System information request method and apparatus, and related system

Abstract

The present application provides a system information request method and apparatus, and a related system. The method comprises: receiving a first-type indication, the first-type indication being configured for instructing a terminal device to request, in a first cell, system information of a second cell, and the first cell being a neighboring cell of the second cell; and sending a system information request to the first cell so as to request a network device to send the requested system information of the second cell. The technical solution provided in the present application allows for system information of a neighboring cell to be sent by means of a secondary cell, thereby reducing signaling overhead.

Description

Method, apparatus and related system for system information request

[0001] The present application claims priority from the Chinese patent application No. 202411359583.7 filed on September 26, 2024, and entitled "Method, apparatus and related system for system information request", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of wireless communication, and in particular to a method, apparatus and related system for system information request. BACKGROUND

[0003] The first system information block (SIB1) is an important system information block in the 5th generation mobile networks (5G) system, which contains important information such as cell selection, cell configuration, and scheduling and change of other system information.

[0004] The current SIB1 is periodically transmitted in the cell, for example, the transmission period is between 20ms and 160ms, and the transmission occasion of SIB1 can be determined by the configuration parameters in the master control information (MIB) and the downlink scheduling of the network side. Based on the energy saving requirement of the 5G network, the network side is allowed to transmit SIB1 non-periodically in the network energy saving (NES) topic, and when the terminal device needs to obtain SIB1, the first system information request is transmitted, for example: the terminal device transmits the uplink-wake up signaling (UL-WUS) to the network side, and the network side issues SIB1 after receiving the UL-WUS request of the terminal device, which is called on demand SIB1 (OD-SIB1). OD-SIB1 reduces the transmission of SIB1 by the network side to achieve the purpose of network power saving. The cell that transmits SIB1 (OD-SIB1) based on the request of the terminal device can be called a network energy saving (NES) cell.

[0005] In another scenario of the OD-SIB1, the SIB of the NES cell can also be sent by the CellA, which is an auxiliary cell of the NES cell, generally and the NES cell are each other's neighbor cell, and the CellA can send the SIB1 of the NES cell requested by the terminal device to the terminal device. Generally, the CellA can assist the NES cell to perform the above operation, but how the CellA sends the SIB1 of the NES cell is a technical problem to be solved. SUMMARY

[0006] Embodiments of the present application provide a method, apparatus and related system for system information request, which can realize that an auxiliary cell sends system information of a neighbor cell and reduces signaling overhead.

[0007] In a first aspect, the present application provides a method for system information request, which can be applied to a terminal device, an apparatus (for example, a chip or a chip system or a circuit) in the terminal device, or an apparatus that can be matched with the terminal device. Hereinafter, the method applied to the terminal device is described as an example. The method can include: receiving, by the terminal device, a first type indication, the first type indication being used to indicate that the terminal device requests system information of a second cell in a first cell, the first cell being a neighbor cell of the second cell; and sending, by the terminal device, a system information request to the first cell to request a network device to send the system information of the requested second cell.

[0008] In the embodiments, for the application scenario of requesting the system information of the second cell from the first cell, the first type indication is used to indicate that the terminal device requests the system information of the second cell from the first cell, and the terminal device can send the system information request to the first cell to request the system information of the requested second cell. After receiving the system information request, the network device can send the system information of the requested second cell. Therefore, the auxiliary cell (for example, the first cell) can send the system information of the neighbor cell (for example, the second cell), so as to reduce the signaling overhead.

[0009] In a possible implementation, the first type indication is included in first information, and the first information is used to configure the system information request.

[0010] In a possible implementation, the first information further includes at least one of scheduling information of system information of the second cell or random access parameters corresponding to the system information of the second cell, and the random access parameters include at least random access preamble information or a random access preamble starting value; and the scheduling information of the system information of the second cell includes at least one of a period of sending the system information of the second cell, a duration of sending the system information of the second cell, a location of sending the system information of the second cell, a synchronization signal and physical broadcast channel (PBCH) block (SSB) list of sending the system information of the second cell, a scheduling identifier of the system information of the second cell, or a request parameter of the system information of the second cell.

[0011] In a possible implementation, the first information includes numbering information used to indicate one or more identifiers or numbers of the system information of the second cell.

[0012] In a possible implementation, the first information or the system information request includes an identifier of the second cell; and the identifier of the second cell is one or more of a physical cell identifier (PCI), an absolute radio frequency channel number (ARFCN), a serial number of the second cell, numbering information of the second cell, or a scheduling identifier of the system information of the second cell; and the numbering information of the second cell includes a number of the system information of the second cell, for example, a system information number of the second cell in the first cell.

[0013] In a possible implementation, sending the system information request to the first cell includes sending the system information request to the first cell through a random access message 3. With this embodiment, for an application scenario of requesting the system information of the second cell from the first cell, a method of including an identifier of the second cell in the system information request is introduced, in which the system information of the second cell is sent when requested by the NES terminal device, and the first cell does not need to assign a specific system information number, nor configure fixed scheduling information in the system information, thereby reducing the impact of scheduling information / system information change on legacy terminal devices.

[0014] In a possible implementation, the method can further include receiving a response to the system information request, and the response to the system information request includes scheduling information of the system information of the second cell and / or a number of the system information of the second cell and / or a message name of sending the system information of the second cell.

[0015] In a possible implementation, the response to the system information request comprises: receiving the response to the system information request based on a temporary cell radio network temporary identifier (TC-RNTI) or a system information radio network temporary identifier (SI-RNTI) or a scheduling identifier of the system information of the second cell.

[0016] In a possible implementation, the response to the system information request further comprises the requested system information of the second cell, and the method can further comprise: acquiring the requested system information of the second cell according to the response to the system information request.

[0017] In a possible implementation, sending the system information request to the first cell comprises: selecting random access parameters corresponding to the system information of the requested second cell, and sending the system information request to the first cell through the random access parameters corresponding to the system information of the second cell. Through this embodiment, for the application scenario of requesting the system information of the second cell from the first cell, a method of indicating the second cell identifier in the system information request is introduced, in which the system information of the second cell is sent when requested by the NES terminal device, and there is no need for the first cell to allocate specific system information numbers, nor to configure fixed scheduling information in the system information, so that the impact of scheduling information / system information change on the legacy terminal device can be reduced. Moreover, the 2-step request process is adopted, so that the system information of the second cell can be obtained more quickly.

[0018] In a possible implementation, the correspondence between the random access parameters and the second cell is based on any one of the following mapping rules: one set of random access parameters corresponds to one second cell or the system information of the second cell; or one set of random access parameters corresponds to all second cells or the system information of the second cell; or one set of random access parameters corresponds to a group of second cells or the system information of the second cell, and the group of second cells comprises a plurality of second cells.

[0019] Selecting the random access parameters corresponding to the system information of the requested second cell comprises: selecting the random access preambles corresponding to the PCI and / or ARFCN of the second cell.

[0020] In a possible implementation, the correspondence between the random access parameter and the second cell is based on a set of random access parameters corresponding to one second cell or system information of the second cell, and the selecting the random access parameter corresponding to the system information of the second cell comprises: selecting the random access parameter corresponding to the system information of the second cell based on the identity of the second cell.

[0021] In a possible implementation, the correspondence between the random access parameter and the second cell is based on a set of random access parameters corresponding to one second cell or system information of the second cell, and the selecting the random access parameter corresponding to the system information of the second cell comprises: selecting the random access parameter corresponding to the system information of the second cell based on the order of the second cell list.

[0022] In a possible implementation, the method further can comprise: receiving a random access response, wherein the random access response comprises scheduling information of the system information of the second cell and / or numbering information of the system information of the second cell and / or a message name of the system information of the second cell.

[0023] In a possible implementation, the method further can comprise: obtaining the system information of the second cell according to the scheduling information of the system information of the second cell in the first information and / or the scheduling information of the system information of the second cell in the system information response / random access response.

[0024] In a second aspect, the present application provides a system information request method, which can be applied to a network device, an apparatus (for example, a chip or a chip system or a circuit) in the network device, or an apparatus capable of matching the network device, which is described below by taking the application to the network device as an example. The method can comprise: sending a first type indication, wherein the first type indication is used to indicate that a terminal device requests system information of a second cell in a first cell, and the first cell is a neighbor cell of the second cell; and receiving a system information request to request the network device to send the requested system information of the second cell.

[0025] In a possible implementation, the first type indication is included in first information, and the first information is used to configure the system information request.

[0026] In a possible implementation, the first information further includes at least one of scheduling information of system information of the second cell or random access parameters corresponding to the system information of the second cell, and the random access parameters at least include random access preamble information or a random access preamble starting value; and the scheduling information of the system information of the second cell includes at least one of a period of sending the system information of the second cell, a duration of sending the system information of the second cell, a location of sending the system information of the second cell, an SSB list of sending the system information of the second cell, a scheduling identifier of the system information of the second cell, or a request parameter of the system information of the second cell.

[0027] In a possible implementation, the first information includes numbering information used to indicate one or more identifiers or numbers of the system information of the second cell.

[0028] In a possible implementation, the first information or the system information request includes an identifier of the second cell; and the identifier of the second cell is one or more of the following: a PCI, an ARFCN, a serial number of the second cell, numbering information of the second cell, or a scheduling identifier of the system information of the second cell; and the numbering information of the second cell includes a number of the system information of the second cell, for example, a system information number of the second cell in the first cell.

[0029] In a possible implementation, receiving the system information request includes receiving the system information request through a random access message 3.

[0030] In a possible implementation, the method further includes sending a response to the system information request, and the response to the system information request includes scheduling information of the system information of the second cell and / or a number of the system information of the second cell and / or a message name in which the system information of the second cell is sent.

[0031] In a possible implementation, sending the response to the system information request includes sending the response to the system information request based on a TC-RNTI or an SI-RNTI or a scheduling identifier of the system information of the second cell.

[0032] In a possible implementation, the response to the system information request further includes the requested system information of the second cell.

[0033] In a possible implementation, the method further includes sending a random access response, and the random access response includes scheduling information of the system information of the second cell and / or numbering information of the system information of the second cell and / or a message name in which the system information of the second cell is sent.

[0034] In a third aspect, the present application provides a method for requesting system information, which can be applied to a terminal device, a device (for example, a chip or a chip system or a circuit) in the terminal device, or a device that can be used with the terminal device. The method can include: receiving, by the terminal device, broadcast state information of system information of a second cell, the broadcast state information being used to indicate a broadcast state of the system information of the second cell, and the broadcast state information including the system information of the second cell being in a broadcast state or a non-broadcast state; and sending, by the terminal device, a system information request to request a network device to send the requested system information of the second cell according to the broadcast state information.

[0035] In the embodiments of the present application, the network device can send the broadcast state information of the system information of the second cell to the terminal device, so that the terminal device can determine whether to send the system information request according to the broadcast state information, thereby reducing unnecessary processes of the terminal device requesting the system information.

[0036] In a possible implementation, the method can further include: sending, by the terminal device, a broadcast state request to request the broadcast state information of the system information of the second cell. Through this embodiment, the terminal device can actively request the network device for the broadcast state information of the system information of the second cell, so that the terminal device can determine whether to send the system information request according to the broadcast state information, thereby reducing unnecessary processes of the terminal device requesting the system information.

[0037] In a possible implementation, the broadcast state information is a cell barred indication in a master information block (MIB) of the second cell. Specifically, when the cell barred indication is not barred, the system information of the second cell is in the broadcast state; or when the cell barred indication is barred, the system information of the second cell is in the non-broadcast state.

[0038] In a possible implementation, the broadcast state information is an SSB subcarrier offset (ssb-SubcarrierOffset) in the MIB of the second cell. Specifically, when the SSB subcarrier offset is in the broadcast state, the system information of the second cell is in the broadcast state; or when the SSB subcarrier offset is in the non-broadcast state, the system information of the second cell is in the non-broadcast state.

[0039] In a possible implementation, the sending the system information request to request the network device to send the system information of the requested second cell comprises: when the broadcast state information is the non-broadcast state, sending the system information request to request the network device to send the system information of the requested second cell.

[0040] In a possible implementation, the broadcast state information further comprises scheduling information of the system information of the second cell.

[0041] In a possible implementation, the sending the broadcast state request comprises: sending the broadcast state request in the first cell or the second cell, and the first cell is a neighboring cell of the second cell.

[0042] In a possible implementation, the method further can comprise: receiving parameters of the broadcast state request, the parameters comprising at least one of the following: an access occasion of the broadcast state request, an SSB list, and a random access preamble.

[0043] In a possible implementation, the parameters of the broadcast state request are contained in system information of the first cell or the second cell.

[0044] In a possible implementation, the receiving the broadcast state information of the system information of the second cell comprises: receiving the broadcast state information of the system information of the second cell based on a TC-RNTI or an SI-RNTI or the broadcast state identifier.

[0045] In a fourth aspect, the present application provides a method for system information request, which can be applied to a network device, an apparatus (for example, a chip, or a chip system, or a circuit) in the network device, or an apparatus capable of matching the network device. Hereinafter, the method applied to the network device is taken as an example for description. The method can comprise: sending broadcast state information of system information of a second cell, the broadcast state information being used for indicating a broadcast state of the system information of the second cell, the broadcast state information comprising that the system information of the second cell is in a broadcast state or a non-broadcast state, and the broadcast state information being used for a terminal device to send a system information request to request the network device to send system information of a requested second cell.

[0046] In a possible implementation, the method further can comprise: receiving a broadcast state request, the broadcast state request being used for requesting the broadcast state information of the system information of the second cell.

[0047] In a possible implementation, the broadcast state information is a cell barred indication in the MIB of the second cell. Specifically, when the cell barred indication is not barred, the system information of the second cell is in the broadcast state; or when the cell barred indication is barred, the system information of the second cell is in the non-broadcast state.

[0048] In a possible implementation, the broadcast state information is an SSB subcarrier offset (ssb-SubcarrierOffset) in the MIB of the second cell. Specifically, when the SSB subcarrier offset indicates the broadcast state, the system information of the second cell is in the broadcast state; or when the SSB subcarrier offset indicates the non-broadcast state, the system information of the second cell is in the non-broadcast state.

[0049] In a possible implementation, the broadcast state information further includes scheduling information of the system information of the second cell.

[0050] In a possible implementation, receiving the broadcast state request includes: receiving the broadcast state request through the first cell or the second cell, the first cell being a neighboring cell of the second cell.

[0051] In a possible implementation, the method further includes: sending a parameter of the broadcast state request, the parameter including at least one of an access occasion of the broadcast state request, an SSB list, and a random access preamble.

[0052] In a possible implementation, the parameter of the broadcast state request is included in system information of the first cell or the second cell.

[0053] In a possible implementation, sending the broadcast state information of the system information of the second cell includes: sending the broadcast state information of the system information of the second cell based on a TC-RNTI or an SI-RNTI or the broadcast state identifier.

[0054] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which can be a terminal device or a device (for example, a chip, a chip system, or a circuit) in a terminal device.

[0055] The beneficial effects can be referred to the description of the first aspect, which will not be repeated here. The apparatus has the functions of implementing the behaviors in the method examples of the first aspect. The functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions.

[0056] In a possible implementation, the communication apparatus includes:

[0057] The transceiver is configured to receive a first type of indication, the first type of indication being used to indicate that the terminal device requests system information of a second cell in a first cell, the first cell being a neighbor cell of the second cell.

[0058] The transceiver is further configured to send a system information request to the first cell to request the network device to send the system information of the requested second cell.

[0059] In a possible implementation, the first type of indication is included in first information, and the first information is used to configure the system information request.

[0060] In a possible implementation, the first information further includes at least one of scheduling information of the system information of the second cell or random access parameters corresponding to the system information of the second cell, the random access parameters including at least random access preamble information or a random access preamble starting value; and the scheduling information of the system information of the second cell includes at least one of a period of system information transmission of the second cell, a duration of system information transmission of the second cell, a location of system information transmission of the second cell, an SSB list of system information transmission of the second cell, a scheduling identifier of the system information of the second cell, or a request parameter of the system information of the second cell.

[0061] In a possible implementation, the first information includes numbering information, and the numbering information is used to indicate one or more identifiers or numbers of the system information of the second cell.

[0062] In a possible implementation, the first information or the system information request includes an identifier of the second cell; and the identifier of the second cell is one or more of the following: a PCI, an ARFCN, a serial number of the second cell, numbering information of the second cell, a scheduling identifier of the system information of the second cell; and the numbering information of the second cell includes a number of the system information of the second cell, for example, a system information number of the second cell corresponding to the first cell.

[0063] In a possible implementation, the sending of the system information request to the first cell includes sending the system information request to the first cell through a random access message 3.

[0064] In a possible implementation, the transceiver is further configured to receive a response to the system information request, the response to the system information request including scheduling information of the system information of the second cell and / or a number of the system information of the second cell and / or a message name in which the system information of the second cell is sent.

[0065] In a possible implementation, the receiving of the response to the system information request includes receiving the response to the system information request based on a TC-RNTI or an SI-RNTI or a scheduling identifier of the system information of the second cell.

[0066] In a possible implementation, the response to the system information request further includes the requested system information of the second cell, and the communication apparatus further includes:

[0067] a processing unit, configured to acquire the requested system information of the second cell according to the response to the system information request.

[0068] In a possible implementation, the transceiving unit sends the system information request to the first cell, and specifically is configured to:

[0069] select the random access parameter corresponding to the system information of the requested second cell, and send the system information request to the first cell through the random access parameter corresponding to the system information of the second cell.

[0070] In a possible implementation, the correspondence between the random access parameter and the second cell is based on any one of the following mapping rules:

[0071] one set of random access parameters corresponds to one second cell or the system information of the second cell; or

[0072] one set of random access parameters corresponds to all second cells or the system information of the second cell; or

[0073] one set of random access parameters corresponds to a group of second cells or the system information of the second cell, and the group of second cells includes a plurality of second cells.

[0074] The processing unit selects the random access parameter corresponding to the system information of the requested second cell, and specifically is configured to: select the random access preamble corresponding to the PCI and / or ARFCN of the second cell.

[0075] In a possible implementation, the correspondence between the random access parameter and the second cell is based on one set of random access parameters corresponding to one second cell or the system information of the second cell, and the processing unit selects the random access parameter corresponding to the system information of the second cell, and specifically is configured to: select the random access parameter corresponding to the system information of the second cell based on the order of the second cell list or based on the identifier of the second cell.

[0076] In a possible implementation, the transceiving unit is further configured to receive a random access response, and the random access response includes the scheduling information of the system information of the second cell and / or the numbering information of the system information of the second cell and / or the message name of the system information of the second cell.

[0077] In a possible implementation, the processing unit is further configured to acquire the system information of the second cell according to scheduling information of the system information of the second cell in the first information, and / or scheduling information of the system information of the second cell in the system information response / random access response.

[0078] In a sixth aspect, an embodiment of the present application provides a communication apparatus, which can be a network device or a device (for example, a chip, a chip system, or a circuit) in a network device.

[0079] The beneficial effects can refer to the description of the second aspect, which will not be repeated here. The apparatus has the function of implementing the behaviors in the method embodiments of the second aspect. The function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0080] In a possible implementation, the communication apparatus includes:

[0081] The transceiver is configured to send a first type indication, the first type indication being used to indicate that the terminal device requests system information of a second cell in a first cell, the first cell being a neighbor cell of the second cell.

[0082] The transceiver is further configured to receive a system information request to request the network device to send the requested system information of the second cell.

[0083] In a possible implementation, the first type indication is included in first information, the first information being used to configure the system information request.

[0084] In a possible implementation, the first information further includes at least one of scheduling information of the system information of the second cell or random access parameters corresponding to the system information of the second cell, the random access parameters at least including random access preamble information or a random access preamble starting value; the scheduling information of the system information of the second cell includes at least one of a period of system information transmission of the second cell, a time length of system information transmission of the second cell, a location of system information transmission of the second cell, an SSB list of system information transmission of the second cell, a scheduling identifier of the system information of the second cell, or a request parameter of the system information of the second cell.

[0085] In a possible implementation, the first information includes numbering information, the numbering information being used to indicate one or more identifiers or numbers of the system information of the second cell.

[0086] In a possible implementation, the first information or the system information request comprises an identity of the second cell; the identity of the second cell is one or more of the following: a PCI, an ARFCN, a serial number of the second cell, number information of the second cell, a scheduling identity of system information of the second cell; wherein the number information of the second cell comprises a number of system information of the second cell, for example: the number of system information of the second cell in the system information number corresponding to the first cell.

[0087] In a possible implementation, the transceiver receives a system information request, specifically configured to receive the system information request through a random access message 3.

[0088] In a possible implementation, the transceiver is further configured to send a response of the system information request, wherein the response of the system information request comprises scheduling information of system information of the second cell and / or number of system information of the second cell and / or a message name of sending system information of the second cell.

[0089] In a possible implementation, the transceiver sends the response of the system information request, specifically configured to send the response of the system information request based on a TC-RNTI or an SI-RNTI or a scheduling identity of system information of the second cell.

[0090] In a possible implementation, the response of the system information request further comprises requested system information of the second cell.

[0091] In a possible implementation, the transceiver is further configured to send a random access response, wherein the random access response comprises scheduling information of system information of the second cell and / or number information of system information of the second cell and / or a message name of sending system information of the second cell.

[0092] In a seventh aspect, an embodiment of the present application provides a communication apparatus, which can be a terminal device or a device (for example, a chip or a chip system or a circuit) in a terminal device.

[0093] The beneficial effects can refer to the description of the third aspect, which will not be repeated here. The apparatus has the function of implementing the behaviors in the method examples of the third aspect. The function can be implemented by hardware or by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the above functions.

[0094] In a possible implementation, the communication apparatus comprises:

[0095] The transceiver is configured to receive broadcast state information of system information of a second cell, the broadcast state information being used to indicate a broadcast state of system information of the second cell, and the broadcast state information including that the system information of the second cell is in a broadcast state or a non-broadcast state.

[0096] The transceiver is further configured to send a system information request to request the network device to send the requested system information of the second cell according to the broadcast state information.

[0097] In a possible implementation, the transceiver is further configured to send a broadcast state request, and the broadcast state request is used to request broadcast state information of system information of the second cell.

[0098] In a possible implementation, the broadcast state information is a cell barring indication in a MIB of the second cell, and specifically, when the cell barring indication is non-barred, the system information of the second cell is in the broadcast state; or when the cell barring indication is barred, the system information of the second cell is in the non-broadcast state.

[0099] In a possible implementation, the broadcast state information is a SSB subcarrier offset (ssb-SubcarrierOffset) in a MIB of the second cell, and specifically, when the SSB subcarrier offset indication is broadcast state, the system information of the second cell is in the broadcast state; or when the SSB subcarrier offset indication is non-broadcast state, the system information of the second cell is in the non-broadcast state.

[0100] In a possible implementation, the transceiver sends the system information request to request the network device to send the requested system information of the second cell according to the broadcast state information, and specifically, when the broadcast state information is non-broadcast state, the system information request is sent to request the network device to send the requested system information of the second cell.

[0101] In a possible implementation, the broadcast state information further includes scheduling information of the system information of the second cell.

[0102] In a possible implementation, the transceiver sends the broadcast state request, and specifically, the broadcast state request is sent in the first cell or the second cell, and the first cell is a neighboring cell of the second cell.

[0103] In a possible implementation, the transceiver is further configured to receive parameters of the broadcast state request, and the parameters include at least one of an access occasion, an SSB list, and a random access preamble of the broadcast state request.

[0104] In a possible implementation, the parameter of the broadcast state request is contained in system information of the first cell or the second cell.

[0105] In a possible implementation, the transceiver receives the broadcast state information of the system information of the second cell, specifically, receives the broadcast state information of the system information of the second cell based on a TC-RNTI or an SI-RNTI or the broadcast state identifier.

[0106] In an eighth aspect, an embodiment of the present application provides a communication apparatus, which can be a network device or a device (for example, a chip, a chip system, or a circuit) in the network device.

[0107] The beneficial effects can be referred to the description of the fourth aspect, which will not be repeated here. The apparatus has the functions of implementing the behaviors in the method examples of the fourth aspect. The functions can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions.

[0108] In a possible implementation, the communication apparatus includes:

[0109] The transceiver is configured to send broadcast state information of system information of a second cell, the broadcast state information being used to indicate a broadcast state of the system information of the second cell, and the broadcast state information including that the system information of the second cell is in a broadcast state or a non-broadcast state, and the broadcast state information being used to enable a terminal device to send a system information request to request a network device to send requested system information of the second cell.

[0110] In a possible implementation, the transceiver is further configured to receive a broadcast state request, the broadcast state request being used to request the broadcast state information of the system information of the second cell.

[0111] In a possible implementation, the broadcast state information is a cell barring indication in MIB of the second cell, and specifically, when the cell barring indication is non-barred, the system information of the second cell is in the broadcast state; or when the cell barring indication is barred, the system information of the second cell is in the non-broadcast state.

[0112] In a possible implementation, the broadcast state information is SSB subcarrier offset (ssb-SubcarrierOffset) in MIB of the second cell, and specifically, when the SSB subcarrier offset indication is the broadcast state, the system information of the second cell is in the broadcast state; or when the SSB subcarrier offset indication is the non-broadcast state, the system information of the second cell is in the non-broadcast state.

[0113] In a possible implementation, the broadcast state information further includes scheduling information of system information of the second cell.

[0114] In a possible implementation, the transceiver receives the broadcast state request, specifically configured to receive the broadcast state request through the first cell or the second cell, the first cell being a neighbor cell of the second cell.

[0115] In a possible implementation, the transceiver is further configured to send parameters of the broadcast state request, the parameters including at least one of an access occasion of the broadcast state request, an SSB list, and a random access preamble.

[0116] In a possible implementation, the parameters of the broadcast state request are included in system information of the first cell or the second cell.

[0117] In a possible implementation, the transceiver sends the broadcast state information of the system information of the second cell, specifically configured to send the broadcast state information of the system information of the second cell based on a TC-RNTI or an SI-RNTI or the broadcast state identifier.

[0118] In a ninth aspect, a communication apparatus is provided. The apparatus can be a terminal device or a device (for example, a chip, a chip system, or a circuit) in a terminal device. The apparatus can include a processor, a memory, an input interface, and an output interface. The input interface is configured to receive information from other communication apparatuses outside the apparatus. The output interface is configured to output information to other communication apparatuses outside the apparatus. The processor invokes a computer program stored in the memory to execute the system information request method in the first aspect or any of the implementations of the first aspect, the third aspect, or any of the implementations of the third aspect.

[0119] In a tenth aspect, a communication apparatus is provided. The apparatus can be a network device or a device (for example, a chip, a chip system, or a circuit) in a network device. The apparatus can include a processor, a memory, an input interface, and an output interface. The input interface is configured to receive information from other communication apparatuses outside the apparatus. The output interface is configured to output information to other communication apparatuses outside the apparatus. The processor invokes a computer program stored in the memory to execute the system information request method in the second aspect or any of the implementations of the second aspect, the fourth aspect, or any of the implementations of the fourth aspect.

[0120] In an eleventh aspect, the present application provides a communication system, comprising at least one terminal device and at least one network device, wherein when the at least one terminal device and the at least one network device operate in the system, the at least one terminal device is configured to perform the method for requesting system information according to any one of the first aspect or the third aspect, and the at least one network device is configured to perform the method for requesting system information according to any one of the second aspect or the fourth aspect.

[0121] In a twelfth aspect, the present application provides a computer readable storage medium, wherein computer instructions are stored in the computer readable storage medium, and when the computer program or the computer instructions are executed, the method according to the first aspect and any possible implementation thereof and the method according to the fourth aspect and any possible implementation thereof are performed.

[0122] In a thirteenth aspect, the present application provides a computer program product comprising executable instructions, and when the computer program product is executed on a communication device, the method according to the first aspect and any possible implementation thereof and the method according to the fourth aspect and any possible implementation thereof are performed.

[0123] In a fourteenth aspect, the present application provides a communication device, comprising a processor, and optionally comprising a memory, wherein the processor is configured to implement the method according to the first aspect and any possible implementation thereof and the method according to the fourth aspect and any possible implementation thereof. The device can be a chip system, which can be composed of a chip or can comprise a chip and other discrete devices. BRIEF DESCRIPTION OF DRAWINGS

[0124] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows.

[0125] FIG. 1 is a schematic diagram of an architecture of a communication system 1000 to which the embodiments of the present application are applied;

[0126] FIG. 2 is a schematic diagram of a possible application scenario of an OD-SIB1 according to an embodiment of the present application;

[0127] FIG. 3 is a schematic diagram of a system information block according to an embodiment of the present application;

[0128] FIG. 4 is a schematic diagram of a flow of a system information request method according to an embodiment of the present application;

[0129] FIG. 5 is a schematic diagram of a flow of another system information request method according to an embodiment of the present application;

[0130] FIG. 6 is a schematic diagram of scheduling information included in a response to a system information request according to an embodiment of the present application;

[0131] FIG. 7 is a flow diagram of another method for requesting system information according to an embodiment of the present application;

[0132] FIG. 8 is a schematic diagram of a communication device according to an embodiment of the present application;

[0133] FIG. 9 is a schematic diagram of another communication device according to an embodiment of the present application;

[0134] FIG. 10 is a schematic diagram of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0135] The embodiments of the present application will be described in detail with reference to the drawings.

[0136] The terms "first" and "second" and the like in the description, claims and drawings of the present application are used for distinguishing between similar elements and not necessarily described in a particular sequence. Furthermore, the terms "comprise", "include", "contain", "have" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that comprises a list of steps or elements is not necessarily limited to the listed steps or elements, but can optionally include additional steps or elements not expressly listed or inherent to such process, method, system, product or device.

[0137] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0138] In the present application, "at least one" means one or more, "multiple" means two or more, "at least two" means two or three or more, and "and / or" is used to describe the relationship between associated objects, indicating that there can be three relationships, for example, "A and / or B" can mean: only A, only B, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0139] In the present application, "sending information" can be understood as a device sending information to another device, or can also be understood as a logical module in a device sending information to another logical module. For example, "a network device sending information" can be understood as the network device sending information to another device (such as a terminal), or can be understood as a logical module 1 in the network device sending information to a logical module 2 in the network device.

[0140] In the present application, "receiving information" can be understood as a device receiving information from another device, or can also be understood as a logical module in a device receiving information from another logical module. For example, "a network device receiving information" can be understood as the network device receiving information from another device (such as a terminal), or can be understood as a logical module 1 in the network device receiving information from a logical module 2 in the network device.

[0141] In the present application, "sending information to... (for example, a terminal)" can be understood as the destination of the information being the terminal. It can include directly or indirectly sending information to the terminal. "Receiving information from... (for example, a terminal)" or "receiving information from... (for example, a terminal)" can be understood as the source of the information being the terminal, and can include directly or indirectly receiving information from the terminal. The information can be processed as necessary between the source and the destination of the information, such as format change, etc., but the destination can understand the valid information from the source. Similar expressions in the present application can be similarly understood, and will not be described here.

[0142] In order to better understand the embodiments of the present application, first, the system architecture related to the embodiments of the present application will be introduced as follows:

[0143] Embodiments of the present application can be applied to a long term evolution (LTE) system, a 5th generation mobile communication (5G) system, a 6th generation mobile communication (6G) system and other communication systems evolved after 5G, a satellite communication system and a short-range wireless communication system. Among them, the wireless communication system mentioned in the embodiments of the present application includes but is not limited to three application scenarios of 5G / 6G mobile communication system: enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC) and massive machine type of communication (mMTC), long range (LoRa) system or vehicle-to-everything (V2X) system. The wireless communication system can include one or more network devices and one or more terminal devices.

[0144] The following is an exemplary explanation of the system architecture shown in FIG. 1. As shown in FIG. 1, the communication system 1000 includes a radio access network (RAN) 100, a core network (CN) 200 and an Internet 300. The RAN 100 includes at least one network device (e.g., 110a and 110b in FIG. 1, collectively referred to as 110) and at least one terminal (e.g., 120a-120j in FIG. 1, collectively referred to as 120). The RAN 100 can also include other RAN nodes, such as a wireless relay device and / or a wireless backhaul device (not shown in FIG. 1), etc. The terminal 120 is connected to the network device 110 in a wireless manner. The devices in the core network 200 and the Internet 300 can also be referred to as network devices, and the network devices in the core network 200 and the network devices in the RAN 100 can be different physical devices respectively, or can be the same physical device integrated with the logical functions of the core network and the logical functions of the radio access network.

[0145] It should be noted that the RAN 100 can be a 3rd generation partnership project (3GPP) related cellular system, such as a 4G, 5G mobile communication system, or an evolved system after 5G (e.g., a 6G mobile communication system). The RAN 100 can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), and the like. The RAN 100 can also be a communication system in which two or more of the above systems are fused. It should be stated that the number of network devices and terminal devices in FIG. 1 is only illustrative and should not be considered as a specific limitation of the present application. The terminal device and network device involved in the system architecture will be described in detail below.

[0146] I. Terminal device

[0147] The terminal device can also be referred to as a user equipment (UE), a mobile station (MS), a mobile terminal (MT), and the like, or a device for providing voice or data connectivity to a user, or an Internet of Things device. For example, the terminal device includes a handheld device having a wireless connection function, a vehicle-mounted device, and the like. At present, the terminal device can be a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile Internet device (MID), a wearable device (e.g., a smart watch, a smart bracelet, a pedometer, and the like), a vehicle-mounted device (e.g., a car, a bicycle, an electric vehicle, an airplane, a ship, a train, a high-speed rail, and the like), a satellite terminal, a virtual reality (VR) device, an augmented reality (AR) device, a smart point of sale (POS) machine, a customer-premises equipment (CPE), a wireless terminal in industrial control, a smart home device (e.g., a refrigerator, a television, an air conditioner, an electricity meter, and the like), a smart robot, a mechanical arm, a workshop device, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, or a wireless terminal in a smart home, a flight device (e.g., a smart robot, a hot air balloon, a drone, an airplane), and the like. The terminal device can also be other devices with terminal functions, for example, the terminal device can also be a device that plays a terminal function in D2D communication.

[0148] Embodiments of the present application do not limit the device form of the terminal, and the device for implementing the function of the terminal device can be a terminal device; it can also be a device capable of supporting the terminal device to implement the function, such as a chip system. The device can be installed in the terminal device or used with the terminal device. In embodiments of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0149] II. Network device

[0150] The network device is a node in a radio access network (RAN), and can also be referred to as a RAN node (or device). The network device is used to help the terminal to implement wireless access. The multiple network devices in the communication system 1000 can be nodes of the same type or nodes of different types. In some scenarios, the roles of the network device and the terminal device are relative, for example, the network element 120i in FIG. 1 can be a helicopter or a drone, which can be configured as a mobile base station. For the terminal 120j that accesses the RAN 100 through the network element 120i, the network element 120i is a base station; but for the network device 110a, the network element 120i is a terminal. The network device and the terminal device are sometimes both referred to as communication devices, for example, the network devices 110a and 110b in FIG. 1 can be understood as communication devices with base station functions, and the network elements 120a-120j can be understood as communication devices with terminal functions.

[0151] In a possible scenario, the network device can be a base station, an evolved NodeB (eNodeB), a transmitting and receiving point (TRP), a transmitting point (TP), a next generation NodeB (gNB), a next generation base station in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, a satellite, an integrated access and backhaul (IAB) node, a network device in a non-terrestrial network (NTN) communication system, i.e., can be deployed on a high-altitude platform or a satellite, etc. The network device can be a macro base station (such as 110a in FIG. 1), a micro base station or an indoor station (such as 110b in FIG. 1), a relay node or a donor node, or a wireless controller in a CRAN scenario. The network device can also be a device assuming a base station function in device to device (D2D) communication, vehicle-to-everything (V2X) communication, unmanned aircraft communication, or machine communication. Alternatively, the network device can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the network device in the V2X technology can be a road side unit (RSU).

[0152] All or part of the functions of the network device in this application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The network device in this application can also be a logical node, a logical module or software that can implement all or part of the functions of the network device.

[0153] In another possible scenario, a terminal is assisted by multiple network devices to implement wireless access, and different network devices respectively implement part of functions of a base station. For example, a network device can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, for example, in a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, in a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH). It can be understood that the network device can be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into network devices in a radio access network (RAN), or the CU can be divided into network devices in a core network (CN), which is not limited here.

[0154] In different systems, the CU (or CU-CP and CU-UP), DU, or RU can also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU, and RU are taken as examples for description in this application. Any one of the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0155] In the embodiments of this application, the form of the network device is not limited, and the device for implementing the function of the network device can be the network device; or can be a device capable of supporting the network device to implement the function, for example, a chip system. The device can be installed in the network device or used in combination with the network device.

[0156] It should be understood that the definitions of the above-mentioned various technical terms are only examples. For example, as technology continues to develop, the scope of the above definitions can also change, and the embodiments of this application are not limited.

[0157] First, in order to facilitate the understanding of the embodiments of the present application, further analysis and the technical problems to be solved in the present application are proposed. Currently, SIB1 is an important system information block in the 5G system, which contains important information such as cell selection, cell configuration, and other system information scheduling and change. The current SIB1 is periodically transmitted in the cell, and the transmission period is between 20ms and 160ms. The transmission opportunity of SIB1 can be determined by the configuration parameters in the MIB and the downlink scheduling of the network side.

[0158] Based on the energy saving demand of the 5G network, in the NES project, the network side is allowed to transmit SIB1 non-periodically, and when the terminal device needs to obtain SIB1, SIB1 request is transmitted, for example: the terminal device transmits UL-WUS to the network side, and the network side issues SIB1 after receiving the UL-WUS request of the terminal device, which is called on demand SIB1 (OD-SIB1). OD-SIB1 reduces the transmission of SIB1 by the network side to achieve the purpose of network power saving.

[0159] It can be understood that, wherein, based on the terminal device request to transmit SIB1 (OD-SIB1) to obtain energy saving gain, the cell can be called network energy saving (NES) cell. In the NES cell of the embodiments of the present application, the first cell (such as CellA) and the second cell can be included, and the first cell and the second cell are adjacent cells. The first cell can transmit the system information of the second cell to the terminal device based on the system information request of the terminal device. In the embodiments of the present application, NES and OD-SIB1 are temporary names of the functions, and both can represent the function / characteristic of transmitting SIB1 based on request.

[0160] Please refer to FIG. 2, which is a schematic diagram of a possible application scenario of OD-SIB1 provided by the embodiments of the present application. As shown in FIG. 2, CellA is an auxiliary cell of the NES cell, and generally and the NES cell are adjacent to each other. It can: 1, transmit UL-WUS configuration information; 2, receive the UL-WUS request sent by the terminal device; 3, transmit the SIB1 of the NES cell requested by the terminal device to the terminal device.

[0161] The technical problem to be solved by the embodiments of the present application: generally, CellA can assist the NES cell to perform the above operations, but how CellA transmits the SIB1 of the NES cell is a technical problem to be solved urgently.

[0162] In the prior art, as shown in FIG. 3, a possible solution can be that SIB1 of different NES cells is respectively contained in a single CellA system information block, such as SIB(x+1)...SIB(x+N); in order to indicate the correspondence between SIB(x+N) and the NES cell, SIBx is introduced to send the correspondence between the NES cell and SIB(x+N). In this way, the terminal device can determine how to initiate a request for SIB1 of the NES cell required to be acquired according to the mapping table in SIBx. In this solution, SIB1 of each NES cell is contained in a single SIB, and since the number of NES cells is variable, it is difficult to define the number of SIBs in CellA occupied by the NES cell; in addition, when the terminal device acquires SIB1 of the NES cell, SIBx needs to be acquired first, and then SIB(x+N) is acquired according to SIBx, which leads to a long acquisition time; finally, the change of SIBx...SIB(x+N) can cause the wake-up of the legacy terminal device, leading to unnecessary power consumption.

[0163] Therefore, an embodiment of the present application designs a system information request method, which can realize that CellA sends SIB1 of the NES cell in the OD-SIB1 scenario, and on the one hand, it can support that the NES terminal device (a terminal device only supporting NES OD-SIB1 capability) can quickly acquire SIB1, and on the other hand, it can reduce the impact on the legacy terminal device (a terminal device not supporting NES OD-SIB1 capability).

[0164] Based on the above, the present application proposes a system information request method, which will be described below through each embodiment. It should be understood that these methods can be used in combination with each other. The technical solutions provided by the present application are not limited to the processes described below. Further, the description of the scenario in the embodiments of the present application is only an example, and the solutions of the embodiments of the present application are not limited to only being applicable to the described scenario, but are also applicable to scenarios with similar problems.

[0165] The terminal device in the embodiments of the present application (as described in the corresponding embodiments below) can be a terminal device in the network architecture shown in FIG. 1, and the functions performed by the terminal device in the embodiments can also be performed by a device (for example, a chip, or a chip system, or a circuit) in the terminal device. The network device in the embodiments can be a network device in the network architecture shown in FIG. 1, and the functions performed by the network device in the embodiments can also be performed by a device (for example, a chip, or a chip system, or a circuit) in the network device. The embodiments of the present application are uniformly described here, and will not be described again in the following.

[0166] It should be noted that a cell is described from the perspective of resource management or mobility management or a service unit by a higher layer. The coverage of each network device can be divided into one or more cells, and the cell can be regarded as being composed of certain frequency domain resources. The cell can be an area in the coverage of the wireless network of the network device. In the embodiments of the present application, different cells can correspond to different network devices or the same network device. In the embodiments of the present application, the cell can be replaced by the network device corresponding to the cell. For example, the term “neighboring cell” is mentioned many times in the embodiments of the present application, and the “neighboring cell” can be replaced by the “neighboring base station” or the “neighboring network device”. For another example, the term “first cell sends” or “second cell sends” mentioned in the embodiments of the present application can be replaced by “the network device of the first cell sends” or “the network device of the second cell sends”.

[0167] The system information in the present application can be a system information message or a system information block, which is not limited herein.

[0168] In combination with the network architecture described above, a method for requesting system information provided by the embodiments of the present application is described below. Please refer to FIG. 4, which is a flowchart of a method for requesting system information provided by the embodiments of the present application. As shown in FIG. 4, the method can include the following steps.

[0169] S401, the network device sends a first type indication to the terminal device, and the first type indication is used to indicate that the terminal device requests system information of a second cell in a first cell. Correspondingly, the terminal device receives the first type indication from the network device.

[0170] The first type indication can indicate that the terminal device requests the system information of the second cell in the first cell. The first cell can be a neighboring cell of the second cell, and the second cell includes one or more cells.

[0171] For example, the first cell and the second cell can be NES cells (the NES cell is a cell in which the system information is sent based on a request, that is, the SIB1 in the NES cell is not periodically transmitted continuously), the system information (which can also be referred to as the first system information block) can be SIB1, and the system information request can be UL-WUS. In the embodiments of the present application, CellA is a name of the first cell, SIB1 is a form of system information, and UL-WUS is a form of system information request. It can be understood that the first cell, the second cell, the system information, and the system information request can also be other information / names, which are not limited in the embodiments of the present application.

[0172] S402, the terminal device sends a system information request to the network device (the first cell) to request the network device to send the system information of the requested second cell. Correspondingly, the network device (the first cell) receives the system information request from the terminal device. The network device here can refer to the network device receiving the system information request, which can be the network device of the first cell.

[0173] After the terminal device receives the first type indication from the network device, since the first type indication indicates that the terminal device requests the system information of the second cell in the first cell, the terminal device can send a system information request to the first cell to request the network device to send the system information of the requested second cell.

[0174] In this embodiment, for the application scenario of requesting the system information of the second cell from the first cell, by indicating the terminal device to request the system information of the second cell from the first cell through the first type indication, the terminal device can send a system information request to the first cell to request the system information of the second cell, and the network device can send the system information of the requested second cell after receiving the system information request. Therefore, the system information of the neighboring cell (such as the second cell) can be sent by the secondary cell (such as the first cell), thereby reducing the energy consumption of the second cell. Unlike the prior art, when the terminal device acquires the system information of the second cell, it needs to acquire SIBx first, and then acquire the specific SIB (x+N) according to SIBx, which results in a long acquisition time. In this embodiment, the information of the requested second cell is carried in the system information request, so that the network device can directly send the system information of the requested second cell, without the terminal device spending a long time to acquire the system information of the second cell, thereby reducing the energy consumption of the terminal device.

[0175] Next, a method of a system information request provided by the embodiment of the present application is described. Please refer to FIG. 5, which is a flowchart of another method of a system information request provided by the embodiment of the present application. As shown in FIG. 5, the method can include the following steps.

[0176] S501, the network device sends a type indication of the second cell to the terminal device. Correspondingly, the terminal device receives the type indication of the second cell from the network device.

[0177] The network device can send first information for configuring a system information request to the terminal device, and the first information can specifically include the type indication of the second cell, which can at least include a first type indication or a second type indication. The first type indication can be used to indicate that the terminal device requests the system information of the second cell in the first cell, and the second type indication can be used to indicate that the terminal device does not request the system information of the second cell in the first cell, i.e., the terminal device needs to request the system information of the second cell in the second cell.

[0178] Further, the first information can further comprise at least one of scheduling information of the system information of the second cell or random access parameters corresponding to the system information of the second cell, wherein the random access parameters comprise at least random access preamble information or a random access preamble starting value, and the scheduling information of the system information of the second cell comprises at least one of a period of transmission of the system information of the second cell, a duration of transmission of the system information of the second cell, a location of transmission of the system information of the second cell (such as common Searchspace information), a SSB list of transmission of the system information of the second cell, a scheduling identifier of the system information of the second cell, a request parameter of the system information of the second cell, and the like.

[0179] Further, the first information can further comprise numbering information for indicating one or more of the system information of the second cell or the system information identifier or the number. For example, when the numbering information is 26, 27, and 28, it indicates that the SIB 26, SIB 27, and SIB 28 in the first cell contain the system information of the second cell. Among them, the SIB 26 contains the system information of the first and second second cells, the SIB 27 contains the system information of the third second cell, and the SIB 28 contains the system information of the fourth second cell. Alternatively, the number is 26, that is, the SIB 26 in the first cell contains the system information of the second cell, but the specific system information of the second cell can be indicated separately, such as in the MAC CE or the MAC RAR.

[0180] Further, the first information can further comprise the identifier of the second cell for indicating which system information of the second cell can be requested to be acquired. The identifier of the second cell can be one or more of the following: PCI, ARFCN, the serial number of the second cell, the numbering information of the second cell, and the scheduling identifier of the system information of the second cell. The numbering information of the second cell comprises the number of the system information of the second cell, for example, the number of the system information of the second cell in the first cell.

[0181] The above first information can be transmitted as part of the UL-WUS configuration, or can be transmitted in the form of a neighbor cell list of the second cell. Alternatively, the first information can be contained in the system information and transmitted.

[0182] It can be understood that the type indication of the second cell can also not be contained in the first information, that is, the type indication of the second cell can be transmitted separately or contained in the first information and transmitted to the terminal device together with the first information. That is, the type indication of the second cell can be an explicit indication or an implicit indication through the parameters in the first information, and the embodiments of the present application do not limit this.

[0183] When the terminal device needs to acquire the system information of the second cell, the terminal device can request and acquire the system information of the second cell according to the following step S502. It should be noted that the terminal device also needs to meet the condition of requesting the system information of the second cell before sending the system information request to the network device, and the specific condition is not limited herein, which is uniformly described herein and will not be repeated hereinafter.

[0184] S502, the terminal device sends a system information request to the network device according to the type indication of the second cell to request the network device to send the system information of the requested second cell. Correspondingly, the network device receives the system information request from the terminal device.

[0185] The network device herein can refer to the network device receiving the system information request, which can be the network device of the first cell or the second cell. It can be understood that the type indication of the second cell can at least include a first type indication or a second type indication, wherein the first type indication can be used to indicate that the terminal device requests the system information of the second cell in the first cell, and the second type indication can be used to indicate that the terminal device does not request the system information of the second cell in the first cell. That is, if the type indication of the second cell is the first type indication, the network device is the network device of the first cell, and if the type indication of the second cell is the second type indication, the network device is the network device of the second cell.

[0186] The terminal device can determine the cell initiating the system information request according to the type indication of the second cell. Specifically as follows:

[0187] In a first possible implementation, the type indication of the second cell is the first type indication, and the terminal device needs to initiate the system information request in the first cell, that is, the terminal device sends the system information request to the first cell. The specific process can be as follows:

[0188] For the following steps S502a-S502e, the first information can include scheduling information of the system information of the second cell.

[0189] S502a, the terminal device sends a random access message MSG1 to the network device, and the random access message MSG1 includes a RACH preamble (RACH preamble);

[0190] S502b, the terminal device receives a random access response RAR sent by the network device. Optionally, the terminal device can receive the random access response through a random access message MSG2.

[0191] S502c, the terminal device sends a system information request to the network device (first cell) through a random access message MSG3. The system information request can include the second cell identifier. The second cell identifier is one or more of the following: PCI, ARFCN, the serial number of the second cell, the number information of the second cell, the scheduling identifier of the system information of the second cell; wherein the number information of the second cell includes the number of the system information of the second cell, for example: the number of the system information of the second cell in the system information number corresponding to the first cell.

[0192] For example, the system information request can be an RRCSystemInfoRequest message.

[0193] It can be understood that the random access message MSG3 can be understood as the third message (sent by the terminal device to the network device) in the four-step random access process, which can be used to carry data packets / messages / signaling, etc. With the development of technology, the random access message MSG3 can also have other names. The embodiments of the present application only take the random access message MSG3 as an example for description, and the random access message MSG3 can also have other names, which do not limit the name of the random access message MSG3.

[0194] S502d, the terminal device receives a response to the system information request. The response to the system information request includes scheduling information of the system information of the second cell and / or the number of the system information of the second cell and / or the message name for sending the system information of the second cell. The number of the system information of the second cell can be the number used by the terminal device when sending the system information request in the first cell or the number indicated by the network device for the requested system information. The message name for sending the system information of the second cell can be understood as defining a new message for sending the system information of the second cell, for example: SIB1forNESCell1.

[0195] Optionally, the terminal device can receive the response to the system information request through the random access message MSG4.

[0196] Optionally, the response to the system information request can also include the requested system information of the second cell. Further, the requested system information of the second cell can be indicated to the terminal device through the MAC CE or the radio resource control (RRC) message of the random access message MSG4.

[0197] Optionally, when the response to the system information request includes the requested system information of the second cell, the response to the system information request can be obtained according to the scheduling information of the system information of the second cell in the first information.

[0198] Optionally, the terminal device can receive the response of the system information request based on a TC-RNTI (or a cell radio network temporary identifier, C-RNTI) or a SI-RNTI or a scheduling identifier of the system information of the second cell.

[0199] S502e, the terminal device acquires the system information of the requested second cell.

[0200] The system information of the second cell can be included in a common or dedicated RRC message, for example, in the SI-message of the first cell.

[0201] The scheduling information of the system information of the second cell in the first information and / or the scheduling information of the system information of the second cell in the response of the system information request can jointly determine the scheduling of the system information of the second cell requested by the terminal device. That is, the terminal device can use the scheduling information of the system information of the second cell in the response of the system information request, can use the scheduling information of the system information of the second cell in the first information in the above step S501, or can jointly use the scheduling information of the system information of the second cell in the first information and the scheduling information of the system information of the second cell in the response of the system information request.

[0202] Referring to FIG. 6, FIG. 6 is a schematic diagram of the response of the system information request including scheduling information according to an embodiment of the present application. As shown in FIG. 6, the response of the system information request can include the scheduling information of the system information of the second cell. For example, the scheduling information of the system information of the second cell can be included in a MAC CE, and a specific LCID can indicate that the MAC CE includes the scheduling information of the system information of the second cell.

[0203] The terminal device acquires the system information of the requested second cell, specifically:

[0204] In a possible implementation, the terminal device can acquire the system information of the requested second cell according to the response of the system information request. Further, the terminal device can acquire the system information of the requested second cell according to the scheduling information of the system information of the second cell and / or the number of the system information of the second cell and / or the message name of the system information of the second cell included in the response of the system information request. Alternatively, the terminal device can acquire the system information of the requested second cell according to the system information of the second cell included in the response of the system information request.

[0205] In a possible implementation, the terminal device can receive a downlink control information (DCI), and the DCI includes scheduling information of system information of a requested second cell. The terminal device can receive the DCI based on a TC-RNTI or an SI-RNTI or a scheduling identifier of the system information of the second cell. In addition, the PDCCH or the DCI or the CRC of the DCI can be scrambled by using the above identifier, and the terminal device receives the system information of the requested second cell according to the scheduling information of the system information of the requested second cell.

[0206] Through the above steps S502a-S502e, for the application scenario of requesting the system information of the second cell from the first cell, the method of including the identifier of the second cell in the system information request is introduced, in which the system information of the second cell is sent when the NES terminal device requests, and the first cell does not need to allocate a specific system information number, and does not need to configure fixed scheduling information in the system information, so that the influence of the scheduling information / system information change on the legacy terminal device can be reduced.

[0207] The above steps S502a-S502e can be replaced by steps S502f-S502h, and the flow of steps S502f-S502h can be as follows:

[0208] For the above steps S502f-S502h, the first information can include random access parameters corresponding to the system information of the requested second cell, wherein the random access parameters at least include random access preamble information or a random access preamble start value.

[0209] S502f: The terminal device sends a random access message MSG1 to the network device, and the random access message MSG1 includes a RACH preamble and a system information request.

[0210] The terminal device can select random access parameters corresponding to the system information of the requested second cell, and send the system information request to the first cell by using the selected random access parameters. The correspondence between the random access parameters and the second cell is based on any of the following mapping rules:

[0211] A set of random access parameters corresponds to one second cell or the system information of the second cell; or

[0212] A set of random access parameters corresponds to all second cells or the system information of the second cell; or

[0213] A set of random access parameters corresponds to a group of second cells or the system information of the second cell, and the group of second cells includes a plurality of second cells.

[0214] Specifically, the terminal device can select the corresponding random access preamble of the PCI and / or ARFCN of the second cell.

[0215] If the correspondence between the random access parameters and the second cell is based on a set of random access parameters corresponding to one second cell or the system information of the second cell, for example: (preamble 1, PCI / ARFCN1), (preamble n, PCI / ARFCN n); (preamble 1, PCI / ARFCH list); (preamble 1 for NES SIB1), then further, the terminal device can select the random access parameters based on the order of the second cell list or based on the identity of the second cell. Exemplarily, taking the preamble as an example, it can specifically include StartIndex+order in NES cell list. Wherein, StartIndex can represent the starting value of the preamble, which can be included in the above first information, and order in NES cell list only includes the second cell corresponding to the first type indication, which can be the neighbor cell list of CellA.

[0216] If the second cell list is the neighbor cell list (or WUS configuration list) of the first cell, the second cell corresponding to the first type indication can be sorted according to the order in the neighbor cell list, for example:

[0217] StartIndex=25, NeighborCellList{NES1,NES2,…,NESn}

[0218] The second cell is NES1, and the SIB1 of the corresponding NES1 is sent in the SIBx1 of the second cell Cell A, wherein x1 is: x1=StartIndex+0=25

[0219] SIBx2@Cell A

[0220] SIB1@NES2 x2=StartIndex+1=26

[0221] …

[0222] The second cell is NESn, and the SIB1 of the corresponding NESn is sent in the SIBxn of the second cell Cell A, wherein xn is:

[0223] xn=StartIndex+n-1

[0224] If it is a neighbor cell list, different neighbor cell types can also be arranged in the following order:

[0225] Same frequency neighbor (SIB3) > Inter-frequency neighbor (SIB4) {first sorted by the order of the carrier in the list, then sorted by the order of the cell in the neighbor list in the specific carrier} > Inter-frequency neighbor {first sorted by the system priority, then sorted by the priority of the carrier, then sorted by the order of the cell in the neighbor list in the specific carrier}.

[0226] It can be understood that the order of the above-mentioned sorting relationship is only an example, and the embodiments of the present application do not limit the order of the sorting relationship.

[0227] S502g: The terminal device receives the random access response RAR through the random access message MSG2. The random access response can include the scheduling information of the system information of the second cell and / or the numbering information of the system information of the second cell and / or the message name of sending the system information of the second cell. For example, the random access response can be included in the RAR payload.

[0228] S502h: The terminal device acquires the system information of the requested second cell.

[0229] The terminal device acquires the system information of the requested second cell, specifically:

[0230] In one possible implementation, the terminal device can acquire the system information of the requested second cell according to the scheduling information of the system information of the second cell and / or the numbering information of the system information of the second cell and / or the message name of sending the system information of the second cell included in the random access response in the random access message MSG2.

[0231] In one possible implementation, the terminal device can receive the DCI, and the DCI includes the scheduling information of the system information of the requested second cell. The terminal device can receive the DCI based on the TC-RNTI or the SI-RNTI or the scheduling identifier of the system information of the second cell. In addition, the PDCCH or the DCI or the CRC of the DCI can be scrambled by the above-mentioned identifier, and the terminal device receives the system information of the requested second cell according to the scheduling information of the system information of the requested second cell.

[0232] Through the above-mentioned steps S502f-S502h, for the application scenario of requesting the system information of the second cell from the first cell, the method of including the identifier of the second cell in the system information request is introduced, in which the system information of the second cell is sent when the NES terminal device requests, and there is no need for the first cell to allocate specific system information numbering, and there is no need to configure fixed scheduling information in the system information, so that the influence of the scheduling information / system information change on the legacy terminal device can be reduced.

[0233] Compared with the steps S502a-S502e, the difference is that the steps S502a-S502e adopt a 4-step request procedure, while the steps S502f-S502h adopt a 2-step request procedure, so that the system information of the second cell can be obtained more quickly.

[0234] In a second possible implementation, if the type indication of the second cell is a second type indication, the terminal device needs to initiate a system information request in the second cell, that is, the terminal device initiates a system information request to the second cell. The terminal device can acquire the system information of the requested second cell at the occasion of the transmission of the system information of the requested second cell.

[0235] In summary, through the method embodiment shown in FIG. 5, by requesting the terminal device to acquire the system information of the neighboring cell in the second cell indicated by the first type indication (that is, the terminal device requests the system information of the second cell from the first cell), and by transmitting the system information of the second cell in a real-time scheduling manner, the influence of the transmission definition and change of the system information of the second cell in the first cell on the legacy terminal device can be reduced, while ensuring that the terminal device can acquire the requested system information in time.

[0236] That is, for the application scenario of requesting the system information of the second cell from the first cell, a method of including the second cell identifier in the system information request is introduced, in which the system information of the second cell is transmitted when requested by the NES terminal device, and the first cell does not need to allocate a specific system information number, nor configure fixed scheduling information in the system information, so that the influence of the scheduling information / system information change on the legacy terminal device can be reduced.

[0237] Next, a method of system information request provided by an embodiment of the present application is described. Please refer to FIG. 7, which is a flowchart of another method of system information request provided by an embodiment of the present application. As shown in FIG. 7, the method can include the following steps.

[0238] When the terminal device needs to acquire the system information of the second cell (the system information can be SIB1 or other system information (OSI)), the terminal device can request and acquire according to the following step procedure:

[0239] S701, the terminal device sends a broadcast state request to the network device, and the broadcast state request is used to request the broadcast state information of the system information of the second cell. Correspondingly, the network device receives the broadcast state request from the terminal device.

[0240] Exemplarily, the broadcast state request can be a random access procedure. For example, the terminal device can send a random access message MSG1 including a RACH preamble to the network device, and the random access message MSG1 can carry the broadcast state request.

[0241] Optionally, before the terminal device sends the broadcast state request to the network device, the terminal device can also receive parameters of the broadcast state request, the parameters including at least one of access occasions of the broadcast state request, an SSB list, and a random access preamble. Wherein, the parameters of the broadcast state request can be contained in system information of the first cell or system information of the second cell (for example, for a cell requesting system information of the second cell in the second cell, the terminal device can request the OSI broadcast state of the second cell).

[0242] It should be noted that the broadcast state can also be referred to as a sending state, and the two names can be interchangeable, and the name of the broadcast state in the embodiments of the present application is not limited.

[0243] Wherein, S701 is an optional step. It can be understood that when the terminal device needs to obtain the system information of the second cell, the terminal device can actively request the broadcast state information of the system information of the second cell from the network device, so that the terminal device can determine whether to send the system information request according to the broadcast state information.

[0244] S702, the network device sends the broadcast state information of the system information of the second cell to the terminal device. Correspondingly, the terminal device receives the broadcast state information from the network device.

[0245] Wherein, the broadcast state information is used to indicate the broadcast state of the system information of the second cell, and the broadcast state information includes that the system information of the second cell is in a broadcast state (broadcasting) or a non-broadcast state (not broadcasting). Wherein, the broadcast state information can be contained in a MAC CE or a MAC RAR or a RRC message.

[0246] Exemplarily, if the system information of the second cell in the broadcast state information is indicated as broadcasting, it can represent that the system information of the second cell is in the broadcast state; or if the system information of the second cell in the broadcast state information is indicated as not broadcasting, it can represent that the system information of the second cell is in the non-broadcast state. Optionally, the broadcast state information can indicate whether multiple system information of the second cell or multiple system of the second cell is in the broadcast state or the non-broadcast state in the form of bitmap.

[0247] For example, the broadcast status information is a cellBarred indication in the MIB of the second cell. Specifically, when the cellBarred indication is not barred, the system information of the second cell is in the broadcast state; or the cellBarred indication is barred, the system information of the second cell is in the non-broadcast state.

[0248] For example, the broadcast status information is ssb-SubcarrierOffset in the MIB of the second cell. Specifically, when the ssb-SubcarrierOffset indication is broadcast status, the system information of the second cell is in the broadcast state; or the ssb-SubcarrierOffset indication is non-broadcast status, the system information of the second cell is in the non-broadcast state.

[0249] It should be noted that the broadcast state can also mean that the system information is being transmitted, and is not limited to being transmitted in the form of broadcast.

[0250] In a possible implementation, the network device can send the broadcast status information of the system information of the second cell to the terminal device based on the TC-RNTI or the SI-RNTI or the broadcast status identifier.

[0251] It can be understood that the network device can send the broadcast status information of the system information of the second cell to the terminal device after receiving the broadcast status request sent by the terminal device in step S701, or can send the broadcast status information of the system information of the second cell to the terminal device in advance, so that the terminal device can directly determine whether to send a system information request according to the broadcast status information when the terminal device needs to obtain the system information of the second cell.

[0252] S703, the terminal device sends a system information request to request the network device to send the requested system information of the second cell according to the broadcast status information.

[0253] In a possible implementation, if the terminal device requests the system information of the second cell in the second cell, the terminal device can send a broadcast status request in the second cell.

[0254] In a possible implementation, if the terminal device requests the system information of the second cell in the first cell or the second cell, the terminal device can send a broadcast status request in the first cell. The broadcast status information can be the broadcast status of the system information in the neighboring cell (the second cell), for example, can be in the form of bitmap to indicate the broadcast status of the system information of all the neighboring cells (the second cell) of the first cell, and the specific status can be broadcast status / non-broadcast status. Further, the broadcast status information can also include scheduling information of the system information of the second cell, such as at least one of a position of system information transmission, a timing of system information transmission, and the like.

[0255] The terminal device sends a system information request according to the broadcast state information to request the network device to send the system information of the requested second cell, specifically:

[0256] For the scenario in which the terminal device needs to request the system information of the second cell in the first cell (such as the first type of indication shown in FIG. 5), the terminal device can determine, according to the broadcast state information, that the required system information of the second cell is in a non-broadcast state, and then the terminal device can acquire the system information of the second cell according to the steps S502a-S502e or the steps S502f-S502h. For the scenario in which the terminal device needs to request the system information of the second cell in the second cell (such as the second type of indication shown in FIG. 5), the terminal device can determine, according to the broadcast state information, that the required system information of the second cell is in a broadcast state, and then the terminal device can acquire the system information of the second cell at the time when the system information of the second cell is sent.

[0257] It should be noted that the determination of the broadcast state can be an optional step, and the process of acquiring the system information of the second cell according to the steps S502a-S502e or the steps S502f-S502h can also be considered as that the system information of the second cell is always in a non-broadcast state.

[0258] S704, the system information of the second cell is in a non-broadcast state, and the terminal device sends a system information request to the network device to request the network device to send the system information of the requested second cell.

[0259] The terminal device determines the broadcast state information of the system information of the second cell, and when the system information is in a non-broadcast state (non-broadcast state), the terminal device sends a system information request to the network device to request the network device to send the requested system information.

[0260] In a possible implementation, the terminal device can receive broadcast state information, the broadcast state information being used to indicate the broadcast state of the system information of the second cell, and the broadcast state information including that the system information of the second cell is in a broadcast state or a non-broadcast state. The broadcast state information can be any one or more of the following: the broadcast state information can be indication information in a master information block (MIB) in the second cell; or the broadcast state information can be indication information in DCI.

[0261] If the broadcast status information is the indication information in the MIB of the second cell, the indication information can be the broadcast status indication information of the system information in the MIB of the second cell, or the indication information can be the payload bit indication information of the PBCH, or the indication information can be the cellBarred setting indication information of the MIB of the second cell, or the indication information can be the ssb-SubcarrierOffset indication information of the MIB of the second cell.

[0262] If the broadcast status information is the indication information in the DCI, the indication information can be the transmission status indication information (such as SIB1 indicator) of the system information of the DCI, or the indication information can be the system information indication information (such as system information indicator) of the DCI.

[0263] When the terminal device determines that the system information is in a non-broadcast state, the system information request can be sent. Specifically:

[0264] The terminal device can determine the broadcast status of the system information of the second cell. Wherein, the terminal device can determine the broadcast status of the system information according to any of the following methods:

[0265] (1) The terminal device continuously detects the system information of the second cell for a first time T, and if the system information is not detected within the first time T, it is determined that the broadcast status of the system information of the second cell is in a "non-broadcast" state, otherwise the broadcast status of the system information of the second cell is in a "broadcast" state. Wherein, T can be N times of the system information transmission period of the second cell or the number of slots or the number of radio frames or N times of 20ms; N>0.

[0266] It can be understood that the system information can be sent in unicast form or in broadcast form, so "not sent" can also be understood as "not broadcast".

[0267] Wherein, T or N can be a value agreed by the terminal device and the network side; can be a value determined by the terminal device itself; can also be a value configured by the second cell or other cells (for example: the neighboring cell of the second cell or the last cell in which the terminal device resides) to the terminal device through signaling. Specifically: the value can be sent to the terminal device through the system information of the other cell or the RRC connection establishment / release / reconfiguration message, and " / " here can be understood as "and / or", that is, the value can be sent to the terminal device through the system information of the other cell or the RRC connection establishment, and / or release, and / or reconfiguration message.

[0268] (2) The network device can send broadcast status information to the terminal device, for example, the broadcast status information is the indication information of the MIB in the second cell. Specifically, the indication information can be the broadcast status indication information of the system information in the MIB in the second cell, or the indication information can be the payload bit indication information of the PBCH, or the indication information can be the cellBarred or ssb-SubcarrierOffset setting indication information of the MIB in the second cell.

[0269] After the terminal device receives the broadcast status information, it determines the broadcast status of the system information of the second cell according to the indication information of the MIB in the second cell. It can be any one or more of the following methods:

[0270] Method 1: The terminal device determines the broadcast status of the system information of the second cell according to the broadcast status information of the system information in the MIB in the second cell. Specifically, the MIB can introduce system information transmission indication of the second cell to indicate the broadcast status of the system information.

[0271] Method 2: The terminal device can determine the broadcast status of the system information of the second cell according to the payload bit indication information of the PBCH.

[0272] An exemplary (as in protocol 38212-i10) way of PBCH payload bit indication information can be as follows:

[0273] Generate the following additional timing related PBCH payload bits where:

[0274] are the 4 th ,3 rd ,3 nd ,and 1 st LSB of SFN, respectively;

[0275] is the half frame bit

[0276] if as defined in Clause 4.1of[5,TS38.213],

[0277] is the MSB of k SSBas defined in Clause 7.4.3.1 of [4, TS 38.211].

[0278] is reserved.

[0279] is the MSB of candidate SS / PBCH block index.

[0280] else if as defined in Clause 4.1 of [5, TS 38.213],

[0281] is the MSB of k SSB as defined in Clause 7.4.3.1 of [4, TS 38.211].

[0282] are the 5 th and 4 th bits of the candidate SS / PBCH block index, respectively.

[0283] else if as defined in Clause 4.1 of [5, TS 38.213],

[0284] are the 6 th , 5 th , and 4 th bits of the candidate SS / PBCH block index, respectively.

[0285] else

[0286] is the MSB of k SSB as defined in Clause 7.4.3.1 of [4, TS 38.211].

[0287] are reserved.

[0288] End if.

[0289] wherein, in is 10 and otherwise (2, 4, 6, 8), is a reserved bit, which can be used to indicate the broadcast status of the system information of the second cell. Further, the payload bit can be used to indicate simultaneously that the second cell is a NES cell and the broadcast status of the system information, for example: and may indicate simultaneously that the second cell is a NES cell and the system information is not transmitted, the second cell is a NES cell and the system information is transmitted, or the second cell is a non-NES cell.

[0290] Method 3: The terminal device can determine the broadcast status of the system information of the second cell according to the cellBarred setting indication information in the MIB of the second cell, or determine the broadcast status of the system information according to the ssb-SubcarrierOffset in the MIB.

[0291] Exemplarily (as in the protocol 38331-i00), a manner of indication information of the MIB can be as follows:

[0292] wherein, the cellBarred setting in the MIB can be used to indicate the broadcast status of the system information of the second cell. Exemplarily, if the cellBarred setting in the MIB of the second cell is set as barred, it can represent that the system information is in a “non-broadcast” state.

[0293] (3) The network device can send the broadcast status information to the terminal device, for example, the broadcast status information is indication information in the DCI. If the broadcast status information is indication information in the DCI, the indication information can be the broadcast status indication information of the system information of the DCI; or the indication information can be the system information indication information of the DCI.

[0294] After receiving the broadcast status information, the terminal device can determine the broadcast status of the system information of the second cell according to the broadcast status information in the DCI. Specifically, the terminal device can determine the broadcast status of the system information of the second cell according to the broadcast status information of the system information of the DCI; or can determine the broadcast status of the system information of the second cell according to the system information indication information of the DCI.

[0295] wherein, the DCI can be DCI1_0, that is, the broadcast status of the system information of the second cell can be indicated by the DCI1_0. Exemplarily (as in the protocol TS38212-i10….), a manner of indication information of the DCI_0 can be as follows:

[0296] The following information is transmitted by means of the DCI format 1_0 with CRC scrambled by SI-RNTI;

[0297] - Frequency domain resource assignment bits

[0298] is the size of CORESET 0

[0299] - Time domain resource assignment - 4 bits as difined in Clause 5.1.2.1 of [6, TS 38.214]

[0300] - VRB-to-PRB mapping - 1 bit according to Table 7.3.1.2.2-5

[0301] - Modulation and coding scheme - 5 bits as difined in Clause 5.1.3 of [6, TS 38.214], using Table 5.1.3.1-1

[0302] - Redundancy version - 2 bits as defined in Table 7.3.1.1.1-2

[0303] - System information indicator - 1 bit as defined in Table 7.3.1.2.1-2

[0304] - Reserved bits - 17 bits for operation in a cell with shared spectrum channel access in frequency range 1 or for operation in a cell in frequency range 2-2; otherwise 15 bits.

[0305] The terminal device can detect the DCI1_0 scrambled by the SI-RNTI according to the parameter of the system information configured in the MIB, and determine the broadcast state of the system information according to the broadcast state indication of the system information in the DCI1_0. Alternatively, the terminal device can detect the DCI1_0 scrambled by the SI-RNTI according to the parameter of the SIB1 configured in the MIB and a predetermined rule, and determine the broadcast state of the system information according to the broadcast state indication of the system information in the DCI1_0.

[0306] Alternatively, the terminal device can detect the DCI1_0 scrambled by the SI-RNTI according to the parameter of the system information configured in the MIB, and determine whether the system information is broadcast according to the broadcast state indication of the system information in the System information indicator of the DCI1_0. Alternatively, the terminal device can detect the DCI1_0 scrambled by the SI-RNTI according to the parameter of the system information configured in the MIB and a predetermined rule, and determine whether the system information is broadcast according to the broadcast state indication of the system information in the System information indicator of the DCI1_0. For example, the System information indicator is set to 1, the broadcast state of the system information is "broadcast", and the System information indicator is set to 0, the broadcast state of the system information is "non-broadcast".

[0307] If the broadcast state of the system information in the second cell is non-broadcast, the terminal device sends a system information request (such as UL-WUS).

[0308] S705, the network device sends a response to the system information request to the terminal device. Correspondingly, the terminal device receives the response to the system information request from the network device.

[0309] The response to the system information request can include scheduling information of the system information of the requested cell, and / or the number of the system information of the cell, and / or the message name of the system information of the second cell.

[0310] S706, the terminal device acquires the system information of the requested second cell according to the response to the system information request.

[0311] In a possible implementation, after receiving the response to the system information request from the network device, the terminal device can acquire the system information of the requested cell according to the scheduling information of the system information of the requested cell, and / or the number of the system information of the cell, and / or the message name of the system information of the second cell included in the response to the system information request.

[0312] Through the method embodiment shown in FIG. 7, the network device can send the broadcast state information of the system information of the second cell to the terminal device, or the terminal device can actively request the network device for the broadcast state information of the system information of the second cell, so that the terminal device can determine whether to send the system information request according to the broadcast state information, thereby reducing the unnecessary process of the terminal device requesting the system information. Meanwhile, the method embodiment can be applicable to the second cell of the first type indication and the second type indication at the same time, and therefore has the energy saving gain for the terminal device requesting the system information in the second cell.

[0313] The method embodiment provided by the embodiments of the present application is described above, and the device embodiment related by the embodiments of the present application is described below.

[0314] Please refer to FIG. 8, which is a structural schematic diagram of a communication device provided by the embodiments of the present application. The communication device can be a terminal device or a network device, or a device (for example, a chip, or a chip system, or a circuit) in the terminal device or the network device. As shown in FIG. 8, the communication device 800 at least includes a transceiver unit 801 and a processing unit 802; wherein:

[0315] In a possible implementation, the communication device is a terminal device.

[0316] The transceiver unit 801 is configured to receive the first type indication, the first type indication being used to indicate that the terminal device requests the system information of the second cell in the first cell, the first cell being a neighboring cell of the second cell.

[0317] The transceiver unit 801 is further configured to send the system information request to the first cell to request the network device to send the requested system information of the second cell.

[0318] In a possible implementation, the first type indication is contained in the first information, and the first information is used to configure the system information request.

[0319] In a possible implementation, the first information further includes at least one of the scheduling information of the system information of the second cell or the random access parameter corresponding to the system information of the second cell, and the random access parameter at least includes the random access preamble information or the random access preamble starting value; the scheduling information of the system information of the second cell includes at least one of the following: the period of the system information of the second cell, the time length of the system information of the second cell, the position of the system information of the second cell, the SSB list of the system information of the second cell, the scheduling identifier of the system information of the second cell, and the request parameter of the system information of the second cell.

[0320] In a possible implementation, the first information includes numbering information, which is used to indicate an identity or a number of one or more system information of the second cell.

[0321] In a possible implementation, the first information or the system information request includes an identity of the second cell; the identity of the second cell is one or more of the following: a PCI, an ARFCN, a serial number of the second cell, numbering information of the second cell, a scheduling identity of the system information of the second cell; wherein the numbering information of the second cell includes a number of the system information of the second cell, for example, the number of the system information of the second cell in the system information number corresponding to the first cell.

[0322] In a possible implementation, the sending of the system information request to the first cell includes: sending the system information request to the first cell through a random access message 3.

[0323] In a possible implementation, the transceiver 801 is further configured to receive a response of the system information request, and the response of the system information request includes scheduling information of the system information of the second cell and / or a number of the system information of the second cell and / or a message name in which the system information of the second cell is sent.

[0324] In a possible implementation, the receiving of the response of the system information request includes: receiving the response of the system information request based on a TC-RNTI or an SI-RNTI or a scheduling identity of the system information of the second cell.

[0325] In a possible implementation, the response of the system information request further includes the requested system information of the second cell, and the communication apparatus further includes:

[0326] The processing unit 802 is configured to acquire the system information of the second cell according to the response of the system information request.

[0327] In a possible implementation, the transceiver 801 sends the system information request to the first cell, and is specifically configured to:

[0328] select a random access parameter corresponding to the system information of the requested second cell, and send the system information request to the first cell through the random access parameter corresponding to the system information of the second cell.

[0329] In a possible implementation, the correspondence between the random access parameter and the second cell is based on any one of the following mapping rules:

[0330] One set of random access parameters corresponds to one second cell or the system information of the second cell; or

[0331] One set of random access parameters corresponds to all second cells or the system information of the second cell; or

[0332] One set of random access parameters corresponds to one group of second cells or system information of second cells, and the group of second cells includes a plurality of second cells;

[0333] The processing unit 802 selects the random access parameters corresponding to the system information of the requested second cell, specifically for selecting the corresponding random access preamble of the PCI and / or ARFCN of the second cell.

[0334] In one possible implementation, the correspondence between the random access parameters and the second cell is based on one set of random access parameters corresponding to one second cell or system information of second cells, and the processing unit 802 selects the random access parameters corresponding to the system information of the second cell, specifically for selecting the random access parameters corresponding to the system information of the second cell based on the order of the second cell list or based on the identification of the second cell.

[0335] In one possible implementation, the transceiver 801 is further configured to receive a random access response, and the random access response includes scheduling information of the system information of the second cell and / or numbering information of the system information of the second cell and / or a message name of the system information of the second cell.

[0336] In one possible implementation, the processing unit 802 is further configured to acquire the system information of the second cell according to the scheduling information of the system information of the second cell in the first information and / or the scheduling information of the system information of the second cell in the system information response / random access response.

[0337] In one possible implementation, the communication apparatus is a terminal device.

[0338] The transceiver 801 is configured to receive broadcast state information of the system information of the second cell, and the broadcast state information is used to indicate the broadcast state of the system information of the second cell, and the broadcast state information includes that the system information of the second cell is in a broadcast state or a non-broadcast state.

[0339] The transceiver 801 is further configured to send a system information request according to the broadcast state information to request the network device to send the system information of the requested second cell.

[0340] In one possible implementation, the transceiver 801 is further configured to send a broadcast state request, and the broadcast state request is used to request the broadcast state information of the system information of the second cell.

[0341] In a possible implementation, the broadcast state information is a cell barred indication in the MIB of the second cell. Specifically, when the cell barred indication is not barred, the system information of the second cell is in the broadcast state; or when the cell barred indication is barred, the system information of the second cell is in the non-broadcast state.

[0342] In a possible implementation, the broadcast state information is an SSB subcarrier offset (ssb-SubcarrierOffset) in the MIB of the second cell. Specifically, when the SSB subcarrier offset indicates the broadcast state, the system information of the second cell is in the broadcast state; or when the SSB subcarrier offset indicates the non-broadcast state, the system information of the second cell is in the non-broadcast state.

[0343] In a possible implementation, the transceiver 801 sends a system information request to request the network device to send the requested system information of the second cell according to the broadcast state information, specifically for: when the broadcast state information is the non-broadcast state, the transceiver 801 sends the system information request to request the network device to send the requested system information of the second cell.

[0344] In a possible implementation, the broadcast state information further includes scheduling information of the system information of the second cell.

[0345] In a possible implementation, the transceiver 801 sends a broadcast state request, specifically for: sending the broadcast state request in the first cell or the second cell, and the first cell is a neighboring cell of the second cell.

[0346] In a possible implementation, the transceiver 801 is further configured to receive parameters of the broadcast state request, and the parameters include at least one of an access occasion, an SSB, and a random access preamble of the broadcast state request.

[0347] In a possible implementation, the parameters of the broadcast state request are included in system information of the first cell or the second cell.

[0348] In a possible implementation, the transceiver 801 receives the broadcast state information of the system information of the second cell, specifically for: receiving the broadcast state information of the system information of the second cell based on a TC-RNTI or an SI-RNTI or the broadcast state identifier.

[0349] In a possible implementation, the communication apparatus is a network device.

[0350] The transceiver 801 is configured to send a first type indication, and the first type indication is used to indicate that a terminal device requests system information of a second cell in a first cell, and the first cell is a neighboring cell of the second cell.

[0351] The transceiver 801 is further configured to receive a system information request to request the network device to send system information of a second cell.

[0352] In a possible implementation, the first type indication is included in first information used for configuring the system information request.

[0353] In a possible implementation, the first information further includes at least one of scheduling information of the system information of the second cell or random access parameters corresponding to the system information of the second cell, the random access parameters including at least random access preamble information or a random access preamble starting value; and the scheduling information of the system information of the second cell includes at least one of a period of system information transmission of the second cell, a duration of system information transmission of the second cell, a location of system information transmission of the second cell, an SSB list of system information transmission of the second cell, a scheduling identifier of the system information of the second cell, or a request parameter of the system information of the second cell.

[0354] In a possible implementation, the first information includes numbering information used for indicating one or more identifiers or numbers of the system information of the second cell.

[0355] In a possible implementation, the first information or the system information request includes an identifier of the second cell, and the identifier of the second cell is one or more of the following: a PCI, an ARFCN, a serial number of the second cell, numbering information of the second cell, a scheduling identifier of the system information of the second cell; and the numbering information of the second cell includes a number of the system information of the second cell, for example, a system information number of the second cell in the first cell.

[0356] In a possible implementation, the transceiver 801 receives the system information request, specifically configured to receive the system information request through a random access message 3.

[0357] In a possible implementation, the transceiver 801 is further configured to send a response to the system information request, and the response to the system information request includes scheduling information of the system information of the second cell and / or a number of the system information of the second cell and / or a message name of the system information of the second cell.

[0358] In a possible implementation, the transceiver 801 sends the response to the system information request, specifically configured to send the response to the system information request based on a TC-RNTI or an SI-RNTI or a scheduling identifier of the system information of the second cell.

[0359] In a possible implementation, the response to the system information request further includes system information of the requested second cell.

[0360] In a possible implementation, the transceiver 801 is further configured to send a random access response, where the random access response includes scheduling information of the system information of the second cell and / or numbering information of the system information of the second cell and / or a message name of the system information of the second cell.

[0361] In a possible implementation, the communication apparatus is a network device.

[0362] The transceiver 801 is configured to send broadcast state information of the system information of the second cell, where the broadcast state information is used to indicate a broadcast state of the system information of the second cell, and the broadcast state information includes that the system information of the second cell is in a broadcast state or a non-broadcast state, and the broadcast state information is used for the terminal device to send a system information request to request the network device to send the system information of the requested second cell.

[0363] In a possible implementation, the transceiver 801 is further configured to receive a broadcast state request, where the broadcast state request is used to request the broadcast state information of the system information of the second cell.

[0364] In a possible implementation, the broadcast state information is a cell barred indication in a MIB of the second cell, and specifically, when the cell barred indication is not barred, the system information of the second cell is in the broadcast state; or when the cell barred indication is barred, the system information of the second cell is in the non-broadcast state.

[0365] In a possible implementation, the broadcast state information is a SSB subcarrier offset (ssb-SubcarrierOffset) in a MIB of the second cell, and specifically, when the SSB subcarrier offset indication is a broadcast state, the system information of the second cell is in the broadcast state; or when the SSB subcarrier offset indication is a non-broadcast state, the system information of the second cell is in the non-broadcast state.

[0366] In a possible implementation, the broadcast state information further includes scheduling information of the system information of the second cell.

[0367] In a possible implementation, the transceiver 801 receives the broadcast state request, and specifically, the transceiver 801 receives the broadcast state request through the first cell or the second cell, where the first cell is a neighboring cell of the second cell.

[0368] In a possible implementation, the transceiver 801 is further configured to send a parameter of the broadcast state request, the parameter comprising at least one of an access occasion of the broadcast state request, an SSB list, and a random access preamble.

[0369] In a possible implementation, the parameter of the broadcast state request is contained in system information of the first cell or the second cell.

[0370] In a possible implementation, the transceiver 801 sends the broadcast state information of the system information of the second cell, specifically configured to send the broadcast state information of the system information of the second cell based on a TC-RNTI or an SI-RNTI or the broadcast state identifier.

[0371] It can be understood that more descriptions about the transceiver 801 and the processor 802 can refer to the descriptions about the terminal device or the network device in the method embodiments of FIGS. 4-8, which will not be repeated here.

[0372] Referring to FIG. 9, FIG. 9 is a structural schematic diagram of another communication apparatus provided by an embodiment of the present application. The apparatus 900 is configured to implement the function of the network element of the present application, for example, the network element can be a network device, a terminal device, a DU or a CU. The apparatus 900 can be the network element, or a device capable of being installed in the network element, or a device capable of being used with the network element, which is not limited, for example, the device can be a chip or a chip system. As shown in FIG. 9, the apparatus 900 includes an interface 111 and a processor 112. Optionally, the processor 112 is configured to execute a program 114. The processor 112 can store the program 114, or obtain the program 114 from other devices or other devices (for example, from a memory 113 or from a third-party website, etc.). Optionally, the apparatus 900 includes the memory 113. The memory 113 is configured to store a program 115. The program 115 can be pre-stored or subsequently loaded. Optionally, the memory 113 can also be configured to store necessary data. These components work together to provide various functions described in the present application.

[0373] The processor 112 includes one or more processors, which are in combination a computing device. The processor 112 can include one or more of a microprocessor, a microcontroller, a digital signal processor (DSP), a digital signal processing device (DSPD), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), a programmable logic device (PLD), gate logic, transistor logic, discrete hardware circuits, processing circuitry, or other suitable hardware, firmware, and / or combinations thereof configured to perform the various functions described in the present application. The processor 112 can be a general purpose processor or a special purpose processor. For example, the processor 112 can be a baseband processor or a central processor. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to execute software programs and process data in the software programs.

[0374] The interface 111 can include any suitable hardware or software for enabling communication with one or more computer devices, such as the network elements of the present application. For example, in some embodiments, the interface 111 can include terminals and / or pins for coupling wires for wired connections or wireless transceivers for wireless connections. In some embodiments, the interface 111 can include a transmitter, a receiver, a transceiver, and / or an antenna. The interface can be configured to enable communication between computer devices, such as the network elements of the present application, using any available protocol, such as 3GPP standard protocols.

[0375] A program in the present application refers to software in a broad sense. The software can be program code, programs, subprograms, instruction sets, codes, code segments, software modules, application programs, software applications, etc. The program can be run in a processor and / or a computer to perform various functions and / or processes described in the present application.

[0376] The memory 113 can store necessary data required when the processor 112 executes software. The memory 113 can be implemented using any suitable storage technology. For example, the memory 113 can be any available storage media that can be accessed by a processor and / or computer. Non-limiting examples of storage media have RAM, ROM, EEPROM, CD-ROM, removable media, optical storage, magnetic storage devices, flash memory, registers, state machines, remote storage devices, or any other storage devices that can be used to carry or store software, data, or information and that can be accessed by a processor / computer.

[0377] The memory 113 and the processor 112 can be separately arranged or integrated together. The processor 112 can read information from the memory 113, store and / or write information in the memory. The memory 113 can be integrated in the processor 112. The processor 112 and the memory 113 can be arranged in an integrated circuit, such as an application-specific integrated circuit (ASIC). The integrated circuit can be arranged in a network element or other network node of the present disclosure.

[0378] Optionally, the apparatus 900 in the embodiments of the present application can be used to execute the methods described in the embodiments of the present application.

[0379] Please refer to FIG. 10, which is a structural schematic diagram of a terminal device provided in an embodiment of the present application. For the convenience of explanation, FIG. 10 only shows the main components of the terminal device. As shown in FIG. 10, the terminal device 1100 includes a processor, a memory, a control circuit, an antenna, and an input / output device. The processor is mainly used for processing communication protocols and communication data, controlling the whole terminal, executing software programs, and processing data of the software programs. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. The input / output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used for receiving data input by a user and outputting data to the user.

[0380] When the terminal is powered on, the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor performs baseband processing on the data to be transmitted, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit processes the baseband signal to obtain a radio frequency signal and transmits the radio frequency signal in the form of an electromagnetic wave through the antenna. When data is transmitted to the terminal, the radio frequency circuit receives a radio frequency signal through the antenna. The radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor. The processor converts the baseband signal into data and processes the data.

[0381] For ease of illustration, FIG. 10 only shows one memory and one processor. In an actual terminal, there can be multiple processors and memories. The memory can also be referred to as a storage medium or a storage device, and the like, and the embodiments of the present application do not limit this.

[0382] As an optional implementation manner, the processor can include a baseband processor and a central processor. The baseband processor is mainly used for processing communication protocols and communication data. The central processor is mainly used for controlling the entire terminal, executing software programs, and processing data of the software programs. The processor in FIG. 10 integrates the functions of the baseband processor and the central processor. Those skilled in the art can understand that the baseband processor and the central processor can also be independent processors interconnected through a bus or the like. Those skilled in the art can understand that the terminal can include multiple baseband processors to adapt to different network standards, and the terminal can include multiple central processors to enhance its processing capability. Various components of the terminal can be connected through various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processor can also be referred to as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

[0383] In one example, the antenna and control circuit with transceiving function can be regarded as a transceiving unit 1101 of the terminal device 1100, and the processor with processing function can be regarded as a processing unit 1102 of the terminal device 1100. As shown in FIG. 10, the terminal device 1100 includes the transceiving unit 1101 and the processing unit 1102. The transceiving unit can also be referred to as a transceiver, a transceiver, a transceiver, etc. Optionally, the device for realizing the receiving function in the transceiving unit 1101 can be regarded as a receiving unit, and the device for realizing the sending function in the transceiving unit 1101 can be regarded as a sending unit, that is, the transceiving unit 1101 includes a receiving unit and a sending unit. For example, the receiving unit can also be referred to as a receiver, a receiver, a receiving circuit, etc., and the sending unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, etc. Optionally, the above-mentioned receiving unit and sending unit can be integrated into one unit, or can be independent of each other. The above-mentioned receiving unit and sending unit can be in one geographical location, or can be dispersed in multiple geographical locations.

[0384] In one embodiment, the transceiving unit 1101 is configured to perform the operations performed by the transceiving unit 801 in the above-mentioned embodiments. The processing unit 1102 is configured to perform the operations performed by the processing unit 802 in the above-mentioned embodiments. The terminal device 1100 can also be configured to perform various methods performed by the terminal device in the above-mentioned method embodiments, which will not be repeated here.

[0385] The embodiments of the present application also provide a computer readable storage medium, which stores a computer program. The program is executed by a processor to implement the processes related to the terminal device or the terminal device in the communication method provided by the above-mentioned method embodiments.

[0386] The embodiments of the present application also provide a computer program product, which, when running on a computer or a processor, causes the computer or the processor to execute one or more steps in any of the above-mentioned communication methods. The constituent modules of the devices involved in the above-mentioned embodiments, if realized in the form of software function units and sold or used as independent products, can be stored in the computer readable storage medium.

[0387] The embodiments of the present application also provide a chip system, which includes at least one processor and a communication interface. The communication interface and the at least one processor are connected through a circuit. The at least one processor is configured to run a computer program or instructions to execute part or all of the steps of any one of the above-mentioned corresponding method embodiments. The chip system can be composed of a chip, or can include a chip and other discrete devices.

[0388] The embodiments of the present application also provide a communication system, which includes a terminal device and a network device. The specific description can be referred to the above-mentioned method.

[0389] It should be appreciated that the memory mentioned in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a hard disk drive (HDD), a solid-state drive (SSD), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM can be used, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). The memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto. The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing a storage function, used for storing program instructions and / or data.

[0390] It should also be understood that the processor mentioned in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0391] It should be noted that when the processor is a general processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor.

[0392] It should be noted that the memory described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0393] It should be understood that the size of the sequence number of the above-mentioned processes in various embodiments of the present application does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0394] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments provided herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0395] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0396] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0397] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e. they can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0398] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0399] The functions, if implemented in the form of software functional units and sold or used as independent products, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or the parts of the technical solutions that make essential contributions or the parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and various program code storage media.

[0400] The steps in the method embodiments of the present application can be adjusted, combined, and reduced in sequence according to actual needs.

[0401] The modules / units in the device embodiments of the present application can be combined, divided, and reduced according to actual needs.

[0402] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of system information request, characterized in that, The method comprises: receiving a first type indication, the first type indication being used to indicate that a terminal device requests system information of a second cell in a first cell, the first cell being a neighbor cell of the second cell; sending a system information request to the first cell to request the network device to send the requested system information of the second cell.

2. The method of claim 1, wherein, The first type indication is included in first information used to configure the system information request.

3. The method of claim 2, wherein, The first information further comprises at least one of scheduling information of the system information of the second cell or random access parameters corresponding to the system information of the second cell, the random access parameters at least comprising random access preamble information or random access preamble starting value; the scheduling information of the system information of the second cell comprises at least one of the following: period of system information transmission of the second cell, duration of system information transmission of the second cell, location of system information transmission of the second cell, synchronization signal and physical broadcast channel block SSB list of system information transmission of the second cell, scheduling identifier of the system information of the second cell, and request parameters of the system information of the second cell.

4. The method according to claim 2 or 3, characterized in that, The first information comprises numbering information used to indicate one or more identifiers or numbers of the system information of the second cell.

5. The method according to any one of claims 1 to 4, characterized in that, The first information or the system information request comprises an identifier of the second cell; the identifier of the second cell is one or more of the following: physical cell identifier PCI, absolute radio frequency channel number ARFCN, serial number of the second cell, numbering information of the second cell, scheduling identifier of the system information of the second cell; wherein the numbering information of the second cell comprises the number of the system information of the second cell.

6. The method according to any one of claims 1 to 5, characterized in that, The sending of the system information request to the first cell comprises: sending the system information request to the first cell through a random access message 3.

7. The method according to any one of claims 1 to 6, characterized in that, The method further comprises: receiving a response to the system information request, the response to the system information request comprising scheduling information of the system information of the second cell and / or number of the system information of the second cell and / or message name of the system information of the second cell.

8. The method of claim 7, wherein, The receiving of the response to the system information request comprises: receiving the response to the system information request based on temporary cell radio network temporary identifier TC-RNTI or system information radio network temporary identifier SI-RNTI or scheduling identifier of the system information of the second cell.

9. The method according to claim 7 or 8, characterized in that, The response to the system information request further comprises the requested system information of the second cell, and the method further comprises: obtaining the requested system information of the second cell according to the response to the system information request.

10. The method according to any one of claims 2-5, characterized in that, The sending of the system information request to the first cell comprises: selecting random access parameters corresponding to the system information of the requested second cell, and sending the system information request to the first cell through the random access parameters corresponding to the system information of the second cell.

11. The method of claim 10, wherein, The correspondence between the random access parameters and the second cell is based on any one of the following mapping rules: a set of random access parameters corresponds to one second cell or system information of a second cell; or one set of random access parameters corresponds to all second cells or system information of second cells; or one set of random access parameters corresponds to a group of second cells or system information of second cells, the group of second cells including multiple second cells; the selecting the random access parameters corresponding to the system information of the requested second cell includes: selecting the corresponding random access preamble of the physical cell identifier (PCI) and / or absolute radio frequency channel number (ARFCN) of the second cell.

12. The method of claim 11, wherein, the correspondence between the random access parameters and the second cell is based on one set of random access parameters corresponding to one second cell or system information of second cells, and the selecting the random access parameters corresponding to the system information of the second cell includes: selecting the random access parameters corresponding to the system information of the second cell based on the order of the second cell list or based on the identification of the second cell.

13. The method according to any one of claims 10-12, characterized in that, The method further includes: receiving a random access response, the random access response including scheduling information of the system information of the second cell and / or numbering information of the system information of the second cell and / or a message name of the system information of the second cell.

14. The method according to any one of claims 1 to 13, characterized in that, The method further includes: obtaining the system information of the second cell according to the scheduling information of the system information of the second cell in the first information and / or the scheduling information of the system information of the second cell in the response to the system information request / random access response.

15. A method of system information request, characterized by, The method includes: receiving broadcast state information of the system information of the second cell, the broadcast state information being used to indicate the broadcast state of the system information of the second cell, the broadcast state information including that the system information of the second cell is in a broadcast state or a non-broadcast state; sending a system information request to request the network device to send the system information of the requested second cell according to the broadcast state information.

16. The method of claim 15, wherein, The method further includes: sending a broadcast state request, the broadcast state request being used to request the broadcast state information of the system information of the second cell.

17. The method according to claim 15 or 16, characterized in that The broadcast state information is a cell barred indication in a master information block (MIB) of the second cell; when the cell barred indication is not barred, the system information of the second cell is in the broadcast state; or when the cell barred indication is barred, the system information of the second cell is in the non-broadcast state.

18. The method of claim 15 or 16, wherein, The broadcast state information is a synchronization signal block (SSB) subcarrier offset in the MIB of the second cell. when the SSB subcarrier offset indication is a broadcast state, the system information of the second cell is in the broadcast state; or when the SSB subcarrier offset indication is a non-broadcast state, the system information of the second cell is in the non-broadcast state.

19. The method according to any one of claims 15-18, characterized in that, The sending of the system information request according to the broadcast state information includes: when the system information of the second cell is in the non-broadcast state, sending the system information request.

20. The method according to any one of claims 15-19, characterized by, The broadcast state information further includes scheduling information of the system information of the second cell.

21. The method according to any one of claims 16-20, characterized by, The sending of the broadcast state request includes: sending the broadcast state request in the first cell or the second cell, the first cell being a neighbor cell of the second cell.

22. The method according to any one of claims 16-21, characterized by, The method further includes: receive parameters of the broadcast status request, the parameters comprising at least one of an access occasion of the broadcast status request, a synchronization signal and physical broadcast channel block SSB list, a random access preamble.

23. The method of claim 22, wherein, The parameters of the broadcast status request are contained in system information of the first cell or the second cell.

24. A communications device, characterized by The communication device comprises a processor and a storage medium, the storage medium stores instructions, and the instructions are run by the processor to implement the method in any one of claims 1-23.

25. A communications device, characterized by The communication device comprises a processor and a storage medium, the storage medium stores instructions, and the instructions are run by the processor to implement the method in any one of claims 1-23.

26. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises instructions, and when the instructions are run by the processor, the method in any one of claims 1-23 is implemented.

27. A computer program product, characterised in that, The computer program product comprises instructions, and when the instructions are run by the processor, the method in any one of claims 1-23 is implemented.

28. A communication system, characterized by The communication device comprises a processor and a storage medium, the storage medium stores instructions, and the instructions are run by the processor to implement the method in any one of claims 1-23.

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