Information transmission method, base station, terminal and communication system

Abstract

This disclosure proposes an information transmission method, a base station, a terminal, and a communication system, relating to the field of mobile communications. In this disclosure, the NR terminal reports its LTE neighbor cell CRS interference suppression capability information to the NR base station. The NR base station receives the LTE neighbor cell CRS interference suppression capability information reported by the NR terminal to assist the base station in making accurate decisions.

Description

[0001] This application is a divisional application of the invention patent application No. 202110339566.7, filed on March 30, 2021, entitled "Information Transmission Method, Base Station, Terminal and Communication System". Technical Field

[0002] This disclosure relates to the field of mobile communications, and in particular to an information transmission method, base station, terminal and communication system. Background Technology

[0003] 4G (4 th 4th generation LTE (Long Term Evolution) and 5G (5G) th Dynamic Spectrum Sharing (DSS) technology between LTE and NR (New Radio) terminals allows LTE and NR terminals to share the same spectrum, with the network dynamically allocating resources to the terminals for 4G or 5G transmission based on network load and other factors.

[0004] The downlink cell reference signal (CRS) of a neighboring 4G LTE system operating in DSS mode, which is always on and occupies fixed resources, can cause significant interference to the reception of 5G NR terminals in the local cell.

[0005] NR terminals supporting neighbor cell interference cancellation capabilities can report channel quality information based on interference suppression to the NR base station when a neighboring LTE cell schedules downlink data transmission on the time-frequency resources of the NR cell's Channel State Information Reference Signal (CSI-RS). This information includes suppression of neighbor cell interference, including CRS interference. In this case, the NR base station's scheduling based on this channel quality information matches the actual transmission quality.

[0006] However, if the LTE neighboring cell does not allocate downlink data transmission on the NR channel quality measurement reference signal, the NR terminal's channel quality detection of the wireless channel does not include neighboring cell CRS interference. That is, the channel quality information reported by the NR terminal to the base station at this time cannot reflect the reception quality of the NR terminal under CRS interference, which leads to a decrease in the accuracy of the base station's resource allocation and scheduling operations. Summary of the Invention

[0007] In this embodiment of the disclosure, the NR terminal reports its LTE neighbor cell CRS interference suppression capability information to the NR base station. The NR base station receives the LTE neighbor cell CRS interference suppression capability information reported by the NR terminal to assist the base station in making accurate decisions.

[0008] Some embodiments of this disclosure propose an information transmission method, including: a New Radio (NR) terminal reporting its Long Term Evolution (LTE) Neighbor Cell Reference Signal (CRS) interference suppression capability information to an NR base station.

[0009] In some embodiments, the NR terminal receives indication information related to LTE neighbor cell CRS interference suppression sent by the NR base station through Radio Resource Control (RRC) signaling, wherein the indication information includes one or more of LTE neighbor cell CRS interference suppression enable control information or LTE neighbor cell CRS information.

[0010] In some embodiments, the NR terminal performs interference suppression based on the indication information.

[0011] In some embodiments, the NR terminal performs interference suppression based on the indication information, including:

[0012] If the indication information includes enable control information for LTE neighbor cell CRS interference suppression, the NR terminal enables or disables LTE neighbor cell CRS interference suppression according to the enable control information for LTE neighbor cell CRS interference suppression.

[0013] If the indication information includes LTE neighbor cell CRS information, the NR terminal enables LTE neighbor cell CRS interference suppression based on the LTE neighbor cell CRS information and performs interference detection at the corresponding location in the LTE neighbor cell CRS information.

[0014] This disclosure provides an information transmission method in some embodiments, including: an NR base station receiving LTE neighbor cell CRS interference suppression capability information reported by an NR terminal.

[0015] In some embodiments, the NR base station sends indication information related to LTE neighbor cell CRS interference suppression to the NR terminal via RRC signaling, wherein the indication information includes one or more of LTE neighbor cell CRS interference suppression enable control information and LTE neighbor cell CRS information.

[0016] In some embodiments, the NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located.

[0017] In some embodiments, the NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, including:

[0018] The NR base station determines, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, that the NR terminal supports LTE neighbor cell CRS interference suppression and that the LTE neighbor cell has CRS interference to the NR cell where the NR terminal is currently located. Then, the NR base station sends enable control information for enabling LTE neighbor cell CRS interference suppression and / or LTE neighbor cell CRS information to the NR terminal.

[0019] Alternatively, the NR base station may send enable control information to the NR terminal to disable LTE neighbor cell CRS interference suppression based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR terminal currently in the NR cell.

[0020] Alternatively, the NR base station may, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, determine that the NR terminal supports LTE neighbor cell CRS interference suppression and that the LTE neighbor cells do not cause CRS interference to the NR cell where the NR terminal is currently located, and then send enable control information to the NR terminal to disable LTE neighbor cell CRS interference suppression.

[0021] Alternatively, the NR base station may, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, determine that the NR terminal supports LTE neighbor cell CRS interference suppression based on blind detection and that the LTE neighbor cell has CRS interference to the NR cell where the NR terminal is currently located, and then send enable control information for enabling LTE neighbor cell CRS interference suppression and / or LTE neighbor cell CRS information to the NR terminal.

[0022] Alternatively, the NR base station may determine, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, whether the NR terminal supports LTE neighbor cell CRS interference suppression, does not support LTE neighbor cell CRS interference suppression based on blind detection, and the LTE neighbor cell causes CRS interference to the NR cell where the NR terminal is currently located, and then send LTE neighbor cell CRS information to the NR terminal.

[0023] In some embodiments, the LTE neighbor cell CRS interference suppression capability information includes one or more of the following:

[0024] Does the NR terminal support LTE neighbor cell CRS interference suppression?

[0025] Does the NR terminal support LTE neighbor cell CRS interference suppression based on blind detection?

[0026] When the new radio subcarrier spacing is 30k, does the NR terminal support LTE neighbor cell CRS interference suppression?

[0027] Does the NR terminal support LTE neighbor cell CRS interference suppression in asynchronous systems?

[0028] In some embodiments, the value of whether the NR terminal supports LTE neighbor cell CRS interference suppression indicates whether the NR terminal supports LTE neighbor cell CRS interference suppression, the number of LTE neighbor cells that the NR terminal can support for LTE neighbor cell CRS interference suppression, or the number of carrier units that the NR terminal can support for simultaneous LTE neighbor cell CRS interference suppression in a carrier aggregation scenario.

[0029] In some embodiments, the enable control information for LTE neighbor cell CRS interference suppression is sent via lte-CRS-ToMatchAround signaling or other RRC signaling besides lte-CRS-ToMatchAround signaling.

[0030] In some embodiments, LTE neighbor cell CRS information includes one or more of the following:

[0031] The information includes the identification information, number of CRS ports, MBSFN subframe configuration information, center carrier and system bandwidth, time slot number information, cyclic prefix used, and duplex mode of the LTE neighboring cells that have CRS interference in the NR cell where the NR terminal is currently located;

[0032] If the duplex mode is TDD, the LTE neighbor cell CRS information also includes uplink and downlink subframe ratio information.

[0033] In some embodiments, when the indication information includes LTE neighbor cell CRS information, the NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal, including:

[0034] The NR base station sends a list containing one or more arrays to the NR terminal via RRC signaling. Each array in the list indicates the CRS information of LTE neighboring cells known from the network side that have CRS interference to the NR cell where the NR terminal is currently located, so as to instruct the NR terminal to enable CRS interference suppression for the corresponding LTE neighboring cells.

[0035] Alternatively, the NR base station may send release information for the entire list or a portion of the array to the NR terminal via RRC signaling, instructing the NR terminal to release the list or a portion of the array and disable CRS interference suppression for the corresponding LTE neighboring cells.

[0036] Some embodiments of this disclosure provide an NR base station, including: a memory; and a processor coupled to the memory, the processor being configured to execute the method described in any of the embodiments based on instructions stored in the memory.

[0037] Some embodiments of this disclosure provide an NR terminal, including: a memory; and a processor coupled to the memory, the processor being configured to execute the methods described in any of the embodiments based on instructions stored in the memory.

[0038] This disclosure provides a communication system in some embodiments, including: an NR base station; and an NR terminal.

[0039] Some embodiments of this disclosure provide a non-transitory computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the steps of the method described in any of the embodiments. Attached Figure Description

[0040] The accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. This disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings.

[0041] Obviously, the accompanying drawings described below are merely some embodiments of this disclosure. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0042] Figure 1 A flowchart illustrating an interference suppression method 10 according to some embodiments of the present disclosure is shown.

[0043] Figure 2 A schematic diagram of a communication system 20 according to some embodiments of the present disclosure is shown.

[0044] Figure 3 A schematic diagram of a base station 30 according to some embodiments of the present disclosure is shown.

[0045] Figure 4 A schematic diagram of a terminal 40 according to some embodiments of the present disclosure is shown. Detailed Implementation

[0046] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0047] Figure 1 A flowchart illustrating an information transmission method according to some embodiments of this disclosure is shown.

[0048] like Figure 1 As shown, the information transmission method 10 of this embodiment includes steps 110a-110b; if necessary, it may also include one or more of steps 120a, 120b, and 130.

[0049] In step 110a, the NR terminal reports its LTE neighbor cell CRS interference suppression capability information to the NR base station.

[0050] The NR terminal performs channel quality detection on the wireless channel (this detection does not include neighboring cell CRS interference if the LTE neighboring cell has not allocated downlink data transmission on the NR channel quality measurement reference signal), and simultaneously reports its LTE neighboring cell CRS interference suppression capability information to the NR base station. This assists the base station in making accurate resource allocation and scheduling decisions.

[0051] For example, an NR base station initiates a capability query to an NR terminal, and the NR terminal reports its own LTE neighbor cell CRS interference suppression capability information to the NR base station.

[0052] The following are some examples of LTE neighbor cell CRS interference suppression capability information; however, this disclosure is not limited to these examples.

[0053] In some embodiments, the LTE neighbor cell CRS interference suppression capability information includes one or more of the following:

[0054] Does the NR terminal support LTE neighbor cell CRS interference suppression (set to capability 1)?

[0055] Does the NR terminal support blind detection-based LTE neighbor cell CRS interference suppression (set as capability 2)?

[0056] When the new air interface subcarrier spacing is 30k, does the NR terminal support LTE neighbor cell CRS interference suppression (set as capability 3)?

[0057] Does the NR terminal support LTE neighbor cell CRS interference suppression in asynchronous systems (set as capability 4)?

[0058] The value for whether an NR terminal supports LTE neighbor cell CRS interference suppression indicates whether the NR terminal supports LTE neighbor cell CRS interference suppression, the number of LTE neighbor cells that the NR terminal can support for LTE neighbor cell CRS interference suppression, or the number of component carriers that the NR terminal can support for simultaneous LTE neighbor cell CRS interference suppression in carrier aggregation scenarios.

[0059] Among them, the so-called LTE neighbor cell CRS interference suppression based on blind detection means that the NR terminal can perform LTE neighbor cell CRS interference detection and suppression without the network side sending LTE neighbor cell CRS information.

[0060] In step 110b, the NR base station receives the LTE neighbor cell CRS interference suppression capability information reported by the NR terminal.

[0061] In step 120a, the NR base station sends indication information related to LTE neighbor cell CRS interference suppression to the NR terminal via RRC (Radio Resource Control) signaling. The indication information includes one or more of the following: LTE neighbor cell CRS interference suppression enable control information and LTE neighbor cell CRS information.

[0062] The NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located.

[0063] Among them, the enable control information for LTE neighbor cell CRS interference suppression is an explicit indication to the NR terminal to enable or disable LTE neighbor cell CRS interference suppression. The LTE neighbor cell CRS information, in addition to indicating the CRS information of the LTE neighbor cells to the NR terminal, is also an implicit indication to the NR terminal to enable LTE neighbor cell CRS interference suppression. That is, if the NR terminal receives the LTE neighbor cell CRS information sent by the NR base station, the NR terminal enables LTE neighbor cell CRS interference suppression.

[0064] The following are some examples of how an NR base station sends LTE neighbor cell CRS interference suppression related indication information to an NR terminal based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the LTE cell in which the NR terminal is currently located. However, this disclosure is not limited to these examples.

[0065] In some embodiments, the NR base station determines, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the LTE cell where the NR terminal is currently located, that the NR terminal supports LTE neighbor cell CRS interference suppression and that the LTE neighbor cells are causing CRS interference to the LTE cell where the NR terminal is currently located. In this case, the NR base station sends enable control information for enabling LTE neighbor cell CRS interference suppression and / or LTE neighbor cell CRS information to the NR terminal. That is, the NR base station may send enable control information for enabling LTE neighbor cell CRS interference suppression to the NR terminal, or the NR base station may send LTE neighbor cell CRS information to the NR terminal, or the NR base station may simultaneously send enable control information for enabling LTE neighbor cell CRS interference suppression and LTE neighbor cell CRS information to the NR terminal.

[0066] In some embodiments, after the NR terminal enables LTE neighbor cell CRS interference suppression, the NR base station can also send enable control information to the NR terminal to disable LTE neighbor cell CRS interference suppression, based on control needs and control strategies. For example, the NR base station sends enable control information to the NR terminal to disable LTE neighbor cell CRS interference suppression based on the NR terminal's LTE neighbor cell CRS interference suppression capability information and the LTE neighbor cell information of the LTE cell where the NR terminal is currently located.

[0067] In some embodiments, the NR base station determines, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the LTE cell where the NR terminal is currently located, that the NR terminal supports LTE neighbor cell CRS interference suppression and that the LTE neighbor cells do not cause CRS interference to the LTE cell where the NR terminal is currently located. Then, the NR base station sends enable control information to the NR terminal to disable LTE neighbor cell CRS interference suppression.

[0068] In some embodiments, the NR base station determines, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the LTE cell where the NR terminal is currently located, that the NR terminal supports LTE neighbor cell CRS interference suppression based on blind detection and that the LTE neighbor cell has CRS interference to the LTE cell where the NR terminal is currently located. Then, the NR base station sends enable control information for enabling LTE neighbor cell CRS interference suppression and / or LTE neighbor cell CRS information to the NR terminal.

[0069] In some embodiments, the NR base station determines, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the LTE cell where the NR terminal is currently located, whether the NR terminal supports LTE neighbor cell CRS interference suppression, does not support LTE neighbor cell CRS interference suppression based on blind detection, and the LTE neighbor cell has CRS interference to the LTE cell where the NR terminal is currently located, and then sends LTE neighbor cell CRS information to the NR terminal.

[0070] The enable control information for LTE neighbor cell CRS interference suppression is sent via lte-CRS-ToMatchAround signaling or other RRC signaling besides lte-CRS-ToMatchAround signaling.

[0071] The indication method for LTE neighbor cell CRS interference suppression related indication information of LTE neighbor cell CRS information type includes: The NR base station sends a list containing one or more arrays to the NR terminal via RRC signaling. Each array in the list indicates the CRS information of LTE neighbor cells known on the network side that cause CRS interference to the LTE cell where the NR terminal is currently located, implicitly instructing the NR terminal to enable CRS interference suppression for the corresponding LTE neighbor cell. The list includes a maximum of N arrays, where N is a constant and its value can be pre-configured. The NR base station sends release information of the entire list or a portion of the arrays to the NR terminal via RRC signaling, instructing the NR terminal to release the list or a portion of the arrays in the list and disable CRS interference suppression for the corresponding LTE neighbor cell.

[0072] LTE neighbor cell CRS information includes one or more of the following: information about LTE neighbor cells that cause CRS interference to the LTE cell where the NR terminal is currently located: identification information (such as the physical ID of the LTE neighbor cell, or the remainder of the physical ID of the LTE neighbor cell modulo 6 (i.e., v-Shift, relevant definitions can be found in TS 36.211 6.10.1), number of CRS ports (such as 1 port / 2 ports / 4 ports), MBSFN (Multicast Broadcast Single Frequency Network) subframe configuration information, center carrier and system bandwidth (such as the number of RBs (Resource Blocks)), time slot numbering information, cyclic prefix (CP, such as normal CP or extended CP), duplex mode (such as FDD (Frequency Division Duplexing) or TDD (Time Division Duplexing)). Duplexing (Time Division Duplexing) is used. If the duplex mode is TDD, the LTE neighbor cell CRS information also includes uplink / downlink subframe allocation information. If the CRS port count and MBSFN subframe configuration information are not sent, the NR terminal should assume that the relevant field configurations of the LTE neighbor cell's CRS are equivalent to the LTE CRS configuration co-located with this cell.

[0073] An exemplary method for providing time slot numbering information is as follows: The correspondence between the current NR cell time slot number Ns,f and the neighboring LTE cell time slot number Ns is established. This field is set to an integer k between 0 and 19. When the NR cell subcarrier spacing is 30kHz, Ns = (Ns,f + k)%20; when the NR cell subcarrier spacing is 15kHz, Ns = (Ns,f×2 +k)%20. In this case, the first 7 symbols of the LTE time slot Ns are aligned with the first 7 symbols of the NR time slot Ns,f. The format of the time slot numbering information is not limited to the example given.

[0074] In step 120b, the NR terminal receives indication information related to LTE neighbor cell CRS interference suppression sent by the NR base station via RRC signaling.

[0075] In step 130, the NR terminal performs interference suppression according to the instruction information.

[0076] In some embodiments, if the indication information includes enable control information for LTE neighbor cell CRS interference suppression, the NR terminal enables or disables LTE neighbor cell CRS interference suppression according to the enable control information for LTE neighbor cell CRS interference suppression; if the indication information includes LTE neighbor cell CRS information, the NR terminal enables LTE neighbor cell CRS interference suppression according to the LTE neighbor cell CRS information and performs interference detection at the corresponding location of the LTE neighbor cell CRS information.

[0077] In some embodiments, the NR terminal may use serial interference cancellation technology to suppress interference. Specifically, firstly, a pre-equalization detection algorithm is used to detect the signal with the strongest intensity from the received raw signal. It is then determined whether the detected signal is the desired signal. If it is, the detection stops. If not, the signal that is considered interference is subtracted from the raw signal, and the next detection begins. This process is repeated until the desired signal is detected.

[0078] In the above embodiment, the NR terminal reports its LTE neighbor cell CRS interference suppression capability information to the NR base station. The NR base station receives this information to assist in making accurate decisions, such as resource allocation and scheduling. Based on the NR terminal's LTE neighbor cell CRS interference suppression capability information and the LTE neighbor cell information of the NR terminal's current LTE cell, the NR base station sends LTE neighbor cell CRS interference suppression-related indication information to the NR terminal. This allows the NR base station to more effectively control the NR terminal's LTE neighbor cell CRS interference suppression based on the NR terminal's capabilities. Simultaneously, the NR terminal's interference suppression based on the NR base station's indication information helps it perform more targeted interference suppression, reducing some blind detection operations and improving the reliability of downlink data reception. For example, explicit or implicit LTE neighbor cell CRS interference suppression enable control avoids the NR terminal performing futile CRS detection in NR and LTE non-coexistence scenarios, saving NR terminal power consumption. For example, the distribution of LTE neighbor cell CRS information can assist NR terminals that do not support blind detection in interference detection, while also helping NR terminals that support blind detection to reduce the complexity of search and calculation.

[0079] Below are some application examples. Assume a scenario where NR and LTE coexist, with the 5G system bandwidth of the NR cell being B1, the 4G system bandwidth of neighboring LTE cell 1 being B2, and the 4G system bandwidth of neighboring LTE cell 2 being B3. The frequency domain overlap between B1 and B2 is B12, and the frequency domain overlap between B1 and B3 is B13. This information is known on the 5G NR network side. For a 5G NR terminal accessing the serving cell, the NR base station will initiate a capability query to the NR terminal. The NR terminal will then report LTE neighboring cell CRS interference suppression capability information to the NR base station, such as whether it supports neighboring cell LTE CRS interference suppression. Assuming NR terminal M reports support for capabilities 1 and 2, and assuming there is co-location of 5G NR and 4G LTE in the cell, when configuring NR terminal M, the NR base station can issue lte-CRS-ToMatchAround signaling to instruct the NR terminal to perform rate matching for the LTE CRS time-frequency resources of the cell, while implicitly instructing the NR terminal to blindly detect the existence of neighboring cell CRS interference and perform interference suppression. Alternatively, the NR base station can use additional RRC signaling to instruct the NR terminal to blindly detect the presence of neighboring cell CRS interference and perform interference suppression. Furthermore, the NR base station can also directly send neighboring cell CRS configuration information to the NR terminal via RRC signaling, instructing the NR terminal M to be at the corresponding location and perform CRS interference detection and suppression.

[0080] Figure 2 A schematic diagram of a communication system 20 according to some embodiments of the present disclosure is shown.

[0081] like Figure 2 As shown, the communication system 20 of this embodiment includes: an NR base station 30 and one or more NR terminals 40.

[0082] Figure 3 A schematic diagram of an NR base station 30 according to some embodiments of the present disclosure is shown.

[0083] like Figure 3 As shown, the NR base station 30 of this embodiment includes: a memory 310; and a processor 320 coupled to the memory 310, the processor 320 being configured to execute the information transmission method performed by the NR base station in the foregoing embodiment based on instructions stored in the memory 310.

[0084] For example, the NR base station receives information on the LTE neighbor cell CRS interference suppression capability reported by the NR terminal.

[0085] For example, the NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal via RRC signaling, wherein the indication information includes one or more of LTE neighbor cell CRS interference suppression enable control information and LTE neighbor cell CRS information.

[0086] For example, the NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located.

[0087] Figure 4 A schematic diagram of an NR terminal 40 according to some embodiments of the present disclosure is shown.

[0088] like Figure 4 As shown, the NR terminal 40 of this embodiment includes: a memory 410; and a processor 420 coupled to the memory 410, the processor 420 being configured to execute the information transmission method executed by the NR terminal in the foregoing embodiment based on instructions stored in the memory 410.

[0089] For example, an NR terminal reports its LTE neighbor cell CRS interference suppression capability information to the NR base station.

[0090] For example, the NR terminal receives indication information related to LTE neighbor cell CRS interference suppression sent by the NR base station through RRC signaling, wherein the indication information includes one or more of LTE neighbor cell CRS interference suppression enable control information or LTE neighbor cell CRS information.

[0091] For example, the NR terminal performs interference suppression based on the indication information. If the indication information includes enable control information for LTE neighbor cell CRS interference suppression, the NR terminal enables or disables LTE neighbor cell CRS interference suppression based on the enable control information. If the indication information includes LTE neighbor cell CRS information, the NR terminal enables LTE neighbor cell CRS interference suppression based on the LTE neighbor cell CRS information and performs interference detection at the corresponding location in the LTE neighbor cell CRS information.

[0092] The memory 310 and 410 may include, for example, system memory, fixed non-volatile storage media, etc. The system memory may store, for example, the operating system, application programs, boot loader, and other programs.

[0093] Some embodiments of this disclosure propose a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the information transmission method described in the foregoing embodiments.

[0094] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more non-transitory computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer program code.

[0095] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0096] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0097] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0098] The above description is only a preferred embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. An information transmission method, characterized in that, include: The NR terminal reports its LTE neighbor cell reference signal CRS interference suppression capability information to the NR base station. The LTE neighbor cell CRS interference suppression capability information includes: whether the NR terminal supports LTE neighbor cell CRS interference suppression without the network side sending LTE neighbor cell CRS information. The NR terminal receives indication information related to LTE neighbor cell CRS interference suppression sent by the NR base station through Radio Resource Control (RRC) signaling. The indication information includes one or more of the following: LTE neighbor cell CRS interference suppression enable control information and / or LTE neighbor cell CRS information. The LTE neighbor cell CRS information includes one or more of the following: LTE neighbor cell identification information, CRS port number, MBSFN subframe configuration information, center carrier and system bandwidth, timeslot number information, cyclic prefix used, and duplex mode. When the indication information includes LTE neighbor cell CRS information, if the CRS port number or MBSFN subframe configuration information is not sent, the NR terminal applies the CRS port number or MBSFN subframe configuration information from the LTE CRS configuration co-located with the current NR cell.

2. The method according to claim 1, characterized in that, Also includes: The NR terminal performs interference suppression based on the instruction information.

3. The method according to claim 2, characterized in that, The NR terminal performs interference suppression according to the indication information, including: If the indication information includes enable control information for LTE neighbor cell CRS interference suppression, the NR terminal enables or disables LTE neighbor cell CRS interference suppression according to the enable control information for LTE neighbor cell CRS interference suppression. If the indication information includes LTE neighbor cell CRS information, the NR terminal enables LTE neighbor cell CRS interference suppression based on the LTE neighbor cell CRS information and performs interference detection at the corresponding location in the LTE neighbor cell CRS information.

4. The method according to claim 1, characterized in that, The LTE neighbor cell CRS interference suppression capability information also includes one or more of the following: whether the NR terminal supports LTE neighbor cell CRS interference suppression; whether the NR terminal supports LTE neighbor cell CRS interference suppression when the new radio subcarrier spacing is 30k; and whether the NR terminal supports LTE neighbor cell CRS interference suppression under asynchronous systems.

5. The method according to claim 4, characterized in that, The numerical value indicating whether an NR terminal supports LTE neighbor cell CRS interference suppression represents whether the NR terminal supports LTE neighbor cell CRS interference suppression, the number of LTE neighbor cells that the NR terminal can support for LTE neighbor cell CRS interference suppression, or the number of carrier units that the NR terminal can support for simultaneous LTE neighbor cell CRS interference suppression in carrier aggregation scenarios.

6. The method according to any one of claims 1-5, characterized in that, The enable control information for LTE neighbor cell CRS interference suppression is received via lte-CRS-ToMatchAround signaling or other RRC signaling besides lte-CRS-ToMatchAround signaling.

7. The method according to any one of claims 1-5, characterized in that, in, If the duplex mode is TDD, the LTE neighbor cell CRS information also includes uplink and downlink subframe ratio information.

8. The method according to any one of claims 1-5, characterized in that, When the indication information includes LTE neighbor cell CRS information, the NR terminal receives LTE neighbor cell CRS interference suppression related indication information sent by the NR base station through Radio Resource Control (RRC) signaling, including: The NR terminal receives a list containing one or more arrays sent by the NR base station via RRC signaling. Each array in the list indicates CRS information of LTE neighboring cells known from the network side that have CRS interference to the NR cell where the NR terminal is currently located, so as to instruct the NR terminal to enable CRS interference suppression for the corresponding LTE neighboring cells. Alternatively, the NR terminal receives release information of the entire list or a portion of the array sent by the NR base station via RRC signaling, instructing the NR terminal to release the list or a portion of the array in the list, and to disable CRS interference suppression for the corresponding LTE neighboring cell.

9. An information transmission method, characterized in that, include The NR base station receives LTE neighbor cell CRS interference suppression capability information reported by the NR terminal. The LTE neighbor cell CRS interference suppression capability information includes: whether the NR terminal supports LTE neighbor cell CRS interference suppression without the network side sending LTE neighbor cell CRS information. The NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal via RRC signaling. The indication information includes one or more of the following: LTE neighbor cell CRS interference suppression enable control information and / or LTE neighbor cell CRS information. The LTE neighbor cell CRS information includes one or more of the following: LTE neighbor cell identification information, CRS port number, MBSFN subframe configuration information, center carrier and system bandwidth, timeslot number information, cyclic prefix used, and duplex mode. When the indication information includes LTE neighbor cell CRS information, if the NR base station does not send the CRS port number or MBSFN subframe configuration information, the NR terminal is instructed to apply the CRS port number or MBSFN subframe configuration information in the LTE CRS configuration co-located with the current NR cell.

10. The method according to claim 9, characterized in that, The NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located.

11. The method according to claim 10, characterized in that, The NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR terminal's current NR cell, including: The NR base station determines, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, that the NR terminal supports LTE neighbor cell CRS interference suppression and that the LTE neighbor cell has CRS interference to the NR cell where the NR terminal is currently located. Then, the NR base station sends enable control information for enabling LTE neighbor cell CRS interference suppression and / or LTE neighbor cell CRS information to the NR terminal. Alternatively, the NR base station may send enable control information to the NR terminal to disable LTE neighbor cell CRS interference suppression based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR terminal currently in the NR cell. Alternatively, the NR base station may, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, determine that the NR terminal supports LTE neighbor cell CRS interference suppression and that the LTE neighbor cells do not cause CRS interference to the NR cell where the NR terminal is currently located, and then send enable control information to the NR terminal to disable LTE neighbor cell CRS interference suppression. Alternatively, the NR base station may, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, determine that the NR terminal supports LTE neighbor cell CRS interference suppression based on blind detection and that the LTE neighbor cell has CRS interference to the NR cell where the NR terminal is currently located, and then send enable control information for enabling LTE neighbor cell CRS interference suppression and / or LTE neighbor cell CRS information to the NR terminal. Alternatively, the NR base station may determine, based on the LTE neighbor cell CRS interference suppression capability information of the NR terminal and the LTE neighbor cell information of the NR cell where the NR terminal is currently located, whether the NR terminal supports LTE neighbor cell CRS interference suppression, does not support LTE neighbor cell CRS interference suppression based on blind detection, and the LTE neighbor cell causes CRS interference to the NR cell where the NR terminal is currently located, and then send LTE neighbor cell CRS information to the NR terminal.

12. The method according to any one of claims 9-11, characterized in that, The LTE neighbor cell CRS interference suppression capability information also includes one or more of the following: Does the NR terminal support LTE neighbor cell CRS interference suppression? When the new radio subcarrier spacing is 30k, does the NR terminal support LTE neighbor cell CRS interference suppression? Does the NR terminal support LTE neighbor cell CRS interference suppression in asynchronous systems? 13. The method according to claim 12, characterized in that, The numerical value indicating whether an NR terminal supports LTE neighbor cell CRS interference suppression represents whether the NR terminal supports LTE neighbor cell CRS interference suppression, the number of LTE neighbor cells that the NR terminal can support for LTE neighbor cell CRS interference suppression, or the number of carrier units that the NR terminal can support for simultaneous LTE neighbor cell CRS interference suppression in carrier aggregation scenarios.

14. The method according to any one of claims 9-11, characterized in that, The enable control information for LTE neighbor cell CRS interference suppression is sent via lte-CRS-ToMatchAround signaling or other RRC signaling besides lte-CRS-ToMatchAround signaling.

15. The method according to any one of claims 9-11, characterized in that, in, If the duplex mode is TDD, the LTE neighbor cell CRS information also includes uplink and downlink subframe ratio information.

16. The method according to any one of claims 9-11, characterized in that, When the indication information includes LTE neighbor cell CRS information, the NR base station sends LTE neighbor cell CRS interference suppression related indication information to the NR terminal, including: The NR base station sends a list containing one or more arrays to the NR terminal via RRC signaling. Each array in the list indicates the CRS information of LTE neighboring cells known from the network side that have CRS interference to the NR cell where the NR terminal is currently located, so as to instruct the NR terminal to enable CRS interference suppression for the corresponding LTE neighboring cells. Alternatively, the NR base station may send release information for the entire list or a portion of the array to the NR terminal via RRC signaling, instructing the NR terminal to release the list or a portion of the array and disable CRS interference suppression for the corresponding LTE neighboring cells.

17. An NR base station, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to perform the method of any one of claims 9-16 based on instructions stored in the memory.

18. An NR terminal, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to perform the method of any one of claims 1-8 based on instructions stored in the memory.

19. A communication system, comprising: The NR base station as described in claim 17; as well as The NR terminal as described in claim 18.

20. A non-transitory computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements the steps of the method according to any one of claims 1-16.

Images