Communication method, apparatus and device, and computer readable storage medium

Abstract

The invention provides a communication method, apparatus and device, and a computer readable storage medium. The method comprises the steps of sending a first synchronization signal block corresponding to a downlink common control channel at a first frequency domain position of a downlink carrier bandwidth; and sending a second synchronization signal block corresponding to a downlink common control channel at a second frequency domain position of the downlink carrier bandwidth at the same time, so that a terminal device resides or accesses a cell based on the second synchronization signal block when the terminal device cannot read the first synchronization signal block, or accesses the cell based on the second synchronization signal block when the terminal device cannot read the second synchronization signal block. Residing or accessing a cell based on the first synchronization signal block; wherein a preset frequency domain high-low difference value exists between the first frequency domain position and the second frequency domain position. Through the method, the anti-interference capability of the common control channel can be effectively improved, and the access problem of the terminal equipment is solved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, apparatus, device and computer-readable storage medium. Background Art

[0002] The fifth generation mobile communication technology (5G) is a new generation of broadband mobile communication technology with the characteristics of high speed, low latency and large connection. Currently, more and more industries choose 5G systems to provide data transmission services, and it is widely used.

[0003] The interference factor of 5G system is the main factor affecting the quality of communication service. The current anti-interference method of 5G system mainly avoids strong interference resource blocks (RB) by scheduling the uplink and downlink of service channels, and divides the bandwidth into multiple parts (Bandwidth Part, BWP), and sends synchronization signal blocks (Synchronization Signal / PBCH Block, SSB) and other control channel resources on each BWP to achieve anti-interference of 5G system. However, the interference of public control channels can easily lead to terminal access problems or reduced service experience, and there are currently few 5G system anti-interference solutions for public control channels. Summary of the invention

[0004] The present application provides a communication method, apparatus, device and computer-readable storage medium, which can be used to solve the interference problem of a common control channel.

[0005] According to one aspect of the present application, a communication method is provided, comprising:

[0006] Sending a first synchronization signal block corresponding to a downlink common control channel at a first frequency domain position of a downlink carrier bandwidth;

[0007] A second synchronization signal block corresponding to a downlink common control channel is simultaneously sent at a second frequency domain position of the downlink carrier bandwidth, so that when the first synchronization signal block cannot be read, the terminal device resides in or accesses a cell based on the second synchronization signal block, or, when the second synchronization signal block cannot be read, resides in or accesses a cell based on the first synchronization signal block; wherein there is a preset frequency domain high and low difference between the first frequency domain position and the second frequency domain position.

[0008] In one embodiment, it further includes:

[0009] According to the uplink interference information of the uplink carrier bandwidth, adjusting the distribution range of the initial part of the bandwidth in the uplink carrier bandwidth and the third frequency domain position corresponding to the uplink common control channel;

[0010] Among them, the distribution range is the bandwidth range of the terminal equipment for uplink communication, and the third frequency domain position is the frequency domain position of the uplink common control channel transmission.

[0011] In one embodiment, it further includes:

[0012] The first synchronization signal block and the second synchronization signal block are respectively allocated corresponding control resource sets and scheduling blocks, so that the terminal device synchronously receives the first synchronization signal block and its corresponding control resource set and scheduling block, or synchronously receives the control resource set and scheduling block corresponding to the second synchronization signal block.

[0013] In one embodiment, it further includes:

[0014] Access-related messages are sent at the first frequency domain position and the second frequency domain position respectively, and the access-related messages include access messages in a non-contention random access process or an access message in a contention random access process, so that after the terminal device receives the access-related messages at the first frequency domain position or the second frequency domain position, it connects to the network based on the access-related messages.

[0015] In one implementation, before adjusting the distribution range of the initial partial bandwidth and the third frequency domain position corresponding to the uplink common control channel according to the uplink interference information of the uplink carrier bandwidth, the method further includes:

[0016] When a cell is established, the initial partial bandwidth and the third frequency domain position corresponding to the uplink common channel are determined according to the current uplink interference level;

[0017] After the cell is established, dynamic detection of the uplink interference level is performed according to a preset period to detect interference information of the uplink carrier bandwidth.

[0018] In one implementation, adjusting the distribution range of the initial bandwidth portion includes:

[0019] In the time division duplex communication mode, the distribution range of the initial partial bandwidth is adjusted based on the downlink carrier bandwidth so that the central frequencies of the initial partial bandwidth corresponding to the uplink carrier bandwidth and the initial partial bandwidth corresponding to the downlink carrier bandwidth are aligned.

[0020] In one implementation, the first frequency domain position is located at a high frequency domain end of the downlink carrier bandwidth, and the second frequency domain position is located at a low frequency domain end of the downlink carrier bandwidth.

[0021] According to a second aspect of the present application, a communication device is provided, including:

[0022] A downlink anti-interference module, which is configured to send a first synchronization signal block corresponding to a downlink common control channel at a first frequency domain position of a downlink carrier bandwidth; and simultaneously send a second synchronization signal block corresponding to a downlink common control channel at a second frequency domain position of the downlink carrier bandwidth, so that when the terminal device cannot read the first synchronization signal block, it resides in or accesses a cell based on the second synchronization signal block, or, when the terminal device cannot read the second synchronization signal block, it resides in or accesses a cell based on the first synchronization signal block; wherein there is a preset frequency domain high and low difference between the first frequency domain position and the second frequency domain position.

[0023] According to a third aspect of the present application, there is provided an electronic device, comprising: a memory and a processor;

[0024] The memory stores computer-executable instructions;

[0025] The processor executes the computer-executable instructions stored in the memory, so that the electronic device performs the communication method.

[0026] According to a fourth aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to implement the communication method when executed by a processor.

[0027] The communication method, apparatus, device and computer-readable storage medium provided in the present application send a first synchronization signal block corresponding to a downlink common control channel at a first frequency domain position of a downlink carrier bandwidth; and simultaneously send a second synchronization signal block corresponding to a downlink common control channel at a second frequency domain position of the downlink carrier bandwidth, so that when the terminal device cannot read the first synchronization signal block, it resides in or accesses a cell based on the second synchronization signal block, or, when the terminal device cannot read the second synchronization signal block, it resides in or accesses a cell based on the first synchronization signal block; wherein there is a preset frequency domain high and low difference between the first frequency domain position and the second frequency domain position. In this process, by sending the first synchronization signal block and the second synchronization signal block respectively at two frequency domain positions with a frequency domain high and low difference, when the quality of the synchronization signal block initially received by the terminal device deteriorates, causing the terminal device to be unable to demodulate, the terminal device can search for another available synchronization signal block in the carrier bandwidth again, thereby improving the anti-interference capability of the downlink common control channel and successfully residing in or accessing a cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0029] Figure 1 A possible network architecture diagram provided for an embodiment of the present application;

[0030] Figure 2 A flow chart of a communication method provided in an embodiment of the present application;

[0031] Figure 3 for Figure 2 Schematic diagram of downlink carrier bandwidth;

[0032] Figure 4 A flowchart of another communication method provided in an embodiment of the present application;

[0033] Figure 5 for Figure 4 Schematic diagram of uplink carrier bandwidth (I)

[0034] Figure 6 for Figure 4 Schematic diagram of uplink carrier bandwidth (part 2);

[0035] Figure 7 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0036] Figure 8 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application.

[0037] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0039] The embodiments of the present application are explained below in conjunction with application scenarios. The communication method provided in the embodiments of the present application can be applied to wireless communication systems. It should be noted that the wireless communication systems mentioned in the embodiments of the present application include but are not limited to: Narrow Band-Internet of Things (NB-IoT), Global System for Mobile Communications (GSM), Enhanced Data rate for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access 2000 (CDMA2000), Time Division-Synchronization Code Division Multiple Access (TD-SCDMA), Long Term Evolution (LTE) and 5G (communication) systems.

[0040] Figure 1 The following shows a possible network architecture for applying the embodiment of the present application to a 5G system. Figure 1 As shown, the 5G system includes a network device 101 and a terminal device 102.

[0041] The network device 101 is a device for connecting a terminal to a wireless network, and may be a base station (Base Transceiver Station, BTS) in Global System of Mobile communication (GSM) or Code Division Multiple Access (CDMA), or a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), or an evolved Node B (eNB or eNodeB) in Long Term Evolution (LTE), or a relay station or access point, or a network side device (e.g., base station) in a 5G network, or a network device in a future evolved public land mobile network (PLMN), etc., which is not limited here. This embodiment is illustrated by taking the network device 101 as a base station as an example.

[0042] The terminal device 102 can be a wireless terminal or a wired terminal. The wireless terminal can be a device that provides voice and / or other business data connectivity to users, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (Radio Access Network, referred to as RAN). The wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, Personal Communication Service (PCS) phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA) and other devices. A wireless terminal may also be referred to as a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Station), a mobile station (Mobile Station), a mobile station (Mobile), a remote station (Remote Station), a remote terminal (Remote Terminal), an access terminal (Access Terminal), a user terminal (User Terminal), or a user agent (User Agent), without limitation herein.

[0043] In this possible illustration, the network device 101 and the terminal devices 102A-102F form a communication system. In this communication system, the terminal devices 102A-102F can send uplink data or signals to the network device 101, and the network device 101 needs to receive the uplink data or signals sent by the terminal devices 102A-102F; the network device 101 can send downlink data or signals to the terminal devices 102A-102F, and the terminal devices 102A-102F need to receive the downlink data or signals sent by the network device 101. In addition, the terminal devices 102D-102F can also form a communication system. In this communication system, the network device 101 can send downlink data to the terminal devices 102A, 102B, 102C, 102D, etc.; the terminal device 102D can also send downlink data or signals to the terminal devices 102E and 102F.

[0044] In the related technology, the strong interference RB is mainly avoided by uplink and downlink scheduling of the service channel, and the cell is established or rebuilt by finding the low interference bandwidth. Among them, the 5G system divides multiple BWPs and randomly sends SSB and other control channel resources on each BWP. In the above process, the terminal access problem caused by the interference of the common channel is not considered. The form of randomly sending SSB in the common control channel, when the common control channel interferes, the terminal cannot demodulate SSB, which leads to the inability to access the cell; 5G cells select low-interference cell bandwidth through cell re-establishment, which requires a long service interruption. In addition, the division of multiple BWP resources is prone to increase system overhead and fragmentation of frequency domain resources.

[0045] In this embodiment, in order to reduce the interference of the common control channel, the anti-interference capability of the downlink common control channel is improved by sending SSB\CORESET 0\SIB1\MSG2\MSG4 at the high and low ends of the carrier bandwidth frequency domain at the same time. The researchers of the technical solution of this application found that the probability of interference at the high and low ends of the frequency domain is low. If the frequency diversity gain is obtained by sending SSB at the high and low ends of the frequency domain at the same time; the terminal device can read the SSB, indicating that the interference level of the frequency domain position of the SSB is low; when the signal quality of the SSB deteriorates and the terminal device cannot demodulate, the terminal device can search for another available SSB in the carrier bandwidth again and re-access the cell, thereby solving the terminal access problem caused by the interference problem of the downlink common control channel, and can solve the problem of introducing a longer service interruption by selecting a low-interference cell bandwidth through cell re-establishment, and at the same time, there is no need to divide multiple BWP resources, thereby solving the problem of increased system overhead and fragmentation of frequency domain resources.

[0046] Those skilled in the art can understand that the synchronization signal block SSB is the basis for realizing cell search. The synchronization signal includes two parts, PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal). PSS / SSS and PBCH (Physical Broadcast Channel) together are called the synchronization signal block SSB. CORESET 0 is a special control information resource set (control-resource set, CORESET), which is used to schedule the system information block (System Information Block Type 1, SIB1), also known as the scheduling block. CORESET 0 is scheduled before the establishment of the radio resource control (Radio Resource Control, RRC), which is determined by some other predefined parameters. Among them, CORESET consists of multiple RBs in the frequency domain and 1 / 2 / 3 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols in the time domain. SIB1 carries relevant information on whether the terminal device is allowed to access the cell and defines the scheduling of other system information; in addition, it also provides radio resource configuration information shared by all UEs and prohibition information required for unified access control. Access message (Message2\Message4, MSG2\MSG4), when the terminal device tries to connect to the network, it sends a connection request to the base station. After receiving the connection request, the base station sends a Message2 to the mobile device, which contains necessary access-related information, such as the base station ID, network configuration information, etc. After receiving Message2, the mobile device will perform the next connection operation based on the information therein. Msg2 is one of the key steps for the terminal device to connect to the network. MSG4 is used for dispute resolution, and this message is equally important when performing competitive random access.

[0047] The above briefly describes the application scenario. The following takes the network device in the above application scenario as the execution subject, and describes in detail the technical solution of the present application and how the technical solution of the present application solves the above technical problems in combination with the drawings and specific embodiments. It should be noted that these specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0048] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0049] Please refer to Figure 2 , Figure 2 A flow chart of a communication method provided in an embodiment of the present application, the method comprising:

[0050] Step S201: Send a first synchronization signal block corresponding to a downlink common control channel at a first frequency domain position of a downlink carrier bandwidth;

[0051] Step S202: simultaneously send a second synchronization signal block corresponding to the downlink common control channel at the second frequency domain position of the downlink carrier bandwidth, so that the terminal device can reside in or access the cell based on the second synchronization signal block when the first synchronization signal block cannot be read, or can reside in or access the cell based on the first synchronization signal block when the second synchronization signal block cannot be read; wherein there is a preset frequency domain high and low difference between the first frequency domain position and the second frequency domain position.

[0052] Those skilled in the art will understand that the physical downlink control channel (PDCCH) refers to the physical downlink control channel, which carries scheduling and other control information, including transmission format, resource allocation, uplink scheduling permission, power control, and uplink retransmission information. Once the downlink public control information is interfered with, the terminal device will not be able to receive system messages, thereby affecting the access and residence of the terminal device.

[0053] In the related technology, the interference problem of the service channel is mainly dealt with, while the interference problem of the public control channel is ignored. When sending the synchronization signal block SSB, the network side usually sends an SSB randomly. If the SSB is sent at the interference position, the terminal device will not be able to receive the SSB or demodulate the SSB, which will cause the terminal device to fail to access or stay in the cell, thereby affecting the overall operation of the communication system.

[0054] In this embodiment, by respectively sending the first synchronization signal block SSB_a and the second synchronization signal block SSB_b at two frequency domain positions with a high and low frequency domain difference, the synchronization signal blocks are respectively sent at two positions with a high and low frequency domain difference, and the interference conditions at different high and low frequency domain positions are also different. When the quality of the SSB signal initially received by the terminal deteriorates, resulting in the terminal device being unable to demodulate, the terminal device can re-search for another available SSB in the carrier bandwidth, thereby improving the anti-interference capability of the PDCCH, so that the terminal device can correctly receive the downlink common control channel PDCCH according to the received SSB, and reside in or access the cell.

[0055] In this embodiment, the downlink carrier bandwidth is the carrier bandwidth used for downlink. The downlink carrier bandwidth and the uplink carrier bandwidth described below are unified carrier bandwidths, or they may be two separately determined carrier bandwidths, which is not specifically limited in this embodiment.

[0056] In this embodiment, the information indicated in the first synchronization signal block and the second synchronization signal block is the same.

[0057] In one implementation, to further improve the anti-interference capability of the downlink common control channel, the first frequency domain position in this embodiment is located at the high frequency domain end of the downlink carrier bandwidth, and the second frequency domain position is located at the low frequency domain end of the downlink carrier bandwidth.

[0058] In this embodiment, considering that the probability of interference at the high and low ends of the frequency domain is low, the frequency diversity gain is obtained by simultaneously sending synchronization signal blocks at the high and low ends of the frequency domain, and the synchronization signal blocks are sent at positions with lower interference, which can effectively resist interference. The high end of the frequency domain and the low end of the frequency domain can be determined according to the intermediate frequency of the downlink carrier bandwidth, and the frequency domain position higher than the intermediate frequency is the high end of the frequency domain, and the frequency domain position lower than the intermediate frequency is the low end of the frequency domain.

[0059] In a more specific example, the synchronization signal block is sent at the highest end and the lowest end of the frequency domain. Specifically, SSB_a is sent at the highest end of the carrier bandwidth and SSB_b is sent at the lowest end. According to the 3GPP protocol, the terminal device selects an SSB that can be successfully read, and resides in or accesses the cell according to the relevant information indicated by the SSB. The fact that the terminal device can read the SSB indicates that the interference level of the frequency domain position of the SSB is low.

[0060] In one implementation, in order to further improve the anti-interference of the downlink control channel, the method may further include the following steps:

[0061] The first synchronization signal block and the second synchronization signal block are respectively allocated corresponding control resource sets and scheduling blocks, so that the terminal device synchronously receives the first synchronization signal block and its corresponding control resource set and scheduling block, or synchronously receives the control resource set and scheduling block corresponding to the second synchronization signal block.

[0062] In this embodiment, the control resource set is CORESET0, and the scheduling block is SIB1. By allocating corresponding CORESET0 and SIB1 to each SSB, binding is achieved between the SSB and its corresponding CORESET0 and SIB1. The terminal device can synchronously receive the corresponding information to further reduce the interference of the downlink public control channel.

[0063] In one implementation, considering that even if the terminal device can read the SSB, if the access-related message cannot be received, the terminal still cannot successfully access or reside in the cell. To this end, this embodiment further improves the anti-interference capability of the downlink control channel by sending access-related messages at different frequency domain positions. Specifically, this embodiment may further include the following steps:

[0064] An access-related message is sent at the first frequency domain position and the second frequency domain position respectively, so that after the terminal device receives the access-related message at the first frequency domain position or the second frequency domain position, it connects to the network based on the access-related message.

[0065] Those skilled in the art can understand that when a terminal device attempts to connect to a network, it sends a connection request to the base station. After receiving the connection request, the base station sends a Message2 to the mobile device, which contains necessary access-related information, such as the base station ID, network configuration information, etc. After receiving Message2, the mobile device will perform the next connection operation based on the information therein. Msg2 is one of the key steps for the terminal device to connect to the network. MSG4 is used for dispute resolution, and this message is equally important when competing for random access.

[0066] For the initial random access of the terminal device, even if the initial DL BWP (that is, the downlink carrier bandwidth) is configured in SIB1, the scheduling and transmission of MSG2 / MSG4 are still performed within the bandwidth range of CORESET 0. In order to avoid the terminal access problem caused by the terminal device not being able to receive MSG2 / MSG4 due to interference problems, this embodiment repeatedly sends access-related messages at the first frequency domain position and the second frequency domain position. Specifically, MSG2 and MSG4 sent by the cell are repeatedly sent once in the time domain, and the frequency domain positions of the two transmissions are different. For example, the frequency domain position of MSG2 sent in the n subframe is the first frequency domain range indicated by CORESET0 of SSB_a, and the frequency domain position of MSG2 sent in the n+1 subframe is the second frequency domain range indicated by CORESET0 of SSB_b.

[0067] In a specific example, the allocation of the downlink control channel is combined with Figure 3 As shown, SSB\CORESET 0\SIB1\MSG2\MSG4 are sent at the highest end of the frequency domain of the downlink carrier bandwidth, and SSB\CORESET 0\SIB1\MSG2\MSG4 are sent at the lowest end of the downlink carrier bandwidth to improve the anti-interference capability of the downlink common control channel.

[0068] Please refer to Figure 4 , Figure 4 A flowchart of another communication method provided in an embodiment of the present application, in addition to proposing an anti-interference method for a downlink common control channel, this embodiment also proposes an anti-interference method for an uplink, so as to further improve the anti-interference capability of the common control channel. Specifically, on the basis of the above embodiment, in addition to step S201 and step S202, the following step S401 is also included.

[0069] Step S401: adjusting the distribution range of the initial bandwidth in the uplink carrier bandwidth and the third frequency domain position corresponding to the uplink common control channel according to the uplink interference information of the uplink carrier bandwidth;

[0070] Among them, the distribution range is the bandwidth range of the terminal equipment for uplink communication, and the third frequency domain position is the frequency domain position of the uplink common control channel transmission.

[0071] Among them, the uplink common control channel (Physical Uplink Control Channel, PUCCH), also known as the physical uplink control channel, is used to carry scheduling request and other information to enable terminal devices to access cells and stay in cells.

[0072] It can be understood by those skilled in the art that uplink interference information can be detected, for example, by using a measurement report to detect uplink interference information. This embodiment combines the interference information of the uplink carrier bandwidth to dynamically adjust the distribution range of the initial partial bandwidth and the third frequency domain position corresponding to the uplink common control channel, wherein the initial partial bandwidth is the uplink initial partial bandwidth initial uplink BWP.

[0073] In one implementation, in addition to adjusting the frequency domain position of the uplink common control channel transmission, this embodiment can also adjust the frequency domain position of the physical random access channel (PRACH) to further improve the anti-interference capability.

[0074] Combination Figure 5 and Figure 6 As shown, Figure 5 To adjust the distribution range of the initial bandwidth and the uplink common control channel, Figure 6 The distribution range of the initial partial bandwidth and the uplink common control channel after adjustment according to the uplink interference information can be seen from the figure that the distribution range changes from area 1 to area 2, and the frequency domain position of the uplink common control channel also changes, where the shaded parts at both ends of the uplink common control channel interfere with the location. In this way, the uplink common control channel can effectively avoid the interference location, thereby improving the uplink anti-interference capability. It should be noted that Figure 5 and Figure 6 There is no example of adjustment of the PRACH frequency domain position, which means that the interference at the corresponding frequency domain position is small.

[0075] Furthermore, to improve the user experience, the user can also select the uplink anti-interference and / or downlink anti-interference of the public control channel according to actual needs. The network device can determine whether an uplink anti-interference request and / or a downlink anti-interference request is received. If a downlink anti-interference request is received, only the above steps S201 and S202 can be executed to implement the anti-interference steps of the downlink public control channel. If an uplink anti-interference request and a downlink anti-interference request are received, the technical solution provided in this embodiment is executed. If only an uplink anti-interference request is received, the above steps S201 and S202 can be skipped and step S401 can be directly executed to implement the anti-interference steps of the uplink public control channel, so that the user can flexibly select the anti-interference method of the public control channel.

[0076] Furthermore, before the above step S401 adjusts the distribution range of the initial bandwidth portion and the third frequency domain position corresponding to the uplink common control channel according to the uplink interference information of the uplink carrier bandwidth, the following steps may also be included:

[0077] When a cell is established, the initial partial bandwidth and the third frequency domain position corresponding to the uplink common channel are determined according to the current uplink interference level;

[0078] After the cell is established, dynamic detection of the uplink interference level is performed according to a preset period to detect interference information of the uplink carrier bandwidth.

[0079] In this embodiment, when the base station establishes a cell, it determines the time-frequency domain positions of the initial BWP and PRACH according to the actual uplink interference level and broadcasts them in SIB1. All the contents indicated in the two SIB1s are the same. After the cell is established, the base station performs uplink interference detection on a periodic basis, and dynamically adjusts the distribution range of the initial BWP and the frequency domain positions of the PUCCH and PRACH according to the uplink interference noise level to avoid interference. The adjusted initial BWP, PUCCH and PRACH frequency domain resources can be indicated to the terminal through SIB1.

[0080] In one possible implementation, the means for detecting the uplink interference level may adopt existing technologies, such as performing uplink anti-interference in a cell measurement manner. This embodiment does not specifically limit the uplink anti-interference detection process.

[0081] Furthermore, the adjustment of the distribution range of the initial bandwidth in step S401 may include the following steps:

[0082] In the time division duplex communication mode, the distribution range of the initial partial bandwidth is adjusted based on the downlink carrier bandwidth so that the central frequencies of the initial partial bandwidth corresponding to the uplink carrier bandwidth and the initial partial bandwidth corresponding to the downlink carrier bandwidth are aligned.

[0083] Time Division Duplex (TDD) is a duplex mode of a communication system, which is used to separate receiving and transmitting channels in mobile communication systems. According to the 3GPP protocol requirements, the center frequencies of the downlink (partial) carrier bandwidth DL BWP and the uplink (partial) carrier bandwidth UL BWP must be aligned. Therefore, when performing dynamic adjustment of the initial uplink BWP, this embodiment aligns the center frequencies between the initial partial bandwidth corresponding to the uplink carrier bandwidth and the initial partial bandwidth corresponding to the downlink carrier bandwidth to meet the communication requirements of time division duplex. In other implementations, the downlink carrier bandwidth can also be adjusted to meet the time division duplex mode, which will not be described in detail here.

[0084] It is understandable that if the communication mode is frequency division duplex (FDD), there is no requirement for frequency alignment, and the adjustment of the (uplink) initial partial bandwidth does not need to consider the initial partial bandwidth corresponding to the downlink carrier bandwidth. In this embodiment, the initial partial bandwidth initialdownlink BWP corresponding to the downlink carrier bandwidth can be the downlink carrier bandwidth.

[0085] In this embodiment, according to the interference of uplink PUCCH and PRACH frequency domain resources, the frequency domain position is dynamically adjusted to effectively avoid interference. In addition, based on the above-mentioned anti-interference method of the uplink / downlink common control channel, the (uplink / downlink) Initial BWP initial configuration can be (uplink / downlink) full bandwidth, and the full bandwidth is also the uplink / downlink carrier bandwidth. The working bandwidth of all terminal devices is the Initial BWP, and the downlink control channel and the uplink control channel are allocated at both ends of the frequency domain, without the need to divide multiple BWP resources to cause excessive system overhead and frequency domain resource fragmentation.

[0086] In addition, after communicating the anti-interference of the uplink / downlink common control channel based on the technical solution of the embodiment of the present application, the terminal accesses the network. After the terminal enters the network and enters the connected state, the interference avoidance of the uplink / downlink service channels can be performed according to the existing technology to improve the quality of communication services.

[0087] Please refer to Figure 7 , Figure 7 A schematic diagram of the structure of a communication device provided in an embodiment of the present application, the device includes a downlink anti-interference module 71,

[0088] A downlink anti-interference module 71 is configured to send a first synchronization signal block corresponding to a downlink common control channel at a first frequency domain position of a downlink carrier bandwidth; and simultaneously send a second synchronization signal block corresponding to a downlink common control channel at a second frequency domain position of the downlink carrier bandwidth, so that when the terminal device cannot read the first synchronization signal block, it resides in or accesses a cell based on the second synchronization signal block, or, when the terminal device cannot read the second synchronization signal block, it resides in or accesses a cell based on the first synchronization signal block; wherein there is a preset frequency domain high and low difference between the first frequency domain position and the second frequency domain position.

[0089] In one embodiment, the device further comprises:

[0090] An uplink anti-interference module 72, which is configured to adjust the distribution range of the initial part of the bandwidth in the uplink carrier bandwidth and the third frequency domain position corresponding to the uplink common control channel according to the uplink interference information of the uplink carrier bandwidth;

[0091] Among them, the distribution range is the bandwidth range of the terminal equipment for uplink communication, and the third frequency domain position is the frequency domain position of the uplink common control channel transmission.

[0092] In one embodiment, the downlink anti-interference module 71 is also configured to allocate corresponding control resource sets and scheduling blocks to the first synchronization signal block and the second synchronization signal block, respectively, so that the terminal device synchronously receives the first synchronization signal block and its corresponding control resource set and scheduling block, or synchronously receives the control resource set and scheduling block corresponding to the second synchronization signal block.

[0093] In one embodiment, the downlink anti-interference module 71 is also configured to send access-related messages at the first frequency domain position and the second frequency domain position, respectively, and the access-related messages include access messages in a non-contention random access process, or access messages in a contention random access process, so that after the terminal device receives the access-related messages at the first frequency domain position or the second frequency domain position, it connects to the network based on the access-related messages.

[0094] In one embodiment, the uplink anti-interference module 72 is also configured to determine, when a cell is established, the initial partial bandwidth and the third frequency domain position corresponding to the uplink common channel according to the current uplink interference level; and after the cell is established, dynamically detect the uplink interference level according to a preset period to detect interference information of the uplink carrier bandwidth.

[0095] In one embodiment, the adjusting the distribution range of the initial part of the bandwidth includes: in a time division duplex communication mode, adjusting the distribution range of the initial part of the bandwidth based on the downlink carrier bandwidth so that the center frequencies of the initial part of the bandwidth corresponding to the uplink carrier bandwidth and the initial part of the bandwidth corresponding to the downlink carrier bandwidth are aligned.

[0096] In one implementation, the first frequency domain position is located at a high frequency domain end of the downlink carrier bandwidth, and the second frequency domain position is located at a low frequency domain end of the downlink carrier bandwidth.

[0097] It should be noted here that the above-mentioned device provided in the present application can correspondingly implement all the method steps implemented by the server in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0098] The present application also provides an electronic device, such as Figure 8 As shown, it includes: a transceiver 81, a processor 82 and a memory 83;

[0099] The processor 82 executes the computer execution instructions stored in the memory 83, so that the server executes the solution in the above embodiment. The processor 82 can be a general-purpose processor, including a central processing unit CPU, a network processor (NP), etc.; it can also be a digital signal processor DSP, an application-specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0100] The memory 83 is connected to the processor 82 via a system bus and completes communication between them. The memory 83 is used to store computer program instructions.

[0101] The transceiver 81 may be used to implement the reception and transmission of communication data, such as receiving a call request for an algorithm service.

[0102] The system bus can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The system bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The transceiver is used to realize the communication between the database access device and other computers (such as clients, read-write libraries, and read-only libraries). The memory may include random access memory (RAM) and may also include non-volatile memory.

[0103] It should be noted here that the above-mentioned server provided in the present application can correspondingly implement all the method steps implemented by the server in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0104] The embodiment of the present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. The computer-executable instructions are used to implement the algorithm calling method when they are executed by a processor.

[0105] It should be noted here that the above-mentioned computer-readable storage medium provided in the present application can correspondingly implement all the method steps implemented by the server in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0106] The embodiment of the present application also provides a computer program product, which includes a computer program code. When the computer program code runs on a computer, the computer executes an algorithm calling method.

[0107] It should be noted here that the above-mentioned computer program product provided by the present application can correspondingly implement all the method steps implemented by the server in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0108] The embodiment of the present application also provides a chip, including a memory and a processor, the memory is used to store computer programs, the processor is used to call and run the computer program from the memory, and the execution algorithm calling method.

[0109] It should be noted here that the above-mentioned chip provided in the present application can correspondingly implement all the method steps implemented by the server in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0110] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0111] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to implement the solution of this embodiment.

[0112] In addition, each functional module in each embodiment of the present application can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit. The above-mentioned module-composed unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

[0113] The above-mentioned integrated module implemented in the form of a software function module can be stored in a computer-readable storage medium. The above-mentioned software function module is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform some steps of the methods of various embodiments of the present application.

[0114] It should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the invention may be directly implemented as being executed by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.

[0115] The memory may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk memory, and may also be a USB flash drive, a mobile hard disk, a read-only memory, a magnetic disk or an optical disk, etc.

[0116] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0117] The above storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The storage medium can be any available medium that can be accessed by a general or special purpose computer.

[0118] An exemplary storage medium is coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the storage medium can also exist as discrete components in an electronic control unit or a main control device.

[0119] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0120] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0121] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A communication method, characterized in that: include: Sending a first synchronization signal block corresponding to a downlink common control channel at a first frequency domain position of a downlink carrier bandwidth; A second synchronization signal block corresponding to a downlink common control channel is simultaneously sent at a second frequency domain position of the downlink carrier bandwidth, so that when the first synchronization signal block cannot be read, the terminal device resides in or accesses a cell based on the second synchronization signal block, or, when the second synchronization signal block cannot be read, resides in or accesses a cell based on the first synchronization signal block; wherein there is a preset frequency domain high and low difference between the first frequency domain position and the second frequency domain position.

2. The method according to claim 1, characterized in that Also includes: According to the uplink interference information of the uplink carrier bandwidth, adjusting the distribution range of the initial part of the bandwidth in the uplink carrier bandwidth and the third frequency domain position corresponding to the uplink common control channel; Among them, the distribution range is the bandwidth range of the terminal equipment for uplink communication, and the third frequency domain position is the frequency domain position of the uplink common control channel transmission.

3. The method according to claim 1, characterized in that Also includes: The first synchronization signal block and the second synchronization signal block are respectively allocated corresponding control resource sets and scheduling blocks, so that the terminal device synchronously receives the first synchronization signal block and its corresponding control resource set and scheduling block, or synchronously receives the control resource set and scheduling block corresponding to the second synchronization signal block.

4. The method according to claim 1, characterized in that: Also includes: Access-related messages are sent at the first frequency domain position and the second frequency domain position respectively, and the access-related messages include access messages in a non-contention random access process or an access message in a contention random access process, so that after the terminal device receives the access-related messages at the first frequency domain position or the second frequency domain position, it connects to the network based on the access-related messages.

5. The method according to claim 2, characterized in that: Before adjusting the distribution range of the initial bandwidth portion and the third frequency domain position corresponding to the uplink common control channel according to the uplink interference information of the uplink carrier bandwidth, the method further includes: When a cell is established, the initial partial bandwidth and the third frequency domain position corresponding to the uplink common channel are determined according to the current uplink interference level; After the cell is established, dynamic detection of the uplink interference level is performed according to a preset period to detect interference information of the uplink carrier bandwidth.

6. The method according to claim 2, characterized in that The adjusting the distribution range of the initial bandwidth portion includes: In the time division duplex communication mode, the distribution range of the initial partial bandwidth is adjusted based on the downlink carrier bandwidth so that the central frequencies of the initial partial bandwidth corresponding to the uplink carrier bandwidth and the initial partial bandwidth corresponding to the downlink carrier bandwidth are aligned.

7. The method according to any one of claims 1 to 6, characterized in that: The first frequency domain position is located at a high frequency domain end of the downlink carrier bandwidth, and the second frequency domain position is located at a low frequency domain end of the downlink carrier bandwidth.

8. A communication device, characterized in that: include: A downlink anti-interference module, which is configured to send a first synchronization signal block corresponding to a downlink common control channel at a first frequency domain position of a downlink carrier bandwidth; and simultaneously send a second synchronization signal block corresponding to a downlink common control channel at a second frequency domain position of the downlink carrier bandwidth, so that when the terminal device cannot read the first synchronization signal block, it resides in or accesses a cell based on the second synchronization signal block, or, when the terminal device cannot read the second synchronization signal block, it resides in or accesses a cell based on the first synchronization signal block; wherein there is a preset frequency domain high and low difference between the first frequency domain position and the second frequency domain position.

9. An electronic device, characterized in that: include: Memory and processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the electronic device performs the communication method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the communication method according to any one of claims 1 to 7.

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