Information interaction method and device

Abstract

The application provides an information interaction method and device, and belongs to the technical field of wireless communication. The information interaction method comprises the following steps: sending first information to a second base station or receiving the first information sent by the second base station, wherein the first information comprises at least one of RRC control information, SUL uplink RLC layer shunt data, MAC layer scheduling and HARQ timing; wherein the first base station is one of a base station corresponding to a SUL carrier and a base station corresponding to a non-SUL carrier, and the second base station is the other one of the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier. The application defines the control information and data information exchanged between the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier, so that the terminal can work in the non-SUL carrier and the SUL carrier are not in the same station scene, and the uplink performance of the cell edge and the uplink throughput of the user are improved.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to an information interaction method and device. Background Technology

[0002] Compared to downlink, uplink coverage is more easily limited, making the need for low frequencies more urgent. In this case, it is advisable to refarm 900 / 1800 / F / A / E for 5G and use the full uplink spectrum to supplement the uplink (SUL) for uplink enhancement. For existing or potential 5G frequencies, such as 4.9GHz / 6GHz / millimeter wave, it is advisable to use TDD+SUL (where TDD stands for Time Division Duplexing).

[0003] Related technologies define SUL carriers by binding downlink and uplink carriers one-to-one, primarily based on the fact that TDD+SUL is a co-site scenario. However, considering further reducing network construction costs and taking into account the differences in uplink and downlink coverage between TDD and SUL carriers, the deployment form is highly likely to be SUL + N (N>=1) TDD non-co-site solutions. To implement a non-co-site solution, it is necessary to clarify the technologies related to inter-site interaction. Summary of the Invention

[0004] In view of this, the present invention provides an information interaction method and device to solve the problem that the technology related to the interaction between SUL carriers and non-SUL carriers in non-co-station locations is still unclear.

[0005] To address the aforementioned technical problems, in a first aspect, the present invention provides an information interaction method applied to a first base station, comprising:

[0006] Sending first information to or receiving first information sent by the second base station, wherein the first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing;

[0007] Wherein, the first base station is one of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier, and the second base station is the other of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier.

[0008] Optionally, at least one of the following includes: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink / downlink scheduling HARQ timing, uplink control information, SUL uplink channel quality related information, SUL uplink / RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information.

[0009] Optionally, sending the first information to the second base station or receiving the first information sent by the second base station includes:

[0010] The first information is sent to or received from the second base station via the NG interface and / or Xn interface.

[0011] Optionally, the system message includes SUL channel configuration information, wherein the SUL channel includes at least one of PUCCH, PUSCH, and PRACH.

[0012] Optionally, the distance between the first base station and the second base station is less than a preset value, which is determined based on the length of the cyclic prefix.

[0013] Optionally, the first base station is the base station corresponding to the non-SUL carrier;

[0014] The method further includes:

[0015] Send timing advance to the terminal.

[0016] Optionally, the timing advance is the larger of the first timing advance and the second timing advance;

[0017] or,

[0018] The timing advance includes a first timing advance and a second timing advance;

[0019] Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0020] Optionally, the method further includes:

[0021] The terminal receives capability information reported by the terminal, which indicates whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal.

[0022] Optionally, the terminal is a terminal that supports carrier aggregation (CA) and / or dual connectivity (DC). The dual connectivity includes dual connectivity NR-DC of the new radio (NR) system, EN-DC with the LTE base station as the master station and the new radio base station as the slave station, and NE-DC with the new radio base station as the master station and the LTE base station as the slave station.

[0023] Optionally, for terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, and the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information.

[0024] For NR CA / NR-DC band combinations, if the band combination contains more than one band entry, the terminal supports different timing advances on different band entries; if none exist, the terminal only supports one timing advance group for the NR part.

[0025] For terminals that support NR-DC, multiple timing advance groups are supported.

[0026] Secondly, the present invention also provides a first base station, comprising:

[0027] The information interaction module is used to send first information to the second base station or receive the first information sent by the second base station. The first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing.

[0028] Wherein, the first base station is one of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier, and the second base station is the other of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier.

[0029] Optionally, at least one of the following includes: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink / downlink scheduling HARQ timing, uplink control information, SUL uplink channel quality related information, SUL uplink / RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information.

[0030] Optionally, the information interaction module is used to send the first information to the second base station or receive the first information sent by the second base station through the NG interface and / or Xn interface.

[0031] Optionally, the system message includes SUL channel configuration information, wherein the SUL channel includes at least one of PUCCH, PUSCH, and PRACH.

[0032] Optionally, the distance between the first base station and the second base station is less than a preset value, which is determined based on the length of the cyclic prefix.

[0033] Optionally, the first base station is the base station corresponding to the non-SUL carrier;

[0034] The first base station also includes:

[0035] The sending module is used to send timing advance to the terminal.

[0036] Optionally, the timing advance is the larger of the first timing advance and the second timing advance;

[0037] or,

[0038] The timing advance includes a first timing advance and a second timing advance;

[0039] Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0040] Optionally, the first base station further includes:

[0041] The receiving module is used to receive capability information reported by the terminal, wherein the capability information is used to indicate whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal.

[0042] Optionally, the terminal is a terminal that supports carrier aggregation (CA) and / or dual connectivity (DC). The dual connectivity includes dual connectivity NR-DC of the new radio (NR) system, EN-DC with the LTE base station as the master station and the new radio base station as the slave station, and NE-DC with the new radio base station as the master station and the LTE base station as the slave station.

[0043] Optionally, for terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, and the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information.

[0044] For NR CA / NR-DC band combinations, if the band combination contains more than one band entry, the terminal supports different timing advances on different band entries; if none exist, the terminal only supports one timing advance group for the NR part.

[0045] For terminals that support NR-DC, multiple timing advance groups are supported.

[0046] Thirdly, the present invention also provides a first base station, comprising: a transceiver and a processor;

[0047] The transceiver is used to send first information to the second base station or receive the first information sent by the second base station. The first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing.

[0048] Wherein, the first base station is one of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier, and the second base station is the other of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier.

[0049] Optionally, at least one of the following includes: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink / downlink scheduling HARQ timing, uplink control information, SUL uplink channel quality related information, SUL uplink / RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information.

[0050] Optionally, the transceiver is configured to send the first information to the second base station or receive the first information sent by the second base station via the NG interface and / or the Xn interface.

[0051] Optionally, the system message includes SUL channel configuration information, wherein the SUL channel includes at least one of PUCCH, PUSCH, and PRACH.

[0052] Optionally, the distance between the first base station and the second base station is less than a preset value, which is determined based on the length of the cyclic prefix.

[0053] Optionally, the first base station is the base station corresponding to the non-SUL carrier;

[0054] The transceiver is also used to send timing advance to the terminal.

[0055] Optionally, the timing advance is the larger of the first timing advance and the second timing advance;

[0056] or,

[0057] The timing advance includes a first timing advance and a second timing advance;

[0058] Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0059] Optionally, the transceiver is further configured to receive capability information reported by the terminal, the capability information being used to indicate whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal.

[0060] Optionally, the terminal is a terminal that supports carrier aggregation (CA) and / or dual connectivity (DC). The dual connectivity includes dual connectivity NR-DC of the new radio (NR) system, EN-DC with the LTE base station as the master station and the new radio base station as the slave station, and NE-DC with the new radio base station as the master station and the LTE base station as the slave station.

[0061] Optionally, for terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, and the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information.

[0062] For NR CA / NR-DC band combinations, if the band combination contains more than one band entry, the terminal supports different timing advances on different band entries; if none exist, the terminal only supports one timing advance group for the NR part.

[0063] For terminals that support NR-DC, multiple timing advance groups are supported.

[0064] Fourthly, the present invention also provides a first base station, including a memory, a processor, and a program stored in the memory and executable on the processor; when the processor executes the program, it implements the steps in any of the above-described information interaction methods.

[0065] In a ninth aspect, the present invention also provides a readable storage medium having a program stored thereon, which, when executed by a processor, implements the steps in any of the above-described information interaction methods.

[0066] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0067] The embodiments of the present invention clarify the control information and data information exchanged between the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier, enabling the terminal to work in a scenario where the SUL carrier and the non-SUL carrier do not co-locate, thereby improving the uplink performance at the cell edge and the uplink throughput of users. Attached Figure Description

[0068] Figure 1 This is a flowchart illustrating an information interaction method according to Embodiment 1 of the present invention;

[0069] Figure 2 This is a schematic diagram of a scenario in which an SUL carrier and a non-SUL carrier do not co-locate in an embodiment of the present invention;

[0070] Figure 3 This is one of the schematic diagrams illustrating the interaction information between the Xn interface of a SUL carrier and a non-SUL carrier in a non-co-station manner according to an embodiment of the present invention;

[0071] Figure 4 This is a second schematic diagram of Xn interface interaction information between SUL carrier and non-SUL carrier in an embodiment of the present invention.

[0072] Figure 5 This is a schematic diagram of a timing advance adjustment in an embodiment of this application;

[0073] Figure 6 This is a schematic diagram of another timing advance adjustment in an embodiment of this application;

[0074] Figure 7 This is a schematic diagram of the structure of a first base station according to Embodiment 2 of the present invention;

[0075] Figure 8 This is a schematic diagram of the structure of a first base station according to Embodiment 3 of the present invention;

[0076] Figure 9 This is a schematic diagram of the structure of a first base station in Embodiment 4 of the present invention. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0078] Please see Figure 1 , Figure 1 This is a flowchart illustrating an information interaction method provided in Embodiment 1 of the present invention. The method is applied to a first base station and includes the following steps:

[0079] Step 11: Send first information to the second base station or receive the first information sent by the second base station. The first information includes at least one of Radio Resource Control (RRC) information, SUL uplink Radio Link Control (RLC) layer offloading data, and Media Access Control (MAC) layer scheduling and Hybrid Automatic Repeat reQuest (HARQ) timing. SUL uplink RLC layer offloading data can also be referred to as RLC layer uplink offloading data.

[0080] The first base station is one of the base stations corresponding to the SUL carrier and the base stations corresponding to the non-SUL (i.e., NSUL) carrier (or UL carrier), and the second base station is the other of the base stations corresponding to the SUL carrier and the non-SUL carrier. The non-SUL carrier can be, for example, a TDD carrier.

[0081] The embodiments of the present invention clarify the control information and data information exchanged between the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier, enabling the terminal to work in a scenario where the SUL carrier and the non-SUL carrier do not co-locate, thereby improving the uplink performance at the cell edge and the uplink throughput of users.

[0082] The following example illustrates the above information exchange method.

[0083] Optionally, at least one of the following includes system messages, messages during random access, paging messages, location update information, RRC resume information, uplink / downlink scheduling HARQ timing, uplink control information (UCI), SUL uplink channel quality information, SUL uplink / RLC layer offloading data, uplink power control information, radio link monitoring (RLM) information, and mobility management information.

[0084] In the first information, system messages, messages during random access, paging messages, and / or location update information are information that the first base station and the second base station need to exchange when the terminal is operating in idle mode. In the first information, at least one of the following is information that the first base station and the second base station need to exchange when the terminal is operating in connected mode: uplink / downlink scheduling HARQ timing, uplink control information, SUL uplink channel quality information, SUL uplink RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information.

[0085] It should be noted that SUL uplink channel quality-related information includes the Sounding Reference Signal (SRS) and / or the Signal to Interference plus Noise Ratio (SINR).

[0086] In this embodiment of the invention, each message that needs to be exchanged between the first base station and the second base station, including RRC control signaling, RLC layer uplink offloading data, and MAC layer scheduling and HARQ timing, introduces interaction latency relative to the shared baseband board of the Building Baseband Unit (BBU), thereby affecting scheduling and performance. Specifically, the timeliness of inter-station interaction may affect base station scheduling timing, transmission and processing latency, and may lead to performance loss due to excessive interaction latency (referencing LTE cross-site carrier aggregation (CA) performance reduction of up to about 30%, or excessively high K1 / K2 parameter settings, limiting the HARQ process and preventing full scheduling). Among these, transmission latency is affected by the transmission architecture deployed between base stations (e.g., whether it is a centralized / cloud-radio access network (C-RAN)), node location, number, and transmission load, and there is a potential possibility that low-latency characteristics cannot be supported (e.g., mini slots).

[0087] In scenarios where the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier are not co-located, higher bandwidth requirements are placed on the NG interface and / or Xn interface due to the need for interaction of control and data information. Therefore, transmission modification and interface upgrade are required.

[0088] Optionally, sending the first information to the second base station or receiving the first information sent by the second base station includes:

[0089] The first information is sent to or received from the second base station via the NG interface and / or Xn interface.

[0090] In other words, the first base station and the second base station can interact with the first information through the NG interface, or through the Xn interface, or simultaneously use both the NG interface and the Xn interface to interact with the first information.

[0091] The NG interface is the interface between the base station and the core network. In other words, the first base station and the second base station can exchange the first information through the core network.

[0092] Optionally, the system message includes SUL channel configuration information, wherein the SUL channel includes at least one of the Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH), and Physical Random Access Channel (PRACH). In other words, the system message includes SUL channel configuration PUCCH / PUSCH and access PRACH related configurations.

[0093] Please see Figure 2 The following example illustrates the interaction process of control and data information between the base station corresponding to the SUL carrier (frequency band) and the base station corresponding to the TDD carrier (4.9GHz band) in a non-co-site scenario. Please refer to [link / reference]. Figure 3 and Figure 4 Assuming the subcarrier spacing of the SUL and TDD carriers is the same, if the terminal receives downlink data in time slot N at station B, it determines the PUCCH feedback position, K1 parameter, and related information of station A through the MAC layer interaction scheduling and HARQ information between station B and station A, and sends a feedback ACK / NACK to station A in time slot N+K1. Although the K1 parameter configuration is flexible and can be configured from 0 to 15, the interaction delay between station B and station A still needs to be considered. Conversely, if the terminal receives uplink scheduling DCI control information from station B in time slot N, it determines the PUSCH transmission position, K2 parameter, and related information of station A through the MAC layer interaction scheduling and HARQ information between station B and station A, and sends uplink PUSCH data to station A in time slot N+K2. The offloaded data is transmitted from station A to station B through the RLC layer. Although the K2 parameter configuration is flexible and can be configured from 0 to 15, the interaction delay between station B and station A still needs to be considered. For non-co-site deployments, it is still necessary to avoid excessive interaction latency, otherwise it may lead to the inability to obtain K1 / K2 support parameter configurations or HARQ process limitations.

[0094] Optionally, the distance between the first base station and the second base station is less than a preset value, which is determined based on the length of the cyclic prefix (CP).

[0095] If the distance between the first base station and the second base station exceeds the coverage area of ​​the CP, it is not recommended to enable the SUL scheme.

[0096] For example, if the frequency bands of the first base station and the second base station are 4.9GHz and 2.3GHz respectively, and the CP length is 2.4~2.6μs@30kHz, the distance between the first base station and the second base station should be controlled within 720~780m. Beyond 720~780m, the CP coverage range is exceeded. At this time, the uplink coverage overlap area of ​​4.9GHz and 2.3GHz is relatively low, so it is not recommended to enable the SUL scheme.

[0097] In addition, the smaller distance between the first base station and the second base station can also reduce the transmission delay of the first information.

[0098] Optionally, the first base station is the base station corresponding to the non-SUL carrier;

[0099] The method further includes:

[0100] Send the timing advance (TA) to the terminal.

[0101] For terminals in non-co-site SUL scenarios, the first base station and the second base station respectively measure the TA (Tracking Ability) of the terminal camped on the SUL carrier or the non-SUL carrier, and the base station corresponding to the non-SUL carrier sends the TAC (Tracking Ability Adjustment) amount through the downlink carrier.

[0102] In one optional implementation, the timing advance is the larger of a first timing advance and a second timing advance; wherein the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0103] In this embodiment, to address the TA inconsistency caused by the different paths from the terminal to the base station corresponding to the non-SUL carrier and the base station corresponding to the SUL carrier, the same TA is used for adjustment. When the SUL carrier is ahead of the non-SUL carrier, the TA delay is adjusted according to the SUL carrier measurement results; otherwise, the TA delay is adjusted according to the non-SUL carrier measurement results.

[0104] In related technologies, a timing advance mechanism is introduced to ensure that information sent by different terminals in a cell reaches the base station at the same time. Please refer to [link to relevant documentation]. Figure 5 and 6 In the upper part, for scenarios where SUL carriers and non-SUL carriers are not co-located, because the paths from the terminal to the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier are different, when the terminal performs scheduling and data transmission on either the non-co-located SUL carrier or the non-SUL carrier, the transmission time of one carrier may be ahead of the reception window set by the base station on the other carrier, which may cause some valid data within the OFDM symbol to be truncated. Please refer to [link to relevant documentation]. Figure 5 and Figure 6The problem can be solved by determining the TA using the TA determination method provided in the embodiments of this application for the lower half of the problem.

[0105] In another optional embodiment, the timing advance includes a first timing advance and a second timing advance.

[0106] Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0107] In this embodiment of the application, to address the inconsistency in TA caused by the different paths from the terminal to the base station corresponding to the non-SUL carrier and the base station corresponding to the SUL carrier, different TAs are adjusted based on the measurement results of the SUL carrier and the non-SUL carrier respectively.

[0108] Optionally, the method further includes:

[0109] The terminal receives capability information reported by the terminal, which indicates whether the terminal supports multiple Timing Advance Groups (TAGs) and / or the number of Timing Advance Groups supported by the terminal.

[0110] In this embodiment of the application, terminal capability reporting is defined, and the base station instructs the terminal to report the signal used to measure TA. The base station supports multiple TAGs.

[0111] Optionally, the terminal is a terminal that supports carrier aggregation (CA) and / or dual connectivity (DC). The dual connectivity includes dual connectivity NR-DC of the new radio NR system, EN-DC with the LTE base station as the master station and the new radio base station as the slave station, and NE-DC with the new radio base station as the master station and the LTE base station as the slave station.

[0112] Optionally, for terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, and the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information.

[0113] For NR CA / NR-DC band combinations, if the band combination contains more than one band entry, the terminal supports different timing advances on different band entries; if none exist, the terminal only supports one timing advance group for the NR part.

[0114] For terminals that support NR-DC, multiple timing advance groups are supported.

[0115] Specifically, the number of timing advance groups supported by the terminal is defined as follows:

[0116]

[0117] This invention provides a process for inter-site interaction and TA acquisition related to the SUL working mechanism (including idle state and connected state) in non-co-site scenarios. In other words, this application makes it possible for SUL and non-SUL carriers (or UL carriers) to work in non-co-site scenarios by defining inter-site interaction information and improving the TA working mechanism.

[0118] In other optional implementations, the process of sending the first information to the second base station or receiving the first information sent by the second base station may be omitted, and only include: the first base station sending a timing advance to the terminal, wherein the first base station is the base station corresponding to the non-SUL carrier. Optionally, the timing advance is the larger of a first timing advance and a second timing advance.

[0119] or,

[0120] The timing advance includes a first timing advance and a second timing advance;

[0121] Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0122] Optionally, the method further includes:

[0123] The terminal receives capability information reported by the terminal, which indicates whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal.

[0124] Optionally, the terminal is a terminal that supports carrier aggregation (CA) and / or dual connectivity (DC). The dual connectivity includes dual connectivity NR-DC of the new radio (NR) system, EN-DC with the LTE base station as the master station and the new radio base station as the slave station, and NE-DC with the new radio base station as the master station and the LTE base station as the slave station.

[0125] Optionally, for terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, and the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information.

[0126] For NR CA / NR-DC band combinations, if the band combination contains more than one band entry, the terminal supports different timing advances on different band entries; if none exist, the terminal only supports one timing advance group for the NR part.

[0127] For terminals that support NR-DC, multiple timing advance groups are supported.

[0128] Please see Figure 7 , Figure 7 This is a schematic diagram of the structure of a first base station provided in Embodiment 2 of the present invention. The first base station 70 includes:

[0129] The information interaction module 71 is used to send first information to the second base station or receive the first information sent by the second base station. The first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing.

[0130] Wherein, the first base station is one of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier, and the second base station is the other of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier.

[0131] The embodiments of the present invention clarify the control information and data information exchanged between the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier, enabling the terminal to work in a scenario where the SUL carrier and the non-SUL carrier do not co-locate, thereby improving the uplink performance at the cell edge and the uplink throughput of users.

[0132] Optionally, at least one of the following includes: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink / downlink scheduling HARQ timing, uplink control information, SUL uplink channel quality related information, SUL uplink / RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information.

[0133] Optionally, the information interaction module 71 is used to send the first information to the second base station or receive the first information sent by the second base station through the NG interface and / or Xn interface.

[0134] Optionally, the system message includes SUL channel configuration information, wherein the SUL channel includes at least one of PUCCH, PUSCH, and PRACH.

[0135] Optionally, the distance between the first base station 70 and the second base station is less than a preset value, which is determined based on the length of the cyclic prefix.

[0136] Optionally, the first base station is the base station corresponding to the non-SUL carrier;

[0137] The first base station 70 also includes:

[0138] The sending module is used to send timing advance to the terminal.

[0139] Optionally, the timing advance is the larger of the first timing advance and the second timing advance;

[0140] or,

[0141] The timing advance includes a first timing advance and a second timing advance;

[0142] Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0143] Optionally, the first base station further includes:

[0144] The receiving module is used to receive capability information reported by the terminal, wherein the capability information is used to indicate whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal.

[0145] Optionally, the terminal is a terminal that supports carrier aggregation (CA) and / or dual connectivity (DC). The dual connectivity includes dual connectivity NR-DC of the new radio (NR) system, EN-DC with the LTE base station as the master station and the new radio base station as the slave station, and NE-DC with the new radio base station as the master station and the LTE base station as the slave station.

[0146] Optionally, for terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, and the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information.

[0147] For NR CA / NR-DC band combinations, if the band combination contains more than one band entry, the terminal supports different timing advances on different band entries; if none exist, the terminal only supports one timing advance group for the NR part.

[0148] For terminals that support NR-DC, multiple timing advance groups are supported.

[0149] The embodiments of the present invention are product embodiments corresponding to the method embodiment one described above, and therefore will not be repeated here. For details, please refer to the embodiment one described above.

[0150] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a first base station provided in Embodiment 3 of the present invention. The first base station 80 includes: a transceiver 81 and a processor 82.

[0151] The transceiver 81 is used to send first information to the second base station or receive the first information sent by the second base station. The first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing.

[0152] Wherein, the first base station is one of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier, and the second base station is the other of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier.

[0153] The embodiments of the present invention clarify the control information and data information exchanged between the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier, enabling the terminal to work in a scenario where the SUL carrier and the non-SUL carrier do not co-locate, thereby improving the uplink performance at the cell edge and the uplink throughput of users.

[0154] Optionally, at least one of the following includes: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink / downlink scheduling HARQ timing, uplink control information, SUL uplink channel quality related information, SUL uplink / RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information.

[0155] Optionally, the transceiver 81 is configured to send the first information to the second base station or receive the first information sent by the second base station via the NG interface and / or the Xn interface.

[0156] Optionally, the system message includes SUL channel configuration information, wherein the SUL channel includes at least one of PUCCH, PUSCH, and PRACH.

[0157] Optionally, the distance between the first base station and the second base station is less than a preset value, which is determined based on the length of the cyclic prefix.

[0158] Optionally, the first base station is the base station corresponding to the non-SUL carrier;

[0159] The transceiver 81 is also used to send timing advance to the terminal.

[0160] Optionally, the timing advance is the larger of the first timing advance and the second timing advance;

[0161] or,

[0162] The timing advance includes a first timing advance and a second timing advance;

[0163] Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0164] Optionally, the transceiver 81 is further configured to receive capability information reported by the terminal, the capability information being used to indicate whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal.

[0165] Optionally, the terminal is a terminal that supports carrier aggregation (CA) and / or dual connectivity (DC). The dual connectivity includes dual connectivity NR-DC of the new radio (NR) system, EN-DC with the LTE base station as the master station and the new radio base station as the slave station, and NE-DC with the new radio base station as the master station and the LTE base station as the slave station.

[0166] Optionally, for terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, and the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information.

[0167] For NR CA / NR-DC band combinations, if the band combination contains more than one band entry, the terminal supports different timing advances on different band entries; if none exist, the terminal only supports one timing advance group for the NR part.

[0168] For terminals that support NR-DC, multiple timing advance groups are supported.

[0169] The embodiments of the present invention are product embodiments corresponding to the method embodiment one described above, and therefore will not be repeated here. For details, please refer to the embodiment one described above.

[0170] Please see Figure 9 , Figure 9 This is a schematic diagram of the structure of a first base station according to Embodiment 4 of the present invention. The first base station 90 includes a processor 91, a memory 92, and a program stored in the memory 92 and executable on the processor 91. When the processor 91 executes the program, it performs the following steps:

[0171] Sending first information to or receiving first information sent by the second base station, wherein the first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing;

[0172] Wherein, the first base station is one of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier, and the second base station is the other of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier.

[0173] The embodiments of the present invention clarify the control information and data information exchanged between the base station corresponding to the SUL carrier and the base station corresponding to the non-SUL carrier, enabling the terminal to work in a scenario where the SUL carrier and the non-SUL carrier do not co-locate, thereby improving the uplink performance at the cell edge and the uplink throughput of users.

[0174] Optionally, at least one of the following includes: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink / downlink scheduling HARQ timing, uplink control information, SUL uplink channel quality related information, SUL uplink / RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information.

[0175] Optionally, when the processor 91 executes the program, it may also perform the following steps:

[0176] The step of sending the first information to the second base station or receiving the first information sent by the second base station includes:

[0177] The first information is sent to or received from the second base station via the NG interface and / or Xn interface.

[0178] Optionally, the system message includes SUL channel configuration information, wherein the SUL channel includes at least one of PUCCH, PUSCH, and PRACH.

[0179] Optionally, the distance between the first base station and the second base station is less than a preset value, which is determined based on the length of the cyclic prefix.

[0180] Optionally, the first base station is the base station corresponding to the non-SUL carrier;

[0181] Optionally, when the processor 91 executes the program, it may also perform the following steps:

[0182] Send timing advance to the terminal.

[0183] Optionally, the timing advance is the larger of the first timing advance and the second timing advance;

[0184] or,

[0185] The timing advance includes a first timing advance and a second timing advance;

[0186] Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

[0187] Optionally, when the processor 91 executes the program, it may also perform the following steps:

[0188] The terminal receives capability information reported by the terminal, which indicates whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal.

[0189] Optionally, the terminal is a terminal that supports carrier aggregation (CA) and / or dual connectivity (DC). The dual connectivity includes dual connectivity NR-DC of the new radio (NR) system, EN-DC with the LTE base station as the master station and the new radio base station as the slave station, and NE-DC with the new radio base station as the master station and the LTE base station as the slave station.

[0190] Optionally, for terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, and the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information.

[0191] For NR CA / NR-DC band combinations, if the band combination contains more than one band entry, the terminal supports different timing advances on different band entries; if none exist, the terminal only supports one timing advance group for the NR part.

[0192] For terminals that support NR-DC, multiple timing advance groups are supported.

[0193] The specific working process of this invention embodiment is the same as that in the method embodiment one above, so it will not be repeated here. For details, please refer to the description of the method steps in the method embodiment one above.

[0194] Embodiment 5 of the present invention provides a readable storage medium storing a program thereon, which, when executed by a processor, implements the steps of any of the information interaction methods in Embodiment 1 above. For details, please refer to the description of the method steps in the corresponding embodiments above.

[0195] The base station in this embodiment of the invention can be a base station (BTS) in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB or eNodeB) in LTE, a relay station or access point, or a base station in a future 5G network, etc., and is not limited thereto.

[0196] In this embodiment of the invention, the terminal can be a wireless terminal, which can be a device that provides voice and / or other service data connectivity to a user, a handheld device with wireless connectivity, or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) or a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminals can also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile devices, remote stations, remote terminals, access terminals, user terminals, user agents, and terminals (user devices or user equipment), without any specific definition here.

[0197] The aforementioned readable storage media includes computer-readable storage media. Computer-readable storage media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device.

[0198] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An information exchange method, applied to a first base station, characterized in that, include: Sending first information to or receiving first information sent by the second base station, wherein the first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing; Wherein, the first base station is one of the base station corresponding to the SUL carrier and the base station not corresponding to the SUL carrier, and the second base station is the other of the base station corresponding to the SUL carrier and the base station not corresponding to the SUL carrier. The RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing information include at least one of the following: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink and downlink scheduling HARQ timing information, uplink control information, SUL uplink channel quality related information, SUL uplink RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information. It also includes: receiving capability information reported by the terminal, the capability information being used to indicate whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal; The terminal is a terminal that supports dual-connectivity DC, and the dual connectivity includes EN-DC with a Long Term Evolution (LTE) base station as the master station and a New Radio Base Station as the auxiliary station, and NE-DC with a New Radio Base Station as the master station and a Long Term Evolution (LTE) base station as the auxiliary station. For terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, while the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information. The first base station and the second base station are not co-located.

2. The method according to claim 1, characterized in that, The step of sending the first information to the second base station or receiving the first information sent by the second base station includes: The first information is sent to or received from the second base station via the NG interface and / or Xn interface.

3. The method according to claim 1, characterized in that, The system message includes SUL channel configuration information, and the SUL channel includes at least one of PUCCH, PUSCH, and PRACH.

4. The method according to claim 1, characterized in that, The distance between the first base station and the second base station is less than a preset value, which is determined based on the length of the cyclic prefix.

5. The method according to claim 1 or 4, characterized in that, The first base station is the base station corresponding to the non-SUL carrier; The method further includes: Send timing advance to the terminal.

6. The method according to claim 5, characterized in that, The timing advance is the larger of the first timing advance and the second timing advance; or, The timing advance includes a first timing advance and a second timing advance; Wherein, the first timing advance is the timing advance corresponding to the SUL carrier, and the second timing advance is the timing advance corresponding to the non-SUL carrier.

7. A first base station, characterized in that, include: The information interaction module is used to send first information to the second base station or receive the first information sent by the second base station. The first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing. Wherein, the first base station is one of the base station corresponding to the SUL carrier and the base station not corresponding to the SUL carrier, and the second base station is the other of the base station corresponding to the SUL carrier and the base station not corresponding to the SUL carrier. The RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing information include at least one of the following: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink and downlink scheduling HARQ timing information, uplink control information, SUL uplink channel quality related information, SUL uplink RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information. The first base station is further configured to receive capability information reported by the terminal, wherein the capability information is used to indicate whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal. The terminal is a terminal that supports dual-connectivity DC, and the dual connectivity includes EN-DC with a Long Term Evolution (LTE) base station as the master station and a New Radio Base Station as the auxiliary station, and NE-DC with a New Radio Base Station as the master station and a Long Term Evolution (LTE) base station as the auxiliary station. For terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, while the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information. The first base station and the second base station are not co-located.

8. A first base station, characterized in that, include: Transceiver and processor; The transceiver is used to send first information to the second base station or receive the first information sent by the second base station. The first information includes at least one of RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing. Wherein, the first base station is one of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier, and the second base station is the other of the base stations corresponding to the SUL carrier and the base stations not corresponding to the SUL carrier; at least one of the RRC control information, SUL uplink RLC layer offloading data, and MAC layer scheduling and HARQ timing includes at least one of the following: system messages, messages during random access, paging messages, location update information, RRC recovery related information, uplink and downlink scheduling HARQ timing, uplink control information, SUL uplink channel quality related information, SUL uplink RLC layer offloading data, uplink power control information, radio link monitoring information, and mobility management information; The first base station is further configured to receive capability information reported by the terminal, wherein the capability information is used to indicate whether the terminal supports multiple timing advance groups and / or the number of timing advance groups supported by the terminal. The terminal is a terminal that supports dual-connectivity DC, and the dual connectivity includes EN-DC with a Long Term Evolution (LTE) base station as the master station and a New Radio Base Station as the auxiliary station, and NE-DC with a New Radio Base Station as the master station and a Long Term Evolution (LTE) base station as the auxiliary station. For terminals that support EN-DC and / or NE-DC, the capability information indicates the number of timing advance groups for NR cell groups, while the number of timing advance groups for LTE primary cell groups is indicated by LTE timing advance group capability information. The first base station and the second base station are not co-located.

9. A first base station, comprising a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that, When the processor executes the program, it implements the steps in the information interaction method as described in any one of claims 1 to 6.

10. A readable storage medium having a program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps in the information interaction method as described in any one of claims 1 to 6.

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