Communication method, device, equipment and storage medium

Abstract

The embodiments of the present application disclose a communication method, apparatus, device, and storage medium, the method comprising: determining a first cell in a second communication system, the first cell being a cell that performs dynamic spectrum sharing with the first communication system; determining rate matching information of a cell reference signal CRS corresponding to the first cell and cell information of a second cell, the second cell being a neighboring cell of the first cell; determining a first resource unit RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determining a second RE occupied by the CRS corresponding to the second cell based on the cell information; avoiding the first RE and the second RE when performing physical downlink shared channel PDSCH mapping, and communicating with a terminal device in the first communication system based on the PDSCH obtained by channel mapping. By adopting the embodiments of the present application, the performance and stability of each communication system during spectrum sharing can be improved, and the applicability is high.

Description

Technical Field

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

[0002] With the continuous development of communication technology, the new generation of communication systems often supports a larger spectrum range and can be directly deployed in frequency bands where there are no other communication systems. However, in the early stages of the development of the new generation of communication systems, it is often hoped that the new generation of communication systems and other communication systems will be deployed in the same frequency band, that is, the bandwidths of different communication systems occupy part of the entire bandwidth, or the frequency bands of the two completely overlap or partially overlap. For example, in the early stages of the development of the 5G New Radio (NR) system, it is hoped that the NR system and the long term evolution (LTE) system will be deployed in the same frequency band, where the LTE system bandwidth can occupy part of the entire bandwidth (such as LTE system occupies 20M and NR system occupies 40M), or the frequency bands of the LTE system and the NR system completely overlap (such as LTE system occupies 20M and NR system occupies 20M).

[0003] Since the networks and equipment of the old generation of communication systems are relatively mature, when using the spectrum resources of the old generation of communication systems for dynamic spectrum sharing (DSS), the new generation of communication systems often considers the resource element (RE) position corresponding to the CRS cell reference signal (CRS) of the old generation of communication systems for rate matching, thereby fully utilizing the shared spectrum resources. However, in actual applications, although the new generation of communication systems try to avoid the RE corresponding to the CRS of the cells performing dynamic spectrum sharing, the new generation of communication systems and the old generation of communication systems still interfere with each other in the reused resources, thereby increasing the bit error rate of the physical downlink shared channel (PDSCH) mapping during dynamic spectrum sharing, affecting the overall communication network performance.

[0004] Therefore, when multiple communication networks coexist and perform dynamic spectrum sharing, how to improve the system performance of each communication system becomes an urgent problem to be solved. Summary of the Invention

[0005] The embodiments of the present application provide a communication method, apparatus, device, and storage medium, which can improve the performance and stability of each communication system during dynamic spectrum sharing and have high applicability.

[0006] In a first aspect, an embodiment of the present application provides a communication method, applied to a network device in a first communication system, the method comprising:

[0007] Determining a first cell in a second communication system, where the first cell is a cell performing dynamic spectrum sharing with the first communication system;

[0008] Determine rate matching information of a cell reference signal (CRS) corresponding to the first cell and cell information of a second cell, where the second cell is a neighboring cell of the first cell;

[0009] Determine a first resource unit RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determine a second resource unit RE occupied by the CRS corresponding to the second cell based on the cell information;

[0010] The first RE and the second RE are avoided when performing physical downlink shared channel PDSCH mapping, so as to communicate with the terminal device in the first communication system based on the PDSCH obtained based on the channel mapping.

[0011] In a second aspect, an embodiment of the present application provides a communication method, applied to a terminal device in a first communication system, the method comprising:

[0012] receiving configuration information sent by a network device in the first communication system, the configuration information including rate matching information of a CRS corresponding to a first cell and cell information of a second cell, where the first cell is a cell in the second communication system that performs dynamic spectrum sharing with the first communication system, and the second cell is a neighboring cell of the first cell;

[0013] Determine a first RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determine a second RE occupied by the CRS corresponding to the second cell based on the cell information;

[0014] The first RE and the second RE are determined as REs to be avoided by the network device when performing PDSCH mapping, so as to communicate with the network device based on the PDSCH obtained based on channel mapping.

[0015] In a third aspect, an embodiment of the present application provides a communication device, the device comprising:

[0016] A first determining unit is configured to determine a first cell in a second communication system, where the first cell is a cell that performs dynamic spectrum sharing with the first communication system;

[0017] A second determining unit is configured to determine rate matching information of a cell reference signal CRS corresponding to the first cell and cell information of a second cell, where the second cell is a neighboring cell of the first cell;

[0018] a third determining unit, configured to determine a first resource element RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determine a second resource element RE occupied by the CRS corresponding to the second cell based on the cell information;

[0019] The first communication unit is used to avoid the first RE and the second RE when performing physical downlink shared channel PDSCH mapping, so as to communicate with the terminal device in the first communication system based on the PDSCH obtained by channel mapping.

[0020] In a fourth aspect, an embodiment of the present application provides a communication device, the device comprising:

[0021] a receiving unit, configured to receive configuration information sent by a network device in the first communication system, the configuration information including rate matching information of a CRS corresponding to a first cell and cell information of a second cell, the first cell being a cell in the second communication system that performs dynamic spectrum sharing with the first communication system, and the second cell being a neighboring cell of the first cell;

[0022] A fourth determining unit is configured to determine a first RE occupied by a CRS corresponding to the first cell based on the rate matching information, and determine a second RE occupied by a CRS corresponding to the second cell based on the cell information;

[0023] The second communication unit is configured to determine the first RE and the second RE as REs to be avoided by the network device when performing PDSCH mapping, and to communicate with the network device based on the PDSCH obtained by channel mapping.

[0024] In a fifth aspect, an embodiment of the present application provides a network device, including a memory, a transceiver, and a processor:

[0025] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the above-mentioned processor; and a processor for reading the computer program in the above-mentioned memory and executing the method provided by the above-mentioned first aspect.

[0026] In a sixth aspect, an embodiment of the present application provides a terminal device, including a memory, a transceiver, and a processor:

[0027] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the above-mentioned processor; and a processor for reading the computer program in the above-mentioned memory and executing the method provided by the above-mentioned second aspect.

[0028] In the seventh aspect, an embodiment of the present application provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method provided in the first aspect and / or the second aspect.

[0029] In an embodiment of the present application, the network device and the terminal device in the first communication system determine the first RE occupied by the CRS corresponding to the first cell and the second RE occupied by the CRS corresponding to the neighboring cell based on the rate matching information corresponding to the first cell and the cell information of the neighboring cell of the first cell, so that the above-mentioned first RE and second RE can be avoided during PDSCH mapping. Based on this, not only can the interference of the CRS corresponding to the first cell on the PDSCH mapping be reduced, but also the interference of the CRS corresponding to the neighboring cell of the first cell on the PDSCH mapping can be reduced, thereby further improving the accuracy of PDSCH mapping during dynamic spectrum sharing, improving the system performance of each communication system, and having high applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a flow chart of a communication method provided by an embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of a scenario of RE resources provided by an embodiment of the present application;

[0033] Figure 3 This is another schematic diagram of a scenario of RE resources provided by an embodiment of the present application;

[0034] Figure 4 This is another flow chart of the communication method provided in an embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0036] Figure 6 is another structural diagram of a communication device provided in an embodiment of the present application;

[0037] Figure 7 This is a schematic diagram of the structure of the network device provided in the embodiment of the present application;

[0038] Figure 8 It is a structural diagram of the terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] In the embodiments of this application, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0040] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] The embodiments of the present application provide a communication method, apparatus, device, and storage medium, which can improve the performance stability of a communication system and have high applicability.

[0043] Among them, the method and the device are based on the same application concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0044] The communication method provided in the embodiment of the present application can be applicable to scenarios where multiple communication systems coexist. Among them, the system to which the communication method provided in the embodiment of the present application can be applicable can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, an LTE system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G system, and the like. These multiple systems all include terminal equipment and network equipment. The system can also include a core network part, such as an evolved packet system (EPS), and the like.

[0045] Among them, the communication method provided in the embodiment of the present application can be applied to network equipment and terminal equipment in a new generation communication system in which multiple communication systems coexist.

[0046] For the convenience of description, the new generation communication system is referred to as the first communication system, and the old generation communication system is referred to as the second communication system.

[0047] As an example, the first communication system in the embodiment of the present application is a 5GNR system, and the second communication system is an LTE system.

[0048] The terminal device involved in the embodiments of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it can be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present application.

[0049] The network device involved in the embodiments of the present application may be a base station, which may include multiple cells providing services for terminal devices. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface.

[0050] For example, the network device involved in the embodiments of the present application can be a network device (Base Transceiver Station, BTS) in GSM or CDMA, or a network device (NodeB) in WCDMA, or an evolved network device (eNB or e-NodeB) in the LTE system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (HeNB), a relay node, a home base station (femto), a pico base station (pico), etc. It can also be an operation and maintenance (OM) system in the LTE system and the NR system, which is not limited in the embodiments of the present application. In some network structures, the network equipment may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0051] In an embodiment of the present application, the network device and the terminal device can each use one or more antennas for multiple input multiple output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or it can be diversity transmission, precoded transmission, or beamforming transmission, etc.

[0052] See also Figure 1 , Figure 1 This is a flow chart of the communication method provided in an embodiment of the present application. Figure 1 The communication method shown is applied to a network device in a first communication system, and the method may include the following steps:

[0053] Step S11: Determine a first cell in the second communication system, where the first cell is a cell that performs dynamic spectrum sharing with the first communication system.

[0054] In some feasible implementations, after cells in each communication system are activated, network devices in the first communication system and the second communication system may interact with each other to determine frequency band information of the corresponding communication system.

[0055] As an example, the network device in the first communication system may determine the frequency band information of the second communication system.

[0056] In some feasible implementations, the network device in the first communication system may determine a cell in the second communication system that can be used for dynamic spectrum sharing (hereinafter referred to as the first cell for ease of description) based on the frequency band information of the first communication system and the frequency band information of the second communication system.

[0057] The frequency band of the first cell is within the frequency band of both the first communication system and the second communication system.

[0058] As an example, the OM system of the NR system determines whether there is an LTE cell in the second communication system that can perform dynamic spectrum sharing.

[0059] Furthermore, the network device in the first communication system may determine rate matching information of the CRS corresponding to the first cell in response to the presence of a first cell in the second communication system whose frequency band is within the frequency band of the first communication system.

[0060] Step S12: Determine rate matching information of a cell reference signal CRS corresponding to the first cell and cell information of a second cell, where the second cell is a neighboring cell of the first cell.

[0061] As an example, the rate matching information of the CRS corresponding to the first cell includes frequency information, bandwidth information, number of ports and offset information.

[0062] As an example, the OM system of the NR system determines the LTE cell in the second communication system that dynamically shares spectrum with the first communication system, and then determines the frequency information, bandwidth information, number of ports and offset information of the CRS corresponding to the LTE cell.

[0063] Optionally, the network device in the first communication system may obtain rate matching information of the CRS corresponding to the first cell when determining the frequency band information of the second communication system.

[0064] Optionally, the network device in the first communication system may obtain the rate matching information of the CRS corresponding to the first cell from the network device in the second communication system based on a system message or an air interface message.

[0065] As an example, when the OM system of the NR system exchanges frequency band information with the OM system of LTE, it obtains the frequency information, bandwidth information, number of ports and offset information of the CRS corresponding to the LTE cell that can perform dynamic spectrum sharing.

[0066] In some feasible implementations, when the network device in the first communication system obtains the rate matching information of the CRS corresponding to the first cell, it can also obtain the cell information of the neighboring cell of the first cell (hereinafter referred to as the second cell for convenience of description).

[0067] Specifically, the cell information of the second cell includes a physical cell ID (Physical Cell ID, PCI) of the second cell.

[0068] As an example, the OM system of the NR system determines that there is an LTE cell in the LTE system that can perform dynamic spectrum sharing, then determines and obtains the frequency information, bandwidth information, number of ports and offset information of the CRS corresponding to the LTE cell, and determines and obtains the physical cell ID of the neighboring cell of the LTE cell.

[0069] Optionally, the network device in the first communication system may obtain the physical cell ID of the second cell when determining the frequency band information of the second communication system.

[0070] Optionally, the network device in the first communication system may obtain the physical cell ID of the second cell from the network device in the second communication system based on a system message or an air interface message.

[0071] Step S13: Determine a first resource unit RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determine a second resource unit RE occupied by the CRS corresponding to the second cell based on the cell information.

[0072] In some feasible implementations, the network device in the first communication system may determine the RE occupied by the CRS corresponding to the first cell (hereinafter referred to as the first RE for the convenience of description) based on the rate matching information, and determine the second RE occupied by the CRS corresponding to the second cell based on the cell information (hereinafter referred to as the second RE for the convenience of description).

[0073] Optionally, the network device in the first communication system may determine the first RE occupied by the CRS corresponding to the first cell based on rate matching information of the CRS corresponding to the first cell, including frequency information, bandwidth information, number of ports, and offset information.

[0074] As an example, the network device in the first communication system may determine the first RE occupied by the CRS corresponding to the first cell based on rate matching information of the CRS corresponding to the first cell, including frequency information, bandwidth information, number of ports, and offset information.

[0075] Optionally, the network device in the first communication system may determine the second RE occupied by the CRS corresponding to the second cell based on the physical cell ID of the second cell.

[0076] Among them, the network equipment in the first communication system can determine the offset information of the CRS corresponding to the second cell based on the physical cell ID of the second cell, and then determine the second RE occupied by the CRS corresponding to the second cell based on the offset information of the CRS corresponding to the second cell.

[0077] As an example, a network device in the first communication system may calculate the physical cell ID based on a preset calculation method to obtain offset information of the CRS corresponding to the second cell. For example, the network device in the first communication system may determine the offset information of the CRS corresponding to the second cell based on a calculation method of PCI%6, where % represents a modulo operation.

[0078] Step S14: Avoid the first RE and the second RE when performing PDSCH mapping, and communicate with the terminal device in the first communication system based on the PDSCH obtained based on the channel mapping.

[0079] In some feasible implementations, when performing PDSCH mapping, the network device in the first communication system may avoid the first RE occupied by the CRS corresponding to the first cell and the second RE occupied by the CRS corresponding to the second cell.

[0080] Among them, the network equipment in the first communication system can avoid the first RE occupied by the CRS corresponding to the first cell and the second RE occupied by the CRS corresponding to the second cell based on rate matching.

[0081] In an embodiment of the present application, the network equipment in the first communication system avoids the above-mentioned first RE and second RE during PDSCH mapping, which can reduce the interference of the CRS corresponding to the first cell on the PDSCH mapping, and the interference of the CRS corresponding to the second cell on the PDSCH mapping, thereby further reducing the bit error rate of the first communication system multiplexing the spectrum resources of the second communication system, improving the stability of the first communication system and the second communication system when sharing the spectrum, and having high applicability.

[0082] In some feasible implementations, since the first cell is a cell in the second communication system that dynamically shares spectrum with the first communication system, the network equipment in the first communication system needs to perform rate matching in the shared downlink physical resource blocks (PRBs) corresponding to the first communication system and the second communication system.

[0083] Based on this, the network device in the first communication system avoids the first RE and the second RE when performing PDSCH mapping. Specifically, it can avoid the first RE in the shared downlink PRB and the second RE in the shared downlink PRB through rate matching when performing PDSCH mapping.

[0084] Among them, any PRB in the above-mentioned shared downlink PRBs can be used by the first communication system and can also be used by the second communication system.

[0085] The shared downlink PRB is a PRB corresponding to the same frequency band of the first communication system and the second communication system in the first cell.

[0086] Specifically, the network device in the first communication system may determine the shared downlink PRB corresponding to the first communication system and the second communication system based on the rate matching information of the CRS corresponding to the first cell.

[0087] As an example, since the CRS corresponding to the first cell occupies the full bandwidth, the network device in the first communication system can determine the shared downlink PRB corresponding to the first communication system and the second communication system based on the frequency information and bandwidth information of the CRS corresponding to the first cell.

[0088] In an embodiment of the present application, when mapping PDSCH, the network device in the first communication system can avoid the first RE and the second RE in the shared downlink PRB corresponding to the first communication system and the second communication system, and can reduce the interference of the CRS corresponding to the first cell on the PDSCH mapping, and the interference of the CRS corresponding to the second cell on the PDSCH mapping, thereby reducing the bit error rate of the spectrum resources of the second communication system reused by the first communication system and improving the efficiency and accuracy of PDSCH mapping.

[0089] In some feasible implementations, since both the network devices in the first communication system and the network devices in the second communication system can use the above-mentioned shared downlink PRB (for the convenience of description, the PRB corresponding to the above-mentioned shared downlink PRB of the first communication system is referred to as the first PRB below), the network devices in the first communication system can avoid the first RE in the above-mentioned first downlink PRB and the second RE in the above-mentioned first downlink PRB when performing PDSCH mapping. In other words, when the network devices in the first communication system perform PDSCH mapping, the above-mentioned shared downlink PRB corresponds to the first downlink PRB of the first communication system, and when performing PDSCH mapping, the REs occupied by the CRS corresponding to the first cell in the above-mentioned first downlink PRB are avoided by rate matching, and the REs occupied by the CRS corresponding to the second cell in the above-mentioned first downlink PRB are avoided.

[0090] Specifically, the network device in the first communication system can determine the downlink PRB utilization corresponding to the first communication system (for the convenience of description, hereinafter referred to as the first downlink PRB utilization) and the downlink PRB utilization corresponding to the second communication system (for the convenience of description, hereinafter referred to as the second downlink PRB utilization).

[0091] Furthermore, based on the above-mentioned first downlink PRB utilization rate and the above-mentioned second downlink PRB utilization rate, the proportion of the downlink PRB (first downlink PRB) used by the network equipment in the first communication system and the downlink PRB used by the network equipment in the second communication system in the above-mentioned shared downlink PRB can be determined, and then the above-mentioned first downlink PRB can be determined from the above-mentioned shared downlink PRB based on the proportion.

[0092] As an example, the OM system of the NR system determines the range of PRBs used by NR in the shared downlink PRBs based on a certain algorithm according to the downlink PRB utilization corresponding to the NR system and the downlink PRB utilization corresponding to the LTE system.

[0093] Among them, the second downlink PRB utilization rate corresponding to the second communication system can be sent by the network equipment in the second communication system to the network equipment in the first communication system through system messages, configuration signaling, etc., and then the network equipment in the first communication system can determine the second downlink PRB utilization rate corresponding to the second communication system.

[0094] Among them, the specific implementation method of determining the first downlink PRB in the shared downlink PRB based on the first downlink PRB utilization rate and the second downlink PRB utilization rate is not limited in the embodiment of the present application.

[0095] Optionally, the network device in the first communication system and the network device in the second communication system may periodically determine their respective corresponding downlink PRB utilizations. The network device in the first communication system may periodically obtain the first PRB utilization of the first communication system and the second PRB utilization of the second communication system, and then determine the first PRB in the shared downlink PRB.

[0096] As an example, the first communication system is an NR system, the second communication system is an LTE system, the bandwidth of the NR system is 40M, and the bandwidth of the LTE system is 20M. The bandwidth shared by the NR system in the LTE system can be represented by a static table, as shown in Table 1. When the downlink PRB utilization of the LTE system is low and the downlink PRB utilization of the NR system is high, the available downlink PRBs of the LTE system and the available downlink PRBs of the NR system can adopt a ratio of 5:5 or 1:9. At a ratio of 1:9, the downlink PRBs of subframe 0 / 5 of the LTE system start from PRB0 (76) and have a length of 24, and the downlink PRBs of other subframes start from PRB0 (92) and have a length of 8. At a ratio of 5:5, the downlink PRBs of subframe 0 / 5 of the LTE system start from PRB0 (48) and have a length of 52, and the downlink PRBs of other subframes start from PRB0 (48) and have a length of 52. When the downlink PRB utilization of the LTE system is high and the downlink PRB utilization of the NR system is low, the available downlink PRBs of the LTE system and the available downlink PRBs of the NR system can adopt a ratio of 10:0. The downlink PRB of the subframe of the LTE system starts from PRB0 and has a length of 100.

[0097] Based on the ratio of available downlink PRBs in the LTE system to available downlink PRBs in the NR system, the network equipment in the NR system can select the PRBs used by the NR system from the shared downlink PRBs.

[0098] Table 1: Optional downlink PRB table for LTE system when LTE system and NR system share spectrum

[0099] LTE downlink LTE:NR=1:9 state LTE:NR=5:5 state LTE:NR=10:0 state Subframe 0 / 5 PRB0(76) starts, length 24 PRB0(48) starts, length 52 PRB0 starts, length 100 Other subframes PRB0(92) starts, length 8 PRB0(48) starts, length 52 PRB0 starts, length 100

[0100] Among them, the network equipment of the NR system and the LTE system use the same period (such as 100ms) to determine their respective downlink PRB utilization to adapt to the changes of each communication system in different time periods.

[0101] For example, if the NR system bandwidth is 40 Mbps (216 PRBs: 0-215) and the LTE system bandwidth is 20 Mbps (100 PRBs: 0-99), the NR system can share the LTE 20 Mbps system bandwidth, and it can be calculated that the NR system can share 100 PRBs (shared downlink PRBs). If the NR system is relatively idle based on the downlink PRB utilization of the NR and LTE systems, more PRBs can be allocated to NR from the shared downlink PRBs.

[0102] For example, the NR system can use PRBs corresponding to 30-215 (PRBs corresponding to 30-99 are shared by the NR system and the LTE system, and PRBs corresponding to 100-215 are exclusive to the NR system). The 30 PRBs corresponding to 0-29 are the PRBs corresponding to the NR system in the shared PRBs. When performing PDSCH mapping, the NR system needs to avoid the REs corresponding to the LTE system in the PRBs corresponding to 30-99. For example, in the LTE system, the REs occupied by the CRS corresponding to the cell for dynamic spectrum sharing, the REs occupied by the CRS corresponding to the neighboring cell of the cell, and so on.

[0103] In some feasible implementations, the network device in the first communication system may perform rate matching based on rate matching information of the CRS of the first cell and cell information of the second cell.

[0104] As an example, a network device in an NR system may perform rate matching based on the frequency information, bandwidth information, number of ports, and offset information of the CRS corresponding to the first cell, and the offset information of the CRS corresponding to the second cell. The offset information of the CRS corresponding to the second cell may be determined based on the cell information (physical cell ID) of the first cell.

[0105] In some feasible implementations, the network equipment in the first communication system can also avoid REs occupied by other reference signals, physical channels, etc. through rate matching when performing PDSCH mapping, so that the REs corresponding to the PDSCH finally obtained after channel mapping do not conflict with the REs occupied by any other signals and / or channels, thereby further improving the stability of each communication system.

[0106] Among them, the above-mentioned other reference signals include but are not limited to demodulation reference signal (DMRS), primary synchronization signal (PSS), secondary synchronization signal (SSS) and sounding reference signal (SRS), etc., and the above-mentioned physical signals include but are not limited to physical downlink control channel (PDCCH), physical broadcast channel (PBCH), etc., and are not limited here.

[0107] Furthermore, after the network device in the first communication system completes PDSCH mapping based on rate matching, it can communicate with the terminal device in the first communication system based on the PDSCH after channel mapping (PDSCH mapping).

[0108] See also Figure 2 , Figure 2 This is a schematic diagram of a scenario of RE resources provided in an embodiment of the present application. Figure 2 The shared downlink PRB corresponds to the RE corresponding to the CRS of the cell used for spectrum sharing in the LTE system in the first PRB of the NR system, the RE corresponding to the DMRS in the first downlink PRB of the NR system, and the RE corresponding to the PDCCH in the LTE system. The number of ports corresponding to the above CRS is 2 (antenna ports 0 and 1).

[0109] exist Figure 2 In the NR system, the network equipment avoids the REs corresponding to the CRS in the LTE system, the REs corresponding to the PDCCH in the LTE system, and the REs corresponding to the DMRS in the NR system by rate matching when performing PDSCH mapping, so that the REs corresponding to the PDSCH after PDSCH channel mapping and the positions of the above-mentioned other REs in the first downlink PRB do not conflict with each other. However, in this case, due to the presence of the CRS of the neighboring cell in the LTE system, the REs occupied by the CRS of the neighboring cell in the first downlink PRB will generate strong interference with the REs used by the PDSCH of the NR system.

[0110] See also Figure 3 , Figure 3 This is a schematic diagram of a scenario of RE resources provided in an embodiment of the present application. Figure 3 The shared downlink PRB corresponds to the RE corresponding to the CRS of the cell used for spectrum sharing in the LTE system in the first PRB of the NR system, the RE corresponding to the CRS of the neighboring cell of the cell, the RE corresponding to the DMRS in the first downlink PRB of the NR system, and the RE corresponding to the PDCCH in the LTE system. The number of ports corresponding to the above CRS is 2 (antenna ports 0 and 1).

[0111] When performing PDSCH mapping, the network equipment in the NR system not only avoids the RE corresponding to CRS in the LTE system, the RE corresponding to PDCCH in the LTE system, and the RE corresponding to DMRS in the NR system through rate matching, but also avoids the RE corresponding to CRS of the neighboring cell and Figure 2The REs corresponding to the PDSCH in the NR system overlap with the REs, so that when the network equipment in the NR system performs PDSCH mapping, the REs corresponding to the CRS and the REs corresponding to the PDSCH do not conflict with each other through rate matching, thereby improving the demodulation performance of the PDSCH in the NR system, and will not interfere with the cells and neighboring cells used for spectrum sharing in the LTE system, thereby improving the gain of spectrum sharing.

[0112] In an embodiment of the present application, the network device in the first communication system can avoid the first RE and the second RE in the shared downlink PRB corresponding to the RE in the PRB of the first communication system when mapping PDSCH, and can reduce the interference of the CRS corresponding to the first cell on the PDSCH mapping, as well as the interference of the CRS corresponding to the second cell on the PDSCH mapping, thereby reducing the bit error rate of the spectrum resources of the second communication system reused by the first communication system while further reducing the number of REs avoided during PDSCH mapping to improve the efficiency and accuracy of PDSCH mapping.

[0113] See also Figure 4 , Figure 4 This is another flow chart of the communication method provided in an embodiment of the present application. Figure 4 The communication method shown is applied to a network device in a first communication system, and the method may include the following steps:

[0114] Step S41: Determine a first cell in the second communication system, where the first cell is a cell that performs dynamic spectrum sharing with the first communication system.

[0115] Step S42: Determine rate matching information of a cell reference signal CRS corresponding to the first cell and cell information of a second cell, where the second cell is a neighboring cell of the first cell.

[0116] Step S43: Determine a first resource unit RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determine a second resource unit RE occupied by the CRS corresponding to the second cell based on the cell information.

[0117] Step S44: Avoid the first RE and the second RE when performing PDSCH mapping, and communicate with the terminal device in the first communication system based on the PDSCH obtained based on the channel mapping.

[0118] In some feasible implementations, the specific implementations of the above steps S41 to S44 can be found in Figure 1 The implementation method shown in steps S11 to S14 will not be repeated here.

[0119] Step S45: Send configuration information to the terminal device so that the terminal device determines the first RE and second RE avoided by the network device when performing PDSCH mapping based on the configuration information, and communicates with the network device based on the PDSCH obtained by channel mapping.

[0120] In some feasible implementations, the above configuration information includes rate matching information of the CRS corresponding to the first cell and cell information of the second cell.

[0121] Optionally, the configuration information may be sent via a serving cell configuration message, ServingCellConfig. Different fields in the serving cell configuration message, ServingCellConfig, carry the cell information of the second cell and the rate matching information. Optionally, the carrierFreqDL field in the serving cell configuration message, ServingCellConfig, carries the frequency information included in the rate matching information.

[0122] Optionally, the carrierBandwidthDL field in the serving cell configuration message ServingCellConfig carries the bandwidth information included in the rate matching information.

[0123] Optionally, the nrofCRS-Ports field in the serving cell configuration message ServingCellConfig carries the number of ports included in the rate matching information.

[0124] Optionally, the v-shift field in the serving cell configuration message ServingCellConfig carries the offset information included in the rate matching information.

[0125] Optionally, the v-shift field in the serving cell configuration message ServingCellConfig carries the cell information of the second cell.

[0126] As an example, the cell information of the second cell is the physical cell ID (PCI). The network device in the first communication system can expand the v-Shift field in the serving cell configuration message ServingCellConfig, such as expanding the v-Shift field from a 3-bit bitmap to a 6-bit bitmap to further carry the physical cell ID of the second cell.

[0127] As an example, the network device in the NR system sends a serving cell configuration message ServingCellConfig to the terminal device in the NR system. The serving cell configuration message ServingCellConfig carries the frequency information, bandwidth information, number of ports and offset information of the CRS corresponding to the first cell, and the PCI corresponding to the second cell.

[0128] An embodiment of the present application provides a communication method, applied to a terminal device in a first communication system, the method comprising:

[0129] receiving configuration information sent by a network device in a first communication system, where the configuration information includes rate matching information of a CRS corresponding to a first cell and cell information of a second cell, where the first cell is a cell in the second communication system that performs dynamic spectrum sharing with the first communication system, and the second cell is a neighboring cell of the first cell;

[0130] Determine a first RE occupied by a CRS corresponding to a first cell based on the rate matching information, and determine a second RE occupied by a CRS corresponding to a second cell based on the cell information;

[0131] The first RE and the second RE are determined as REs to be avoided by the network device when performing PDSCH mapping, so as to communicate with the network device based on the PDSCH obtained by channel mapping.

[0132] The first cell is a cell in a frequency band of the second communication system that is within a frequency band of the first communication system, and the second cell is a neighboring cell of the first cell.

[0133] Optionally, the terminal device in the first communication system may obtain the above configuration information by receiving a serving cell configuration message ServingCellConfig sent by a network device in the first communication system.

[0134] Furthermore, the terminal device in the first communication system can determine the rate matching information and cell information through different fields of the serving cell configuration message ServingCellConfig.

[0135] Optionally, the terminal device in the first communication system may determine the frequency information included in the above-mentioned rate matching information from the carrierFreqDL field in the above-mentioned serving cell configuration message ServingCellConfig.

[0136] Optionally, the terminal device in the first communication system may determine the bandwidth information included in the rate matching information from the carrierBandwidthDL field in the serving cell configuration message ServingCellConfig.

[0137] Optionally, the terminal device in the first communication system may determine the number of ports included in the rate matching information from the nrofCRS-Ports field in the serving cell configuration message ServingCellConfig.

[0138] Optionally, the terminal device in the first communication system may determine the offset information included in the above-mentioned rate matching information from the v-shift field in the above-mentioned serving cell configuration message ServingCellConfig.

[0139] Optionally, the terminal device in the first communication system can determine the cell information of the second cell from the v-shift field in the above-mentioned serving cell configuration message ServingCellConfig.

[0140] Among them, the terminal device in the first communication system determines the first RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determines the second RE occupied by the CRS corresponding to the second cell based on the cell information. Figure 1 The implementation method shown in step S13 is not repeated here.

[0141] In some feasible implementations, the rate matching information of the CRS corresponding to the first cell includes frequency information, bandwidth information, number of ports, and offset information.

[0142] In some feasible implementation manners, the cell information of the second cell includes a physical cell ID of the second cell.

[0143] In some feasible implementations, the terminal device of the first communication system may perform rate matching based on the serving cell configuration information, and then receive the PDSCH sent by the network device in the first communication system based on the obtained RE.

[0144] In some feasible implementations, determining the first RE and the second RE as REs to be avoided by the network device when performing PDSCH mapping includes:

[0145] Determine, based on the rate matching information, a shared downlink PRB corresponding to the first communication system and the second communication system;

[0146] The first RE in the shared downlink PRB and the second RE in the shared downlink PRB are determined as REs to be avoided by the network device when performing PDSCH mapping.

[0147] Among them, the specific implementation method of the terminal device in the first communication system determining the shared downlink PRB based on the rate matching information can be found in Figure 1 The implementation method in which the network device in the first communication system determines the shared downlink PRB is not described here.

[0148] Furthermore, the terminal device in the first communication system can determine the first downlink PRB corresponding to the first communication system in the shared downlink PRB, and determine the RE of the first RE in the first downlink PRB and the RE of the second RE in the first downlink PRB as REs avoided by the network device when performing PDSCH mapping.

[0149] The first downlink PRB is a PRB in the shared downlink PRB corresponding to the first communication system, that is, a part of the shared downlink PRBs used by the network devices in the first communication system.

[0150] Optionally, the terminal device in the first communication system determines a first downlink PRB corresponding to the first communication system in the shared downlink PRB, including:

[0151] Determine a first downlink PRB utilization rate corresponding to the first communication system and a second downlink PRB utilization rate corresponding to the second communication system;

[0152] Based on the first downlink PRB utilization rate and the second downlink PRB utilization rate, a first downlink PRB corresponding to the first communication system in the shared downlink PRBs is determined.

[0153] Among them, the terminal equipment in the first communication system can receive system messages sent by the network equipment in the first communication system to determine the first downlink PRB utilization rate corresponding to the first communication system and the second downlink PRB utilization rate corresponding to the second communication system.

[0154] Among them, the terminal device in the first communication system determines the specific implementation method of the first downlink PRB in the shared downlink PRB based on the first downlink PRB utilization rate and the second downlink PRB utilization rate, which can be found in Figure 1 The implementation manner in which the network device in the first communication system determines the first downlink PRB is not described here in detail.

[0155] In some feasible implementations, the terminal device in the first communication system can also determine the REs occupied by other reference signals, physical channels, etc. that are avoided by the network device in the first communication system when performing PDSCH mapping, thereby determining the PDSCH finally determined by the network device in the first communication system, so as to communicate with the network device in the first communication system based on the PDSCH.

[0156] In an embodiment of the present application, the network device and the terminal device in the first communication system determine the first RE occupied by the CRS corresponding to the first cell and the second RE occupied by the CRS corresponding to the neighboring cell based on the rate matching information corresponding to the first cell and the cell information of the neighboring cell of the first cell, so that the above-mentioned first RE and second RE can be avoided during PDSCH mapping. Based on this, not only the interference of the CRS corresponding to the first cell on the PDSCH mapping can be reduced, but also the interference of the CRS corresponding to the second cell on the PDSCH mapping can be reduced, thereby further reducing the bit error rate of the spectrum resources of the second communication system reused by the first communication system, improving the stability of the first communication system and the second communication system when performing spectrum sharing, and having high applicability.

[0157] See also Figure 5 , Figure 5 1 is a schematic diagram of a structure of a communication device provided in an embodiment of the present application. The communication device 1 provided in an embodiment of the present application includes:

[0158] A first determining unit 11 is configured to determine a first cell in a second communication system, where the first cell is a cell that performs dynamic spectrum sharing with the first communication system;

[0159] A second determining unit 12 is configured to determine rate matching information of a cell reference signal CRS corresponding to the first cell and cell information of a second cell, where the second cell is a neighboring cell of the first cell;

[0160] A third determining unit 13 is configured to determine a first resource element RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determine a second resource element RE occupied by the CRS corresponding to the second cell based on the cell information;

[0161] The first communication unit 14 is configured to avoid the first RE and the second RE when performing physical downlink shared channel PDSCH mapping, so as to communicate with the terminal device in the first communication system based on the PDSCH obtained by channel mapping.

[0162] In some feasible implementations, the first communication unit 14 is further configured to:

[0163] Sending configuration information to the terminal device, so that the terminal device determines, based on the configuration information, the first RE and the second RE to be avoided by the network device when performing PDSCH mapping, and communicates with the network device based on the PDSCH obtained by the channel mapping;

[0164] The above configuration information includes the above rate matching information and the above cell information.

[0165] In some feasible implementations, the above configuration information is sent via a serving cell configuration message ServingCellConfig, and the v-shift field in the above serving cell configuration message ServingCellConfig carries the above cell information.

[0166] In some feasible implementations, the rate matching information includes frequency information, bandwidth information, number of ports, and offset information.

[0167] In some feasible implementation manners, the above-mentioned cell information includes a physical cell ID.

[0168] In some feasible implementations, the first communication unit 14 is configured to:

[0169] Determine, based on the rate matching information, a shared downlink physical resource block (PRB) corresponding to the first communication system and the second communication system;

[0170] When performing PDSCH mapping, avoid the first RE being in the shared downlink PRB and the second RE being in the shared downlink PRB.

[0171] In some feasible implementations, the first communication unit 14 is configured to:

[0172] Determine a first downlink PRB corresponding to the first communication system in the shared downlink PRB;

[0173] When performing PDSCH mapping, avoid the first RE being in the first downlink PRB and the second RE being in the first downlink PRB.

[0174] In some feasible implementations, the first communication unit 14 is configured to:

[0175] Determine a first downlink PRB utilization rate corresponding to the first communication system and a second downlink PRB utilization rate corresponding to the second communication system;

[0176] Based on the first downlink PRB utilization rate and the second downlink PRB utilization rate, a first downlink PRB corresponding to the first communication system in the shared downlink PRB is determined.

[0177] In some feasible implementations, the first communication unit 14 is configured to:

[0178] Determine, based on the physical cell ID, offset information of the CRS corresponding to the second cell;

[0179] Based on the offset information of the CRS corresponding to the second cell, the second RE occupied by the CRS corresponding to the second cell is determined.

[0180] It should be noted here that the above-mentioned communication device 1 provided in the embodiment of the present application can implement all the method steps implemented by the network equipment in the first communication system 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.

[0181] See also Figure 6 , Figure 6 2 is another structural diagram of a communication device provided in an embodiment of the present application. The communication device 2 provided in an embodiment of the present application includes:

[0182] a receiving unit 21, configured to receive configuration information sent by a network device in the first communication system, the configuration information including rate matching information of a CRS corresponding to a first cell and cell information of a second cell, the first cell being a cell in the second communication system that performs dynamic spectrum sharing with the first communication system, and the second cell being a neighboring cell of the first cell;

[0183] A fourth determining unit 22 is configured to determine a first RE occupied by a CRS corresponding to the first cell based on the rate matching information, and determine a second RE occupied by a CRS corresponding to the second cell based on the cell information;

[0184] The second communication unit 23 is configured to determine the first RE and the second RE as REs to be avoided by the network device when performing PDSCH mapping, and communicate with the network device based on the PDSCH obtained by channel mapping.

[0185] In some feasible implementations, the second communication unit 23 is configured to:

[0186] Determine, based on the rate matching information, the shared downlink PRB corresponding to the first communication system and the second communication system;

[0187] The first RE in the shared downlink PRB and the second RE in the shared downlink PRB are determined as REs to be avoided by the network device when performing PDSCH mapping.

[0188] In some feasible implementations, the second communication unit 23 is configured to:

[0189] Determine a first downlink PRB corresponding to the first communication system in the shared downlink PRB;

[0190] The first RE in the first downlink PRB and the second RE in the first downlink PRB are determined as REs to be avoided by the network device when performing PDSCH mapping.

[0191] In some feasible implementations, the second communication unit 23 is configured to:

[0192] Determine a first downlink PRB utilization rate corresponding to the first communication system and a second downlink PRB utilization rate corresponding to the second communication system;

[0193] Based on the first downlink PRB utilization rate and the second downlink PRB utilization rate, a first downlink PRB corresponding to the first communication system in the shared downlink PRB is determined.

[0194] In some feasible implementations, the second communication unit 23 is configured to:

[0195] Determine, based on the physical cell ID, offset information of the CRS corresponding to the second cell;

[0196] Based on the offset information of the CRS corresponding to the second cell, the second RE occupied by the CRS corresponding to the second cell is determined.

[0197] It should be noted here that the above-mentioned communication device 2 provided in the embodiment of the present application can implement all the method steps implemented by the terminal device in the first communication system 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.

[0198] It should be noted that the division of units in the embodiments of the present application is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0199] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the above-mentioned methods of each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0200] See also Figure 7 , Figure 7 12 is a schematic diagram of the structure of a network device provided in an embodiment of the present application. The network device provided in an embodiment of the present application is a network device in a first communication system, including a memory 1220 , a transceiver 1200 and a processor 1210 .

[0201] The transceiver 1200 is configured to receive and send data under the control of the processor 1210. The memory 1220 is configured to store a computer program. The processor 1210 is configured to read the computer program in the memory 1220 to implement the following:

[0202] Determining a first cell in a second communication system, where the first cell is a cell performing dynamic spectrum sharing with the first communication system;

[0203] Determine rate matching information of a cell reference signal (CRS) corresponding to the first cell and cell information of a second cell, where the second cell is a neighboring cell of the first cell;

[0204] Determine a first resource unit RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determine a second resource unit RE occupied by the CRS corresponding to the second cell based on the cell information;

[0205] The first RE and the second RE are avoided when performing physical downlink shared channel PDSCH mapping, so as to communicate with the terminal device in the first communication system based on the PDSCH obtained based on the channel mapping.

[0206] In some feasible implementations, the processor 1210 is further configured to:

[0207] Sending configuration information to the terminal device, so that the terminal device determines, based on the configuration information, the first RE and the second RE to be avoided by the network device when performing PDSCH mapping, and communicates with the network device based on the PDSCH obtained by the channel mapping;

[0208] The above configuration information includes the above rate matching information and the above cell information.

[0209] In some feasible implementations, the above configuration information is sent via a serving cell configuration message ServingCellConfig, and the v-shift field in the above serving cell configuration message ServingCellConfig carries the above cell information.

[0210] In some feasible implementations, the rate matching information includes frequency information, bandwidth information, number of ports, and offset information.

[0211] In some feasible implementation manners, the above-mentioned cell information includes a physical cell ID.

[0212] In some feasible implementations, the processor 1210 is configured to:

[0213] Determine, based on the rate matching information, a shared downlink physical resource block (PRB) corresponding to the first communication system and the second communication system;

[0214] When performing PDSCH mapping, avoid the first RE being in the shared downlink PRB and the second RE being in the shared downlink PRB.

[0215] In some feasible implementations, the processor 1210 is configured to:

[0216] Determine a first downlink PRB corresponding to the first communication system in the shared downlink PRB;

[0217] When performing PDSCH mapping, avoid the first RE being in the first downlink PRB and the second RE being in the first downlink PRB.

[0218] In some feasible implementations, the processor 1210 is configured to:

[0219] Determine a first downlink PRB utilization rate corresponding to the first communication system and a second downlink PRB utilization rate corresponding to the second communication system;

[0220] Based on the first downlink PRB utilization rate and the second downlink PRB utilization rate, a first downlink PRB corresponding to the first communication system in the shared downlink PRB is determined.

[0221] In some feasible implementations, the processor 1210 is configured to:

[0222] Determine, based on the physical cell ID, offset information of the CRS corresponding to the second cell;

[0223] Based on the offset information of the CRS corresponding to the second cell, the second RE occupied by the CRS corresponding to the second cell is determined.

[0224] Among them, Figure 7 In the embodiment of the present invention, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits such as one or more processors represented by processor 1210 and memory represented by memory 1220. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be further described herein. The bus interface provides an interface. The transceiver 1200 can be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like.

[0225] The processor 1210 is responsible for managing the bus architecture and general processing, and the memory 1220 can store data used by the processor 1210 when performing operations.

[0226] Optionally, the processor 1210 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0227] The processor calls the computer program stored in the memory to execute the communication method of the network device in the first communication system provided by the embodiment of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0228] It should be noted here that the network device provided in the embodiment of the present application can implement all the method steps implemented by the network device in the first communication system in the embodiment of the present application, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0229] See also Figure 8 , Figure 8 13 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. The terminal device provided in an embodiment of the present application is a terminal device in a first communication system, including a memory 1320, a transceiver 1300 and a processor 1310.

[0230] The transceiver 1300 is configured to receive and transmit data under the control of the processor 1310. The memory 1320 is configured to store a computer program. The processor 1310 is configured to read the computer program in the memory 1320 to implement the following:

[0231] receiving configuration information sent by a network device in the first communication system, the configuration information including rate matching information of a CRS corresponding to a first cell and cell information of a second cell, where the first cell is a cell in the second communication system that performs dynamic spectrum sharing with the first communication system, and the second cell is a neighboring cell of the first cell;

[0232] Determine a first RE occupied by the CRS corresponding to the first cell based on the rate matching information, and determine a second RE occupied by the CRS corresponding to the second cell based on the cell information;

[0233] The first RE and the second RE are determined as REs to be avoided by the network device when performing PDSCH mapping, so as to communicate with the network device based on the PDSCH obtained based on channel mapping.

[0234] In some feasible implementations, the processor 1310 is configured to:

[0235] Determine, based on the rate matching information, the shared downlink PRB corresponding to the first communication system and the second communication system;

[0236] The first RE in the shared downlink PRB and the second RE in the shared downlink PRB are determined as REs to be avoided by the network device when performing PDSCH mapping.

[0237] In some feasible implementations, the processor 1310 is configured to:

[0238] Determine a first downlink PRB corresponding to the first communication system in the shared downlink PRB;

[0239] The first RE in the first downlink PRB and the second RE in the first downlink PRB are determined as REs to be avoided by the network device when performing PDSCH mapping.

[0240] In some feasible implementations, the processor 1310 is configured to:

[0241] Determine a first downlink PRB utilization rate corresponding to the first communication system and a second downlink PRB utilization rate corresponding to the second communication system;

[0242] Based on the first downlink PRB utilization rate and the second downlink PRB utilization rate, a first downlink PRB corresponding to the first communication system in the shared downlink PRB is determined.

[0243] In some feasible implementations, the processor 1310 is configured to:

[0244] Determine, based on the physical cell ID, offset information of the CRS corresponding to the second cell;

[0245] Based on the offset information of the CRS corresponding to the second cell, the second RE occupied by the CRS corresponding to the second cell is determined.

[0246] Among them, Figure 8 In the present invention, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits such as one or more processors represented by processor 1310 and memory represented by memory 1320. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and therefore not further described herein. The bus interface provides an interface. The transceiver 1300 can be multiple components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 can store data used by the processor 1310 when performing operations. For different network devices, the user interface 1330 can also be an interface capable of connecting to required external or internal devices. Connected devices include but are not limited to a keypad, display, speaker, microphone, joystick, etc.

[0247] The processor 1310 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0248] It should be noted that the terminal device provided in the embodiment of the present application can implement all the method steps implemented by the terminal device in the first communication system in the embodiment of the present application, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0249] The processor-readable storage medium provided in the embodiment of the present application can execute all the method steps implemented by the network device and / or terminal device in the first communication system in the embodiment of the present application through its built-in functional modules. For details, please refer to the implementation methods provided in the above steps, which will not be repeated here.

[0250] In some feasible embodiments, the above-mentioned processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, tapes, magneto-optical disks (MO)), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drives (SSDs)), etc.

[0251] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) that contain computer-usable program code.

[0252] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0253] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce an article of manufacture comprising an instruction device that implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0254] These processor-executable instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0255] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A communication method, characterized in that: A network device applied to a first communication system, the method comprising: Determining a first cell in a second communication system, where the first cell is a cell performing dynamic spectrum sharing with the first communication system; Determine rate matching information of a cell reference signal CRS corresponding to the first cell and cell information of a second cell, where the second cell is a neighboring cell of the first cell; Determine a first resource unit RE occupied by a CRS corresponding to the first cell based on the rate matching information, and determine a second resource unit RE occupied by a CRS corresponding to the second cell based on the cell information; Avoiding the first RE and the second RE when performing physical downlink shared channel (PDSCH) mapping, and communicating with the terminal device in the first communication system based on the PDSCH obtained by channel mapping; Among them, avoiding the first RE and the second RE when performing physical downlink shared channel PDSCH mapping includes: determining the shared downlink physical resource block PRB corresponding to the first communication system and the second communication system based on the rate matching information; determining the first downlink PRB utilization corresponding to the first communication system and the second downlink PRB utilization corresponding to the second communication system; determining the first downlink PRB corresponding to the first communication system in the shared downlink PRB based on the first downlink PRB utilization and the second downlink PRB utilization; avoiding the first RE in the first downlink PRB and the second RE in the first downlink PRB when performing PDSCH mapping.

2. The method according to claim 1, characterized in that The method further comprises: Sending configuration information to the terminal device, so that the terminal device determines, based on the configuration information, the first RE and the second RE avoided by the network device when performing PDSCH mapping, and communicates with the network device based on the PDSCH obtained by the channel mapping; The configuration information includes the rate matching information and the cell information.

3. The method according to claim 2, characterized in that The configuration information is sent via a serving cell configuration message ServingCellConfig, and the v-shift field in the serving cell configuration message ServingCellConfig carries the cell information.

4. The method according to any one of claims 1 to 3, characterized in that The rate matching information includes frequency information, bandwidth information, port number and offset information.

5. The method according to any one of claims 1 to 3, characterized in that The cell information includes a physical cell ID.

6. The method according to claim 5, characterized in that The determining, based on the cell information, a second RE occupied by a CRS corresponding to the second cell, includes: Determine offset information of the CRS corresponding to the second cell based on the physical cell ID; Based on the offset information of the CRS corresponding to the second cell, a second RE occupied by the CRS corresponding to the second cell is determined.

7. A communication method, characterized in that: Applied to a terminal device in a first communication system, the method includes: receiving configuration information sent by a network device in the first communication system, the configuration information including rate matching information of a CRS corresponding to a first cell and cell information of a second cell, where the first cell is a cell in the second communication system that performs dynamic spectrum sharing with the first communication system, and the second cell is a neighboring cell of the first cell; Determine a first RE occupied by a CRS corresponding to the first cell based on the rate matching information, and determine a second RE occupied by a CRS corresponding to the second cell based on the cell information; Determining the first RE and the second RE as REs to be avoided by the network device when performing PDSCH mapping, and communicating with the network device based on the PDSCH obtained by channel mapping; Among them, the determining of the first RE and the second RE as the REs avoided by the network device when performing PDSCH mapping includes: determining the shared downlink PRB corresponding to the first communication system and the second communication system based on the rate matching information; determining the first downlink PRB utilization corresponding to the first communication system and the second downlink PRB utilization corresponding to the second communication system; determining the first downlink PRB corresponding to the first communication system in the shared downlink PRB based on the first downlink PRB utilization and the second downlink PRB utilization; determining the RE of the first RE in the first downlink PRB and the RE of the second RE in the first downlink PRB as the REs avoided by the network device when performing PDSCH mapping.

8. The method according to claim 7, characterized in that The cell information includes a physical cell ID; and determining, based on the cell information, a second RE occupied by a CRS corresponding to the second cell, includes: Determine offset information of the CRS corresponding to the second cell based on the physical cell ID; Based on the offset information of the CRS corresponding to the second cell, a second RE occupied by the CRS corresponding to the second cell is determined.

9. A communication device, characterized in that: The device comprises: A first determining unit is configured to determine a first cell in a second communication system, where the first cell is a cell that performs dynamic spectrum sharing with the first communication system; A second determining unit is configured to determine rate matching information of a cell reference signal CRS corresponding to the first cell and cell information of a second cell, where the second cell is a neighboring cell of the first cell; a third determining unit, configured to determine a first resource element RE occupied by a CRS corresponding to the first cell based on the rate matching information, and determine a second resource element RE occupied by a CRS corresponding to the second cell based on the cell information; A first communication unit is used to avoid the first RE and the second RE when performing physical downlink shared channel PDSCH mapping, so as to communicate with the terminal equipment in the first communication system based on the PDSCH obtained by channel mapping; the first communication unit is specifically used to: determine the shared downlink physical resource block PRB corresponding to the first communication system and the second communication system based on the rate matching information; determine the first downlink PRB utilization corresponding to the first communication system and the second downlink PRB utilization corresponding to the second communication system; determine the first downlink PRB corresponding to the first communication system in the shared downlink PRB based on the first downlink PRB utilization and the second downlink PRB utilization; avoid the first RE in the first downlink PRB and the second RE in the first downlink PRB when performing PDSCH mapping.

10. A communication device, characterized in that: The device comprises: a receiving unit, configured to receive configuration information sent by a network device in a first communication system, the configuration information including rate matching information of a CRS corresponding to a first cell and cell information of a second cell, where the first cell is a cell in the second communication system that performs dynamic spectrum sharing with the first communication system, and the second cell is a neighboring cell of the first cell; A fourth determining unit is configured to determine a first RE occupied by a CRS corresponding to the first cell based on the rate matching information, and determine a second RE occupied by a CRS corresponding to the second cell based on the cell information; A second communication unit is used to determine the first RE and the second RE as REs avoided by the network device when performing PDSCH mapping, so as to communicate with the network device based on the PDSCH obtained by channel mapping; the second communication unit is specifically used to: determine the shared downlink physical resource block PRB corresponding to the first communication system and the second communication system based on the rate matching information; determine the first downlink PRB utilization corresponding to the first communication system and the second downlink PRB utilization corresponding to the second communication system; determine the first downlink PRB corresponding to the first communication system in the shared downlink PRB based on the first downlink PRB utilization and the second downlink PRB utilization; determine the RE of the first RE in the first downlink PRB and the RE of the second RE in the first downlink PRB as REs avoided by the network device when performing PDSCH mapping.

11. A network device, characterized in that: Including memory, transceiver, processor: Memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; A processor, configured to read the computer program in the memory and execute the method according to any one of claims 1 to 6.

12. A terminal device, characterized in that: Including memory, transceiver, processor: Memory for storing computer programs; A transceiver for transmitting and receiving data under the control of the processor; a processor for reading the computer program in the memory and executing the method according to claim 7 or 8.

13. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method according to any one of claims 1 to 6 or the method according to claim 7 or 8.

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