Signal configuration method and device, terminal and network side equipment

Abstract

The invention provides a signal configuration method and device, a terminal and network side equipment, and relates to the technical field of communication, and the method comprises the steps: transmitting a first synchronous reference signal density corresponding to a cell to the terminal; under the condition that the first synchronous reference signal density does not meet the transmission requirement of the terminal, receiving a synchronous reference signal density requirement sent by the terminal; and sending a second synchronous reference signal density to the terminal based on the synchronous reference signal density demand, wherein the second synchronous reference signal density is used for configuring a synchronous reference signal of the terminal. The embodiment of the invention can improve the communication effect of the terminal.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a signal configuration method, device, terminal and network side equipment. Background Art

[0002] In the traditional Multiple-Input Multiple-Output (MIMO) system, the synchronization reference signal (such as the Tracking Reference Signal (TRS)) provides symbol-level time and frequency synchronization in the Radio Resource Control (RRC) connection state. TRS is a specially configured Channel State Information (CSI) Reference Signal (CSI Reference Signal, CSI-RS). The terminal continuously tracks and compensates for time deviation and frequency deviation by measuring TRS, thereby achieving time and frequency synchronization.

[0003] In the related art, a network-side device configures a fixed synchronization reference signal density for a terminal. The fixed synchronization reference signal density may not meet the transmission requirements of the terminal, resulting in poor communication effect of the terminal. Summary of the invention

[0004] The embodiments of the present invention provide a signal configuration method, apparatus, terminal and network side equipment to solve the problem in the related art that the network side equipment configures a fixed synchronization reference signal density for the terminal, and the fixed synchronization reference signal density may not meet the transmission requirements of the terminal, resulting in poor terminal communication effect.

[0005] To solve the above technical problems, the present invention is achieved as follows:

[0006] In a first aspect, an embodiment of the present invention provides a signal configuration method, which is performed by a network side device, and the method includes:

[0007] Sending a first synchronization reference signal density corresponding to the cell to the terminal;

[0008] When the first synchronization reference signal density does not meet the transmission requirement of the terminal, receiving a synchronization reference signal density requirement sent by the terminal;

[0009] A second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0010] Optionally, before sending the first synchronization reference signal density corresponding to the cell to the terminal, the method further includes:

[0011] Receive first indication information sent by the terminal, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet a transmission requirement of the terminal.

[0012] Optionally, the synchronization reference signal density requirement carries a third synchronization reference signal density;

[0013] The sending a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement includes:

[0014] A second synchronization reference signal density is sent to the terminal based on the third synchronization reference signal density.

[0015] Optionally, the method further comprises:

[0016] Sending a density comparison threshold to the terminal;

[0017] The density comparison threshold is used to determine whether the density of the first synchronization reference signal meets the transmission requirement of the terminal.

[0018] Optionally, after sending the first synchronization reference signal density corresponding to the cell to the terminal, the method further includes:

[0019] receiving second indication information sent by the terminal, where the second indication information is used to indicate whether the first synchronization reference signal density meets a transmission requirement of the terminal;

[0020] The sending a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement includes:

[0021] In a case where it is determined based on the second indication information that the first synchronization reference signal density does not meet the transmission requirement of the terminal, a second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement.

[0022] Optionally, the first synchronization reference signal density is characterized by a first synchronization reference signal distance, and / or the second synchronization reference signal density is characterized by a second synchronization reference signal distance, and / or the third synchronization reference signal density is characterized by a third synchronization reference signal distance.

[0023] Optionally, the first synchronization reference signal density is sent via radio resource control RRC signaling; and / or the second synchronization reference signal density is sent via downlink control information DCI signaling.

[0024] Optionally, the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal on a Type 1 physical downlink shared channel PDSCH.

[0025] In a second aspect, an embodiment of the present invention provides a signal configuration method, which is performed by a terminal, and the method includes:

[0026] receiving a first synchronization reference signal density corresponding to a cell sent by a network side device;

[0027] In a case where it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal, sending a synchronization reference signal density requirement to the network side device;

[0028] A second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement is received, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0029] Optionally, before receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes:

[0030] Sending first indication information to a network side device, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0031] Optionally, after receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes:

[0032] Determine a third synchronization reference signal density corresponding to the terminal, where the third synchronization reference signal density is a synchronization reference signal density that meets a transmission requirement of the terminal;

[0033] Determining whether the first synchronization reference signal density meets the transmission requirement of the terminal based on the first synchronization reference signal density and the third synchronization reference signal density;

[0034] The synchronization reference signal density requirement carries the third synchronization reference signal density.

[0035] Optionally, the method further comprises:

[0036] Receiving a density comparison threshold sent by the network side device;

[0037] The determining, based on the first synchronization reference signal density and the third synchronization reference signal density, whether the first synchronization reference signal density meets the transmission requirement of the terminal includes:

[0038] determining a density comparison parameter based on the first synchronization reference signal density and the third synchronization reference signal density;

[0039] Based on the density comparison parameter and the density comparison threshold, it is determined whether the first synchronization reference signal density meets the transmission requirement of the terminal.

[0040] Optionally, after receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes:

[0041] Sending second indication information to the network side device, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirement of the terminal.

[0042] Optionally, after sending the second indication information to the network side device, the method further includes:

[0043] In a case where it is determined that the first synchronization reference signal density meets the transmission requirement of the terminal, a synchronization reference signal of the terminal is configured based on the first synchronization reference signal density.

[0044] In a third aspect, an embodiment of the present invention provides a signal configuration device, which is applied to a network side device, and the device includes:

[0045] A first sending module, used to send a first synchronization reference signal density corresponding to a cell to a terminal;

[0046] A first receiving module, configured to receive a synchronization reference signal density requirement sent by the terminal when the first synchronization reference signal density does not meet the transmission requirement of the terminal;

[0047] The second sending module is used to send a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0048] Optionally, before sending the first synchronization reference signal density corresponding to the cell to the terminal, the apparatus further includes:

[0049] The second receiving module is used to receive first indication information sent by the terminal, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0050] Optionally, the synchronization reference signal density requirement carries a third synchronization reference signal density;

[0051] The second sending module is specifically used for:

[0052] A second synchronization reference signal density is sent to the terminal based on the third synchronization reference signal density.

[0053] Optionally, the device further comprises:

[0054] A third sending module, used for sending a density comparison threshold to the terminal;

[0055] The density comparison threshold is used to determine whether the density of the first synchronization reference signal meets the transmission requirement of the terminal.

[0056] Optionally, after sending the first synchronization reference signal density corresponding to the cell to the terminal, the apparatus further includes:

[0057] A third receiving module, used to receive second indication information sent by the terminal, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirement of the terminal;

[0058] The second sending module is specifically used for:

[0059] In a case where it is determined based on the second indication information that the first synchronization reference signal density does not meet the transmission requirement of the terminal, a second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement.

[0060] Optionally, the first synchronization reference signal density is characterized by a first synchronization reference signal distance, and / or the second synchronization reference signal density is characterized by a second synchronization reference signal distance, and / or the third synchronization reference signal density is characterized by a third synchronization reference signal distance.

[0061] Optionally, the first synchronization reference signal density is sent via radio resource control RRC signaling; and / or the second synchronization reference signal density is sent via downlink control information DCI signaling.

[0062] Optionally, the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal on a Type 1 physical downlink shared channel PDSCH.

[0063] In a fourth aspect, an embodiment of the present invention provides a signal configuration device, applied to a terminal, the device comprising:

[0064] A first receiving module, used for receiving a first synchronization reference signal density corresponding to a cell sent by a network side device;

[0065] A first sending module, configured to send a synchronization reference signal density requirement to the network side device when it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal;

[0066] The second receiving module is used to receive a second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure the synchronization reference signal of the terminal.

[0067] Optionally, before receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the apparatus further includes:

[0068] The second sending module is used to send first indication information to the network side device, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0069] Optionally, after receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the apparatus further includes:

[0070] A first determination module is used to determine a third synchronization reference signal density corresponding to the terminal, where the third synchronization reference signal density is a synchronization reference signal density that meets a transmission requirement of the terminal;

[0071] A second determination module, configured to determine whether the first synchronization reference signal density meets the transmission requirement of the terminal based on the first synchronization reference signal density and the third synchronization reference signal density;

[0072] The synchronization reference signal density requirement carries the third synchronization reference signal density.

[0073] Optionally, the device further comprises:

[0074] A third receiving module, configured to receive a density comparison threshold sent by the network side device;

[0075] The second determining module is specifically used for:

[0076] determining a density comparison parameter based on the first synchronization reference signal density and the third synchronization reference signal density;

[0077] Based on the density comparison parameter and the density comparison threshold, it is determined whether the first synchronization reference signal density meets the transmission requirement of the terminal.

[0078] Optionally, after receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the apparatus further includes:

[0079] The third sending module is used to send second indication information to the network side device, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirements of the terminal.

[0080] Optionally, after sending the second indication information to the network side device, the apparatus further includes:

[0081] A configuration module is used to configure the synchronization reference signal of the terminal based on the first synchronization reference signal density when it is determined that the first synchronization reference signal density meets the transmission requirements of the terminal.

[0082] In a fifth aspect, an embodiment of the present invention provides a network side device, including a transceiver and a processor.

[0083] The transceiver is used to: send a first synchronization reference signal density corresponding to a cell to a terminal;

[0084] The transceiver is further configured to: when the first synchronization reference signal density does not meet the transmission requirement of the terminal, receive a synchronization reference signal density requirement sent by the terminal;

[0085] The transceiver is further configured to: send a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0086] Optionally, the transceiver is further used to: receive first indication information sent by the terminal, the first indication information being used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0087] Optionally, the synchronization reference signal density requirement carries a third synchronization reference signal density;

[0088] The transceiver is specifically configured to: send a second synchronization reference signal density to the terminal based on the third synchronization reference signal density.

[0089] Optionally, the transceiver is further used to: send a density comparison threshold to the terminal;

[0090] The density comparison threshold is used to determine whether the density of the first synchronization reference signal meets the transmission requirement of the terminal.

[0091] Optionally, the transceiver is further used to: receive second indication information sent by the terminal, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirement of the terminal;

[0092] In a case where it is determined based on the second indication information that the first synchronization reference signal density does not meet the transmission requirement of the terminal, a second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement.

[0093] Optionally, the first synchronization reference signal density is characterized by a first synchronization reference signal distance, and / or the second synchronization reference signal density is characterized by a second synchronization reference signal distance, and / or the third synchronization reference signal density is characterized by a third synchronization reference signal distance.

[0094] Optionally, the first synchronization reference signal density is sent via radio resource control RRC signaling; and / or the second synchronization reference signal density is sent via downlink control information DCI signaling.

[0095] Optionally, the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal on a Type 1 physical downlink shared channel PDSCH.

[0096] In a sixth aspect, an embodiment of the present invention provides a terminal, including a transceiver and a processor.

[0097] The transceiver is used to: receive a first synchronization reference signal density corresponding to a cell sent by a network side device;

[0098] The transceiver is further configured to: send a synchronization reference signal density requirement to the network side device when it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal;

[0099] The transceiver is further used to: receive a second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0100] Optionally, the transceiver is further used to: send first indication information to a network side device, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0101] Optionally, the processor is used to: determine a third synchronization reference signal density corresponding to the terminal, where the third synchronization reference signal density is a synchronization reference signal density that meets a transmission requirement of the terminal;

[0102] Determining whether the first synchronization reference signal density meets the transmission requirement of the terminal based on the first synchronization reference signal density and the third synchronization reference signal density;

[0103] The synchronization reference signal density requirement carries the third synchronization reference signal density.

[0104] Optionally, the transceiver is further used to: receive a density comparison threshold sent by the network side device;

[0105] The processor is specifically used for:

[0106] determining a density comparison parameter based on the first synchronization reference signal density and the third synchronization reference signal density;

[0107] Based on the density comparison parameter and the density comparison threshold, it is determined whether the first synchronization reference signal density meets the transmission requirement of the terminal.

[0108] Optionally, the transceiver is further used to: send second indication information to the network side device, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirements of the terminal.

[0109] Optionally, the processor is configured to:

[0110] In a case where it is determined that the first synchronization reference signal density meets the transmission requirement of the terminal, a synchronization reference signal of the terminal is configured based on the first synchronization reference signal density.

[0111] In the seventh aspect, an embodiment of the present invention provides a network side device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the signal configuration method described in the first aspect above.

[0112] In an eighth aspect, an embodiment of the present invention provides a terminal, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the signal configuration method described in the second aspect above.

[0113] In the ninth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the signal configuration method described in the first aspect are implemented; or when the computer program is executed by a processor, the steps of the signal configuration method described in the second aspect are implemented.

[0114] In an embodiment of the present invention, a network-side device sends a first synchronization reference signal density corresponding to a cell to a terminal; when the first synchronization reference signal density does not meet the transmission requirements of the terminal, the network-side device receives a synchronization reference signal density requirement sent by the terminal; and based on the synchronization reference signal density requirement, a second synchronization reference signal density is sent to the terminal, and the second synchronization reference signal density is used to configure the synchronization reference signal of the terminal. In this way, through the feedback of the terminal on the first synchronization reference signal density at the cell level configured by the network-side device, the network-side device can configure the second synchronization reference signal density at the terminal level for the terminal in a targeted manner based on the synchronization reference signal density requirement sent by the terminal, thereby increasing the probability that the configured synchronization reference signal density meets the transmission requirements of the terminal, thereby improving the communication effect of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0115] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0116] Figure 1 It is one of the flow charts of a signal configuration method provided by an embodiment of the present invention;

[0117] Figure 2 This is a second flowchart of a signal configuration method provided by an embodiment of the present invention;

[0118] Figure 3 This is a flowchart of a signal configuration method provided by an embodiment of the present invention;

[0119] Figure 4 is a schematic diagram of a frequency domain pattern of a cell-level synchronization reference signal provided by an embodiment of the present invention;

[0120] Figure 5 It is a schematic diagram of a UE-specific synchronization reference signal frequency domain pattern provided by an embodiment of the present invention;

[0121] Figure 6 This is one of the structural schematic diagrams of a signal configuration device provided by an embodiment of the present invention;

[0122] Figure 7 This is a second structural diagram of a signal configuration device provided by an embodiment of the present invention;

[0123] Figure 8 It is a structural diagram of a network side device provided by an embodiment of the present invention;

[0124] Fig. 9 It is a schematic diagram of the structure of a terminal provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0125] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0126] In an embodiment of the present invention, a signal configuration method, apparatus, terminal and network-side equipment are proposed to solve the problem in the related art that the network-side equipment configures a fixed synchronization reference signal density for the terminal, and the fixed synchronization reference signal density may not meet the transmission requirements of the terminal, resulting in poor terminal communication effect.

[0127] See also Figure 1 , Figure 1 is a flow chart of a signal configuration method provided by an embodiment of the present invention, which is executed by a network side device, such as Figure 1 As shown, the method comprises the following steps:

[0128] Step 101: Send a first synchronization reference signal density corresponding to a cell to a terminal.

[0129] The first synchronization reference signal density corresponding to the cell can be described as a synchronization reference signal density of a specific cell (cell-specific), or can also be described as a cell-specific synchronization reference signal frequency domain density; or can also be described as a cell-specific synchronization accuracy. The network side device can configure the first synchronization reference signal density corresponding to the cell for the cell where the terminal is located through Radio Resource Control (RRC) signaling.

[0130] It should be noted that the network side device can also send the starting resource element (RE) position parameter corresponding to the cell to the terminal, and the starting RE position parameter is used to indicate the subcarrier number of the synchronization reference signal on the first resource block (RB) located on the RB. The starting RE position parameter corresponding to the cell can be a cell-specific starting RE position parameter.

[0131] Step 102: When the first synchronization reference signal density does not meet the transmission requirement of the terminal, receive a synchronization reference signal density requirement sent by the terminal.

[0132] Wherein, when determining that the first synchronization reference signal density does not meet the transmission requirements of the terminal, the terminal sends a synchronization reference signal density requirement to the network side device. The terminal may determine a third synchronization reference signal density corresponding to the terminal, where the third synchronization reference signal density is a synchronization reference signal density that meets the transmission requirements of the terminal; and determine whether the first synchronization reference signal density meets the transmission requirements of the terminal based on the first synchronization reference signal density and the third synchronization reference signal density.

[0133] It should be noted that, when the terminal determines that the first synchronization reference signal density meets the transmission requirement of the terminal, the terminal may configure the synchronization reference signal of the terminal based on the first synchronization reference signal density.

[0134] Step 103: Send a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0135] The second synchronization reference signal density can be described as the synchronization reference signal density of a specific terminal (UE-specific), or can also be described as the UE-specific synchronization reference signal frequency domain density; or can also be described as the UE-specific synchronization accuracy. The network side device can configure the second synchronization reference signal density for the terminal through downlink control information (Downlink Control Information, DCI) signaling.

[0136] In addition, the synchronization reference signal density requirement may carry a third synchronization reference signal density, and the third synchronization reference signal density is a synchronization reference signal density that meets the transmission requirement of the terminal. The network side device sends the second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, which may include the network side device sending the second synchronization reference signal density to the terminal based on the third synchronization reference signal density.

[0137] It should be noted that the network side device can also send a starting RE position parameter corresponding to the terminal to the terminal, and the starting RE position parameter is used to indicate the subcarrier number of the RB where the synchronization reference signal on the first RB is located. The starting RE position parameter corresponding to the terminal can be a UE-specific starting RE position parameter.

[0138] It should be noted that the 6G vision of "digital twins, ubiquitous intelligence" has put forward higher requirements for network performance indicators, such as terabit-level peak rate, 10-100Gbps user experience rate, and 2-3 times the spectrum efficiency improvement compared to 5G. As a new type of transmission technology that is expected to achieve higher spectrum efficiency, super-Nyquist technology has attracted widespread attention in the industry, such as time domain waveform overlapping multiplexing (such as super-Nyquist (FTN), time domain overlapping multiplexing (OVTDM)), high-efficiency frequency division multiplexing (SE-FDM), etc. The above transmission technologies all achieve spectrum efficiency improvement through asynchronous transmission and oversampling at the receiving end. To this end, from the beginning of 6G research, academia and industry have studied super-Nyquist transmission technology from multiple angles such as sampling theorem, coding modulation, and multiple antennas.

[0139] Through relevant research, we can draw a consistent conclusion: the capacity improvement of the super-Nyquist transmission system is to utilize the extra bandwidth brought by the non-zero roll-off factor; as the signal-to-noise ratio increases, the spectrum efficiency of the super-Nyquist transmission system is asymptotically equal to the classic Shannon spectrum efficiency, that is, the spectrum efficiency of super-Nyquist transmission does not exceed the Shannon limit. The reason for this conclusion is that when the received signal is matched filtered and oversampled, correlated noise will be generated, and the higher the proportion of correlated noise, the greater the loss of system performance.

[0140] In view of the shortcomings of the existing super-Nyquist transmission system, relevant researchers have further proposed a new MIMO technology solution, which is expected to significantly improve the spectrum efficiency. However, this solution needs to improve the downlink synchronization accuracy to the sampling point level. Compared with the symbol-level synchronization accuracy in the existing MIMO system, the synchronization accuracy in this new MIMO system needs to be improved by dozens, hundreds or even thousands of times.

[0141] However, in traditional MIMO systems, the Tracking Reference Signal (TRS) provides symbol-level time and frequency synchronization in the RRC connection state. TRS is a specially configured CSI-RS. The terminal continuously tracks and compensates for time deviation and frequency deviation by measuring TRS, thereby achieving time and frequency synchronization. However, in the prior art, the frequency domain density of TRS is fixed to 3, that is, there are 3 REs in each RB as TRS. Even if the frequency domain density of TRS is extended to the minimum frequency domain density of CSI-RS in 5G NR of 0.5, the time domain synchronization accuracy can only be increased by 9 times at most, which is far from meeting the synchronization accuracy requirements of the new MIMO system. In order to adapt to the higher level of time domain synchronization accuracy in this new MIMO system, the frequency domain density of the synchronization reference signal must be greatly reduced.

[0142] In addition, the synchronization accuracy requirements of this new MIMO system are related to multiple parameters such as terminal capabilities and the number of downlink transmission streams, which may change to a certain extent during each PDSCH transmission. However, the existing TRS reference signals are configured using RRC signaling, with a relatively low configuration frequency and a relatively long interval. Therefore, the reference signal frequency domain density remains unchanged for a period of time, which makes it difficult to meet the requirements of the new MIMO transmission to adjust the synchronization accuracy in a timely manner.

[0143] The embodiment of the present invention specially designs the synchronization reference signal in the new MIMO system to improve the synchronization accuracy of the MIMO system. The embodiment of the present invention designs a two-level synchronization reference signal configuration structure. For example, the cell-specific synchronization reference signal frequency domain density can be configured by RRC signaling as the common synchronization accuracy of the current cell; on this basis, the UE-specific synchronization reference signal frequency domain density is configured by DCI signaling to promptly respond to the higher synchronization accuracy requirements proposed by each terminal (User Equipment, UE).

[0144] Compared with the existing protocol in which CSI-RS configuration is completed by RRC signaling, the embodiment of the present invention takes into account the characteristics of the frequently changing requirements of the new MIMO system for synchronization accuracy, and designs a two-level synchronization reference signal frequency domain configuration scheme combining RRC with DCI, which is compatible with the existing protocol and can respond promptly to the higher synchronization accuracy requirements put forward by each UE.

[0145] In an embodiment of the present invention, a network-side device sends a first synchronization reference signal density corresponding to a cell to a terminal; when the first synchronization reference signal density does not meet the transmission requirements of the terminal, the network-side device receives a synchronization reference signal density requirement sent by the terminal; and based on the synchronization reference signal density requirement, a second synchronization reference signal density is sent to the terminal, and the second synchronization reference signal density is used to configure the synchronization reference signal of the terminal. In this way, through the feedback of the terminal on the first synchronization reference signal density at the cell level configured by the network-side device, the network-side device can configure the second synchronization reference signal density at the terminal level for the terminal in a targeted manner based on the synchronization reference signal density requirement sent by the terminal, thereby increasing the probability that the configured synchronization reference signal density meets the transmission requirements of the terminal, thereby improving the communication effect of the terminal.

[0146] Optionally, before sending the first synchronization reference signal density corresponding to the cell to the terminal, the method further includes:

[0147] Receive first indication information sent by the terminal, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet a transmission requirement of the terminal.

[0148] The terminal may send the first indication information to the network side device. The reporting method of the first indication information includes but is not limited to reporting as UE capability in RRC signaling; or implicitly reporting it as a sequence number or group of a preamble at initial access; or reporting it as the content of the physical uplink shared channel (PUSCH) of message 3 (Msg3) / message A (MsgA) at initial access; and so on.

[0149] In an embodiment of the present invention, a network side device receives first indication information sent by the terminal, and can determine through the first indication information whether the terminal has the ability to report the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0150] Optionally, the synchronization reference signal density requirement carries a third synchronization reference signal density;

[0151] The sending a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement includes:

[0152] A second synchronization reference signal density is sent to the terminal based on the third synchronization reference signal density.

[0153] The second synchronization reference signal density may be determined based on the third synchronization reference signal density. For example, the value of the second synchronization reference signal density may be the third synchronization reference signal density; or, the value of the second synchronization reference signal density may be the sum of the third synchronization reference signal density and a preset value; or, the value of the second synchronization reference signal density may be the difference between the third synchronization reference signal density and the preset value; and so on; this embodiment does not limit this. The preset value may be 1, or 2, or 3, and so on.

[0154] In addition, the third synchronization reference signal density can be described as a UE-specific synchronization reference signal density requirement, or can also be described as a UE-specific synchronization reference signal frequency domain density requirement; or can also be described as a UE-specific synchronization accuracy requirement.

[0155] In an embodiment of the present invention, the synchronization reference signal density requirement carries a third synchronization reference signal density, and the network side device sends a second synchronization reference signal density to the terminal based on the third synchronization reference signal density, so that the network side device can configure the second synchronization reference signal density at the terminal level for the terminal in a targeted manner through the third synchronization reference signal density carried in the synchronization reference signal density requirement.

[0156] Optionally, the method further comprises:

[0157] Sending a density comparison threshold to the terminal;

[0158] The density comparison threshold is used to determine whether the density of the first synchronization reference signal meets the transmission requirement of the terminal.

[0159] Among them, after receiving the density comparison threshold sent by the network side device, the terminal can determine the density comparison parameter based on the first synchronization reference signal density and the third synchronization reference signal density carried in the synchronization reference signal density requirement; based on the density comparison parameter and the density comparison threshold, determine whether the first synchronization reference signal density meets the transmission requirements of the terminal.

[0160] In one implementation, the density comparison parameter may be a ratio of the third synchronization reference signal density to the first synchronization reference signal density.

[0161] In one implementation, when the density comparison parameter is less than the density comparison threshold, it is determined that the first synchronization reference signal density meets the transmission requirements of the terminal. When the density comparison parameter is greater than or equal to the density comparison threshold, it is determined that the first synchronization reference signal density does not meet the transmission requirements of the terminal.

[0162] In one implementation, the density comparison threshold is greater than 1.

[0163] In the embodiment of the present invention, the network side device sends a density comparison threshold to the terminal, so that the terminal can determine whether the first synchronization reference signal density meets the transmission requirement of the terminal based on the density comparison threshold.

[0164] Optionally, after sending the first synchronization reference signal density corresponding to the cell to the terminal, the method further includes:

[0165] receiving second indication information sent by the terminal, where the second indication information is used to indicate whether the first synchronization reference signal density meets a transmission requirement of the terminal;

[0166] The sending a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement includes:

[0167] In a case where it is determined based on the second indication information that the first synchronization reference signal density does not meet the transmission requirement of the terminal, a second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement.

[0168] In an embodiment of the present invention, the terminal may send second indication information to the network side device, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirement of the terminal. When the network side device determines based on the second indication information that the first synchronization reference signal density does not meet the transmission requirement of the terminal, the network side device sends a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, so that the network side device can determine whether to configure a terminal-level second synchronization reference signal density for the terminal in a targeted manner based on the second indication information sent by the terminal.

[0169] Optionally, the first synchronization reference signal density is characterized by a first synchronization reference signal distance, and / or the second synchronization reference signal density is characterized by a second synchronization reference signal distance, and / or the third synchronization reference signal density is characterized by a third synchronization reference signal distance.

[0170] It should be noted that, considering that in the existing protocol, when the CSI-RS density is 0.5, it means that every two RBs are grouped together, and in each group, CSI-RS only exists on odd-numbered or even-numbered RBs, and the flexible configuration of RBs in which reference signals appear in each group is not supported. To this end, the embodiment of the present invention takes into account the sparse configuration of the synchronization reference signal in the frequency domain, and directly uses the synchronization reference signal distance parameter to design the frequency domain occurrence positions of two adjacent synchronization reference signals.

[0171] In addition, the synchronization reference signal distance may refer to the synchronization reference signal frequency domain distance. Considering the characteristic that only two frequency domain REs with a large interval can provide high-precision time domain synchronization accuracy, the embodiment of the present invention changes the characteristic of inflexible reference signal frequency domain configuration in the existing protocol, and flexibly controls the frequency domain interval between two consecutive synchronization reference signals through the synchronization reference signal frequency domain distance. Different from the existing configuration scheme in which the TRS frequency domain density is fixed at 3 and the configuration scheme in which the reference signal pattern is designed for each RB or RB group, the synchronization reference signal frequency domain distance is designed to realize flexible configuration of the synchronization reference signal frequency domain pattern, thereby greatly improving the synchronization accuracy of the UE.

[0172] Optionally, the first synchronization reference signal density is sent via radio resource control RRC signaling; and / or the second synchronization reference signal density is sent via downlink control information DCI signaling.

[0173] The embodiment of the present invention takes into account the fact that the synchronization accuracy requirements of each UE often change, and also takes into account the compatibility with existing protocols, and designs an effective two-level synchronization reference signal configuration scheme that jointly utilizes RRC signaling and DCI signaling to efficiently provide appropriate synchronization accuracy for each terminal user.

[0174] Optionally, the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal on a Type 1 physical downlink shared channel PDSCH.

[0175] In an embodiment of the present invention, in order to avoid the situation where synchronization reference signals that are far apart in the frequency domain cover PDSCH resources that do not belong to the current terminal allocation in a Type 0 physical downlink shared channel (PDSCH) (i.e., a discontinuous PDSCH resource configuration scheme), thereby causing ambiguity, an embodiment of the present invention designs the synchronization reference signal configuration in the case of Type 1 PDSCH frequency domain continuous resource allocation configured by RRC signaling, thereby performing a special design for the synchronization reference signal on the Type 1 PDSCH, thereby avoiding the situation where sparse synchronization reference signals on the Type 0 PDSCH fall into resources that do not belong to the current terminal, thereby avoiding ambiguity.

[0176] See also Figure 2 , Figure 2 is a flow chart of a signal configuration method provided by an embodiment of the present invention, which is executed by a terminal, such as Figure 2 As shown, the method comprises the following steps:

[0177] Step 201: Receive a first synchronization reference signal density corresponding to a cell sent by a network side device;

[0178] Step 202: When it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal, send a synchronization reference signal density requirement to the network side device;

[0179] Step 203: Receive a second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0180] Optionally, before receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes:

[0181] Sending first indication information to a network side device, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0182] Optionally, after receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes:

[0183] Determine a third synchronization reference signal density corresponding to the terminal, where the third synchronization reference signal density is a synchronization reference signal density that meets a transmission requirement of the terminal;

[0184] Determining whether the first synchronization reference signal density meets the transmission requirement of the terminal based on the first synchronization reference signal density and the third synchronization reference signal density;

[0185] The synchronization reference signal density requirement carries the third synchronization reference signal density.

[0186] Optionally, the method further comprises:

[0187] Receiving a density comparison threshold sent by the network side device;

[0188] The determining, based on the first synchronization reference signal density and the third synchronization reference signal density, whether the first synchronization reference signal density meets the transmission requirement of the terminal includes:

[0189] determining a density comparison parameter based on the first synchronization reference signal density and the third synchronization reference signal density;

[0190] Based on the density comparison parameter and the density comparison threshold, it is determined whether the first synchronization reference signal density meets the transmission requirement of the terminal.

[0191] Optionally, after receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes:

[0192] Sending second indication information to the network side device, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirement of the terminal.

[0193] Optionally, after sending the second indication information to the network side device, the method further includes:

[0194] In a case where it is determined that the first synchronization reference signal density meets the transmission requirement of the terminal, a synchronization reference signal of the terminal is configured based on the first synchronization reference signal density.

[0195] It should be noted that this embodiment is Figure 1 The implementation method of the corresponding terminal in the embodiment shown in the figure can be found in the specific implementation method. Figure 1 To avoid repeated description, the relevant descriptions in the illustrated embodiment will not be repeated in this embodiment.

[0196] like Figure 3As shown, as a specific embodiment, taking the network side device as a terminal as an example, for the continuous allocation of Type1 PDSCH frequency domain resources configured by RRC signaling, the base station first configures the cell-specific synchronization accuracy (such as the first synchronization reference signal density) for the cell through RRC signaling, and then the terminal (ie, UE) determines whether the synchronization accuracy can meet the downlink transmission requirements;

[0197] If the requirements can be met, the terminal reports the cell-specific synchronization accuracy to the base station; if the requirements cannot be met, the terminal reports the synchronization accuracy requirement (such as the synchronization reference signal density requirement). After receiving the requirement, the base station additionally configures the UE-specific synchronization accuracy (such as the second synchronization reference signal density) for the terminal and uses DCI to notify the terminal of the configuration result.

[0198] First, the terminals in the cell need to report support for this new MIMO transmission scheme. The reporting methods include but are not limited to reporting as UE capabilities in RRC signaling; or implicitly reporting it as the preamble sequence number or grouping at the time of initial access; or reporting it as the content of Msg3 / MsgA PUSCH at the time of initial access; etc.

[0199] When the base station receives the information reported by the terminal and the PDSCH frequency domain resources of the cell are configured as Type 1 continuous resource allocation by RRC signaling, the base station also needs to configure the Cell-specific synchronization accuracy for the cell and add an additional UE-specific synchronization accuracy configuration threshold (such as a density comparison threshold) in the RRC signaling. The characterization method of the Cell-specific synchronization accuracy includes but is not limited to the use of Cell-specific synchronization reference signal frequency domain interval parameters (such as Cell-specific synchronization reference signal distance parameters) and / or starting RE position parameters to jointly characterize.

[0200] The frequency domain interval parameter value of the synchronization reference signal is an integer greater than or equal to 1, indicating that two REs where two synchronization reference signals are located are separated by a parameter number of consecutive REs in the frequency domain;

[0201] The starting RE position parameter value is an integer greater than or equal to 0, indicating the subcarrier number of the synchronization reference signal on the first RB.

[0202] The UE-specific synchronization accuracy configuration threshold is a number greater than 1, indicating that if the ratio of the terminal's synchronization accuracy requirement to the Cell-specific synchronization accuracy is greater than or equal to the threshold, the base station needs to additionally configure UE-specific synchronization accuracy for the current terminal.

[0203] The terminal determines its synchronization reference signal distance requirement parameter (such as the third synchronization reference signal density), which represents the frequency domain distance of adjacent downlink synchronization reference signals calculated from the synchronization accuracy required by the terminal in this downlink MIMO transmission. That is, the terminal requires two adjacent downlink synchronization reference signals to be spaced by this parameter number of continuous REs in the frequency domain to meet its synchronization requirements.

[0204] The terminal divides the UE's synchronization reference signal distance requirement parameter by the Cell-specific synchronization reference signal distance parameter, and compares the ratio (such as a density comparison parameter) with the UE-specific synchronization accuracy configuration threshold to determine whether to request the base station to configure UE-specific synchronization accuracy for it.

[0205] If the ratio (such as the density comparison parameter) is less than the UE-specific synchronization accuracy configuration threshold, it indicates that the UE's synchronization accuracy is not significantly higher than the Cell-specific synchronization accuracy. At this time, the UE reports the UE-specific synchronization reference signal indication information (such as the second indication information) with a value of 0. After receiving the parameter, the base station determines that there is no need to additionally configure UE-specific synchronization accuracy for the current UE, and the terminal continues to use the Cell-specific synchronization accuracy. The specific method for the terminal to report the UE-specific synchronization reference signal indication information parameter includes but is not limited to reporting it together with the CSI feedback information in the UCI, etc.

[0206] If the ratio (such as the density comparison parameter) is greater than or equal to the UE-specific synchronization accuracy configuration threshold, it indicates that the UE's synchronization accuracy requirement is significantly higher than the Cell-specific synchronization accuracy. At this time, the UE reports the UE-specific synchronization reference signal indication information (such as the second indication information UE-specific Sync_RS indicator) with a value of 1. At the same time, the synchronization reference signal distance requirement parameter is reported, which represents the adjacent downlink synchronization reference frequency domain distance calculated from the synchronization accuracy required by the terminal in this downlink MIMO transmission, that is, the terminal needs two downlink synchronization reference signals to be spaced by this parameter number of continuous REs in the frequency domain to meet its synchronization requirements;

[0207] The specific manner in which the terminal reports the UE-specific synchronization reference signal indication information parameter and the synchronization reference signal distance requirement parameter includes but is not limited to reporting them together with the CSI feedback information in the UCI, etc.

[0208] The base station receives the UE-specific synchronization reference signal indication information, determines that the UE-specific synchronization accuracy needs to be configured for the current UE, and configures it according to the synchronization reference signal distance requirement parameter reported by the UE, and finally notifies the UE of the UE-specific synchronization reference signal configuration through the downlink DCI;

[0209] Among them, the characterization method of UE-specific synchronization accuracy includes but is not limited to the use of UE-specific synchronization reference signal frequency domain interval parameters (such as UE-specific synchronization reference signal distance parameters) and / or starting RE position parameters, etc. for joint characterization, and the meaning of each parameter is the same as the meaning of the parameter under Cell-specific.

[0210] The configuration of the synchronization reference signal is described below through two embodiments:

[0211] Embodiment 1:

[0212] Assume that a UE reports support for this new type of MIMO transmission in the terminal capability, so the base station configures the following parameters through RRC signaling to jointly represent the frequency domain pattern of the cell-level synchronization reference signal:

[0213] Cell-specific Sync_RS distance=40

[0214] Cell-specific Sync_RE location=4

[0215] Among them, Cell-specific Sync_RS distance represents the Cell-specific synchronization reference signal distance parameter; Cell-specific Sync_RE location represents the Cell-specific starting RE location parameter.

[0216] That is, the synchronization reference signal appears every 40 REs. The synchronization reference signal on the first RB is located on the subcarrier numbered 4. Therefore, the frequency domain pattern of the cell-level synchronization reference signal can be expressed as Figure 4 The pattern shown.

[0217] In addition, the base station also sends the UE-specific synchronization accuracy configuration threshold in the RRC signaling:

[0218] Configuration threshold=2

[0219] Among them, Configuration threshold represents the UE-specific synchronization accuracy configuration threshold.

[0220] Then, the terminal determines that its own synchronization accuracy requirement is UE Sync_RS distance demand = 50. The terminal divides this value by the cell-level synchronization reference signal distance parameter and compares it with the UE-specific synchronization accuracy configuration threshold. In this embodiment, although the UE's synchronization accuracy requirement is slightly higher than the cell-level synchronization accuracy, because 50 / 40<2, the terminal uses the uplink UCI to report the UE-specific Sync_RS indicator value as 0. Among them, the UE-specific Sync_RS indicator represents the UE-specific synchronization reference signal indication information.

[0221] After receiving the parameter, the base station determines that there is no need to configure UE-specific synchronization accuracy for the terminal, and the UE can continue to use the cell-level synchronization accuracy. Figure 4 The UE can use this pattern to implement high-precision sampling point-level time offset correction.

[0222] Embodiment 2:

[0223] Assume that a certain UE reports support for this new type of MIMO transmission in the terminal capability, so the base station configures the following parameters through RRC signaling, which is the same as in Example 1:

[0224] Cell-specific Sync_RS distance=40

[0225] Cell-specific Sync_RE location=4

[0226] Therefore, the cell-level synchronization reference signal frequency domain pattern of the cell is Figure 4 Totally consistent.

[0227] In addition, the base station also sends the UE-specific synchronization accuracy configuration threshold in the RRC signaling:

[0228] Configuration threshold=2

[0229] Then, the terminal determines its own synchronization accuracy requirement as UE Sync_RS distance demand = 129. Among them, UE Sync_RS distance demand represents the synchronization reference signal distance requirement parameter of the UE. The terminal divides this value with the cell-level synchronization reference signal distance parameter and compares it with the UE-specific synchronization accuracy configuration threshold. Because 129 / 40>2, the terminal uses the uplink UCI to report the UE-specific Sync_RS indicator value as 1, and UE Sync_RS distance demand = 129.

[0230] After receiving the above two parameters, the base station first determines the need to configure UE-specific synchronization accuracy for the UE through the first parameter UE-specific Sync_RSindicator, and then combines the second parameter UE Sync_RSdistance demand to determine that the UE-specific synchronization accuracy can be expressed by the following two parameters:

[0231] UE-specific Sync_RS distance=129

[0232] UE-specific Sync_RE location=7

[0233] Among them, UE-specific Sync_RS distance represents a UE-specific synchronization reference signal distance parameter; UE-specific Sync_RE location represents a UE-specific starting RE location parameter.

[0234] The base station notifies the UE of the above two parameters through the downlink DCI. At this time, the actual synchronization reference signal pattern on the UE side is as follows: Figure 5 As shown, the UE-level synchronization reference signal appears once every 129 REs in the frequency domain, and the starting UE is located on the subcarrier numbered 7 in the first RB.

[0235] The embodiment of the present invention designs a two-level synchronization reference signal configuration structure, which uses RRC signaling to configure the cell-specific synchronization reference signal frequency domain density as the common synchronization accuracy of the current cell; on this basis, DCI signaling is used to configure the UE-specific synchronization reference signal frequency domain density to promptly respond to the higher synchronization accuracy requirements put forward by each UE.

[0236] See also Figure 6 , Figure 6is a structural diagram of a signal configuration device provided by an embodiment of the present invention, which is applied to a network side device, that is, the network side device includes the signal configuration device, such as Figure 6 As shown, the signal configuration device 300 includes:

[0237] A first sending module 301 is used to send a first synchronization reference signal density corresponding to a cell to a terminal;

[0238] A first receiving module 302 is configured to receive a synchronization reference signal density requirement sent by the terminal when the first synchronization reference signal density does not meet the transmission requirement of the terminal;

[0239] The second sending module 303 is configured to send a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0240] Optionally, before sending the first synchronization reference signal density corresponding to the cell to the terminal, the apparatus further includes:

[0241] The second receiving module is used to receive first indication information sent by the terminal, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0242] Optionally, the synchronization reference signal density requirement carries a third synchronization reference signal density;

[0243] The second sending module is specifically used for:

[0244] A second synchronization reference signal density is sent to the terminal based on the third synchronization reference signal density.

[0245] Optionally, the device further comprises:

[0246] A third sending module, used for sending a density comparison threshold to the terminal;

[0247] The density comparison threshold is used to determine whether the density of the first synchronization reference signal meets the transmission requirement of the terminal.

[0248] Optionally, after sending the first synchronization reference signal density corresponding to the cell to the terminal, the apparatus further includes:

[0249] A third receiving module, used to receive second indication information sent by the terminal, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirement of the terminal;

[0250] The second sending module is specifically used for:

[0251] In a case where it is determined based on the second indication information that the first synchronization reference signal density does not meet the transmission requirement of the terminal, a second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement.

[0252] Optionally, the first synchronization reference signal density is characterized by a first synchronization reference signal distance, and / or the second synchronization reference signal density is characterized by a second synchronization reference signal distance, and / or the third synchronization reference signal density is characterized by a third synchronization reference signal distance.

[0253] Optionally, the first synchronization reference signal density is sent via radio resource control RRC signaling; and / or the second synchronization reference signal density is sent via downlink control information DCI signaling.

[0254] Optionally, the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal on a Type 1 physical downlink shared channel PDSCH.

[0255] Network side equipment can achieve Figure 1 The various processes implemented by the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0256] See also Figure 7 , Figure 7 is a structural diagram of a signal configuration device provided by an embodiment of the present invention, which is applied to a terminal, that is, the terminal includes the signal configuration device, such as Figure 7 As shown, the signal configuration device 400 includes:

[0257] The first receiving module 401 is used to receive a first synchronization reference signal density corresponding to a cell sent by a network side device;

[0258] A first sending module 402 is configured to send a synchronization reference signal density requirement to the network side device when it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal;

[0259] The second receiving module 403 is used to receive a second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure the synchronization reference signal of the terminal.

[0260] Optionally, before receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the apparatus further includes:

[0261] The second sending module is used to send first indication information to the network side device, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0262] Optionally, after receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the apparatus further includes:

[0263] A first determination module is used to determine a third synchronization reference signal density corresponding to the terminal, where the third synchronization reference signal density is a synchronization reference signal density that meets a transmission requirement of the terminal;

[0264] A second determination module, configured to determine whether the first synchronization reference signal density meets the transmission requirement of the terminal based on the first synchronization reference signal density and the third synchronization reference signal density;

[0265] The synchronization reference signal density requirement carries the third synchronization reference signal density.

[0266] Optionally, the device further comprises:

[0267] A third receiving module, configured to receive a density comparison threshold sent by the network side device;

[0268] The second determining module is specifically used for:

[0269] determining a density comparison parameter based on the first synchronization reference signal density and the third synchronization reference signal density;

[0270] Based on the density comparison parameter and the density comparison threshold, it is determined whether the first synchronization reference signal density meets the transmission requirement of the terminal.

[0271] Optionally, after receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the apparatus further includes:

[0272] The third sending module is used to send second indication information to the network side device, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirements of the terminal.

[0273] Optionally, after sending the second indication information to the network side device, the apparatus further includes:

[0274] A configuration module is used to configure the synchronization reference signal of the terminal based on the first synchronization reference signal density when it is determined that the first synchronization reference signal density meets the transmission requirements of the terminal.

[0275] The terminal can achieve Figure 2 The various processes implemented by the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0276] An embodiment of the present invention also provides a network side device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, the various processes of the above-mentioned signal configuration method embodiment applied to the network side device are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0277] For details, see Figure 8 As shown, an embodiment of the present invention further provides a network side device, including a bus 501 , a transceiver 502 , an antenna 503 , a bus interface 504 , a processor 505 and a memory 506 .

[0278] The transceiver 502 is used to: send a first synchronization reference signal density corresponding to a cell to a terminal;

[0279] The transceiver 502 is further configured to: when the first synchronization reference signal density does not meet the transmission requirement of the terminal, receive a synchronization reference signal density requirement sent by the terminal;

[0280] The transceiver 502 is further configured to: send a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

[0281] Optionally, the transceiver 502 is further used to: receive first indication information sent by the terminal, the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0282] Optionally, the synchronization reference signal density requirement carries a third synchronization reference signal density;

[0283] The transceiver 502 is specifically configured to: send a second synchronization reference signal density to the terminal based on the third synchronization reference signal density.

[0284] Optionally, the transceiver 502 is further configured to: send a density comparison threshold to the terminal;

[0285] The density comparison threshold is used to determine whether the density of the first synchronization reference signal meets the transmission requirement of the terminal.

[0286] Optionally, the transceiver 502 is further used to: receive second indication information sent by the terminal, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirement of the terminal;

[0287] In a case where it is determined based on the second indication information that the first synchronization reference signal density does not meet the transmission requirement of the terminal, a second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement.

[0288] Optionally, the first synchronization reference signal density is characterized by a first synchronization reference signal distance, and / or the second synchronization reference signal density is characterized by a second synchronization reference signal distance, and / or the third synchronization reference signal density is characterized by a third synchronization reference signal distance.

[0289] Optionally, the first synchronization reference signal density is sent via radio resource control RRC signaling; and / or the second synchronization reference signal density is sent via downlink control information DCI signaling.

[0290] Optionally, the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal on a Type 1 physical downlink shared channel PDSCH.

[0291] exist Figure 8 In the embodiment, the bus architecture (represented by bus 501) is shown, and bus 501 may include any number of interconnected buses and bridges, and bus 501 links various circuits including one or more processors 505 represented by processor 505 and memory represented by memory 506. Bus 501 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 504 provides an interface between bus 501 and transceiver 502. Transceiver 502 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 505 is transmitted on a wireless medium via antenna 503, and further, antenna 503 also receives data and transmits the data to processor 505.

[0292] The processor 505 is responsible for managing the bus 501 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 506 can be used to store data used by the processor 505 when performing operations.

[0293] Optionally, the processor 505 may be a CPU, an ASIC, an FPGA or a CPLD.

[0294] An embodiment of the present invention also provides a terminal, comprising: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, the various processes of the above-mentioned signal configuration method embodiment applied to the terminal are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0295] For details, see Fig. 9 As shown, an embodiment of the present invention further provides a terminal, including a bus 601 , a transceiver 602 , an antenna 603 , a bus interface 604 , a processor 605 and a memory 606 .

[0296] The transceiver 602 is used to: receive a first synchronization reference signal density corresponding to a cell sent by a network side device;

[0297] The transceiver 602 is further configured to: send a synchronization reference signal density requirement to the network side device when it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal;

[0298] The transceiver 602 is further used to: receive a second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure the synchronization reference signal of the terminal.

[0299] Optionally, the transceiver 602 is further used to: send first indication information to a network side device, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

[0300] Optionally, the processor 605 is configured to: determine a third synchronization reference signal density corresponding to the terminal, where the third synchronization reference signal density is a synchronization reference signal density that meets a transmission requirement of the terminal;

[0301] Determining whether the first synchronization reference signal density meets the transmission requirement of the terminal based on the first synchronization reference signal density and the third synchronization reference signal density;

[0302] The synchronization reference signal density requirement carries the third synchronization reference signal density.

[0303] Optionally, the transceiver 602 is further configured to: receive a density comparison threshold sent by the network side device;

[0304] The processor 605 is specifically configured to:

[0305] determining a density comparison parameter based on the first synchronization reference signal density and the third synchronization reference signal density;

[0306] Based on the density comparison parameter and the density comparison threshold, it is determined whether the first synchronization reference signal density meets the transmission requirement of the terminal.

[0307] Optionally, the transceiver 602 is further used to: send second indication information to the network side device, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirements of the terminal.

[0308] Optionally, the processor 605 is configured to:

[0309] In a case where it is determined that the first synchronization reference signal density meets the transmission requirement of the terminal, a synchronization reference signal of the terminal is configured based on the first synchronization reference signal density.

[0310] exist Fig. 9 In the embodiment, a bus architecture (represented by bus 601) is shown, bus 601 may include any number of interconnected buses and bridges, bus 601 links various circuits including one or more processors 605 represented by processor 605 and memory represented by memory 606. Bus 601 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 604 provides an interface between bus 601 and transceiver 602. Transceiver 602 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 605 is transmitted on a wireless medium via antenna 603, and further, antenna 603 also receives data and transmits the data to processor 605.

[0311] The processor 605 is responsible for managing the bus 601 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 606 can be used to store data used by the processor 605 when performing operations.

[0312] Optionally, the processor 605 may be a CPU, an ASIC, an FPGA or a CPLD.

[0313] The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the above-mentioned signal configuration method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a ROM, RAM, a magnetic disk or an optical disk.

[0314] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0315] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0316] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A signal configuration method, executed by a network side device, characterized in that: The method comprises: Sending a first synchronization reference signal density corresponding to the cell to the terminal; When the first synchronization reference signal density does not meet the transmission requirement of the terminal, receiving a synchronization reference signal density requirement sent by the terminal; A second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

2. The method according to claim 1, characterized in that Before sending the first synchronization reference signal density corresponding to the cell to the terminal, the method further includes: Receive first indication information sent by the terminal, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet a transmission requirement of the terminal.

3. The method according to claim 1, characterized in that The synchronization reference signal density requirement carries a third synchronization reference signal density; The sending a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement includes: A second synchronization reference signal density is sent to the terminal based on the third synchronization reference signal density.

4. The method according to claim 1, characterized in that: The method further comprises: Sending a density comparison threshold to the terminal; The density comparison threshold is used to determine whether the density of the first synchronization reference signal meets the transmission requirement of the terminal.

5. The method according to claim 1, characterized in that After sending the first synchronization reference signal density corresponding to the cell to the terminal, the method further includes: receiving second indication information sent by the terminal, where the second indication information is used to indicate whether the first synchronization reference signal density meets a transmission requirement of the terminal; The sending a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement includes: In a case where it is determined based on the second indication information that the first synchronization reference signal density does not meet the transmission requirement of the terminal, a second synchronization reference signal density is sent to the terminal based on the synchronization reference signal density requirement.

6. The method according to claim 3, characterized in that The first synchronization reference signal density is characterized by a first synchronization reference signal distance, and / or the second synchronization reference signal density is characterized by a second synchronization reference signal distance, and / or the third synchronization reference signal density is characterized by a third synchronization reference signal distance.

7. The method according to any one of claims 1 to 6, characterized in that The first synchronization reference signal density is sent via radio resource control RRC signaling; and / or the second synchronization reference signal density is sent via downlink control information DCI signaling.

8. A signal configuration method, executed by a terminal, characterized in that: The method comprises: receiving a first synchronization reference signal density corresponding to a cell sent by a network side device; In a case where it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal, sending a synchronization reference signal density requirement to the network side device; A second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement is received, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

9. The method according to claim 8, characterized in that Before receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes: Sending first indication information to a network side device, where the first indication information is used to indicate whether the terminal supports reporting the synchronization reference signal density requirement when the first synchronization reference signal density does not meet the transmission requirement of the terminal.

10. The method according to claim 8, characterized in that After receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes: Determine a third synchronization reference signal density corresponding to the terminal, where the third synchronization reference signal density is a synchronization reference signal density that meets a transmission requirement of the terminal; Determining whether the first synchronization reference signal density meets the transmission requirement of the terminal based on the first synchronization reference signal density and the third synchronization reference signal density; The synchronization reference signal density requirement carries the third synchronization reference signal density.

11. The method according to claim 10, characterized in that The method further comprises: Receiving a density comparison threshold sent by the network side device; The determining, based on the first synchronization reference signal density and the third synchronization reference signal density, whether the first synchronization reference signal density meets the transmission requirement of the terminal includes: determining a density comparison parameter based on the first synchronization reference signal density and the third synchronization reference signal density; Based on the density comparison parameter and the density comparison threshold, it is determined whether the first synchronization reference signal density meets the transmission requirement of the terminal.

12. The method according to any one of claims 8 to 11, characterized in that: After receiving the first synchronization reference signal density corresponding to the cell sent by the network side device, the method further includes: Sending second indication information to the network side device, where the second indication information is used to indicate whether the first synchronization reference signal density meets the transmission requirement of the terminal.

13. The method according to claim 12, characterized in that After sending the second indication information to the network side device, the method further includes: In a case where it is determined that the first synchronization reference signal density meets the transmission requirement of the terminal, a synchronization reference signal of the terminal is configured based on the first synchronization reference signal density.

14. A signal configuration device, applied to a network side device, characterized in that: The device comprises: A first sending module, used to send a first synchronization reference signal density corresponding to a cell to a terminal; A first receiving module, configured to receive a synchronization reference signal density requirement sent by the terminal when the first synchronization reference signal density does not meet the transmission requirement of the terminal; The second sending module is used to send a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

15. A signal configuration device, applied to a terminal, characterized in that: The device comprises: A first receiving module, used for receiving a first synchronization reference signal density corresponding to a cell sent by a network side device; A first sending module, configured to send a synchronization reference signal density requirement to the network side device when it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal; The second receiving module is used to receive a second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure the synchronization reference signal of the terminal.

16. A network side device, characterized in that: Including transceiver and processor, The transceiver is used to: send a first synchronization reference signal density corresponding to a cell to a terminal; The transceiver is further configured to: when the first synchronization reference signal density does not meet the transmission requirement of the terminal, receive a synchronization reference signal density requirement sent by the terminal; The transceiver is further configured to: send a second synchronization reference signal density to the terminal based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

17. A terminal, characterized in that: Including transceiver and processor, The transceiver is used to: receive a first synchronization reference signal density corresponding to a cell sent by a network side device; The transceiver is further configured to: send a synchronization reference signal density requirement to the network side device when it is determined that the first synchronization reference signal density does not meet the transmission requirement of the terminal; The transceiver is further used to: receive a second synchronization reference signal density sent by the network side device based on the synchronization reference signal density requirement, where the second synchronization reference signal density is used to configure a synchronization reference signal of the terminal.

18. A network side device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the signal configuration method according to any one of claims 1 to 7 are implemented.

19. A terminal, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the signal configuration method according to any one of claims 8 to 13 are implemented.

20. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the signal configuration method according to any one of claims 1 to 7; or, when executed by a processor, implements the steps of the signal configuration method according to any one of claims 8 to 13.

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