A method and device used in a node for wireless communication

Abstract

The present invention discloses a method and apparatus in a node used for wireless communication. A first node generates first information, and the first information indicates a cache status of a first service cell group; when the first service cell group is in an active state, the first information is sent through the first service cell group; when the first service cell group is in an inactive state, the first information is sent through the second service cell group; wherein the first service cell group and the second service cell group are SCG and MCG, respectively. The present application activates the first cell group by timely sending the cache status through the active MCG, thereby reducing the waiting delay of data transmission on the first service cell group SCG.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a transmission scheme and device related to multicast and broadcast in wireless communication. Background Art

[0002] In the future, the application scenarios of wireless communication systems will become more and more diversified, and different application scenarios will put forward different performance requirements for the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to study the new radio (NR) (or Fifth Generation, 5G) technology, and the NR WI (Work Item) was passed at the 3GPP RAN #75 plenary meeting, and the standardization work on NR began.

[0003] Dual connectivity is one of the features of NR. By connecting and communicating with two serving cell groups at the same time, the UE can effectively improve the data transmission rate and connection reliability. The two serving cell groups are MCG and SCG. Usually, SCG plays a role in load sharing.

[0004] At the 3GPP RAN#86 plenary meeting, the WI (Work Item) of Further Multi-RAT Dual-Connectivity enhancements was passed. One of the topics is to study the method of deactivating and activating SCG. For example, when SCG does not transmit data, SCG can be deactivated; accordingly, after SCG is deactivated, users can stop monitoring the downlink control channel of SCG, thereby saving UE energy consumption. Summary of the invention

[0005] The inventors have found through research that after the SCG is deactivated, there is no solution on how to activate the SCG when the UE has uplink data to be transmitted.

[0006] In view of the above problems, the present application discloses a solution. It should be noted that, although the above description uses the scenario of communication between a network device and a terminal device as an example, the present application is also applicable to other communication scenarios (such as scenarios of communication between terminals), and achieves similar technical effects. In addition, the use of a unified solution in different scenarios (including but not limited to scenarios of communication between a network device and a terminal and communication between terminals) also helps to reduce hardware complexity and cost. In the absence of conflict, the embodiments in the first node of the present application and the features in the embodiments can be applied to the second node, and vice versa. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be arbitrarily combined with each other.

[0007] As an embodiment, the interpretation of the terminology in this application refers to the definition of the TS36 series of specification protocols of 3GPP.

[0008] As an example, the interpretation of the terms in the present application refers to the definitions of the TS38 series of specification protocols of 3GPP.

[0009] As an example, the interpretation of the terms in the present application refers to the definitions of the TS37 series of specification protocols of 3GPP.

[0010] As an embodiment, the interpretation of the terms in the present application refers to the definition of the standard protocol of IEEE (Institute of Electrical and Electronics Engineers).

[0011] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0012] generating first information, wherein the first information indicates a cache status of a first serving cell group;

[0013] When the first serving cell group is in an active state, the first information is sent through the first serving cell group; when the first serving cell group is in an inactive state, the first information is sent through the second serving cell group;

[0014] The first service cell group and the second service cell group are SCG and MCG respectively.

[0015] As an embodiment, the first information is generated when there is data to be sent in the first MAC entity.

[0016] As an embodiment, the first MAC entity corresponds to the RB between the first node and the first service cell group to which it belongs.

[0017] As an embodiment, the first MAC entity corresponds to the first service cell group.

[0018] As an embodiment, the first information is sent via RRC signaling.

[0019] As an embodiment, the first information is sent via a MAC CE (Control Element).

[0020] As an embodiment, the phrase that the first service cell group is in an active state includes: monitoring control signaling of the first service cell group.

[0021] As an embodiment, the phrase that the first service cell group is in an inactive state includes: stopping monitoring control signaling of the first service cell group.

[0022] As a sub-embodiment of the above implementation column, the control signaling of the first service cell group includes at least one of DCI, MACCE, and RRC signaling.

[0023] As a sub-embodiment of the above embodiment, the phrase monitoring the control signaling of the first serving cell group includes: monitoring the control signaling of the first serving cell group.

[0024] As a sub-embodiment of the above embodiment, the phrase monitoring the control signaling of the first service cell group includes: detecting whether the control signaling exists on a channel occupied by the control signaling of the first service cell group.

[0025] As a sub-embodiment of the above embodiment, the monitoring includes blind detection.

[0026] As a sub-embodiment of the above embodiment, the monitoring includes coherent detection of the characteristic sequence.

[0027] As a sub-embodiment of the above embodiment, the monitoring includes CRC (Cyclic Redundancy Check) check.

[0028] As an embodiment, the first information sent through the second service cell group is received by the second node; the first information sent through the first service cell group is received by the third node.

[0029] As an embodiment, the third node includes a SN (Secondary Node).

[0030] As an embodiment, the second node includes a MN (Master Node).

[0031] Specifically, according to one aspect of the present application, the above method is characterized in that it includes:

[0032] monitoring first signaling on the second serving cell group; and starting to monitor control signaling of the first serving cell group when the first signaling is detected;

[0033] The first service cell group is in an inactive state; and the first information is used to trigger the first signaling.

[0034] As an embodiment, the first signaling is used to restore the activity state of the first service cell group.

[0035] As an embodiment, after the first signaling is detected, the first service cell group is in an active state.

[0036] As an embodiment, after the first signaling is processed, the first service cell group is in an active state.

[0037] Specifically, according to one aspect of the present application, the above method is characterized in that it also includes:

[0038] When the first signaling is not detected in the first time window, sending a second SR on the first serving cell group;

[0039] The first receiver receives second signaling on the first serving cell group, where the second signaling indicates configuration information of a second channel;

[0040] The starting position of the first time window depends on the time domain resources occupied by the first information; the first information is used to trigger the second SR.

[0041] As an embodiment, the second SR is used to trigger the second signaling.

[0042] As an embodiment, the configuration information of the second channel includes air interface resources occupied by the second channel.

[0043] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second channel include time domain resources occupied by the second channel.

[0044] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second channel include frequency domain resources occupied by the second channel.

[0045] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second channel include the multiple access signature occupied by the second channel.

[0046] Specifically, according to one aspect of the present application, the above method is characterized in that it also includes:

[0047] Sending a first SR on the second serving cell group;

[0048] receiving a third signaling on the second serving cell group, where the third signaling indicates configuration information of the first channel;

[0049] Among them, the first service cell group is in an inactive state; the first information is used to trigger the first SR; the first information is transmitted on the first channel; and the air interface resources occupied by the first SR are used to determine whether the cache status indicated by the first information is for the first service cell group or the second service cell group.

[0050] As an embodiment, the first SR is used to trigger the third signaling.

[0051] As an embodiment, the configuration information of the first channel includes air interface resources occupied by the first channel.

[0052] As a sub-embodiment of the above embodiment, the air interface resources occupied by the first channel include time domain resources occupied by the first channel.

[0053] As a sub-embodiment of the above embodiment, the air interface resources occupied by the first channel include frequency domain resources occupied by the first channel.

[0054] As a sub-embodiment of the above embodiment, the air interface resources occupied by the first channel include the multiple access signature occupied by the first channel.

[0055] The present application discloses a first node used for wireless communication, comprising:

[0056] A first receiver generates first information indicating a cache status of a first serving cell group;

[0057] A first transmitter, when the first serving cell group is in an active state, sends the first information through the first serving cell group; when the first serving cell group is in an inactive state, sends the first information through the second serving cell group;

[0058] The first service cell group and the second service cell group are SCG and MCG respectively.

[0059] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0060] receiving first information through a second serving cell group;

[0061] Among them, the first information indicates the cache status of the first service cell group; the first service cell group is in an inactive state; when the first service cell group is in an active state, the first information is sent through the first service cell group; the first service cell group and the second service cell group are SCG and MCG respectively.

[0062] The present application discloses a second node used for wireless communication, comprising:

[0063] A second receiver receives the first information through a second serving cell group;

[0064] Among them, the first information indicates the cache status of the first service cell group; the first service cell group is in an inactive state; when the first service cell group is in an active state, the first information is sent through the first service cell group; the first service cell group and the second service cell group are SCG and MCG respectively.

[0065] As an embodiment, the present application has the following advantages: the first cell group is activated by timely sending the cache status by the active MCG, thereby reducing the waiting delay of data transmission on the first cell group SCG. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0067] Figure 1 A processing flow chart of a first node according to an embodiment of the present application is shown;

[0068] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0069] Figure 3 A schematic diagram showing a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application is shown;

[0070] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0071] Figure 5 A wireless signal transmission flow chart according to an embodiment of the present application is shown;

[0072] Figure 6 A wireless signal transmission flow chart according to another embodiment of the present application is shown;

[0073] Figure 7 A structural block diagram of a processing device used in a first node is shown;

[0074] Figure 8 A structural block diagram of a processing device used in a second node is shown. DETAILED DESCRIPTION

[0075] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0076] Example 1

[0077] Embodiment 1 illustrates a processing flow chart of the first node of an embodiment of the present application, as shown in the attached Figure 1 As shown in the attached Figure 1 In the example, each box represents a step. In particular, the order of the steps in the box does not represent a specific time sequence between the steps.

[0078] In Example 1, the first node in the present application generates first information in step S101, and the first information indicates the cache status of the first service cell group; in step S102, when the first service cell group is in an active state, the first information is sent through the first service cell group; in step S103, when the first service cell group is in an inactive state, the first information is sent through the second service cell group.

[0079] The first service cell group and the second service cell group are SCG and MCG respectively.

[0080] As an embodiment, the first service cell group includes at least one service cell.

[0081] As an embodiment, the second service cell group includes at least one service cell.

[0082] As an embodiment, the first information is generated when there is data to be sent in the first MAC entity.

[0083] As an embodiment, the first MAC entity corresponds to the RB between the first node and the first service cell group to which it belongs.

[0084] As an embodiment, the first MAC entity corresponds to the first service cell group.

[0085] As an embodiment, the first information is sent via RRC signaling.

[0086] As an embodiment, the first information is sent via a MAC CE (Control Element).

[0087] As an embodiment, the first information is sent via higher layer signaling.

[0088] As an embodiment, the first information is sent via UCI (Uplink Control Information).

[0089] As an embodiment, the first information is sent via inner layer signaling.

[0090] As an embodiment, the first information is sent on PUSCH (Physical Uplink Shared Channel).

[0091] As an embodiment, the first information is sent on PUCCH (Physical Uplink Control Channel).

[0092] As an embodiment, the first information includes a first logical channel group identity and a first cache size, wherein the first cache size indicates the amount of available data of the logical channel group identified by the first logical channel group identity; the first logical channel group identity is assigned to the first service cell group.

[0093] As an embodiment, the first information indicates that there is data to be transmitted for at least one cell in the first serving cell group.

[0094] As an embodiment, the first information indicates that there is uplink data to be transmitted for at least one cell in the first service cell group.

[0095] As an embodiment, the first information indicates that there is data to be transmitted for any cell in the first serving cell group.

[0096] As an embodiment, the first information indicates that there is uplink data to be transmitted for any cell in the first service cell group.

[0097] As an embodiment, the first information indicates that there is data to be transmitted for the first service cell group.

[0098] As an embodiment, the first information indicates that there is uplink data to be transmitted for the first service cell group.

[0099] As an embodiment, the phrase that the first service cell group is in an active state includes: monitoring control signaling of the first service cell group.

[0100] As an embodiment, the phrase that the first service cell group is in an active state includes: sending uplink data through the first service cell group.

[0101] As an embodiment, the phrase that the first service cell group is in an active state includes: receiving downlink data through the first service cell group.

[0102] As an embodiment, the phrase that the first service cell group is in an active state includes: monitoring control signaling of any cell in the first service cell group.

[0103] As an embodiment, the phrase that the first service cell group is in an active state includes: monitoring control signaling of a primary cell in the first service cell group.

[0104] As an embodiment, the phrase that the first service cell group is in an active state includes: sending uplink data through any cell in the first service cell group.

[0105] As an embodiment, the phrase that the first service cell group is in an active state includes: receiving downlink data through any cell in the first service cell group.

[0106] As an embodiment, the phrase that the first service cell group is in an inactive state includes: stopping monitoring control signaling of the first service cell group.

[0107] As a sub-embodiment of the above implementation column, the control signaling of the first service cell group includes at least one of DCI, MACCE, and RRC signaling.

[0108] As a sub-embodiment of the above embodiment, the phrase monitoring the control signaling of the first serving cell group includes: monitoring the control signaling of the first serving cell group.

[0109] As a sub-embodiment of the above embodiment, the phrase monitoring the control signaling of the first service cell group includes: detecting whether the control signaling exists on a channel occupied by the control signaling of the first service cell group.

[0110] As a sub-embodiment of the above embodiment, the monitoring includes blind detection.

[0111] As a sub-embodiment of the above embodiment, the monitoring includes coherent detection of the characteristic sequence.

[0112] As a sub-embodiment of the above embodiment, the monitoring includes CRC (Cyclic Redundancy Check) check.

[0113] As an embodiment, the phrase that the first service cell group is in an inactive state includes: stopping sending uplink data through the first service cell group.

[0114] As an embodiment, the phrase that the first service cell group is in an inactive state includes: stopping receiving downlink data through the first service cell group.

[0115] As an embodiment, the phrase that the first serving cell group is in an inactive state includes: only performing measurements on any cell in the first serving cell group.

[0116] As an embodiment, the phrase that the first serving cell group is in an inactive state includes: only performing measurement on a primary cell in the first serving cell group.

[0117] As an embodiment, the phrase that the first service cell group is in an inactive state includes: only monitoring control signaling of a primary cell of the first service cell group, and only performing measurements on remaining service cells of the first service cell group.

[0118] As an embodiment, the first service cell group is an SCG, and the primary cell of the first service cell group is a PSCell.

[0119] As a sub-embodiment of the above embodiment, the phrase monitoring the control signaling of the first serving cell group includes: monitoring the control signaling of the first serving cell group.

[0120] As a sub-embodiment of the above embodiment, the phrase monitoring the control signaling of the primary cell of the first serving cell group includes: detecting whether the control signaling exists on a channel occupied by the control signaling of the primary cell of the first serving cell group.

[0121] As a sub-embodiment of the above embodiment, the monitoring includes blind detection.

[0122] As a sub-embodiment of the above embodiment, the monitoring includes coherent detection of the characteristic sequence.

[0123] As a sub-embodiment of the above embodiment, the monitoring includes CRC (Cyclic Redundancy Check) check.

[0124] As a sub-embodiment of the above implementation column, the control signaling of the primary cell of the first service cell group includes at least one of DCI, MAC CE, and RRC signaling.

[0125] As an embodiment, the first information sent through the second service cell group is received by the second node; the first information sent through the first service cell group is received by the third node.

[0126] As an embodiment, the first information sent through the second service cell group is received by the second node.

[0127] As an embodiment, the first information sent through the first service cell group is received by a third node.

[0128] As an embodiment, the third node includes a SN (Secondary Node).

[0129] As an embodiment, the second node includes a MN (Master Node).

[0130] As an embodiment, the phrase of sending the first information through the second service cell group includes: sending the first information through the time-frequency resources configured by the second service cell group.

[0131] As an embodiment, the phrase sending the first information through the second service cell group includes: sending the first information through a MAC entity corresponding to the second service cell group.

[0132] As an embodiment, the phrase of sending the first information through the second service cell group includes: the first information is scrambled by the user identity assigned by the second service cell group.

[0133] As an embodiment, the phrase of sending the first information through the second service cell group includes: the first information is scrambled by the cell identity of any service cell in the second service cell group.

[0134] As an embodiment, the user identity allocated by the second service cell group is C-RNTI (cell RNTI).

[0135] As an embodiment, the number of bits contained in the user identity allocated by the second service cell group is a positive integer multiple of 8.

[0136] As an embodiment, the phrase of sending the first information through the first service cell group includes: sending the first information through the time-frequency resources configured by the first service cell group.

[0137] As an embodiment, the phrase sending the first information through the second service cell group includes: sending the first information through a MAC entity corresponding to the first service cell group.

[0138] As an embodiment, the phrase sending the first information through the first service cell group includes: the first information is scrambled by the user identity assigned by the first service cell group.

[0139] As an embodiment, the phrase of sending the first information through the first service cell group includes: the first information is scrambled by the cell identity of any service cell in the first service cell group.

[0140] As an embodiment, the user identity allocated by the first service cell group is C-RNTI (cell RNTI).

[0141] As an embodiment, the number of bits contained in the user identity allocated by the first service cell group is a positive integer multiple of 8.

[0142] As an embodiment, the present application has the following advantages: the first cell group is activated by timely sending the cache status by the active MCG, thereby reducing the waiting delay of data transmission on the first cell group SCG.

[0143] Example 2

[0144] Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in the attached Figure 2 Attached Figure 2A diagram illustrating a network architecture 200 for 5G NR, LTE (Long-Term Evolution) and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as a 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable terminology. The 5GS / EPS 200 may include one or more UEs (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet Services 230. The 5GS / EPS may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP (transmitting receiving node), or some other suitable term. gNB 203 provides an access point to 5GC / EPC 210 for UE 201. Examples of UE 201 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.gNB203 is connected to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF213. MME / AMF / SMF211 is the control node that handles signaling between UE201 and 5GC / EPC210. ​​In general, MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF212, which itself is connected to P-GW / UPF213. P-GW provides UE IP address allocation and other functions. P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-corresponding Internet protocol services, which may specifically include Internet, Intranet, IMS (IP Multimedia Subsystem) and packet-switched streaming services.

[0145] As an embodiment, the UE201 and the gNB203 are connected via a Uu interface.

[0146] As an embodiment, the gNB204 and the gNB203 are connected via an Xn interface.

[0147] As an embodiment, the gNB204 and the gNB203 are connected via an X2 interface.

[0148] As an embodiment, the wireless link from the UE201 to the NR Node B is an uplink.

[0149] As an embodiment, the wireless link from the NR Node B to UE201 is a downlink.

[0150] As an embodiment, the first node, the second node and the third node in the present application are the UE201, the gNB203 and the gNB204, respectively.

[0151] As an embodiment, the UE 201 supports secondary link transmission.

[0152] As an embodiment, the UE 201 supports the PC5 interface.

[0153] As an embodiment, the UE201 supports the Uu interface.

[0154] As an embodiment, the UE 201 supports relay transmission.

[0155] As an embodiment, the gNB203 supports the Uu interface.

[0156] As an embodiment, the gNB203 supports Integrated Access and Backhaul (IAB).

[0157] As an embodiment, the gNB203 is a macrocellular base station.

[0158] As an embodiment, the gNB203 is a micro cell base station.

[0159] As an embodiment, the gNB203 is a picoCell base station.

[0160] As an embodiment, the gNB203 is a home base station (Femtocell).

[0161] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0162] As an embodiment, the gNB203 is a flying platform device.

[0163] As an embodiment, the gNB203 is a satellite device.

[0164] As an embodiment, the gNB204 supports the Uu interface.

[0165] As an embodiment, the gNB204 supports Integrated Access and Backhaul (IAB).

[0166] As an embodiment, the gNB204 is a macrocellular base station.

[0167] As an embodiment, the gNB204 is a micro cell base station.

[0168] As an embodiment, the gNB204 is a picoCell base station.

[0169] As an embodiment, the gNB204 is a home base station (Femtocell).

[0170] As an embodiment, the gNB204 is a base station device that supports large delay difference.

[0171] As an embodiment, the gNB204 is a flying platform device.

[0172] As an embodiment, the gNB204 is a satellite device.

[0173] Example 3

[0174] Embodiment 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 for a first node (a UE or RSU in V2X, a vehicle-mounted device or a vehicle-mounted communication module) and a second node (gNB, a UE or RSU in V2X, a vehicle-mounted device or a vehicle-mounted communication module), or between two UEs is shown in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to as PHY301 in this article. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first node and the second node and the two UEs through PHY301. The L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides data encryption and integrity protection. The PDCP sublayer 304 also provides support for inter-zone mobility of the first node to the second node. The RLC sublayer 303 provides segmentation and reassembly of data packets, and retransmission of lost data packets through ARQ. The RLC sublayer 303 also provides duplicate data packet detection and protocol error detection. The MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first nodes. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and using RRC signaling between the second node and the first node to configure the lower layer. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first node and the second node in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce wireless transmission overhead. The L2 layer 355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS flows and data radio bearers (DRBs) to support the diversity of services.Although not shown, the first node may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, a server, etc.).

[0175] As an example, Figure 3 The entities of multiple sublayers of the control plane in the vertical direction form an SRB (Signaling Radio Bear).

[0176] As an example, Figure 3 The entities of multiple sublayers of the control plane in the vertical direction form a DRB (Data Radio Bear).

[0177] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0178] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0179] As an example, Figure 3 The wireless protocol architecture in is applicable to the third node in this application.

[0180] As an embodiment, the L2 layer 305 or 355 belongs to a high layer.

[0181] As an embodiment, the RRC sublayer 306 in the L3 layer belongs to a higher layer.

[0182] As an embodiment, the PDCP sublayer 354 belongs to a higher layer.

[0183] As an embodiment, the SDAP sublayer 356 belongs to a higher layer.

[0184] As an embodiment, the L3 layer belongs to a higher layer.

[0185] As an embodiment, the behavior of generating the first information in the present application is executed in the MAC sublayer 302 or 352 .

[0186] As an embodiment, the first SR in the present application is generated by the PHY301 or 351.

[0187] As an embodiment, the first SR in the present application is generated in the MAC sublayer 302 or 352.

[0188] As an embodiment, the second SR in the present application is generated by the PHY301 or 351.

[0189] As an embodiment, the second SR in the present application is generated in the MAC sublayer 302 or 352.

[0190] As an embodiment, the first signaling in the present application is generated in the RRC306.

[0191] As an embodiment, the second signaling in the present application is generated in the RRC306.

[0192] As an embodiment, the second signaling in the present application is generated in the PHY301 or 351.

[0193] As an embodiment, the second signaling in the present application is generated in the MAC sublayer 302 or 352.

[0194] As an embodiment, the third signaling in the present application is generated in the RRC306.

[0195] As an embodiment, the third signaling in the present application is generated in the PHY301 or 351.

[0196] As an embodiment, the third signaling in the present application is generated in the MAC sublayer 302 or 352.

[0197] As an embodiment, the fourth signaling in the present application is generated in the RRC306.

[0198] As an embodiment, the fifth signaling in the present application is generated in the RRC306.

[0199] Example 4

[0200] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in the attached figure. Figure 4 shown. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0201] The first communication device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 and an antenna 420 .

[0202] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454 and an antenna 452.

[0203] In transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In transmission from the first communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmission of lost packets and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes with a reference signal (e.g., a pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0204] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, wherein the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any spatial stream destined for the second communication device 450. The symbols on each spatial stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program codes and data. The memory 460 may be referred to as a computer-readable medium. In the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0205] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission function at the first communication device 410 described in the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, and implements L2 layer functions for user plane and control plane. The controller / processor 459 is also responsible for the retransmission of lost packets and signaling to the first communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0206] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the reception function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. In the transmission from the second communication device 450 to the first communication device 410, the controller / processor 475 provides multiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the UE 450. Upper layer packets from controller / processor 475 may be provided to the core network.

[0207] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The first communication device 410 device at least: generates first information, the first information indicates the cache status of the first service cell group; when the first service cell group is in an active state, sends the first information through the first service cell group; when the first service cell group is in an inactive state, sends the first information through the second service cell group; wherein the first service cell group and the second service cell group are SCG and MCG respectively.

[0208] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: generating first information, wherein the first information indicates a cache status of a first service cell group; when the first service cell group is in an active state, sending the first information through the first service cell group; when the first service cell group is in an inactive state, sending the first information through the second service cell group; wherein the first service cell group and the second service cell group are SCG and MCG, respectively.

[0209] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 450 device at least: receives first information through a second service cell group; wherein the first information indicates a cache status of a group of a first service cell; the first service cell group is in an inactive state; when the first service cell group is in an active state, the first information is sent through the first service cell group; the first service cell group and the second service cell group are SCG and MCG, respectively.

[0210] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: receiving first information through a second service cell group; wherein the first information indicates a cache status of a group of first service cells; the first service cell group is in an inactive state; when the first service cell group is in an active state, the first information is sent through the first service cell group; the first service cell group and the second service cell group are SCG and MCG, respectively.

[0211] As an embodiment, the first communication device 410 corresponds to the first node in this application.

[0212] As an embodiment, the second communication device 450 corresponds to the second node in this application.

[0213] As an embodiment, the first node in the present application includes the first communication device 410 , and the second node in the present application includes the second communication device 450 .

[0214] As an embodiment, the first communication device 410 is a UE.

[0215] As an embodiment, the second communication device 450 is a UE.

[0216] As an embodiment, the first communication device 410 is a gNB.

[0217] As an embodiment, the second communication device 450 is a gNB.

[0218] Example 5

[0219] Embodiment 5 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 5 As shown in the attached Figure 5 The order of the steps in the boxes does not represent a specific time sequence between the steps. Figure 5 In the embodiment, the steps in the dashed box F1 and the dashed box F2 are optional.

[0220] for The first node U1 , generating first information in step S5101, the first information indicating the cache status of the first service cell group; when the first service cell group is in an active state, sending the first information through the first service cell group in step S5102; when the first service cell group is in an inactive state, sending the first information through the second service cell group in step S5103; monitoring first signaling on the second service cell group in step S5104; when the first signaling is detected, starting to monitor the control signaling of the first service cell group in step S5105; when the first signaling is not detected in the first time window, sending a second SR on the first service cell group in step S5106; receiving second signaling on the first service cell group in step S5107, the second signaling indicating configuration information of a second channel; sending the first information on the second channel in step S5108;

[0221] for The second node U2, receiving first information in step S5201; sending first signaling in step S5202;

[0222] for The third node U3 , receiving a second SR in step S5301; sending a second signaling in step S5302; receiving first information through a second channel in step S5303;

[0223] Among them, the first service cell group and the second service cell group are SCG and MCG respectively; the first information is used to trigger the first signaling; the starting position of the first time window depends on the time domain resources occupied by the first information; the first information is used to trigger the second SR.

[0224] As an embodiment, before the first signaling is detected, the first serving cell is in an inactive state.

[0225] As an embodiment, after the first signaling is detected, the first service cell group is in an active state.

[0226] As an embodiment, after the first signaling is processed, the first service cell group is in an active state.

[0227] As an embodiment, the first signaling is used to restore the activity state of the first service cell group.

[0228] As an embodiment, the first signaling is used to activate the first service cell group.

[0229] As an embodiment, the first signaling indicates restoring the activity state of the first service cell group.

[0230] As an embodiment, when the first signaling is detected, the first service cell group is in an inactive state.

[0231] As an embodiment, the first signaling being detected includes: determining the existence of the first signaling by monitoring the first signaling.

[0232] As an embodiment, when the first signaling is detected, a fourth signaling is sent, and the fourth signaling indicates that the process of activating the first service cell group is completed.

[0233] As an embodiment, after the first signaling is processed, a fourth signaling is sent, and the fourth signaling indicates that the process of activating the first service cell group is completed.

[0234] As an embodiment, after the first signaling is processed, a fourth signaling is sent, and the fourth signaling indicates that the first service cell group is activated.

[0235] As an embodiment, after the first signaling is processed, a fourth signaling is sent, and the fourth signaling indicates that the first service cell group is in an active state.

[0236] As an embodiment, after the first signaling is processed, the first service cell group is in an inactive state.

[0237] As an embodiment, the first signaling indicates that the first service cell group remains in an inactive state.

[0238] As an embodiment, the length of the first time window is preconfigured.

[0239] As an embodiment, the length of the first time window is indicated by a fifth signaling, and the fifth signaling indicates that the first service cell group is deactivated.

[0240] As a sub-embodiment of the above embodiment, the fifth signaling includes a MAC CE.

[0241] As a sub-embodiment of the above embodiment, the fifth signaling includes an RRC signaling.

[0242] As an embodiment, the length of the first time window is configured through SIB (System Information Block).

[0243] As an embodiment, the length of the first time window is configured through RRC signaling.

[0244] As an embodiment, the length of the first time window is configured through higher layer signaling.

[0245] As an embodiment, the starting position of the phrase "the first time window" depends on the time domain resources occupied by the first information, including: the starting position of the first time window is the next time slot of the time domain resources occupied by the first information.

[0246] As an embodiment, the starting position of the first time window of the phrase depends on the time domain resources occupied by the first information, including: the starting position of the first time window is determined by the time domain resources occupied by the first information and the first time domain resource offset.

[0247] As a sub-embodiment of the above embodiment, the first time domain resource offset is pre-configured.

[0248] As a sub-embodiment of the above embodiment, the first time domain resource offset is indicated by fifth signaling, and the fifth signaling indicates that the first service cell group is deactivated.

[0249] As a sub-embodiment of the above embodiment, the first time domain resource offset is configured through SIB.

[0250] As an embodiment, the second SR includes a UCI.

[0251] As an embodiment, the second SR includes a preamble.

[0252] As an embodiment, the preamble included in the second SR is preconfigured.

[0253] As an embodiment, the preamble included in the second SR is indicated by fifth signaling, and the fifth signaling indicates that the first service cell group is deactivated.

[0254] As an embodiment, the preamble included in the second SR is configured through SIB.

[0255] As an embodiment, the preamble included in the second SR is configured through RRC signaling.

[0256] As an embodiment, the preamble included in the second SR is configured through higher layer signaling.

[0257] As an embodiment, the air interface resources occupied by the second SR are pre-configured.

[0258] As an embodiment, the air interface resources for sending the second SR are indicated by fifth signaling, and the fifth signaling indicates that the first service cell group is deactivated.

[0259] As an embodiment, the air interface resources occupied by the second SR are configured through SIB.

[0260] As an embodiment, the air interface resources occupied by the second SR are configured through RRC signaling.

[0261] As an embodiment, the air interface resources occupied by the second SR are configured through higher layer signaling.

[0262] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second SR include time domain resources occupied by the second SR.

[0263] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second SR include frequency domain resources occupied by the second SR.

[0264] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second SR include a multiple access signature occupied by the second SR.

[0265] As an embodiment, in the first time window, the second SR is not allowed to be sent on the first serving cell group.

[0266] As an embodiment, the second SR is sent on PRACH (Physical Random Access Channel).

[0267] As an embodiment, the second SR is sent on PUCCH (Physical Uplink Control Channel).

[0268] As an embodiment, the second SR is sent on a physical uplink channel.

[0269] As an embodiment, continuing to send the second SR has the advantage that the communication between the first node and the second service cell group may be interrupted, and sending the second SR through the first service cell group can send the first information in a timely manner. On the one hand, it can enhance the reliability of the first information sending, and on the other hand, it can activate the first cell group in time, thereby reducing data transmission delay.

[0270] As an embodiment, the second SR is used to trigger the second signaling.

[0271] As an embodiment, the configuration information of the second channel includes air interface resources occupied by the second channel.

[0272] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second channel include time domain resources occupied by the second channel.

[0273] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second channel include frequency domain resources occupied by the second channel.

[0274] As a sub-embodiment of the above embodiment, the air interface resources occupied by the second channel include the multiple access signature occupied by the second channel.

[0275] As an embodiment, the configuration information of the second channel includes a modulation and coding method used by the second channel.

[0276] As an embodiment, the configuration information of the second channel includes the configuration of the DMRS used by the second channel.

[0277] As an embodiment, the second channel includes PUSCH (Physical Uplink Shared Channel).

[0278] As an embodiment, the second channel includes PUCCH (Physical Uplink Control Channel).

[0279] As an embodiment, when the second SR is sent on the first service cell group, the first service cell group is in an inactive state.

[0280] As an embodiment, the time-frequency resources occupied by the second channel correspond to the first service cell group.

[0281] As an embodiment, the time-frequency resources occupied by the second channel correspond to a service cell in the first service cell group.

[0282] As an embodiment, the first information sent on the second channel is scrambled by the user identity assigned by the first service cell group.

[0283] As an embodiment, the user identity allocated by the first service cell group is C-RNTI (cell RNTI).

[0284] As an embodiment, the number of bits contained in the user identity allocated by the first service cell group is a positive integer multiple of 8.

[0285] As an embodiment, the first information includes a first logical channel group identity and a first cache size, wherein the first cache size indicates the amount of available data of the logical channel group identified by the first logical channel group identity; the first logical channel group identity is assigned to the first service cell group.

[0286] As an embodiment, the first logical channel group identity is only allocated to the first service cell group and is not allocated to the second service cell group.

[0287] As an embodiment, the first information includes a first logical channel group identity and a first cache size, the first cache size indicating the amount of available data in the logical channel group identified by the first logical channel group identity; the first information is transmitted on the first MAC CE, and the MAC subheader corresponding to the first MAC CE indicates that the first logical channel group identity corresponds to the first service cell group.

[0288] As a sub-embodiment of the above embodiment, the MAC subheader corresponding to the first MAC CE includes a first LCID, and the first LCID indicates that the first logical channel group identity corresponds to the first service cell group.

[0289] As an embodiment, the first information includes a first logical channel group identity and a first cache size, the first cache size indicating the amount of available data in the logical channel group identified by the first logical channel group identity; the first information is transmitted on a first MAC CE, the first MAC CE includes a first identifier, and the first identifier indicates that the first logical channel group identity corresponds to the first service cell group.

[0290] As an embodiment, the first information includes a first logical channel group identity and a first cache size, wherein the first cache size indicates the amount of available data in the logical channel group identified by the first logical channel group identity; the first information is transmitted on a first MAC CE, and the first MAC CE is used to carry information for the first service cell group.

[0291] As an embodiment, the first node and the second node are connected via a Uu interface.

[0292] As an embodiment, the first node and the third node are connected via a Uu interface.

[0293] As an embodiment, the second node and the third node are connected via an Xn interface.

[0294] As an embodiment, the second node and the third node are connected via an X2 interface.

[0295] As an embodiment, the second node and the third node are connected via a wired interface.

[0296] Example 6

[0297] Embodiment 6 illustrates a wireless signal transmission flow chart according to an embodiment of the present application, as shown in the attached Figure 6 As shown in the attached Figure 6 The order of the steps in the boxes does not represent a specific time sequence between the steps. Figure 6 In the embodiment, the steps in the dashed box F1 and the dashed box F2 are optional.

[0298] for The first node U1, generating first information in step S6101, wherein the first information indicates a cache status of a first service cell group; when the first service cell group is in an active state, sending the first information through the first service cell group in step S6102; when the first service cell group is in an active state, sending a first SR in the second service cell group in step S6103; receiving a third signaling on the second service cell group in step S6104, wherein the third signaling indicates configuration information of a first channel; sending the first information on the first channel in step S6105; monitoring the first signaling on the second service cell group in step S6106; when the first signaling is detected, starting to monitor the control signaling of the first service cell group in step S6107; when the first signaling is not detected in the first time window, sending a second SR on the first service cell group in step S6108; receiving a second signaling on the first service cell group in step S6109, wherein the second signaling indicates configuration information of a second channel; sending the first information on the second channel in step S6110;

[0299] for The second node U2 , receiving the first SR in step S6201; sending the third signaling in step S6202; receiving the first information in step S6203; sending the first signaling in step S6204;

[0300] for The third node U3 , receiving a second SR in step S6301; sending a second signaling in step S6302; receiving first information through a second channel in step S6303;

[0301] Among them, the first service cell group and the second service cell group are SCG and MCG respectively; the first information is used to trigger the first signaling; the starting position of the first time window depends on the time domain resources occupied by the first information; the first information is used to trigger the second SR; the first information is used to trigger the first SR, and the first information is transmitted on the first channel; the air interface resources occupied by the first SR are used to determine whether the cache status indicated by the first information is for the first service cell group or the second service cell group.

[0302] As an embodiment, the first SR includes a UCI (Uplink Control Information, uplink control information).

[0303] As an embodiment, the first SR includes a preamble.

[0304] As an embodiment, the preamble included in the first SR is allocated to the first service cell group.

[0305] As an embodiment, the first SR is sent on PRACH (Physical Random Access Channel).

[0306] As an embodiment, the first SR is sent on PUCCH (Physical Uplink Control Channel).

[0307] As an embodiment, the first SR is sent on a physical uplink channel.

[0308] As an embodiment, the first SR includes a UCI.

[0309] As an embodiment, the preamble included in the first SR is preconfigured.

[0310] As an embodiment, the preamble included in the first SR is indicated by a fifth signaling, and the fifth signaling indicates that the first service cell group is deactivated.

[0311] As an embodiment, the preamble included in the first SR is configured through SIB.

[0312] As an embodiment, the preamble included in the first SR is configured through RRC signaling.

[0313] As an embodiment, the preamble included in the first SR is configured through higher layer signaling.

[0314] As an embodiment, the air interface resources occupied by the first SR are pre-configured.

[0315] As an embodiment, the air interface resources for sending the first SR are indicated by fifth signaling, and the fifth signaling indicates that the first service cell group is deactivated.

[0316] As an embodiment, the air interface resources occupied by the first SR are configured through SIB.

[0317] As an embodiment, the air interface resources occupied by the first SR are configured through RRC signaling.

[0318] As an embodiment, the air interface resources occupied by the first SR are configured through higher layer signaling.

[0319] As a sub-embodiment of the above embodiment, the air interface resources occupied by the first SR include time domain resources occupied by the first SR.

[0320] As a sub-embodiment of the above embodiment, the air interface resources occupied by the first SR include frequency domain resources occupied by the first SR.

[0321] As a sub-embodiment of the above embodiment, the air interface resources occupied by the first SR include the multiple access signatures occupied by the first SR.

[0322] As an embodiment, the first SR is used to trigger the third signaling.

[0323] As an embodiment, the air interface resources occupied by the first SR are used to determine the air interface resources occupied by the third signaling.

[0324] As an embodiment, the air interface resources occupied by the first SR include time domain resources occupied by the first SR.

[0325] As an embodiment, the air interface resources occupied by the first SR include frequency domain resources occupied by the first SR.

[0326] As an embodiment, the air interface resources occupied by the first SR include the multiple access signature occupied by the first SR.

[0327] As an embodiment, the air interface resources occupied by the third signaling include time domain resources occupied by the third signaling.

[0328] As an embodiment, the air interface resources occupied by the third signaling include the search space occupied by the third signaling.

[0329] As an embodiment, the air interface resources occupied by the third signaling include a CORESET (control resource set) occupied by the third signaling.

[0330] As a sub-embodiment of the above embodiment, the phrase air interface resources occupied by the first SR are used to determine the air interface resources occupied by the third signaling includes: time domain resources occupied by the first SR are used to determine the time domain resources occupied by the third signaling.

[0331] As a sub-embodiment of the above embodiment, the phrase air interface resources occupied by the first SR are used to determine the air interface resources occupied by the third signaling includes: frequency domain resources occupied by the first SR are used to determine the frequency domain resources occupied by the third signaling.

[0332] As an embodiment, the air interface resources occupied by the first SR are used to determine the signaling format of the third signaling, and the signaling format of the third signaling implicitly indicates that the first channel is allocated to the first information.

[0333] As an embodiment, the air interface resources occupied by the first SR are used to determine the time-frequency resources occupied by the first channel, and the signaling format of the third signaling implicitly indicates that the first channel is allocated to the first information.

[0334] As an embodiment, the third signaling includes a DCI (Downlink Control Information, downlink control information).

[0335] As an embodiment, the signaling format of the third signaling refers to the signaling format of the DCI included in the third signaling.

[0336] As an embodiment, the third signaling includes second indication information, and the second indication information indicates that the first channel is allocated to the first information.

[0337] As an embodiment, the third signaling is received before sending the first SR.

[0338] As an embodiment, the third signaling indicates deactivation of the first service cell group.

[0339] As an embodiment, the third signaling includes part or all of an RRC signaling.

[0340] As an embodiment, the third signaling includes a higher layer signaling.

[0341] As an embodiment, the air interface resources occupied by the first SR are used to determine the time domain resources occupied by the first channel.

[0342] As an embodiment, the air interface resources occupied by the first SR are used to determine the time-frequency domain resources occupied by the first channel.

[0343] As an embodiment, the air interface resources occupied by the first SR are used to determine the time-frequency resources occupied by the first channel.

[0344] As an embodiment, the configuration information of the first channel includes the time domain resources occupied by the first channel, the frequency domain resources occupied by the first channel, the modulation and coding mode occupied by the first channel, the DMRS configuration occupied by the first channel and at least one of the multiple access signatures occupied by the first channel.

[0345] As an embodiment, the first channel is transmitted on the second service cell group.

[0346] As an embodiment, the first channel is transmitted on any service cell in the second service cell group.

[0347] As an embodiment, the time-frequency resources occupied by the first channel correspond to the second service cell group.

[0348] As an embodiment, the time-frequency resources occupied by the first channel correspond to a service cell in the second service cell group.

[0349] As an embodiment, the first information sent on the first channel is scrambled by the user identity assigned by the second service cell group.

[0350] As an embodiment, the user identity allocated by the second service cell group is C-RNTI (cell RNTI).

[0351] As an embodiment, the number of bits contained in the user identity allocated by the second service cell group is a positive integer multiple of 8.

[0352] Example 7

[0353] Embodiment 7 illustrates a structural block diagram of a processing device used in a first node, as shown in the attached figure. Figure 7 In Embodiment 7, the first node processing device 700 includes a first transmitter 701 and a first receiver 702 .

[0354] The first receiver 702 generates first information, where the first information indicates a cache status of a first serving cell group;

[0355] The first transmitter 701 sends the first information through the first serving cell group when the first serving cell group is in an active state; and sends the first information through the second serving cell group when the first serving cell group is in an inactive state;

[0356] In Embodiment 7, the first service cell group and the second service cell group are SCG and MCG respectively.

[0357] As an embodiment, the first receiver 702 monitors first signaling on the second serving cell group; when the first signaling is detected, starts monitoring control signaling of the first serving cell group;

[0358] The first service cell group is in an inactive state; and the first information is used to trigger the first signaling.

[0359] As an embodiment, the first information is generated when there is data to be sent in the first MAC entity.

[0360] As an embodiment, the first MAC entity corresponds to the RB between the first node and the first service cell group to which it belongs.

[0361] As an embodiment, the first MAC entity corresponds to the first service cell group.

[0362] As an embodiment, the first information is sent via RRC signaling.

[0363] As an embodiment, the first information is sent via a MAC CE (Control Element).

[0364] As an embodiment, the phrase that the first service cell group is in an active state includes: monitoring control signaling of the first service cell group.

[0365] As an embodiment, the phrase that the first service cell group is in an inactive state includes: stopping monitoring control signaling of the first service cell group.

[0366] As an embodiment, the first transmitter 701 includes the attached Figure 4 The antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475 and the memory 476.

[0367] As an embodiment, the first transmitter 701 includes the attached Figure 4 At least one of the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475 and the memory 476.

[0368] As an embodiment, the first receiver 702 includes the attached Figure 4 The antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475 and the memory 476.

[0369] As an embodiment, the first receiver 702 includes the attached Figure 4 At least one of the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475 and the memory 476.

[0370] Example 8

[0371] Embodiment 8 illustrates a structural block diagram of a processing device used in a second node, as shown in the attached figure. Figure 8 As shown in the attached Figure 8 In the embodiment, the second node processing device 800 includes a second receiver 801 and a second transmitter 802.

[0372] The second receiver 801 receives first information through a second serving cell group;

[0373] In Example 8, the first information indicates the cache status of the first service cell group; the first service cell group is in an inactive state; when the first service cell group is in an active state, the first information is sent through the first service cell group; the first service cell group and the second service cell group are SCG and MCG respectively.

[0374] As an embodiment, the second transmitter 802 sends the first signaling through the second serving cell group;

[0375] The first signaling is monitored on the second service cell group; when the first signaling is detected, the control signaling of the first service cell group is monitored; the first service cell group is in an inactive state; and the first information is used to trigger the first signaling.

[0376] As an embodiment, the first information is generated when there is data to be sent in the first MAC entity.

[0377] As an embodiment, the first MAC entity corresponds to the RB between the first node and the first service cell group to which it belongs.

[0378] As an embodiment, the first MAC entity corresponds to the first service cell group.

[0379] As an embodiment, the first information is sent via RRC signaling.

[0380] As an embodiment, the first information is sent via a MAC CE (Control Element).

[0381] As an embodiment, the second transmitter 802 includes the attached Figure 4 At least one of the antenna 452, transmitter / receiver 454, multi-antenna transmitter processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0382] As an embodiment, the second transmitter 802 includes the attached Figure 4Antenna 452, transmitter / receiver 454, multi-antenna transmitter processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467.

[0383] As an embodiment, the second receiver 801 includes the attached Figure 4 At least one of the antenna 452, receiver 454, multi-antenna reception processor 458, reception processor 456, controller / processor 459, memory 460 and data source 467.

[0384] As an embodiment, the second receiver 801 includes the attached Figure 4 Antenna 452, receiver 454, multi-antenna reception processor 458, reception processor 456, controller / processor 459, memory 460 and data source 467.

[0385] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of software and hardware combination. The first node in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The second node in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The third node in the present application includes but is not limited to mobile phones, tablet computers, notebooks, Internet cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The user equipment or UE or terminal in this application includes but is not limited to mobile phones, tablets, notebooks, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication equipment, aircraft, airplanes, drones, remote-controlled aircraft and other wireless communication devices. The base station equipment or base station or network-side equipment in this application includes but is not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, eNB, gNB, transmission and reception nodes TRP, GNSS, relay satellites, satellite base stations, aerial base stations and other wireless communication devices.

[0386] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A first node for wireless communication, wherein: include: A first receiver generates first information indicating a cache status of a first serving cell group; a first transmitter, when the first serving cell group is in an active state, sending the first information through the first serving cell group; When the first serving cell group is in an inactive state, sending the first information through a second serving cell group; The first receiver monitors a first signaling on the second serving cell group; when the first signaling is detected, starts monitoring a control signaling of the first serving cell group; wherein the first serving cell group is in an inactive state; and the first information is used to trigger the first signaling; The first transmitter sends a second SR on the first serving cell group when the first signaling is not detected in the first time window; The first receiver receives second signaling on the first serving cell group, where the second signaling indicates configuration information of a second channel; The first transmitter sends the first information on the second channel; The starting position of the first time window depends on the time domain resources occupied by the first information; the first information is used to trigger the second SR; the second SR is used to trigger the second signaling; the first service cell group and the second service cell group are SCG and MCG respectively.

2. The first node according to claim 1, characterized in that: The starting position of the first time window depends on the time domain resources occupied by the first information, including: the starting position of the first time window is determined by the time domain resources occupied by the first information and the first time domain resource offset.

3. The first node according to claim 1 or 2, characterized in that: The length of the first time window is indicated by a fifth signaling, and the fifth signaling indicates that the first service cell group is deactivated; the fifth signaling includes a MAC CE, or the fifth signaling includes an RRC signaling.

4. The first node according to any one of claims 1 to 3, characterized in that: include: The first transmitter sends a first SR on the second serving cell group; The first receiver receives a third signaling on the second serving cell group, where the third signaling indicates configuration information of the first channel; Among them, the first service cell group is in an inactive state; the first information is used to trigger the first SR; the first information is transmitted on the first channel; and the air interface resources occupied by the first SR are used to determine whether the cache status indicated by the first information is for the first service cell group or the second service cell group.

5. The first node according to any one of claims 1 to 4, characterized in that: The first information includes a first logical channel group identity and a first cache size, wherein the first cache size indicates the amount of available data of the logical channel group identified by the first logical channel group identity; the first logical channel group identity is allocated to the first serving cell group.

6. A method in a first node for wireless communication, characterized in that: include: generating first information, wherein the first information indicates a cache status of a first serving cell group; When the first serving cell group is in an active state, sending the first information through the first serving cell group; when the first serving cell group is in an inactive state, sending the first information through a second serving cell group; monitoring a first signaling on the second serving cell group; when the first signaling is detected, starting to monitor a control signaling of the first serving cell group; wherein the first serving cell group is in an inactive state; and the first information is used to trigger the first signaling; When the first signaling is not detected in the first time window, sending a second SR on the first serving cell group; receiving a second signaling on the first serving cell group, where the second signaling indicates configuration information of a second channel; sending the first information on the second channel; The starting position of the first time window depends on the time domain resources occupied by the first information; the first information is used to trigger the second SR; the second SR is used to trigger the second signaling; the first service cell group and the second service cell group are SCG and MCG respectively.

7. The method in the first node according to claim 6, characterized in that: The starting position of the first time window depends on the time domain resources occupied by the first information, including: the starting position of the first time window is determined by the time domain resources occupied by the first information and the first time domain resource offset.

8. The method in the first node according to claim 6 or 7, characterized in that: The length of the first time window is indicated by a fifth signaling, and the fifth signaling indicates that the first service cell group is deactivated; the fifth signaling includes a MAC CE, or the fifth signaling includes an RRC signaling.

9. The method in the first node according to any one of claims 6 to 8, characterized in that: Also includes: Sending a first SR on the second serving cell group; receiving a third signaling on the second serving cell group, where the third signaling indicates configuration information of the first channel; Among them, the first service cell group is in an inactive state; the first information is used to trigger the first SR; the first information is transmitted on the first channel; and the air interface resources occupied by the first SR are used to determine whether the cache status indicated by the first information is for the first service cell group or the second service cell group.

10. The method in the first node according to any one of claims 6 to 9, characterized in that: The first information includes a first logical channel group identity and a first cache size, wherein the first cache size indicates the amount of available data of the logical channel group identified by the first logical channel group identity; the first logical channel group identity is allocated to the first serving cell group.

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