Network access method and device, terminal equipment, base station and readable storage medium

Abstract

The invention discloses a network access method and device, terminal equipment, a base station and a readable storage medium, relates to the technical field of communication, and aims to solve the problem of signaling resource waste caused by useless early-stage operation of establishing connection between UE and a network side in the related technology. The method comprises the following steps: under the condition that terminal equipment is pre-accessed to a network for the first time, first information is sent to a base station, and the first information is used for indicating access request related information; and receiving a first feedback message sent by the base station, the first feedback message being determined based on the first information, and the first feedback message carrying access resource related information. According to the embodiment of the invention, the earlier-stage useless operation of establishing the connection between the UE and the network side in the related technology can be avoided, and signaling interaction resources are saved.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a network access method, apparatus, terminal device, base station, and readable storage medium. Background Art

[0002] With the evolution of communication technologies, different radio access technologies (RATs) will be deployed on the network side simultaneously, such as the simultaneous deployment of the 4th Generation Mobile Communication Technology (4G) and the 5th Generation Mobile Communication Technology (5G). Similar to the 5G voice fallback mechanism, the functions supported between different RATs may vary or have advantages and disadvantages. Therefore, it is necessary to allow the user equipment (UE) to access a cell of another system through fallback or redirection to complete a certain service.

[0003] In the evolved packet system (EPS) fallback mechanism for 5G voice, the service request during the voice establishment process is sent in Message 5 (Msg5) when the UE enters the connected state. That is, to enable the UE to enter the connected state, both the network side and the UE have performed necessary resource configuration and protocol stack establishment and other related processes. Redirection, on the other hand, requires releasing the UE back to the idle state again. The UE then reselects a suitable cell based on the reselection priority information carried in the release.

[0004] It can be seen that the preliminary operations of establishing a connection between the UE and the network side are useless, resulting in a waste of signaling resources. Summary of the Invention

[0005] Embodiments of this application provide a network access method, apparatus, terminal device, base station, and readable storage medium to solve the problem in the related art that the preliminary operations of establishing a connection between the UE and the network side are useless, resulting in a waste of signaling resources.

[0006] In a first aspect, embodiments of this application provide a network access method, which is executed by a terminal device. The method includes:

[0007] When the terminal device initially accesses the network, send a first piece of information to the base station, where the first piece of information is used to indicate access request-related information;

[0008] Receive a first feedback message sent by the base station, where the first feedback message is determined based on the first information, and the first feedback message carries access resource related information.

[0009] Optionally, the access request related information includes at least one of the following: the service requested by the terminal device, the frequency band the terminal device expects to access, and the cell the terminal device expects to access.

[0010] Optionally, the access resource related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, and cell registration information.

[0011] Optionally, the access resource related information includes cell access resource information, and the cell access resource information includes at least one of the access resource information of a first cell and the access resource information of a second cell. The first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0012] Optionally, the method further includes:

[0013] Perform network access based on the cell access resource information;

[0014] Alternatively, the access resource related information includes first uplink scheduling resource information, and the method further includes:

[0015] Send a resource acquisition request to the base station based on the first uplink scheduling resource information;

[0016] Receive cell access resource information including the access resource information of a second cell sent by the base station. The second cell is other cells outside the serving cell corresponding to the base station;

[0017] Perform network access based on the cell access resource information.

[0018] Optionally, the first information is carried in message MSG1, MSG3, or MSG5.

[0019] Optionally, the first information is indicated by a preconfigured preamble and / or random access channel RACH resource in MSG1;

[0020] Alternatively, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0021] Alternatively, the first information is carried in the terminal capability information and / or scheduling request SR in MSG5.

[0022] Optionally, before sending the first information to the base station, the method further includes:

[0023] Sending second information to the base station, where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, and / or is used to indicate that the terminal device supports accessing in multiple cells;

[0024] In the case where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, the method further includes:

[0025] Receiving second uplink scheduling resource information sent by the base station, where the second uplink scheduling resource information includes at least one of scheduling information of MSG3 and uplink scheduling resources;

[0026] The sending the first information to the base station includes:

[0027] Based on the second uplink scheduling resource information, sending the first information to the base station.

[0028] Optionally, before sending the first information to the base station, the method further includes:

[0029] Receiving third information sent by the base station, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports cooperative work;

[0030] The sending the first information to the base station includes:

[0031] Based on the third information, sending the first information to the base station.

[0032] Optionally, the first information includes the service requested by the terminal device;

[0033] In the case where the first cell supports the service, the first feedback message is sent through a random access response RAR or MSG4, and the access resource related information includes at least the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station;

[0034] In the case where the first cell does not support the service, the first feedback message is sent through RAR, MSG4 or a first downlink message, and the access resource related information includes at least one of the access resource information of a second cell, first uplink scheduling resource information, and cell registration information, the second cell is a cell other than the first cell, and the cell registration information is the registration information in the second cell.

[0035] Optionally, when the first cell does not support the service, the access resource related information includes at least one of the following:

[0036] Cell information supporting the service;

[0037] Frequency point information supporting the service;

[0038] Dedicated identifier or neighbor cell access resources;

[0039] Scheduling information of the uplink message;

[0040] Uplink scheduling resources;

[0041] A first indication bit for indicating that the terminal device continues to receive uplink scheduling resources;

[0042] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0043] Cell registration information.

[0044] Optionally, the first information includes a frequency point to be accessed and / or a cell to be accessed;

[0045] The access resource related information includes at least one of the following:

[0046] Accessible cell information;

[0047] Accessible frequency point information;

[0048] Scheduling information of the uplink message;

[0049] An indication of whether the cell to be accessed is active;

[0050] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0051] Cell registration information.

[0052] Optionally, performing network access based on the cell access resource information includes at least one of the following:

[0053] When the cell access resource information only includes the access resource information of the first cell, accessing the first cell based on the access resource information of the first cell;

[0054] When the cell access resource information only includes the access resource information of the second cell, terminating the access to the first cell and accessing the second cell based on the access resource information of the second cell;

[0055] When the cell access resource information includes the access resource information of the first cell and the access resource information of the second cell, access the first cell and the second cell respectively based on the access resource information of the first cell and the access resource information of the second cell.

[0056] Optionally, the cell access resource information only includes the access resource information of the second cell;

[0057] The performing network access based on the cell access resource information includes:

[0058] Send an access request to the second cell, where the access request carries fourth information, and the fourth information is used to indicate that the access request is initiated based on an indication of a cell outside the second cell.

[0059] In a second aspect, an embodiment of the present application further provides a network access method, which is executed by a base station, and the method includes:

[0060] Receive first information sent by a terminal device, where the first information is used to indicate access request related information;

[0061] Determine a first feedback message according to the first information, where the first feedback message carries access resource related information;

[0062] Send the first feedback message to the terminal device.

[0063] Optionally, the access request related information includes at least one of the following: the service requested by the terminal device, the frequency band that the terminal device expects to access, the cell that the terminal device expects to access.

[0064] Optionally, the access resource related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, cell registration information.

[0065] Optionally, the cell access resource information includes at least one of the access resource information of the first cell and the access resource information of the second cell, the first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0066] Optionally, the determining the first feedback message according to the first information includes:

[0067] Determine the cell access resource information or the first uplink scheduling resource information according to the first information;

[0068] The sending the first feedback message to the terminal device includes:

[0069] Send a first feedback message carrying the cell access resource information or the first uplink scheduling resource information to the terminal device;

[0070] Alternatively, the determining the first feedback message according to the first information includes:

[0071] Determine the cell access resource information according to the first information;

[0072] The sending the first feedback message to the terminal device includes:

[0073] Initiate access registration for the terminal device to the cell corresponding to the cell access resource information, and send a first feedback message carrying cell registration information to the terminal device, where the cell registration information is the registration information of the cell corresponding to the cell access resource information.

[0074] Optionally, when the first uplink scheduling resource information is carried in the first feedback message, after sending the first feedback message to the terminal device, the method further includes:

[0075] Receive a resource acquisition request sent by the terminal device based on the first uplink scheduling resource information;

[0076] In response to the resource acquisition request, send cell access resource information including the access resource information of the second cell to the terminal device.

[0077] Optionally, the first information is carried in MSG1, MSG3 or MSG5.

[0078] Optionally, the first information is indicated by a preconfigured preamble and RACH resource in MSG1;

[0079] Alternatively, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0080] Alternatively, the first information is carried in the terminal capability and / or scheduling request SR in MSG5.

[0081] Optionally, before receiving the first information sent by the terminal device, the method further includes:

[0082] Receive a second information sent by the terminal device, where the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device and / or the terminal device supports accessing multiple cells.

[0083] Optionally, when the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, the method further includes:

[0084] Based on the second information, send second uplink scheduling resource information to the terminal device, where the second uplink scheduling resource information includes at least one of scheduling information of MSG3 and uplink scheduling resources;

[0085] The receiving the first information sent by the terminal device includes:

[0086] Receive the first information sent by the terminal device based on the second uplink scheduling resource information.

[0087] Optionally, before receiving the first information sent by the terminal device, the method further includes:

[0088] Send third information to the terminal device, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports cooperative work.

[0089] Optionally, the first information includes the service requested by the terminal device;

[0090] When the first cell supports the service, the first feedback message is sent through RAR or MSG4, and the access resource related information at least includes the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station;

[0091] When the first cell does not support the service, the first feedback message is sent through RAR or the first downlink message of MSG4, and the access resource related information includes at least one of the access resource information of the second cell, the first uplink scheduling resource information, and the cell registration information. The second cell is another cell outside the first cell, and the cell registration information is the registration information in the second cell.

[0092] Optionally, when the first cell does not support the service, the access resource related information includes at least one of the following information:

[0093] Cell information supporting the service;

[0094] Frequency point information supporting the service;

[0095] Dedicated identifier or neighbor cell access resource;

[0096] The first uplink scheduling resource information includes at least one of the following:

[0097] Scheduling information of the uplink message;

[0098] Uplink scheduling resource;

[0099] A first indication bit for indicating that the terminal device continues to receive uplink scheduling resources;

[0100] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0101] Cell registration information.

[0102] Optionally, the first information includes a frequency band to be accessed and / or a cell to be accessed;

[0103] The access resource related information includes at least one of the following information:

[0104] Accessible cell information;

[0105] Accessible frequency band information;

[0106] Scheduling information of uplink messages;

[0107] An indication of whether the cell to be accessed is active;

[0108] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0109] Cell registration information.

[0110] In a third aspect, an embodiment of the present application further provides a network access device disposed in a terminal device. The network access device includes:

[0111] A first sending module, configured to send first information to a base station when the terminal device initially accesses the network for the first time. The first information is used to indicate access request related information;

[0112] A first receiving module, configured to receive a first feedback message sent by the base station, where the first feedback message is determined based on the first information, and the first feedback message carries access resource related information.

[0113] In a fourth aspect, an embodiment of the present application further provides a network access device disposed in a base station. The network access device includes:

[0114] A fifth receiving module, configured to receive first information sent by a terminal device, where the first information is used to indicate access request related information;

[0115] A determining module, configured to determine a first feedback message according to the first information, where the first feedback message carries access resource related information;

[0116] A fourth sending module, configured to send the first feedback message to the terminal device.

[0117] In a fifth aspect, an embodiment of the present application further provides a terminal device, including a transceiver and a processor, where

[0118] the transceiver is configured to send first information to a base station when the terminal device is about to initially access the network, where the first information is used to indicate access request related information;

[0119] the transceiver is further configured to receive a first feedback message sent by the base station, where the first feedback message is determined based on the first information, and the first feedback message carries access resource related information.

[0120] In a sixth aspect, an embodiment of the present application further provides a base station, which includes a transceiver and a processor, where

[0121] the transceiver is configured to receive first information sent by a terminal device, where the first information is used to indicate access request related information;

[0122] the processor is configured to determine a first feedback message according to the first information, where the first feedback message carries access resource related information;

[0123] the transceiver is further configured to send the first feedback message to the terminal device.

[0124] In a seventh aspect, an embodiment of the present application further provides a terminal device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, where when the processor executes the computer program, the steps in the network access method described in the first aspect are implemented.

[0125] In an eighth aspect, an embodiment of the present application further provides a base station, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, where when the processor executes the computer program, the steps in the network access method described in the second aspect are implemented.

[0126] In a ninth aspect, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps in the network access method described in the first aspect are implemented; or the steps in the network access method described in the second aspect are implemented.

[0127] In an embodiment of the present application, when a terminal device is about to initially access the network, it sends first information to a base station, where the first information is used to indicate access request-related information; and receives a first feedback message sent by the base station, where the first feedback message is determined based on the first information and carries access resource-related information.

[0128] The base station receives the information sent by the terminal device, where the first information is used to indicate access request-related information; and determines a first feedback message according to the first information, where the first feedback message carries access resource-related information.

[0129] In this way, when initially accessing the network, the terminal device reports relevant indication information to the base station, enabling the base station to provide corresponding access resource-related information according to the indication information, thereby avoiding redirection to other cells for access after the RRC establishment of the terminal device is completed, that is, avoiding the useless operations in the early stage of establishing a connection between the UE and the network side in the related art, and saving signaling interaction resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0130] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for describing the embodiments of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0131] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0132] Figure 2 is one of the flowcharts of the network access method provided by the embodiments of the present application;

[0133] Figure 3 is another flowchart of the network access method provided by the embodiments of the present application;

[0134] Figure 4 is one of the structural diagrams of the network access device provided by the embodiments of the present application;

[0135] Figure 5 is another structural diagram of the network access device provided by the embodiments of the present application;

[0136] Figure 6 is one of the structural diagrams of the terminal device provided by the embodiments of the present application;

[0137] Figure 7 is one of the structural diagrams of the base station provided by the embodiments of the present application;

[0138] Figure 8 It is the second structural diagram of the terminal device provided by the embodiment of the present application;

[0139] Figure 9 It is the second structural diagram of the base station provided by the embodiment of the present application. Specific implementation manners

[0140] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0141] To make the embodiments of the present application clearer, the following first introduces the technical knowledge related to the embodiments of the present application as follows:

[0142] 1. 5G voice solution

[0143] As the fourth-generation mobile communication technology (4th Generation Mobile Communication Technology, 4G) Long Term Evolution (LTE) enters the large-scale commercial stage, 5G for the future has become a global research and development hotspot. There are various different voice solutions for 5G, which are related to different networking modes. Currently, the 3rd Generation Partnership Project (3GPP) has defined two solutions for 5G New Radio (NR) networking, namely Standalone (SA) and Non-Standalone (NSA). For the 5G non-standalone networking mode, since the control plane is anchored on the 4G network, it is a natural choice to use the Voice over LTE (VoLTE) solution for voice services; for the 5G standalone networking mode, 3GPP has proposed two solutions: Voice Over New Radio (VoNR) and EPS Fallback. Among them, the VoNR solution means that the 5G access network and core network provide voice services based on the IP Multimedia Subsystem (IMS), while the EPS Fallback solution means that when the terminal initiates an IMS call on 5G, it falls back to 4G, and the VoLTE voice service is established through the 4G access network and core network. The fallback method can be handover, etc.

[0144] 2. Terminal 5G call establishment process

[0145] It mainly includes the following processes:

[0146] 1) After the terminal powers on and selects to camp on a 5G cell, it first performs the power-on registration process (i.e., Registration), then performs the Protocol Data Unit (PDU) session establishment process, that is, establishes a Quality of Service (QoS) flow of level 5 to carry Session Initialization Protocol (SIP) signaling, and then initiates the IMS registration process. When the terminal completes the IMS registration, it enters the idle state.

[0147] 2) When the terminal actively initiates a call in the idle state or receives a paging message as the called party, it first performs the ServiceRequest process, re-establishes a QoS flow of level 5 to carry SIP signaling, and then sends a SIP signaling invitation (Invite) to the IMS.

[0148] 3) After receiving it, the IMS notifies the core network to prepare to establish a bearer. Then the core network requests the base station to establish a QoS flow of level 1 to carry voice services. At this time, the VoNR and EPS Fallback solutions will be distinguished: If the base station selects the EPS Fallback solution, it will reject the establishment of the QoS flow for voice services and execute the EPS Fallback process, that is, switch or redirect the terminal to 4G, and then the terminal completes the VoLTE call establishment on 4G; If the base station selects the VoNR solution, it will establish the QoS flow for voice services and require the terminal to establish it by sending a Radio Resource Control (RRC) connection reconfiguration message until the VoNR voice establishment process is completed.

[0149] 3. Elastic Cell and Network Energy Saving Technologies

[0150] In the current discussions on elastic cell and network energy saving technologies, the concepts of anchor cell and non-anchor cell are involved. Generally speaking, the anchor cell is mainly used to receive system messages, initiate Random Access Channel (RACH), etc., while the non-anchor cell is mainly used for data reception.

[0151] As can be seen from the above introduction of related technologies, due to the evolution of technologies, different RAT technologies, such as 4G and 5G, will be deployed in the network simultaneously. Similarly, in the future, it may be the simultaneous deployment of 5G and other newer technologies, such as 6G. Therefore, there is a mechanism similar to 5G Voice Fallback. The functions supported between different RATs may vary or have advantages and disadvantages. Therefore, it is necessary to let the UE access a cell of other systems through Fallback or redirection to complete a certain service. In the EPS fallback mechanism for voice, the Service Request is sent in Msg5, that is, when the UE enters the connected state. It can be seen that both the network and the UE have made necessary resource configurations and protocol stack establishments for the UE to enter the connected state. For redirection, the UE needs to be released back to the Idle state again, and then the UE reselects a suitable cell based on the reselection priority information carried in the Release.

[0152] It can be seen that the previous operations of the UE and the network are useless. How to avoid the useless operations on the network side and the UE side, which also cause power consumption, and achieve the correct access of the UE is a problem existing in the prior art and also a problem that the solution of this application needs to solve.

[0153] In addition, similar to the above scenario, there is a similar scenario in the elastic cell / network energy-saving technology. The UE may be configured with an anchor cell and one non-anchor cell. Which non-anchor cell the network activates and schedules in also needs to be solved to avoid useless scheduling and additional network power consumption and achieve the correct access of the UE in this scenario.

[0154] Next, in combination with the accompanying drawings, the network access method provided by the embodiments of this application will be described in detail through specific embodiments and their application scenarios.

[0155] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the 6th Generation (6 th Generation, 6G) communication system.

[0156] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a base station 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle user equipment (VUE), a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine, a sensing service terminal, various sensors, a smart camera and other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The base station 12 can be referred to as a Node B, an Evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B, a Home Evolved Node B, a Transmitting Receiving Point (TRP), a sensing signal transmitting device, a sensing information receiving device or some other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical term. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0157] See Figure 2 , Figure 2 is a flowchart of a network access method provided by an embodiment of the present application, which is executed by a terminal device, such asFigure 2 As shown in the figure, it includes the following steps:

[0158] Step 201: When the terminal device is about to initially access the network for the first time, send a first piece of information to the base station, where the first piece of information is used to indicate information related to the access request.

[0159] The terminal device in the embodiments of the present application may refer to a UE, such as a mobile phone, a portable mobile terminal, etc. For the convenience of description, the embodiments of the present application mainly take the UE as an example for illustration.

[0160] The base station in the embodiments of the present application may refer to a 5G, 6G, etc. base station, and there is no specific limitation. Exemplarily, the embodiments of the present application are applicable to a UE initiating an access request to a 5G base station, and the 5G base station provides corresponding access resources for it, or provides 4G base station access resources for it so that the UE can quickly access 4G, rather than rejecting this access and then making the UE re-initiate the access process with the 4G base station.

[0161] In the embodiments of the present application, in order to avoid the useless operations in the early stage of establishing a connection caused by the base station selecting the EPS Fallback mechanism when the UE accesses the base station network, the signaling interaction process between the UE and the network side during network access is specially improved and designed. In the scenario where the UE initially accesses the network, first, the UE reports relevant indication information to the base station. Specifically, the UE sends a first piece of information to the base station, and the first piece of information is used to indicate information related to the access request, so as to inform the base station of the cell, frequency band, or service information that the UE wants to access, so that the base station can determine whether it can support the UE's access request based on this indication information, and thus determine the specific access resource-related information to be fed back to the UE.

[0162] Optionally, the information related to the access request includes at least one of the following: the service requested by the terminal device, the frequency band that the terminal device expects to access, and the cell that the terminal device expects to access.

[0163] That is, in some embodiments, the information related to the access request sent by the UE to the base station may include at least one of the service requested by the UE, the frequency band that the UE expects to access, and the cell that the UE expects to access. That is, the UE can send relevant indication information to the pre-access base station to inform the base station of the service that the UE wants to receive, the cell and / or frequency band that the UE expects to access, so that the base station can determine whether it can support the service requested by the UE, whether it is the cell that the UE expects to access, and / or whether the cell frequency band is the frequency band that the UE expects to access, etc., and thus determine the specific information content to be fed back to the UE.

[0164] Step 202: Receive a first feedback message sent by the base station, where the first feedback message is determined based on the first piece of information, and the first feedback message carries information related to the access resource.

[0165] The above first feedback message is determined by the base station according to the first information sent by the UE. Specifically, the base station can, based on this information, determine whether it can support the UE's access request, such as whether it supports the services requested by the UE, whether it is the cell that the UE expects to access, and / or whether the cell frequency is the frequency that the UE expects to access, etc., so as to determine the access resource-related information that needs to be specifically carried in the feedback message to be sent to the UE.

[0166] Optionally, the access resource-related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, cell registration information.

[0167] In some specific embodiments, when the base station determines that it can support the services requested by the UE, is the cell that the UE expects to access, the cell frequency is the frequency that the UE expects to access, etc., in any case, the base station can provide the UE with the access resources of the current cell. The current cell is also the serving cell corresponding to the base station. That is, in this case, the base station can send a message to the UE that includes the access resource information of its current cell, so that the UE can quickly access the current cell according to the access resource information provided by the base station.

[0168] When the base station determines that it cannot support the services requested by the UE, is not the cell that the UE expects to access, the cell frequency is not the frequency that the UE expects to access, etc., in any case, the base station can provide the UE with the access resources of other cells that can support the services requested by the UE, or the access resources of the cell that the UE expects, or the access resources of the cell with the frequency that the UE expects. Of course, the base station can also provide the UE with the access resources of the current cell, or the access resources of other accessible cells. The current cell is also the serving cell corresponding to the base station. That is, in this case, the base station can send a message to the UE that includes the access resource information of other relevant cells and / or the access resource information of the current cell, so that the UE can quickly access other cells and / or the current cell according to the access resource information provided by the base station.

[0169] It should be noted that before the base station sends the access resource information of other cells to the UE, the UE may also need additional uplink scheduling resources, such as uplink grant (UL Grant), to receive the access resources of the cell feedback by the UE. At this time, the base station can first send a message to the UE that includes the additional uplink scheduling resources, that is, the first feedback message carries the first uplink scheduling resource information. Subsequently, the UE can, based on this uplink scheduling resource, continue to listen for the next scheduling information from the base station and obtain the access resource information of other cells feedback by the base station to the UE.

[0170] In another case, the base station can directly allow the UE to access the current cell, or interact with other cells to allow the UE to access other cells. That is, the base station can assist the UE in registering for access to the current cell or other cells, and then send the registration information of the UE in the accessed cell to the UE. At this time, the cell registration information is carried in the first feedback message.

[0171] In this way, when the terminal device initially accesses the network, it reports relevant indication information to the base station, enabling the base station to provide corresponding cell access resources for the terminal device according to the indication information, or assist in providing corresponding cell access resources, or allow the terminal device to access the cell network, thereby avoiding redirection to other cells after the RRC establishment of the terminal device is completed, that is, avoiding the useless operations in the early stage of establishing a connection between the UE and the network side in the related art, and saving signaling interaction resources.

[0172] Optionally, the access resource related information includes cell access resource information, and the cell access resource information includes at least one of the access resource information of the first cell and the access resource information of the second cell. The first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0173] In some embodiments, the access resource related information includes cell access resource information. That is, after receiving the first information of the UE, the base station can provide cell access resource information for the UE, such as the access resource information of the first cell, that is, the current cell, and / or the access resource information of the second cell, that is, other accessible cells. The specific cell access resource information carried can be determined by the base station according to the first information of the UE.

[0174] Further, the method further includes:

[0175] Perform network access based on the cell access resource information;

[0176] Alternatively, the access resource related information includes first uplink scheduling resource information, and the method further includes:

[0177] Send a resource acquisition request to the base station based on the first uplink scheduling resource information;

[0178] Receive the cell access resource information including the access resource information of the second cell sent by the base station, where the second cell is other cells outside the serving cell corresponding to the base station;

[0179] Perform network access based on the cell access resource information.

[0180] In some embodiments, after receiving the first feedback message, the UE may perform network access based on the access resource information of the specific cell carried in the first feedback message, that is, initiate registration to these cells to establish an RRC connection.

[0181] In some other embodiments, the first feedback message carries first uplink scheduling resource information. The first uplink scheduling resource information may refer to uplink resource information for uplink scheduling, such as including additional UL Grants, for subsequent UL information transmission in RACH, such as for the UE to send measurement results or send other service requests, desired serving cell and / or frequency point information, etc. That is, after the base station receives the first information of the UE, if it determines that the current cell cannot support the UE's service, or is not the cell and frequency point desired by the UE, it may first provide the UE with uplink scheduling resource information so that the UE can use this uplink scheduling resource information to continue relevant resource scheduling with the base station.

[0182] Specifically, the UE may use the uplink scheduling resource information provided by the base station to send an uplink message to the base station, such as a resource acquisition request. The base station then responds to the UE's request and returns corresponding cell access resource information to the UE, such as feedback on the access resource information of other accessible cells. The UE may then perform network access based on this cell access resource information, that is, initiate registration to other cells to establish an RRC connection.

[0183] Through this implementation method, it is possible to enable the UE to quickly access the cell network, avoid excessive useless signaling interactions between the UE and the network side, and avoid additional power consumption.

[0184] Optionally, the first information is carried in Message (MSG) 1, MSG3, or MSG5.

[0185] In some embodiments, when the UE sends the first information to the base station, it may specifically be sent through messages such as MSG1, MSG3, or MSG5 in the random access process, that is, the first information may be carried in MSG1, MSG3, or MSG5 messages and sent to the base station. In this way, signaling overhead can be saved without the need for additional signaling resources to send indication information.

[0186] Optionally, the first information is indicated by a preconfigured preamble and / or random access channel RACH resource in MSG1;

[0187] Or, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identify (LCID) and a specified bit or bit sequence;

[0188] Alternatively, the first information is carried in the terminal capability information and / or Scheduling Request (SR) in MSG5.

[0189] In some embodiments, when the first information is sent through the MSG1 message, it can be implicitly indicated specifically through the preamble preconfigured in MSG1. For example, different services, cell IDs, or cell frequencies can be indicated by different preamble symbols, or it can also be implicitly indicated through RACH resources, such as different services, cell IDs, or cell frequencies are indicated by different RACH resources. Alternatively, it can also combine the preamble preconfigured in MSG1 and RACH resources to perform implicit indication with different combinations of preamble and RACH resources. In this way, implicit indication can be achieved through the MSG1 message, and to a certain extent, the security of information interaction between the UE and the network side can be improved.

[0190] In some other embodiments, when the first information is sent through the MSG3 message, it can be indicated specifically through a specific field in MSG3, such as indicated by a specific LCID, specific bit, or specific bit sequence. In this way, specific indication can be achieved through the MSG3 message, and the base station can obtain the UE indication information from the MSG3 message.

[0191] In still some other embodiments, when the first information is sent through the MSG5 message, it can be specifically indicated by being carried in the terminal capability information and / or SR in MSG5, that is, the first information is included in the terminal capability information and / or SR. In this way, specific indication can be achieved through the MSG5 message, and the base station can obtain the UE indication information from the MSG5 message.

[0192] Optionally, before step 201, the method further includes:

[0193] Sending second information to the base station, where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, and / or is used to indicate that the terminal device supports access in multiple cells;

[0194] In the case where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, the method further includes:

[0195] Receiving second uplink scheduling resource information sent by the base station, where the second uplink scheduling resource information includes at least one of the scheduling information of MSG3 and the uplink scheduling resources;

[0196] Step 201 includes:

[0197] Send the first information to the base station based on the second uplink scheduling resource information.

[0198] In some embodiments, before sending the first information, the UE may first send second information to the base station to instruct the base station to allocate uplink scheduling resources for sending the first information. Exemplarily, the UE may first instruct the base station to allocate more UL Grants for sending the first information; or it may be to instruct the base station that the UE supports accessing multiple cells (which may also be called indicating dual registration). In this way, subsequently, the base station may provide the UE with multiple cell access resources or allow the UE to access multiple cells.

[0199] If the second information is to instruct the base station to allocate uplink scheduling resources for the UE, the base station may, based on this instruction, send second uplink scheduling resource information to the UE. Specifically, the base station may provide scheduling information for MSG3 or MSG5, or may additionally provide uplink scheduling resources, such as providing additional UL Grants, for the UE to send the first information. That is, the UE may use the scheduling information for MSG3 provided by the base station and / or the additional UL Grants to send the first information, such as sending desired service, cell, and / or frequency point information.

[0200] Among them, when the UE sends the second information to the base station, it may specifically be sent through messages such as MSG1 or MSG3 in the random access process, that is, the second information may be carried in the MSG1 or MSG3 message and sent to the base station. In this way, signaling overhead can be saved without the need for additional signaling resources to send indication information. After receiving the first information, the base station allocates uplink scheduling resources for the UE, and the UE may, based on the allocated uplink scheduling resources, send the first information to the base station, specifically through messages such as MSG3 or MSG5 in the random access process.

[0201] In this way, the UE can obtain uplink scheduling resources from the base station, and then be able to send access-related indication information to the base station to achieve cell network access.

[0202] Optionally, before step 201, the method further includes:

[0203] Receiving third information sent by the base station, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports cooperative work;

[0204] Step 201 includes:

[0205] Sending the first information to the base station based on the third information.

[0206] In some embodiments, the UE may send the first information based on relevant indication information sent by the base station. Specifically, the base station may first send third information to the UE, and the third information may indicate services supported by different cells or frequency points. Thus, the UE may determine the services, cells, and / or frequency point information specifically indicated in the first information based on this information and its own service usage requirements. The third information may also indicate that the base station supports collaborative work, that is, it supports collaborative work with other base stations and can interact with other base stations when necessary to obtain access resource information of other cells to provide to the UE or directly access other cells for the UE.

[0207] In this way, the UE may determine which cell to send the first information to based on the third information and the actually requested service, or determine the expected cell and / or frequency point information specifically indicated in the first information, and then send the specific first information to the corresponding base station. In this embodiment, by initiating corresponding access indications based on the relevant information provided by the base station, the access efficiency and success rate can be improved.

[0208] It should be noted that the UE may also send the first information to the base station when it has dual registration capabilities, such as supporting registration in two or more cells.

[0209] Optionally, the first information includes the service requested by the terminal device;

[0210] When the first cell supports the service, the first feedback message is sent through a Random Access Response (RAR) or MSG4, and the access resource related information at least includes the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station;

[0211] When the first cell does not support the service, the first feedback message is sent through RAR, MSG4, or the first downlink message, and the access resource related information includes at least one of the access resource information of the second cell, the first uplink scheduling resource information, and the cell registration information. The second cell is other cells outside the first cell, and the cell registration information is the registration information in the second cell.

[0212] In the embodiments of the present application, the base station may perform scheduling based on the first information of the UE. The scheduling here may include the following situations:

[0213] 1. The UE indicates service information, that is, the first information indicates the service requested by the UE

[0214] In this case, there are also two different scheduling scenarios for the base station, specifically divided into the current cell supporting the service requested by the UE and the current cell not supporting the service. The specific scheduling methods are as follows:

[0215] If the current cell supports the service indicated by the UE, the base station can, according to the existing mechanism, send a corresponding feedback message so that the UE can complete the random access procedure and receive service data. Among them, the feedback message can be sent through messages such as RAR and MSG4. The access resource-related information carried in the feedback message can at least include the access resource information of the current cell. The feedback message can also carry a scheduling message for scheduling UE MSG3 and MSG5 so that the UE can complete RACH.

[0216] If the current cell does not support the service indicated by the UE, the base station can carry one or more of the following information in subsequent feedback messages, such as RAR, MSG4, or other new downlink messages: the access resource information of other cells that support the service indicated by the UE, the resource information for the UE to send uplink scheduling information, and the registration information in other cells that support the service indicated by the UE.

[0217] Through this implementation method, when the UE indicates the requested service, the base station can feedback corresponding information to the UE according to whether it supports the service, so that the UE can quickly access the cell network or assist the UE in accessing the available cell network.

[0218] Optionally, when the first cell does not support the service, the access resource-related information includes at least one of the following information:

[0219] Cell information that supports the service;

[0220] Frequency point information that supports the service;

[0221] Dedicated identifier or neighbor cell access resource;

[0222] Scheduling information of the uplink message;

[0223] Uplink scheduling resource;

[0224] The first indication bit, used to indicate that the terminal device continues to receive the uplink scheduling resource;

[0225] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0226] Cell registration information.

[0227] That is, in some embodiments, when the current cell does not support the service indicated by the UE, the base station can carry one or more of the following information in the feedback message:

[0228] 1) Scheduling information for the UE's uplink message, such as UL Grant, which is used for scheduling information such as scheduling UE MSG3 and MSG5, so that the UE can use the scheduling information to complete RACH;

[0229] 2) Information about other cells and / or frequency points that can support / access the UE's desired services;

[0230] 3) Additional UL Grant, which is used for UL information transmission other than uplink messages (MSG3 or MSG5) in RACH, such as sending measurement results, or for the UE to send information about other services and / or desired serving cells and / or frequency points;

[0231] 4) Indicator bit, which is used to indicate that the UE continues to receive the allocation of additional UL Grant. After receiving this indication, the UE will continue to listen, such as receiving the additional UL Grant described in 3);

[0232] 5) Dual registration indication information (i.e., access indication information), which is used to indicate whether the UE has completed RRC establishment in the current cell and in other cells;

[0233] 6) Dedicated UE identifier (represented as a UE-specific cell) or access resources for neighboring cells, which are used for access in the cell indicated by the base station;

[0234] 7) Cell registration information, such as the current cell can trigger the UE to register under other RATs, that is, the UE registers in other cells, and the corresponding registration information can be sent to the UE. Specifically, it can be sent through the current feedback message or through an additional downlink message.

[0235] Through the above information, it is possible to better instruct the UE to complete cell network access and improve the access efficiency and success rate.

[0236] It should be noted that in some embodiments, the current cell may interact with other cells (such as cells that can cooperate and / or cells indicated for the UE to access), such as indicating UE information to other cells and / or obtaining identifiers and / or access resources available for the UE in other cells. This process can occur when the Xn interface is established and / or during the UE's random access.

[0237] Optionally, the first information includes the frequency point and / or cell that the UE expects to access;

[0238] The access resource-related information includes at least one of the following:

[0239] Accessible cell information;

[0240] Accessible frequency point information;

[0241] Scheduling information of uplink messages;

[0242] Indicator of whether the cell to be accessed is active;

[0243] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0244] Cell registration information.

[0245] In the embodiments of the present application, when the base station schedules based on the first information of the UE, there may also be the following second case:

[0246] 2. The UE indication information is the frequency band and / or cell to be accessed, that is, the frequency band and / or cell to be accessed by the UE is indicated in the first information

[0247] In this case, the base station may carry one or more of the following information in the feedback message:

[0248] 1) Scheduling information of the UE uplink message, such as UL Grant, used for scheduling information of scheduling UE MSG3 and MSG5;

[0249] 2) Indicator of whether the UE expected cell is active, and possibly, information related to its synchronization signal block (SSB - Synchronization Signal Block, SSB), and / or access resources, etc.;

[0250] 3) Dual - registration indication information (that is, access indication information), used to indicate whether the UE completes RRC establishment in the current cell and RRC establishment in other cells;

[0251] 4) Information of accessible cells and / or frequency bands; this information may be different from the expected cell / frequency band information indicated by the UE;

[0252] 5) Cell registration information, such as the current cell can trigger the UE to register under other RATs, that is, the UE registers in other cells, and the corresponding registration information can be sent to the UE, specifically, it can be sent through the current feedback message or through an additional downlink message.

[0253] Through the above information, it is possible to better instruct the UE to complete cell network access and improve the access efficiency and success rate.

[0254] It should be noted that in the embodiments of the present application, when the base station schedules based on the first information of the UE, there may also be the following third case:

[0255] 3. The UE indicates that additional UL Grant is required for sending expected service and / or cell / frequency band information

[0256] In this case, similar to the foregoing, the base station may provide scheduling of MSG3, or additionally provide uplink scheduling for the transmission of UE expected services and / or cell / frequency information.

[0257] Optionally, the network access based on the cell access resource information includes at least one of the following:

[0258] In the case where the cell access resource information only includes the access resource information of the first cell, access the first cell based on the access resource information of the first cell;

[0259] In the case where the cell access resource information only includes the access resource information of the second cell, terminate accessing the first cell and access the second cell based on the access resource information of the second cell;

[0260] In the case where the cell access resource information includes the access resource information of the first cell and the access resource information of the second cell, access the first cell and the second cell respectively based on the access resource information of the first cell and the access resource information of the second cell.

[0261] That is, in some embodiments, according to different base station feedback information, the UE will perform different access behaviors. Specifically, based on the network feedback information, the UE may be one or more of the following behaviors:

[0262] 1) In the case where the base station feedback message indicates access in the current cell and / or provides access resources of the current cell, the UE can continue to complete RRC establishment in the current cell and then receive services;

[0263] 2) In the case where the base station feedback message indicates access in other cells and / or provides access resources of other cells, the UE can terminate the RACH process in the current cell based on the network indication information, reselect to other cells indicated by the network for access and service data reception;

[0264] 3) In the case where the base station feedback message carries uplink scheduling resource information, the UE can terminate the RACH process in the current cell, listen for the second scheduling information, obtain information about other cells, and reselect to other cells indicated by the network for access and service data reception;

[0265] 4) When it is indicated in the base station feedback message that access is performed in both the current cell and other cells, and / or when access resources of the current cell and other cells are provided, the UE may continue the RRC establishment of the current cell and perform RRC establishment in other cells indicated by the network (the network indication information may be directly carried in MSG2 or MSG4 or other messages), retain two RRCs, that is, access two cells, and receive service data in the cell indicated by the network;

[0266] 5) When the uplink scheduling resource information is carried in the base station feedback message, the UE may also perform measurements according to the measurement targets configured by the base station, and send the measurement results, and / or information of the currently accessed cell and frequency point.

[0267] In this way, the UE can perform corresponding access behaviors according to different feedback / scheduling information of the network, and can complete network access through fewer signaling interaction processes.

[0268] It should be noted that when the UE accesses the current cell and other cells simultaneously as described above, it is convenient for the UE to receive other services in the future without having to access the current cell again, and can also avoid the uselessness of the previous interaction process; while in the case where the UE is only connected to one cell, the UE behavior can be made simpler, and the network side does not need to perform resource configuration and scheduling with the UE.

[0269] Optionally, the cell access resource information only includes the access resource information of the second cell;

[0270] Performing network access based on the cell access resource information includes:

[0271] Sending an access request to the second cell, where the access request carries a fourth piece of information, and the fourth piece of information is used to indicate that the access request is initiated based on the indication of a cell outside the second cell.

[0272] That is, in some embodiments, if the UE is to access other cells to receive service data, relevant indications may be carried during the access process to indicate whether the access is initiated based on the indication of other cells outside the currently accessed cell. For example, when sending an access request to the second cell, it may be indicated in the request that the access is based on the indication of the first cell. In this way, the cell to which the access request is sent can give priority to responding to the access request of the UE, thereby increasing the access success probability.

[0273] In the embodiment of the present application, by indicating the network-expected services, cell, and frequency information when initially accessing the network, the base station can provide corresponding access resources for the UE based on the UE's indication or assist in providing access resources for other cells, without the UE having to fall back to other cells to re-initiate the access process. Compared with the existing redirection or cell reselection methods, it can well save the signaling interaction. That is, the embodiment of the present application can avoid redirecting to other cells for access after the UE's RRC establishment is completed and then receiving a certain service data, thus avoiding the additional power consumption and signaling interaction between the UE and the network side.

[0274] In the network access method of the embodiment of the present application, when the terminal device is about to initially access the network, it sends a first message to the base station, and the first message is used to indicate access request-related information; it receives a first feedback message sent by the base station, where the first feedback message is determined based on the first message, and the first feedback message carries access resource-related information. In this way, by reporting relevant indication information to the base station when initially accessing the network, the terminal device enables the base station to provide corresponding access resource-related information according to the indication information, thereby avoiding redirecting to other cells for access after the terminal device's RRC establishment is completed, that is, avoiding the useless operations in the early stage of establishing a connection between the UE and the network side in the related art and saving the signaling interaction resources.

[0275] See Figure 3 , Figure 3 is the flowchart of the network access method provided by the embodiment of the present application, which is executed by the base station. As Figure 3 shown, it includes the following steps:

[0276] Step 301: Receive a first message sent by the terminal device, where the first message is used to indicate access request-related information.

[0277] Step 302: Determine a first feedback message according to the first message, where the first feedback message carries access resource-related information.

[0278] Step 303: Send the first feedback message to the terminal device.

[0279] Optionally, the access request-related information includes at least one of the following: the service requested by the terminal device, the frequency point expected to be accessed by the terminal device, the cell expected to be accessed by the terminal device.

[0280] Optionally, the access resource-related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, cell registration information.

[0281] Optionally, the cell access resource information includes at least one of the access resource information of a first cell and the access resource information of a second cell, where the first cell is the serving cell corresponding to the base station, and the second cell is another cell outside the first cell.

[0282] Optionally, step 302 includes:

[0283] Determine the cell access resource information or the first uplink scheduling resource information according to the first information;

[0284] Step 303 includes:

[0285] Send a first feedback message carrying the cell access resource information or the first uplink scheduling resource information to the terminal device;

[0286] Alternatively, step 302 includes:

[0287] Determine the cell access resource information according to the first information;

[0288] Step 303 includes:

[0289] Initiate access registration for the terminal device to the cell corresponding to the cell access resource information, and send a first feedback message carrying cell registration information to the terminal device, where the cell registration information is the registration information of the cell corresponding to the cell access resource information.

[0290] Optionally, when the first uplink scheduling resource information is carried in the first feedback message, after step 303, the method further includes:

[0291] Receive a resource acquisition request sent by the terminal device based on the first uplink scheduling resource information;

[0292] In response to the resource acquisition request, send cell access resource information including the access resource information of the second cell to the terminal device.

[0293] Optionally, the first information is carried in MSG1, MSG3 or MSG5.

[0294] Optionally, the first information is indicated by a preconfigured preamble and RACH resource in MSG1;

[0295] Alternatively, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0296] Alternatively, the first information is carried in the terminal capabilities and / or the scheduling request (SR) in MSG5.

[0297] Optionally, before step 301, the method further includes:

[0298] Receiving second information sent by the terminal device, where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, and / or the terminal device supports accessing multiple cells.

[0299] Optionally, when the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, the method further includes:

[0300] Based on the second information, sending second uplink scheduling resource information to the terminal device, where the second uplink scheduling resource information includes at least one of the scheduling information of MSG3 and the uplink scheduling resources;

[0301] Step 301 includes:

[0302] Receiving the first information sent by the terminal device based on the second uplink scheduling resource information.

[0303] Optionally, before step 301, the method further includes:

[0304] Sending third information to the terminal device, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports collaborative work.

[0305] Optionally, the first information includes the service requested by the terminal device;

[0306] When the first cell supports the service, the first feedback message is sent via RAR or MSG4, and the access resource related information at least includes the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station;

[0307] When the first cell does not support the service, the first feedback message is sent via RAR, MSG4, or a first downlink message, and the access resource related information includes at least one of the access resource information of a second cell, first uplink scheduling resource information, and cell registration information. The second cell is a cell other than the first cell, and the cell registration information is the registration information in the second cell.

[0308] Optionally, when the first cell does not support the service, the access resource related information includes at least one of the following information:

[0309] Cell information supporting the service;

[0310] Frequency point information supporting the service;

[0311] Dedicated identifier or neighbor cell access resource;

[0312] The first uplink scheduling resource information includes at least one of the following:

[0313] Scheduling information of the uplink message;

[0314] Uplink scheduling resource;

[0315] A first indication bit for indicating that the terminal device continues to receive uplink scheduling resources;

[0316] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0317] Cell registration information.

[0318] Optionally, the first information includes a frequency point to be accessed and / or a cell to be accessed;

[0319] The first feedback message carries at least one of the following information:

[0320] Accessible cell information;

[0321] Accessible frequency point information;

[0322] Scheduling information of the uplink message;

[0323] An indication of whether the cell to be accessed is active;

[0324] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0325] Cell registration information.

[0326] It should be noted that, as the implementation manner on the base station side corresponding to the Figure 2 shown embodiment, the specific implementation manner can refer to the relevant introduction in the foregoing embodiment, and the same technical effects can be achieved. To avoid repetition, it will not be elaborated here.

[0327] In the network access method according to an embodiment of the present application, a base station receives first information sent by a terminal device, where the first information is used to indicate access request-related information; determines a first feedback message according to the first information, where the first feedback message carries access resource-related information; and sends the first feedback message to the terminal device. In this way, when the terminal device initially accesses the network, it reports relevant indication information to the base station, enabling the base station to provide corresponding access resource-related information according to the indication information, thereby avoiding redirecting to other cells for access after the RRC establishment of the terminal device is completed, that is, avoiding the useless operations in the early stage of establishing a connection between the UE and the network side in the related art, and saving signaling interaction resources.

[0328] An embodiment of the present application further provides a network access device, which is set in a terminal device. Refer to Figure 4 , Figure 4 which is a structural diagram of the network access device provided by an embodiment of the present application. Since the principle of the network access device for solving problems is similar to that of the network access method in the embodiment of the present application, the implementation of the network access device can refer to the implementation of the method, and the repeated parts will not be described again.

[0329] As Figure 4 shown, the network access device 400 includes:

[0330] A first sending module 401, configured to send first information to a base station in the case that the terminal device pre-initially accesses the network, where the first information is used to indicate access request-related information;

[0331] A first receiving module 402, configured to receive a first feedback message sent by the base station, where the first feedback message is determined based on the first information, and the first feedback message carries access resource-related information.

[0332] Optionally, the access request-related information includes at least one of the following: the service requested by the terminal device, the frequency band expected to be accessed by the terminal device, and the cell expected to be accessed by the terminal device.

[0333] Optionally, the access resource-related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, and cell registration information.

[0334] Optionally, the access resource-related information includes cell access resource information, and the cell access resource information includes at least one of the access resource information of a first cell and the access resource information of a second cell, where the first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0335] Optionally, the network access device 400 further includes:

[0336] An access module, configured to perform network access based on the cell access resource information;

[0337] Alternatively, the access resource related information includes first uplink scheduling resource information, and the network access device 400 further includes:

[0338] A second sending module, configured to send a resource acquisition request to the base station based on the first uplink scheduling resource information;

[0339] A second receiving module, configured to receive the cell access resource information including the access resource information of a second cell sent by the base station, where the second cell is a cell other than the serving cell corresponding to the base station;

[0340] An access module, configured to perform network access based on the cell access resource information.

[0341] Optionally, the first information is carried in message MSG1, MSG3 or MSG5.

[0342] Optionally, the first information is indicated by a preconfigured preamble and / or random access channel RACH resource in MSG1;

[0343] Alternatively, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0344] Alternatively, the first information is carried in the terminal capability information and / or scheduling request SR in MSG5.

[0345] Optionally, the network access device 400 further includes:

[0346] A third sending module, configured to send second information to the base station, where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device and / or to indicate that the terminal device supports accessing in multiple cells;

[0347] When the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, the network access device 400 further includes:

[0348] A third receiving module, configured to receive second uplink scheduling resource information sent by the base station, where the second uplink scheduling resource information includes at least one of the scheduling information of MSG3 and the uplink scheduling resources;

[0349] The first sending module 401 is configured to send the first information to the base station based on the second uplink scheduling resource information.

[0350] Optionally, the network access device 400 further includes:

[0351] A fourth receiving module, configured to receive third information sent by the base station, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports cooperative work;

[0352] A first sending module 401 is configured to send the first information to the base station based on the third information.

[0353] Optionally, the first information includes the service requested by the terminal device;

[0354] When the first cell supports the service, the first feedback message is sent through a random access response RAR or MSG4, and the access resource related information at least includes the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station;

[0355] When the first cell does not support the service, the first feedback message is sent through RAR, MSG4 or a first downlink message, and the access resource related information includes at least one of the access resource information of a second cell, the first uplink scheduling resource information, and the cell registration information. The second cell is another cell outside the first cell, and the cell registration information is the registration information in the second cell.

[0356] Optionally, when the first cell does not support the service, the access resource related information includes at least one of the following information:

[0357] Cell information supporting the service;

[0358] Frequency point information supporting the service;

[0359] Dedicated identifier or neighbor cell access resource;

[0360] Scheduling information of the uplink message;

[0361] Uplink scheduling resource;

[0362] A first indication bit, used to indicate that the terminal device continues to receive uplink scheduling resources;

[0363] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0364] Cell registration information.

[0365] Optionally, the first information includes the frequency point to be accessed and / or the cell to be accessed;

[0366] The access resource related information includes at least one of the following:

[0367] Accessible cell information;

[0368] Accessible frequency point information;

[0369] Scheduling information of uplink messages;

[0370] An indication of whether the cell to be accessed is active;

[0371] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0372] Cell registration information.

[0373] Optionally, the access module includes at least one of the following:

[0374] A first access unit, configured to access the first cell based on the access resource information of the first cell when the cell access resource information only includes the access resource information of the first cell;

[0375] A second access unit, configured to terminate accessing the first cell and access the second cell based on the access resource information of the second cell when the cell access resource information only includes the access resource information of the second cell;

[0376] A third access unit, configured to access the first cell and the second cell respectively based on the access resource information of the first cell and the access resource information of the second cell when the cell access resource information includes the access resource information of the first cell and the access resource information of the second cell.

[0377] Optionally, the cell access resource information only includes the access resource information of the second cell;

[0378] The access module is configured to initiate an access request to the second cell, where a fourth piece of information is carried in the access request, and the fourth piece of information is used to indicate that the access request is initiated based on an indication of a cell outside the second cell.

[0379] The network access device 400 provided by the embodiments of the present application can execute Figure 2 the method embodiments shown, and the implementation principles and technical effects are similar, which will not be elaborated here in this embodiment.

[0380] The network access device 400 according to the embodiment of the present application, when initially accessing the network, sends first information to the base station, where the first information is used to indicate access request related information; and receives a first feedback message sent by the base station, where the first feedback message is determined based on the first information, and the first feedback message carries access resource related information. In this way, when the terminal device initially accesses the network, by reporting relevant indication information to the base station, the base station can provide corresponding access resource related information according to the indication information, thereby avoiding redirecting to other cells for access after the RRC establishment of the terminal device is completed, that is, avoiding the useless operations in the early stage of establishing a connection between the UE and the network side in the related art, and saving signaling interaction resources.

[0381] The embodiment of the present application further provides a network access device, which is disposed in the base station. Refer to Figure 5 , Figure 5 which is the structural diagram of the network access device provided by the embodiment of the present application. Since the principle of the network access device for solving problems is similar to that of the network access method in the embodiment of the present application, the implementation of the network access device can refer to the implementation of the method, and the repeated parts will not be described again.

[0382] As Figure 5 shown, the network access device 500 includes:

[0383] A fifth receiving module 501, configured to receive first information sent by a terminal device, where the first information is used to indicate access request related information;

[0384] A determining module 502, configured to determine a first feedback message according to the first information, where the first feedback message carries access resource related information;

[0385] A fourth sending module 503, configured to send the first feedback message to the terminal device.

[0386] Optionally, the access request related information includes at least one of the following: the service requested by the terminal device, the frequency band that the terminal device expects to access, and the cell that the terminal device expects to access.

[0387] Optionally, the access resource related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, and cell registration information.

[0388] Optionally, the cell access resource information includes at least one of the access resource information of the first cell and the access resource information of the second cell, where the first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0389] Optionally, the determination module 502 is configured to determine the cell access resource information or the first uplink scheduling resource information according to the first information;

[0390] The fourth sending module 503 is configured to send a first feedback message carrying the cell access resource information or the first uplink scheduling resource information to the terminal device;

[0391] Alternatively, the determination module 502 is configured to determine the cell access resource information according to the first information;

[0392] The fourth sending module 503 is configured to initiate an access registration for the terminal device to the cell corresponding to the cell access resource information, and send a first feedback message carrying cell registration information to the terminal device, where the cell registration information is the registration information of the cell corresponding to the cell access resource information.

[0393] Optionally, when the first uplink scheduling resource information is carried in the first feedback message, the network access device 500 further includes:

[0394] The sixth receiving module is configured to receive a resource acquisition request sent by the terminal device based on the first uplink scheduling resource information;

[0395] The fifth sending module is configured to, in response to the resource acquisition request, send cell access resource information including the access resource information of the second cell to the terminal device.

[0396] Optionally, the first information is carried in MSG1, MSG3 or MSG5.

[0397] Optionally, the first information is indicated by a preconfigured preamble and RACH resource in MSG1;

[0398] Alternatively, the first information is indicated by a specified field in MSG3, where the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0399] Alternatively, the first information is carried in the terminal capability and / or scheduling request SR in MSG5.

[0400] Optionally, the network access device 500 further includes:

[0401] The seventh receiving module is configured to receive second information sent by the terminal device, where the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, and / or the terminal device supports accessing multiple cells.

[0402] Optionally, when the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, the network access device 500 further includes:

[0403] A sixth sending module, configured to send second uplink scheduling resource information to the terminal device based on the second information, where the second uplink scheduling resource information includes at least one of scheduling information of MSG3 and uplink scheduling resources;

[0404] A fifth receiving module 501 is configured to receive the first information sent by the terminal device based on the second uplink scheduling resource information.

[0405] Optionally, the network access device 500 further includes:

[0406] A seventh sending module, configured to send third information to the terminal device, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports cooperative work.

[0407] Optionally, the first information includes the service requested by the terminal device;

[0408] When the first cell supports the service, the first feedback message is sent through RAR or MSG4, and the access resource related information at least includes the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station;

[0409] When the first cell does not support the service, the first feedback message is sent through RAR, MSG4 or a first downlink message, and the access resource related information includes at least one of the access resource information of a second cell, first uplink scheduling resource information, and cell registration information. The second cell is another cell outside the first cell, and the cell registration information is the registration information in the second cell.

[0410] Optionally, when the first cell does not support the service, the access resource related information includes at least one of the following information:

[0411] Cell information supporting the service;

[0412] Frequency point information supporting the service;

[0413] Dedicated identifier or neighbor cell access resources;

[0414] The first uplink scheduling resource information includes at least one of the following:

[0415] Scheduling information of uplink messages;

[0416] Uplink scheduling resources;

[0417] A first indication bit, used to indicate that the terminal device continues to receive uplink scheduling resources;

[0418] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0419] Cell registration information.

[0420] Optionally, the first information includes a frequency band to be accessed and / or a cell to be accessed;

[0421] The access resource related information includes at least one of the following information:

[0422] Accessible cell information;

[0423] Accessible frequency band information;

[0424] Scheduling information of uplink messages;

[0425] An indication of whether the cell to be accessed is active;

[0426] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0427] Cell registration information.

[0428] The network access device 500 provided in the embodiment of the present application can execute Figure 3 the method embodiment shown, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0429] The network access device 500 in the embodiment of the present application receives first information sent by a terminal device, where the first information is used to indicate access request related information; according to the first information, a first feedback message is determined, where the first feedback message carries access resource related information; and the first feedback message is sent to the terminal device. In this way, when the terminal device initially accesses the network, it reports relevant indication information to the base station, so that the base station can provide corresponding access resource related information for the terminal device according to the indication information, thereby avoiding re - directing to other cells for access after the RRC establishment of the terminal device is completed, that is, avoiding the useless operations in the early stage of establishing a connection between the UE and the network side in the related art, and saving signaling interaction resources.

[0430] Please refer to Figure 6 , the embodiment of the present application also provides a terminal device, including a transceiver 601 and a processor 602, where,

[0431] The transceiver 601 is used to send a first piece of information to the base station when the terminal device is about to initially access the network, and the first piece of information is used to indicate access request-related information;

[0432] The transceiver 601 is further used to receive a first feedback message sent by the base station, where the first feedback message is determined based on the first piece of information, and the first feedback message carries access resource-related information.

[0433] Optionally, the access request-related information includes at least one of the following: the service requested by the terminal device, the frequency band that the terminal device expects to access, and the cell that the terminal device expects to access.

[0434] Optionally, the access resource-related information includes at least one of the following pieces of information: cell access resource information, first uplink scheduling resource information, and cell registration information.

[0435] Optionally, the access resource-related information includes cell access resource information, and the cell access resource information includes at least one of the access resource information of the first cell and the access resource information of the second cell. The first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0436] Optionally, the processor 602 is used to perform network access based on the cell access resource information;

[0437] Or,

[0438] The access resource-related information includes first uplink scheduling resource information, and the transceiver 601 is further used to send a resource acquisition request to the base station based on the first uplink scheduling resource information;

[0439] The transceiver 601 is further used to receive cell access resource information including the access resource information of a second cell, where the second cell is other cells outside the serving cell corresponding to the base station;

[0440] The processor 602 is further used to perform network access based on the cell access resource information.

[0441] Optionally, the first piece of information is carried in message MSG1, MSG3, or MSG5.

[0442] Optionally, the first piece of information is indicated by a preconfigured preamble and / or random access channel RACH resource in MSG1;

[0443] Or, the first piece of information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0444] Alternatively, the first information is carried in the terminal capability information in MSG5 and / or the scheduling request SR.

[0445] Optionally, the transceiver 601 is further configured to send second information to the base station, where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device and / or to indicate that the terminal device supports access in multiple cells;

[0446] When the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, the transceiver 601 is further configured to receive second uplink scheduling resource information sent by the base station, where the second uplink scheduling resource information includes at least one of the scheduling information of MSG3 and the uplink scheduling resources;

[0447] The transceiver 601 is further configured to send the first information to the base station based on the second uplink scheduling resource information.

[0448] Optionally, the transceiver 601 is further configured to receive third information sent by the base station, where the third information includes service information supported by different cells or frequency points and / or the third information is used to indicate that the base station supports cooperative work;

[0449] The transceiver 601 is further configured to send the first information to the base station based on the third information.

[0450] Optionally, the first information includes the service requested by the terminal device;

[0451] When the first cell supports the service, the first feedback message is sent through the random access response RAR or MSG4, and the access resource related information at least includes the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station;

[0452] When the first cell does not support the service, the first feedback message is sent through the RAR, MSG4 or the first downlink message, and the access resource related information includes at least one of the access resource information of the second cell, the first uplink scheduling resource information and the cell registration information. The second cell is other cells outside the first cell, and the cell registration information is the registration information in the second cell.

[0453] Optionally, when the first cell does not support the service, the access resource related information includes at least one of the following information:

[0454] Cell information supporting the service;

[0455] Frequency point information supporting the service;

[0456] Dedicated identifier or neighbor cell access resource;

[0457] Scheduling information of the uplink message;

[0458] Uplink scheduling resource;

[0459] The first indication bit, used to indicate that the terminal device continues to receive the uplink scheduling resource;

[0460] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0461] Cell registration information.

[0462] Optionally, the first information includes the frequency band expected to be accessed and / or the cell expected to be accessed;

[0463] The access resource related information includes at least one of the following:

[0464] Accessible cell information;

[0465] Accessible frequency band information;

[0466] Scheduling information of the uplink message;

[0467] Indication of whether the cell expected to be accessed is active;

[0468] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0469] Cell registration information.

[0470] Optionally, the processor 602 is further used for at least one of the following:

[0471] In the case that the cell access resource information only includes the access resource information of the first cell, access the first cell based on the access resource information of the first cell;

[0472] In the case that the cell access resource information only includes the access resource information of the second cell, terminate accessing the first cell and access the second cell based on the access resource information of the second cell;

[0473] In the case that the cell access resource information includes the access resource information of the first cell and the access resource information of the second cell, access the first cell and the second cell respectively based on the access resource information of the first cell and the access resource information of the second cell.

[0474] Optionally, the cell access resource information only includes the access resource information of the second cell;

[0475] The transceiver 601 is further configured to initiate an access request to the second cell, where the access request carries fourth information for indicating that the access request is initiated based on an indication from a cell outside the second cell.

[0476] The terminal device provided in the embodiments of the present application can execute Figure 3 the method embodiments shown. The implementation principles and technical effects are similar, and will not be elaborated here.

[0477] Please refer to Figure 7 , the embodiments of the present application also provide a base station, including a transceiver 701 and a processor 702, where

[0478] the transceiver 701 is configured to receive first information sent by a terminal device, where the first information is used to indicate access request related information;

[0479] the processor 702 is configured to determine a first feedback message according to the first information, where the first feedback message carries access resource related information;

[0480] the transceiver 701 is further configured to send the first feedback message to the terminal device.

[0481] Optionally, the access request related information includes at least one of the following: the service requested by the terminal device, the frequency band that the terminal device expects to access, and the cell that the terminal device expects to access.

[0482] Optionally, the access resource related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, and cell registration information.

[0483] Optionally, the cell access resource information includes at least one of the access resource information of the first cell and the access resource information of the second cell. The first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0484] Optionally, the processor 702 is further configured to determine the cell access resource information or the first uplink scheduling resource information according to the first information;

[0485] the transceiver 701 is further configured to send a first feedback message carrying the cell access resource information or the first uplink scheduling resource information to the terminal device;

[0486] Alternatively, the processor 702 is further configured to determine the cell access resource information according to the first information;

[0487] The transceiver 701 is further configured to initiate an access registration for the terminal device to the cell corresponding to the cell access resource information, and send a first feedback message carrying the cell registration information to the terminal device, where the cell registration information is the registration information of the cell corresponding to the cell access resource information.

[0488] Optionally, when the first uplink scheduling resource information is carried in the first feedback message, the transceiver 701 is further configured to receive a resource acquisition request sent by the terminal device based on the first uplink scheduling resource information;

[0489] The transceiver 701 is further configured to, in response to the resource acquisition request, send cell access resource information including the access resource information of the second cell to the terminal device.

[0490] Optionally, the first information is carried in MSG1, MSG3, or MSG5.

[0491] Optionally, the first information is indicated by a preconfigured preamble and RACH resource in MSG1;

[0492] Alternatively, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0493] Alternatively, the first information is carried in the terminal capability and / or scheduling request SR in MSG5.

[0494] Optionally, the transceiver 701 is further configured to receive a second information sent by the terminal device, where the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, and / or the terminal device supports accessing multiple cells.

[0495] Optionally, when the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, the transceiver 701 is further configured to, based on the second information, send second uplink scheduling resource information to the terminal device, where the second uplink scheduling resource information includes at least one of the scheduling information of MSG3 and the uplink scheduling resources;

[0496] The transceiver 701 is further configured to receive the first information sent by the terminal device based on the second uplink scheduling resource information.

[0497] Optionally, the transceiver 701 is further configured to send third information to the terminal device, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports cooperative work.

[0498] Optionally, the first information includes the service requested by the terminal device;

[0499] When the service is supported in the first cell, the first feedback message is sent via RAR or MSG4, and the access resource related information at least includes the access resource information of the first cell, where the first cell is the serving cell corresponding to the base station;

[0500] When the service is not supported in the first cell, the first feedback message is sent via RAR, MSG4, or the first downlink message, and the access resource related information includes at least one of the access resource information of the second cell, the first uplink scheduling resource information, and the cell registration information. The second cell is another cell outside the first cell, and the cell registration information is the registration information in the second cell.

[0501] Optionally, when the service is not supported in the first cell, the access resource related information includes at least one of the following information:

[0502] Cell information supporting the service;

[0503] Frequency point information supporting the service;

[0504] Dedicated identifier or access resources of neighboring cells;

[0505] The first uplink scheduling resource information includes at least one of the following:

[0506] Scheduling information of the uplink message;

[0507] Uplink scheduling resources;

[0508] A first indication bit for indicating that the terminal device continues to receive uplink scheduling resources;

[0509] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0510] Cell registration information.

[0511] Optionally, the first information includes the frequency point expected to be accessed and / or the cell expected to be accessed;

[0512] The access resource related information includes at least one of the following information:

[0513] Accessible cell information;

[0514] Accessible frequency point information;

[0515] Scheduling information of the uplink message;

[0516] An indication of whether the cell expected to be accessed is active;

[0517] Access indication information, which is used to indicate whether the terminal device accesses in the first cell and other cells;

[0518] Cell registration information.

[0519] The base station provided by the embodiment of the present application can execute Figure 4 The method embodiment shown, the implementation principle and technical effect are similar, and will not be elaborated here in this embodiment.

[0520] The embodiment of the present application also provides a terminal device. Since the principle of the terminal device to solve the problem is similar to the network access method in the embodiment of the present application, the implementation of the terminal device can refer to the implementation of the method, and the repeated parts will not be elaborated.

[0521] As Figure 8 shown, the terminal device of the embodiment of the present application includes:

[0522] A processor 800, configured to read a program in a memory 820 and execute the following processes:

[0523] When the terminal device initially accesses the network, send a first piece of information to the base station through a transceiver 810, where the first piece of information is used to indicate access request-related information;

[0524] Receive a first feedback message sent by the base station through the transceiver 810, where the first feedback message is determined based on the first piece of information, and the first feedback message carries access resource-related information.

[0525] A transceiver 810, configured to receive and send data under the control of the processor 800.

[0526] Among them, in Figure 8 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits of one or more processors represented by the processor 800 and a memory represented by the memory 820 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, and therefore will not be further described herein. The bus interface provides an interface. The transceiver 810 may be multiple elements, that is, including a transmitter and a transceiver, and provides a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface 830 may also be an interface capable of externally connecting and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, etc. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 800 when executing operations.

[0527] Optionally, the access request related information includes at least one of the following: the service requested by the terminal device, the frequency band that the terminal device expects to access, and the cell that the terminal device expects to access.

[0528] Optionally, the access resource related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, and cell registration information.

[0529] Optionally, the processor 800 is further configured to read a program in the memory 820 and execute the following steps:

[0530] The access resource related information includes cell access resource information, and the cell access resource information includes at least one of the access resource information of the first cell and the access resource information of the second cell. The first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0531] Optionally, the processor 800 is further configured to read a program in the memory 820 and execute the following steps:

[0532] Perform network access based on the cell access resource information;

[0533] Alternatively, the access resource related information includes first uplink scheduling resource information, and the processor 800 is further configured to read a program in the memory 820 and execute the following steps:

[0534] Send a resource acquisition request to the base station through the transceiver 810 based on the first uplink scheduling resource information;

[0535] Receive, through the transceiver 810, cell access resource information including the access resource information of the second cell sent by the base station, where the second cell is other cells outside the serving cell corresponding to the base station;

[0536] Perform network access based on the cell access resource information.

[0537] Optionally, the first information is carried in the message MSG1, MSG3, or MSG5.

[0538] Optionally, the first information is indicated by a preconfigured preamble and / or random access channel RACH resource in MSG1;

[0539] Alternatively, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0540] Alternatively, the first information is carried in the terminal capability information and / or the scheduling request (SR) in MSG5.

[0541] Optionally, the processor 800 is further configured to read the program in the memory 820 and perform the following steps:

[0542] Send second information to the base station via the transceiver 810, where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device and / or is used to indicate that the terminal device supports access in multiple cells;

[0543] In the case where the second information is used to instruct the base station to allocate uplink scheduling resources for the terminal device, the processor 800 is further configured to read the program in the memory 820 and perform the following steps:

[0544] Receive second uplink scheduling resource information sent by the base station via the transceiver 810, where the second uplink scheduling resource information includes at least one of the scheduling information of MSG3 and the uplink scheduling resources;

[0545] Based on the second uplink scheduling resource information, send the first information to the base station via the transceiver 810.

[0546] Optionally, the processor 800 is further configured to read the program in the memory 820 and perform the following steps:

[0547] Receive third information sent by the base station via the transceiver 810, where the third information includes service information supported by different cells or frequency points and / or the third information is used to indicate that the base station supports cooperative work;

[0548] Based on the third information, send the first information to the base station via the transceiver 810.

[0549] Optionally, the first information includes the service requested by the terminal device;

[0550] In the case where the first cell supports the service, the first feedback message is sent via a random access response (RAR) or MSG4, and the access resource related information includes at least the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station;

[0551] In the case where the first cell does not support the service, the first feedback message is sent via RAR, MSG4 or a first downlink message, and the access resource related information includes at least one of the access resource information of a second cell, the first uplink scheduling resource information and the cell registration information, the second cell is another cell outside the first cell, and the cell registration information is the registration information in the second cell.

[0552] Optionally, when the first cell does not support the service, the access resource related information includes at least one of the following items of information:

[0553] Cell information that supports the service;

[0554] Frequency point information that supports the service;

[0555] Dedicated identifier or neighbor cell access resources;

[0556] Scheduling information of the uplink message;

[0557] Uplink scheduling resources;

[0558] A first indication bit, used to indicate that the terminal device continues to receive uplink scheduling resources;

[0559] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0560] Cell registration information.

[0561] Optionally, the first information includes the frequency point expected to be accessed and / or the cell expected to be accessed;

[0562] The access resource related information includes at least one of the following:

[0563] Accessible cell information;

[0564] Accessible frequency point information;

[0565] Scheduling information of the uplink message;

[0566] An indication of whether the cell expected to be accessed is active;

[0567] Access indication information, used to indicate whether the terminal device accesses in the first cell and other cells;

[0568] Cell registration information.

[0569] Optionally, the processor 800 is further configured to read the program in the memory 820 and execute at least one of the following:

[0570] When the cell access resource information only includes the access resource information of the first cell, access the first cell based on the access resource information of the first cell;

[0571] When the cell access resource information only includes the access resource information of the second cell, terminate accessing the first cell and access the second cell based on the access resource information of the second cell;

[0572] When the cell access resource information includes the access resource information of the first cell and the access resource information of the second cell, access the first cell and the second cell respectively based on the access resource information of the first cell and the access resource information of the second cell.

[0573] Optionally, the cell access resource information only includes the access resource information of the second cell;

[0574] The processor 800 is further configured to read the program in the memory 820 and execute the following steps:

[0575] Send an access request to the second cell through the transceiver 810, where the access request carries fourth information, and the fourth information is used to indicate that the access request is initiated based on the indication of a cell outside the second cell.

[0576] The terminal device provided by the embodiment of the present application can execute Figure 2 The method embodiment shown, the implementation principle and technical effect are similar, and will not be elaborated here in this embodiment.

[0577] The embodiment of the present application further provides a base station. Since the principle of the base station to solve the problem is similar to the network access method in the embodiment of the present application, the implementation of the base station can refer to the implementation of the method, and the repeated parts will not be elaborated. As Figure 9 As shown, the base station of the embodiment of the present application includes:

[0578] A processor 900, configured to read the program in the memory 920 and execute the following processes:

[0579] Receive first information sent by the terminal device through the transceiver 910, where the first information is used to indicate access request related information;

[0580] Determine a first feedback message according to the first information, where the first feedback message carries access resource related information;

[0581] Send the first feedback message to the terminal device through the transceiver 910.

[0582] The transceiver 910 is configured to receive and send data under the control of the processor 900.

[0583] Wherein, in Figure 9Among them, the bus architecture may include any number of interconnected buses and bridges, specifically, various circuits represented by one or more processors represented by processor 900 and a memory represented by memory 920 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art, and thus will not be further described herein. The bus interface provides an interface. The transceiver 910 may be a plurality of components, that is, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 when performing operations.

[0584] Optionally, the cell access resource information includes at least one of the access resource information of a first cell and the access resource information of a second cell, the first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

[0585] Optionally, the processor 900 is further configured to read from the memory 920 and perform the following steps:

[0586] Determine the cell access resource information or the first uplink scheduling resource information according to the first information;

[0587] Send a first feedback message carrying the cell access resource information or the first uplink scheduling resource information to the terminal device through the transceiver 910;

[0588] Alternatively, the processor 900 is further configured to read from the memory 920 and perform the following steps:

[0589] Determine the cell access resource information according to the first information;

[0590] Initiate access registration for the terminal device to the cell corresponding to the cell access resource information, and send a first feedback message carrying cell registration information to the terminal device through the transceiver 910, where the cell registration information is the registration information of the cell corresponding to the cell access resource information.

[0591] Optionally, when the first uplink scheduling resource information is carried in the first feedback message, the processor 900 is further configured to read from the memory 920 and perform the following steps:

[0592] Receive a resource acquisition request sent by the terminal device based on the first uplink scheduling resource information through the transceiver 910;

[0593] In response to the resource acquisition request, the cell access resource information including the access resource information of the second cell is sent to the terminal device through the transceiver 910.

[0594] Optionally, the first information is carried in MSG1, MSG3 or MSG5.

[0595] Optionally, the first information is indicated by a preconfigured preamble and RACH resources in MSG1;

[0596] Alternatively, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence;

[0597] Alternatively, the first information is carried in the terminal capability and / or scheduling request SR in MSG5.

[0598] Optionally, the processor 900 is further configured to read from the memory 920 and perform the following steps:

[0599] Receive second information sent by the terminal device through the transceiver 910, where the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, and / or the terminal device supports accessing in multiple cells.

[0600] Optionally, when the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, the processor 900 is further configured to read from the memory 920 and perform the following steps:

[0601] Based on the second information, send second uplink scheduling resource information to the terminal device through the transceiver 910, where the second uplink scheduling resource information includes at least one of the scheduling information of MSG3 and uplink scheduling resources;

[0602] Receive the first information sent by the terminal device based on the second uplink scheduling resource information through the transceiver 910.

[0603] Optionally, the processor 900 is further configured to read from the memory 920 and perform the following steps:

[0604] Send third information to the terminal device through the transceiver 910, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports collaborative work.

[0605] Optionally, the first information includes the service requested by the terminal device;

[0606] When the first cell supports the service, the first feedback message is sent via RAR or MSG4, and the access resource related information at least includes the access resource information of the first cell, where the first cell is the serving cell corresponding to the base station;

[0607] When the first cell does not support the service, the first feedback message is sent via RAR, MSG4 or a first downlink message, and the access resource related information includes at least one of the access resource information of a second cell, the first uplink scheduling resource information, and the cell registration information. The second cell is another cell outside the first cell, and the cell registration information is the registration information in the second cell.

[0608] Optionally, when the first cell does not support the service, the access resource related information includes at least one of the following information:

[0609] Cell information supporting the service;

[0610] Frequency point information supporting the service;

[0611] Dedicated identifier or neighbor cell access resource;

[0612] The first uplink scheduling resource information includes at least one of the following:

[0613] Scheduling information of the uplink message;

[0614] Uplink scheduling resource;

[0615] A first indication bit for indicating that the terminal device continues to receive uplink scheduling resources;

[0616] Access indication information for indicating whether the terminal device accesses in the first cell and other cells;

[0617] Cell registration information.

[0618] Optionally, the first information includes the frequency point and / or the cell that the terminal device expects to access;

[0619] The access resource related information includes at least one of the following information:

[0620] Accessible cell information;

[0621] Accessible frequency point information;

[0622] Scheduling information of the uplink message;

[0623] An indication of whether the cell that the terminal device expects to access is active;

[0624] Access indication information, which is used to indicate whether the terminal device accesses in the first cell and other cells;

[0625] Cell registration information.

[0626] The base station provided by the embodiments of the present application can execute Figure 3 the method embodiments shown. The implementation principles and technical effects are similar, and will not be elaborated here in this embodiment.

[0627] In addition, the computer-readable storage medium of the embodiments of the present application is used to store a computer program, and the computer program can be executed by a processor to implement Figure 2 or Figure 3 each step in the method embodiments shown.

[0628] In several embodiments provided by the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical or other forms.

[0629] In addition, each functional unit in the various embodiments of the present application can be integrated in a processing unit, or each unit can be physically included separately, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of a combination of hardware and software functional units.

[0630] The above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium. The above-mentioned software functional units are stored in a storage medium, including several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute some steps of the transceiver methods in the various embodiments of the present application. The foregoing storage medium includes: various media such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc that can store program codes.

[0631] The above are the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A network access method, which is executed by a terminal device, characterized in that The method includes: When the terminal device is about to initially access the network for the first time, sending a first piece of information to the base station, where the first piece of information is used to indicate access request-related information; Receiving a first feedback message sent by the base station, where the first feedback message is determined based on the first piece of information, and the first feedback message carries access resource-related information.

2. The method according to claim 1, wherein The access request-related information includes at least one of the following: the service requested by the terminal device, the frequency band the terminal device expects to access, and the cell the terminal device expects to access.

3. The method according to claim 1, wherein The access resource-related information includes at least one of the following pieces of information: cell access resource information, first uplink scheduling resource information, and cell registration information.

4. The method according to claim 1, characterized in that, The access resource-related information includes cell access resource information, and the cell access resource information includes at least one of the access resource information of a first cell and the access resource information of a second cell. The first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

5. The method according to claim 4, characterized in that The method further includes: Based on the cell access resource information, performing network access; Alternatively, the access resource-related information includes first uplink scheduling resource information, and the method further includes: Based on the first uplink scheduling resource information, sending a resource acquisition request to the base station; Receiving cell access resource information including the access resource information of a second cell sent by the base station, where the second cell is other cells outside the serving cell corresponding to the base station; Based on the cell access resource information, performing network access.

6. The method according to any one of claims 1 to 5, characterized in that, The first piece of information is carried in message MSG1, MSG3, or MSG5.

7. The method according to claim 6, wherein The first piece of information is indicated by a preconfigured preamble and / or random access channel RACH resource in MSG1; Alternatively, the first piece of information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence; Alternatively, the first piece of information is carried in the terminal capability information and / or scheduling request SR in MSG5.

8. The method according to claim 1, characterized in that Before sending the first piece of information to the base station, the method further includes: Sending a second piece of information to the base station, where the second piece of information is used to indicate that the base station allocates uplink scheduling resources for the terminal device and / or is used to indicate that the terminal device supports accessing multiple cells; When the second piece of information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, the method further includes: Receiving second uplink scheduling resource information sent by the base station, where the second uplink scheduling resource information includes at least one of the scheduling information of MSG3 and uplink scheduling resources; Sending the first piece of information to the base station includes: Based on the second uplink scheduling resource information, sending the first piece of information to the base station.

9. The method according to claim 1, characterized in that Before sending the first piece of information to the base station, the method further includes: Receiving a third piece of information sent by the base station, where the third piece of information includes service information supported by different cells or frequency bands and / or the third piece of information is used to indicate that the base station supports collaborative work; Sending the first piece of information to the base station includes: Send the first information to the base station based on the third information.

10. The method according to any one of claims 1 to 5, characterized in that The first information includes the service requested by the terminal device; When the first cell supports the service, the first feedback message is sent via a Random Access Response (RAR) or MSG4. The access resource related information includes at least the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station; When the first cell does not support the service, the first feedback message is sent via RAR, MSG4, or a first downlink message. The access resource related information includes at least one of the access resource information of a second cell, the first uplink scheduling resource information, and the cell registration information. The second cell is a cell other than the first cell, and the cell registration information is the registration information in the second cell.

11. The method according to claim 10, characterized in that, When the first cell does not support the service, the access resource related information includes at least one of the following: Cell information supporting the service; Frequency point information supporting the service; Dedicated identifier or neighbor cell access resource; Scheduling information of the uplink message; Uplink scheduling resource; A first indication bit for indicating that the terminal device continues to receive the uplink scheduling resource; Access indication information for indicating whether the terminal device accesses in the first cell and other cells; Cell registration information.

12. The method according to any one of claims 1 to 5, characterized in that The first information includes the expected access frequency point and / or the expected access cell; The access resource related information includes at least one of the following: Accessible cell information; Accessible frequency point information; Scheduling information of the uplink message; An indication of whether the expected access cell is active; Access indication information for indicating whether the terminal device accesses in the first cell and other cells, where the first cell is the serving cell corresponding to the base station; Cell registration information.

13. The method according to claim 5, characterized in that, The network access based on the cell access resource information includes at least one of the following: When the cell access resource information only includes the access resource information of the first cell, access the first cell based on the access resource information of the first cell; When the cell access resource information only includes the access resource information of the second cell, terminate the access to the first cell and access the second cell based on the access resource information of the second cell; When the cell access resource information includes the access resource information of the first cell and the access resource information of the second cell, access the first cell and the second cell respectively based on the access resource information of the first cell and the access resource information of the second cell.

14. The method according to claim 5, characterized in that, The cell access resource information only includes the access resource information of the second cell; The network access based on the cell access resource information includes: Initiate an access request to the second cell, where the access request carries fourth information, and the fourth information is used to indicate that the access request is initiated based on an indication from a cell other than the second cell.

15. A network access method, which is executed by a base station, characterized in that, The method includes: Receive the first information sent by the terminal device, where the first information is used to indicate access request related information; Determine a first feedback message according to the first information, where the first feedback message carries access resource related information; Send the first feedback message to the terminal device.

16. The method according to claim 15, wherein The access request related information includes at least one of the following: the service requested by the terminal device, the frequency band that the terminal device expects to access, and the cell that the terminal device expects to access.

17. The method according to claim 15, characterized in that, The access resource related information includes at least one of the following information: cell access resource information, first uplink scheduling resource information, and cell registration information.

18. The method according to claim 17, characterized in that The cell access resource information includes at least one of the access resource information of the first cell and the access resource information of the second cell, where the first cell is the serving cell corresponding to the base station, and the second cell is other cells outside the first cell.

19. The method according to claim 18, characterized in that, The determining the first feedback message according to the first information includes: Determine the cell access resource information or the first uplink scheduling resource information according to the first information; The sending the first feedback message to the terminal device includes: Send a first feedback message carrying the cell access resource information or the first uplink scheduling resource information to the terminal device; Or, the determining the first feedback message according to the first information includes: Determine the cell access resource information according to the first information; The sending the first feedback message to the terminal device includes: Initiate access registration for the terminal device to the cell corresponding to the cell access resource information, and send a first feedback message carrying the cell registration information to the terminal device, where the cell registration information is the registration information of the cell corresponding to the cell access resource information.

20. The method according to claim 19, wherein When the first uplink scheduling resource information is carried in the first feedback message, after sending the first feedback message to the terminal device, the method further includes: Receive a resource acquisition request sent by the terminal device based on the first uplink scheduling resource information; In response to the resource acquisition request, send cell access resource information including the access resource information of the second cell to the terminal device.

21. The method according to any one of claims 15 to 20, characterized in that, The first information is carried in MSG1, MSG3 or MSG5.

22. The method according to claim 21, wherein The first information is indicated by a preconfigured preamble and RACH resource in MSG1; Or, the first information is indicated by a specified field in MSG3, and the specified field includes at least one of a specified logical channel identifier LCID and a specified bit or bit sequence; Or, the first information is carried in the terminal capability and / or scheduling request SR in MSG5.

23. The method according to claim 15, wherein Before receiving the first information sent by the terminal device, the method further includes: Receive second information sent by the terminal device, where the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device and / or the terminal device supports accessing multiple cells.

24. The method according to claim 23, wherein When the second information is used to indicate that the base station allocates uplink scheduling resources for the terminal device, the method further includes: Based on the second information, send second uplink scheduling resource information to the terminal device, where the second uplink scheduling resource information includes at least one of scheduling information of MSG3 and uplink scheduling resources; Receiving the first information sent by the terminal device includes: Receiving the first information sent by the terminal device based on the second uplink scheduling resource information.

25. The method according to claim 15, characterized in that, Before receiving the first information sent by the terminal device, the method further includes: Sending third information to the terminal device, where the third information includes service information supported by different cells or frequency points, and / or the third information is used to indicate that the base station supports cooperative work.

26. The method according to any one of claims 15 to 19, characterized in that The first information includes the service requested by the terminal device; When the first cell supports the service, the first feedback message is sent through RAR or MSG4, and the access resource related information includes at least the access resource information of the first cell, and the first cell is the serving cell corresponding to the base station; When the first cell does not support the service, the first feedback message is sent through RAR, MSG4 or a first downlink message, and the access resource related information includes at least one of the access resource information of a second cell, first uplink scheduling resource information, and cell registration information. The second cell is another cell outside the first cell, and the cell registration information is the registration information in the second cell.

27. The method according to claim 26, wherein When the first cell does not support the service, the access resource related information includes at least one of the following information: Cell information supporting the service; Frequency point information supporting the service; Dedicated identifier or neighbor cell access resource; The first uplink scheduling resource information includes at least one of the following: Scheduling information of the uplink message; Uplink scheduling resource; A first indication bit for indicating that the terminal device continues to receive uplink scheduling resources; Access indication information for indicating whether the terminal device accesses in the first cell and other cells; Cell registration information.

28. The method according to any one of claims 15 to 19, characterized in that, The first information includes the frequency point and / or cell expected to be accessed; The access resource related information includes at least one of the following information: Accessible cell information; Accessible frequency point information; Scheduling information of the uplink message; An indication of whether the cell expected to be accessed is active; Access indication information for indicating whether the terminal device accesses in the first cell and other cells, and the first cell is the serving cell corresponding to the base station; Cell registration information.

29. A network access device is provided in a terminal device, characterized in that, The network access device includes: A first sending module, configured to send first information to a base station when the terminal device pre-initially accesses the network, where the first information is used to indicate access request related information; A first receiving module, configured to receive a first feedback message sent by the base station, where the first feedback message is determined based on the first information, and the access resource related information is carried in the first feedback message.

30. A network access device is provided at a base station, characterized in that, The network access device includes: A fifth receiving module, configured to receive first information sent by a terminal device, where the first information is used to indicate access request related information; A determination module, configured to determine a first feedback message according to the first information, where the first feedback message carries access resource related information; A fourth sending module, configured to send the first feedback message to the terminal device.

31. A terminal device, characterized in that, Comprising a transceiver and a processor, where The transceiver is configured to send first information to a base station when the terminal device pre-initially accesses the network, and the first information is used to indicate access request related information; The transceiver is further configured to receive the first feedback message sent by the base station, where the first feedback message is determined based on the first information, and the first feedback message carries access resource related information.

32. A base station, characterized in that, Comprising a transceiver and a processor, where The transceiver is configured to receive the first information sent by the terminal device, where the first information is used to indicate access request related information; The processor is configured to determine a first feedback message according to the first information, where the first feedback message carries access resource related information; The transceiver is further configured to send the first feedback message to the terminal device.

33. A terminal device, comprising: A transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; characterized in that the processor is configured to read the program in the memory to implement the steps in the network access method according to any one of claims 1 to 14.

34. A base station, comprising: A transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; characterized in that the processor is configured to read the program in the memory to implement the steps in the network access method according to any one of claims 15 to 28.

35. A computer-readable storage medium for storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps in the network access method according to any one of claims 1 to 14; or implements the steps in the network access method according to any one of claims 15 to 28.

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