminal devices is greater than or equal to L, the traffic volume of the 50th terminal device is used as the traffic volume threshold.

[0162] Implementation method 3: The network device determines the service chain threshold according to the service volume scheduled by the terminal devices in the cell and the air interface capability of the network device.

[0163] The air interface capacity of a network device refers to the resources currently allocated to the network device. If the allocated resources are large, such as exceeding the resource amount threshold, it indicates that the air interface load is heavy, and the current air interface capacity is low; if the allocated resources are small, such as below the resource amount threshold, it indicates that the air interface load is light, and the current air interface capacity is strong.

[0164] In the implementation method 3, the network device comprehensively determines the traffic volume threshold according to the traffic volume scheduled by the terminal device in the cell and the air interface capability of the network device.

[0165] It is understandable that, in order to implement the functions in the above embodiments, the terminal device or network device includes a hardware structure and / or software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, 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 the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0166] Fig.10 and Fig.11 A schematic diagram of the structure of possible communication devices provided for embodiments of the present application. These communication devices can be used to implement the functions of the terminal device or network device in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication device can be a terminal device or a network device, and can also be a module (such as a chip) applied to a terminal device or a network device.

[0167] Fig.10 The communication device 1000 shown includes a processing unit 1010 and a transceiver unit 1020. The communication device 1000 is used to implement the functions of the terminal device or the network device in the above method embodiment.

[0168] When the communication device 1000 is used to implement the function of the network device in the above method embodiment, the processing unit 1010 is used to determine the type of the first terminal device, the type of the first terminal device is a near-point terminal device or a far-point terminal device; according to the type of the first terminal device, a first resource is allocated to the first terminal device from the resources corresponding to the type of the first terminal device, and the first resource is used to send a reference signal.

[0169] In a possible implementation method, the reference signal includes a sounding reference signal.

[0170] In a possible implementation method, the processing unit 1010 is used to determine the type of the first terminal device, specifically including: determining the type of the first terminal device according to the uplink channel quality.

[0171] In one possible implementation method, the processing unit 1010 is further used to determine the uplink channel quality based on a demodulation reference signal from the first terminal device when the first terminal device is a terminal device that has initially accessed the network; or, when the first terminal device is a terminal device that has already accessed the network, determine the uplink channel quality based on a detection reference signal from the first terminal device.

[0172] In one possible implementation method, the processing unit 1010 is also used to divide the available resources into at least two groups of resources, wherein the at least two groups of resources include resources corresponding to near-point terminal devices and resources corresponding to far-point terminal devices, and each group of resources in the at least two groups of resources includes at least one resource block, and each resource block in the at least one resource block occupies a time unit in the time domain and a comb resource in the frequency domain.

[0173] In a possible implementation method, the at least two groups of resources also include resources shared by the near-point terminal device and the far-point terminal device.

[0174] In a possible implementation method, the processing unit 1010 is also used to determine the resource search starting positions corresponding to multiple cells respectively, wherein the time interval between the resource search starting positions corresponding to any two cells among the multiple cells is greater than a first threshold; and start searching for the available resources at the resource search starting positions.

[0175] In a possible implementation method, the resources corresponding to the near-point terminal devices are shared by the near-point terminal devices in M ​​cells, and the resources corresponding to the far-point terminal devices are shared by the far-point terminal devices in N cells, where M and N are both positive integers.

[0176] In a possible implementation method, the processing unit 1010 is used to allocate the first resource to the first terminal device from the resources corresponding to the type of the first terminal device, specifically including: allocating the first resource to the first terminal device from the resources corresponding to the type of the first terminal device according to the reference signal capability of the first terminal device.

[0177] In a possible implementation method, when the reference signal capability indicates support for multiple antenna selection reference signal resource sets, the first resource includes multiple semi-static antenna selection reference signal resource sets.

[0178] In one possible implementation method, the processing unit 1010 is also used to activate resources of a first semi-static antenna selection reference signal resource set when the first terminal device is a mobile terminal device, the first semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the first semi-static antenna selection reference signal resource set is less than or equal to a second threshold; or, when the first terminal device is a non-mobile terminal device, activate resources of a second semi-static antenna selection reference signal resource set, the second semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the second semi-static antenna selection reference signal resource set is greater than the second threshold.

[0179] In one possible implementation method, the processing unit 1010 is also used to activate resources of a third semi-static antenna selection reference signal resource set when the first terminal device is a near-point terminal device, the third semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the third semi-static antenna selection reference signal resource set is less than or equal to a third threshold; or, when the first terminal device is a far-point terminal device, activate resources of a fourth semi-static antenna selection reference signal resource set, the fourth semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the fourth semi-static antenna selection reference signal resource set is greater than the third threshold.

[0180] In one possible implementation method, when the reference signal capability indication supports one antenna selection reference signal resource set, and the number of semi-static reference signal resources supported by the first terminal device is greater than or equal to the number of periodic antenna selection reference signal resources supported by the first terminal device, the first resource includes one semi-static antenna selection reference signal resource set.

[0181] In one possible implementation method, the processing unit 1010 is also used to activate the resources of the semi-static antenna selection reference signal resource set in the first resource when the reference signal interference state of the cell accessed by the first terminal device is a low interference state; or, when the reference signal interference state of the cell accessed by the first terminal device is a medium interference state and the traffic volume of the first terminal device is less than a first traffic volume threshold, deactivate the resources of the semi-static antenna selection reference signal resource set in the first resource; or, when the reference signal interference state of the cell accessed by the first terminal device is a medium interference state and the traffic volume of the first terminal device is greater than or equal to the first traffic volume threshold. , activating the resources of the semi-static antenna selection reference signal resource set in the first resource; or, when the reference signal interference state of the cell accessed by the first terminal device is a high interference state and the traffic volume of the first terminal device is less than a second traffic volume threshold, deactivating the resources of the semi-static antenna selection reference signal resource set in the first resource; or, when the reference signal interference state of the cell accessed by the first terminal device is a high interference state and the traffic volume of the first terminal device is greater than or equal to the second traffic volume threshold, activating the resources of the semi-static antenna selection reference signal resource set in the first resource; wherein the second traffic volume threshold is greater than the first traffic volume threshold.

[0182] In one possible implementation method, when the reference signal capability indication supports one antenna selection reference signal resource set and the number of semi-static reference signal resources supported by the first terminal device is less than the number of periodic antenna selection reference signal resources supported by the first terminal device, the first resource includes periodic antenna selection reference signal resources.

[0183] For a more detailed description of the processing unit 1010 and the transceiver unit 1020, reference may be made to the relevant description in the above method embodiment, which will not be repeated here.

[0184] Fig.11 The communication device 1100 shown includes a processor 1110 and an interface circuit 1120. The processor 1110 and the interface circuit 1120 are coupled to each other. It is understood that the interface circuit 1120 can be a transceiver or an input-output interface. Optionally, the communication device 1100 may also include a memory 1130 for storing instructions executed by the processor 1110 or storing input data required by the processor 1110 to execute instructions or storing data generated after the processor 1110 executes instructions.

[0185] When the communication device 1100 is used to implement the above method embodiment, the processor 1110 is used to implement the function of the above processing unit 1010 , and the interface circuit 1120 is used to implement the function of the above transceiver unit 1020 .

[0186] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0187] The method steps in the embodiments of the present application can be implemented by hardware, or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, register, hard disk, mobile hard disk, compact disc read-only memory (compact disc read-only memory, CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a terminal device or a network device. Of course, the processor and the storage medium can also be present in an access network device or a terminal as discrete components.

[0188] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. A computer program refers to a set of instructions for each step of an electronic computer or other device with message processing capability, usually written in a certain programming language, and running on a certain target architecture. When the computer program or instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid state drive. The computer-readable storage medium may be a volatile or non-volatile storage medium, or may include both volatile and non-volatile types of storage media.

[0189] In the various embodiments of the present application, unless otherwise specified or provided in a logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0190] In this application, "at least one" means one or more, and "more than one" 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. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of this application, the character " / " indicates that the previous and next associated objects are in a "division" relationship.

[0191] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: include: Determine a type of a first terminal device, where the type of the first terminal device is a near-point terminal device or a far-point terminal device; According to the type of the first terminal device, a first resource is allocated to the first terminal device from resources corresponding to the type of the first terminal device, where the first resource is used to send a reference signal.

2. The method according to claim 1, characterized in that The reference signal comprises a sounding reference signal.

3. The method according to claim 1 or 2, characterized in that The determining the type of the first terminal device includes: Determine the type of the first terminal device according to the uplink channel quality.

4. The method according to claim 3, characterized in that The method further comprises: In the case where the first terminal device is a terminal device that initially accesses the network, determining the uplink channel quality according to a demodulation reference signal from the first terminal device; or, In the case that the first terminal device is a terminal device that has already accessed the network, the uplink channel quality is determined according to a sounding reference signal from the first terminal device.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: The available resources are divided into at least two groups of resources, wherein the at least two groups of resources include resources corresponding to near-point terminal devices and resources corresponding to far-point terminal devices, each of the at least two groups of resources includes at least one resource block, and each resource block in the at least one resource block occupies a time unit in the time domain and a comb resource in the frequency domain.

6. The method according to claim 5, characterized in that The at least two groups of resources also include resources shared by the near-point terminal device and the far-point terminal device.

7. The method according to claim 5 or 6, characterized in that The method further comprises: Determine resource search starting positions corresponding to a plurality of cells respectively, wherein a time interval between resource search starting positions corresponding to any two cells among the plurality of cells is greater than a first threshold; The search for the available resources begins at the resource search start position.

8. The method according to any one of claims 1 to 7, characterized in that The resources corresponding to the near-point terminal devices are shared by the near-point terminal devices in M ​​cells, and the resources corresponding to the far-point terminal devices are shared by the far-point terminal devices in N cells, where M and N are both positive integers.

9. The method according to any one of claims 1 to 8, characterized in that Allocating a first resource to the first terminal device from resources corresponding to the type of the first terminal device includes: According to the reference signal capability of the first terminal device, the first resource is allocated to the first terminal device from resources corresponding to the type of the first terminal device.

10. The method according to claim 9, characterized in that In a case where the reference signal capability indicates support for multiple antenna selection reference signal resource sets, the first resource includes multiple semi-static antenna selection reference signal resource sets.

11. The method according to claim 10, characterized in that The method further comprises: In the case where the first terminal device is a mobile terminal device, activating resources of a first semi-static antenna selection reference signal resource set, the first semi-static antenna selection reference signal resource set being included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the first semi-static antenna selection reference signal resource set being less than or equal to a second threshold; or, In the case that the first terminal device is a non-mobile terminal device, the resources of the second semi-static antenna selection reference signal resource set are activated, the second semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the second semi-static antenna selection reference signal resource set is greater than the second threshold.

12. The method according to claim 10, characterized in that The method further comprises: In the case where the first terminal device is a near-point terminal device, activating resources of a third semi-static antenna selection reference signal resource set, the third semi-static antenna selection reference signal resource set being included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the third semi-static antenna selection reference signal resource set being less than or equal to a third threshold; or, In the case that the first terminal device is a remote terminal device, the resources of a fourth semi-static antenna selection reference signal resource set are activated, the fourth semi-static antenna selection reference signal resource set is included in the multiple semi-static antenna selection reference signal resource sets, and the frequency hopping multiple of the resources in the fourth semi-static antenna selection reference signal resource set is greater than the third threshold.

13. The method according to claim 9, characterized in that When the reference signal capability indication supports one antenna selection reference signal resource set, and the number of semi-static reference signal resources supported by the first terminal device is greater than or equal to the number of periodic antenna selection reference signal resources supported by the first terminal device, the first resource includes one semi-static antenna selection reference signal resource set.

14. The method according to claim 10 or 13, characterized in that The method further comprises: When the reference signal interference state of the cell accessed by the first terminal device is a low interference state, activating resources of the semi-static antenna selection reference signal resource set in the first resource; or, When the reference signal interference state of the cell accessed by the first terminal device is a medium interference state and the traffic volume of the first terminal device is less than a first traffic volume threshold, deactivate the resources of the semi-static antenna selection reference signal resource set in the first resource; or, When the reference signal interference state of the cell accessed by the first terminal device is a medium interference state and the traffic volume of the first terminal device is greater than or equal to the first traffic volume threshold, activate the resources of the semi-static antenna selection reference signal resource set in the first resource; or, When the reference signal interference state of the cell accessed by the first terminal device is a high interference state and the traffic volume of the first terminal device is less than a second traffic volume threshold, deactivate the resources of the semi-static antenna selection reference signal resource set in the first resource; or, When the reference signal interference state of the cell accessed by the first terminal device is a high interference state and the traffic volume of the first terminal device is greater than or equal to the second traffic volume threshold, activating resources of the semi-static antenna selection reference signal resource set in the first resource; The second traffic volume threshold is greater than the first traffic volume threshold.

15. The method according to claim 9, characterized in that When the reference signal capability indication supports one antenna selection reference signal resource set and the number of semi-static reference signal resources supported by the first terminal device is less than the number of periodic antenna selection reference signal resources supported by the first terminal device, the first resource includes periodic antenna selection reference signal resources.

16. The method according to any one of claims 10 to 15, characterized in that The first resource also includes a long-period codebook reference signal resource.

17. A communication device, characterized in that: Comprising modules for executing the method according to any one of claims 1 to 16.

18. A communication device, characterized in that: The device comprises a processor and an interface circuit, wherein the processor is used to communicate with other devices through the interface circuit and execute the method according to any one of claims 1 to 16.

19. A computer program product, characterized in that The computer program product comprises instructions, which, when executed on a processor, cause the processor to perform the method according to any one of claims 1 to 16.

20. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction, and when the computer program or instruction is executed by the communication device, the method described in any one of claims 1 to 16 is implemented.

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