CN108934006B - Network access method, device, user equipment and base station - Google Patents

Network access method, device, user equipment and base station Download PDF

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Publication number
CN108934006B
CN108934006B CN201710372613.1A CN201710372613A CN108934006B CN 108934006 B CN108934006 B CN 108934006B CN 201710372613 A CN201710372613 A CN 201710372613A CN 108934006 B CN108934006 B CN 108934006B
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network
list
mns
candidate
access request
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CN108934006A (en
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萨穆利·海基宁
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A network access method, a device, user equipment and a base station are provided, the network access method comprises the steps of searching a plurality of available P L MNs when a home P L MN and a registered P L MN are unavailable, selecting a first P L MN from the plurality of searched P L MNs for residence, sending a first access request aiming at the first P L MN to a network side, and sending a candidate network list to the network side, wherein the candidate network list comprises the plurality of P L MN., and the technical scheme of the invention can optimize a network access process and improve access efficiency when the HP L MN/RP L MN is unavailable.

Description

Network access method, device, user equipment and base station
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a network access method, an apparatus, a user equipment, and a base station.
Background
When a User Equipment (UE) is in an automatic Network selection mode, if a Home Public land Mobile Network (Home Public L and Mobile Network, HP L MN)/registered Public land Mobile Network (registered Public L and Mobile Network, RP L MN) is not available, it is required to search/select a P L MN based on a priority order between available Public land Mobile networks (Public L and Mobile Network, P L MN).
In the prior art, P L MN. can be selected according to a priority list defined on a Universal Subscriber Identity Module (USIM). fig. 1 is a network selection flow chart in the prior art, as shown in fig. 1, in step [1], the UE is in an automatic network selection mode, and P L MN. can be selected autonomously according to the definition of the communication protocol TS 23.122. in step [2], the first P L MN is selected, and an access request is sent after residing in the P L mn.in step [3], the network rejects the access procedure in step [4], in the above case, the next P L MN. in the priority list needs to be selected in step [5], the next P L MN is selected, and an access request is sent after residing in the P L mn.in step [6], the network rejects the access procedure in step [7], in the above case, the next P L MN. needs to be selected, and so on until the registration of the next P L MN., or no P L can be selected.
In addition, the priority list in the USIM cannot be updated in time, which results in unnecessary access attempts to the network by the UE, and even when the access request is accepted, the selected P L MN is not necessarily the optimal roaming network, which brings extra overhead to the user and reduces the user experience.
Disclosure of Invention
The invention solves the technical problem of how to optimize the network access process and improve the access efficiency when HP L MN/RP L MN is unavailable.
In order to solve the technical problem, an embodiment of the present invention provides a network access method, where the network access method includes searching a plurality of available P L MNs when a home P L MN and a registered P L MN are unavailable, selecting a first P L MN from the plurality of searched P L MNs to camp on, and sending a first access request for the first P L MN to a network side, and sending a candidate network list to the network side, where the candidate network list includes the plurality of P L MNs.
Optionally, the selecting a first P L MN to camp on among the searched P L MNs includes determining the first P L MN according to the order recorded in the priority list and camping if at least one P L MN among the P L MNs is consistent with a P L MN in the priority list.
Optionally, the candidate network list is carried in the first access request.
Optionally, if all P L MNs in the candidate network list are forbidden P L MNs, the network side sends indication information to indicate that all P L MNs are forbidden P L MNs.
Optionally, the network access method further includes selecting a second P L MN indicated by the network side for camping if the network side rejects the first access request, the second P L MN being selected and determined by the network side from the candidate list, and sending a second access request for the second P L MN to the network side.
Optionally, the second P L MN is selected by the network side in the candidate network list.
Optionally, the network access method further includes, if the network side rejects the second access request, continuing to select a next P L MN for camping according to the indication of the network side, and sending an access request for the next P L MN until the network side accepts the access request.
Optionally, the network side adds the P L MN refusing access to the refusal network list, and the next P L MN is selected from the candidate network list and does not belong to the refusal network list.
Optionally, the network side groups the plurality of P L MNs to a home P L MN.
Optionally, the sending the candidate network list to the network side includes: and carrying the candidate network list in NAS information or RRC information for sending.
In order to solve the technical problem, the embodiment of the invention also discloses a network access method, which comprises the steps of receiving a first access request aiming at a first P L MN sent by user equipment, searching a plurality of available P L MNs when the home P L MN and the registered P L MN are unavailable by the user equipment, selecting the first P L MN from the plurality of searched P L MNs for residing, and receiving a candidate network list sent by the user equipment, wherein the candidate network list comprises a plurality of P L MNs searched by the user equipment.
In order to solve the above technical problem, an embodiment of the present invention further discloses a network access apparatus, where the network access apparatus includes a searching module adapted to search a plurality of available P L MNs when a home P L MN and a registered P L MN are unavailable, a first access request sending module adapted to select a first P L MN from the plurality of searched P L MNs for camping, and send a first access request for the first P L MN to a network side, and a candidate network list sending module adapted to send a candidate network list to the network side, where the candidate network list includes the plurality of P L MNs.
In order to solve the foregoing technical problem, an embodiment of the present invention further discloses a network access apparatus, where the network access apparatus includes a first receiving module, adapted to receive a first access request for a first P L MN sent by a user equipment, where the user equipment searches for a plurality of available P L MNs when a home P L MN and a registered P L MN are unavailable, and selects the first P L MN from the plurality of searched P L MNs to camp on the user equipment, and a candidate network list receiving module, adapted to receive a candidate network list sent by the user equipment, where the candidate network list includes a plurality of P L MNs searched by the user equipment.
In order to solve the above technical problem, an embodiment of the present invention further discloses a user equipment, where the user equipment includes the network access device.
In order to solve the technical problem, the embodiment of the invention also discloses a base station, and the base station comprises the network access device.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the technical scheme includes that when a home P L MN and a registered P L MN are unavailable, an available plurality of P L0 MNs are searched, a first P L2 MN is selected from the searched plurality of P L1 MNs to reside, a first access request aiming at the first P L MN is sent to a network side, a candidate network list is sent to the network side, the candidate network list comprises a plurality of P L MN., when the user equipment selects the first P L MN to be accessed, the user equipment selects from the searched plurality of P L MNs, unnecessary access attempts to the P L MN in the priority list can be avoided when the P L MN in the priority list is unavailable or not updated timely, in addition, the candidate network list is sent to the network side, so that the P L to be accessed next time by the user equipment can be selected from the candidate network list, and the P L MN in the candidate network list is available, thereby realizing optimization of network access and improving communication efficiency and user experience.
Further, if the network side rejects the second access request, the next P L MN is selected to reside according to the indication of the network side, and the access request aiming at the next P L MN is sent until the network side accepts the access request.
Drawings
Fig. 1 is a schematic diagram of a network selection process in the prior art;
fig. 2 is a flowchart of a network access method according to an embodiment of the present invention;
fig. 3 is a flow chart of another network access method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a network selection process according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a network access device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another network access device according to an embodiment of the present invention.
Detailed Description
In addition, the priority list in the USIM cannot be updated in time, which causes unnecessary access attempts to the network by the UE, and even when the access request is accepted, the selected P L MN is not necessarily the optimal roaming network, which brings extra overhead to the user and reduces the user experience.
In addition, the P L MN to be accessed by the user equipment can be selected from the candidate network list by sending the candidate network list to the network side, and the P L MN in the candidate network list is available, thereby realizing the optimization of network access and improving the communication efficiency and the user experience.
Note that the symbol "/" in this document denotes a logical relationship "or".
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 2 is a flowchart of a network access method according to an embodiment of the present invention.
The network access method shown in fig. 2 may be used on the user equipment side, e.g. performed by the user equipment.
The network access method may include the steps of:
step S201, when the home P L MN and the registration P L MN are not available, searching a plurality of available P L MNs;
step S202, selecting a first P L MN from a plurality of searched P L MNs for residing, and sending a first access request aiming at the first P L MN to a network side;
step S203, sending a candidate network list to the network side, wherein the candidate network list comprises the plurality of P L MNs.
In step S201, when the home P L MN and the registration P L MN are unavailable, the UE may search for available P L MN., specifically, the UE may perform full-band frequency sweeping after powering on, and may obtain a currently available P L MN in a system message.
It should be noted that, when searching for available P L MN, the UE may also search for Forbidden P L MN (Forbidden P L MN) and add the searched FP L MN to the candidate network list.
In a specific implementation, in step S202, the ue may select one P L MN from the plurality of searched P L MNs as a first P L MN and camp on the first P L MN, and after camping, may send a first access request for the first P L MN to the network side.
In the prior art, when the P L MN in the priority list is not available, the ue still needs to make unnecessary access attempts one by one, resulting in increased signaling interaction, through step S201 and step S202, unnecessary access attempts can be reduced, thereby reducing signaling interaction.
Further, if the network side accepts the first access request, it indicates that the ue can access the first P L MN, and the ue can continue the access procedure with respect to the first P L MN.
In a specific implementation, in step S203, the ue may further send a candidate network list to the network side, where the candidate network list may be used by the network side to select the P L MN to indicate the ue to perform network access, and further, when the network side rejects the access request, the candidate network list may be used by the network side to select a next P L MN to indicate the ue to perform network access.
It should be noted that the timing for transmitting the candidate network list may be the same as the timing for transmitting the first access request, or may not be the same.
In addition, the P L MN to be accessed by the user equipment can be selected from the candidate network list by sending the candidate network list to the network side, and the P L MN in the candidate network list is available, so that the optimization of network access is realized, and the communication efficiency and the user experience are improved.
It will be appreciated that the candidate network list may also include the first P L MN.
Preferably, the step S201 may include the step of determining the first P L MN in the order recorded by the priority list and performing the camping if at least one P L MN of the plurality of P L MNs is identical to the P L MN of the priority list, that is, when there is an available P L MN in the priority list, the user equipment preferentially selects the P L MN of the priority list to camp on.
For example, the UE searches that a plurality of P L MNs are A, B, C, D and E, and P L MNs in a priority list are 1, 2, 3, 4 and 5 in sequence according to the priority order, if the P L0 MNA and the P L1 MN1 are the same P L2 MN, the UE selects the P L3 MN to camp on and sends an access request aiming at the P L4 MN, and if the P L5 MNA and the P L MN1 are the same P L MN, the P L MNB and the P L MN2 are the same P L MN, the UE selects the P L MNA (namely the P L MN1) to camp on and sends an access request aiming at the P L MNA.
In other words, the user equipment sends the candidate network list to the network side when sending the access request for the first time, so that the network side can directly select the next P L MN from the candidate network list to indicate the user equipment to access when the user equipment fails to access the first P L MN.
Preferably, step S203 may include the steps of: and carrying the candidate network list in a Non-Access Stratum (NAS) message or a Radio Resource Control (RRC) message for transmission.
Preferably, the network access method shown in fig. 2 may further include the steps of selecting a second P L MN indicated by the network side for camping if the network side rejects the first access request, the second P L MN being selected and determined by the network side from the candidate list, sending a second access request for the second P L MN to the network side, that is, when the access for the first P L MN fails, the user equipment may select a second P L MN indicated by the network side for camping and attempting to access, and if the network side accepts the second access request, indicating that the access of the user equipment for the second P L MN is successful.
Further, the second P L MN is selected by the network side in the candidate network list.
Further, the network access method shown in fig. 2 may further include the following steps, if the network side rejects the second access request, continuing to select a next P L MN for camping according to the indication of the network side, and sending an access request for the next P L MN until the network side accepts the access request.
In other words, if the network side rejects the first access request for the first P L MN and the second access request for the second P L MN, the network side may add the first P L MN and the second P L MN to the rejected network list, and when determining the next P L MN to be accessed, the network side may exclude the first P L MN and the second P L MN from the rejected network list, so as to avoid repeated access of the user equipment and improve the efficiency of network access.
Preferably, the network side groups the plurality of P L MNs to the home P L MN., specifically, the network side improves the grouping of the plurality of P L MNs in the candidate network list to the home P L MN, and may prioritize the plurality of P L MNs when determining the next P L MN.
Fig. 3 is a flowchart of another network access method according to an embodiment of the present invention.
The network access method shown in fig. 3 may be used on the network side, e.g. performed by the network side.
The network access method may include the steps of:
step S301, receiving a first access request aiming at a first P L MN sent by user equipment, searching a plurality of available P L MNs when a home P L MN and a registered P L MN are unavailable by the user equipment, and selecting the first P L MN to reside in the plurality of searched P L MNs;
step S302, receiving a candidate network list sent by the user equipment, wherein the candidate network list comprises a plurality of P L MNs searched by the user equipment.
In a specific implementation, the network side may receive an access request sent by the user equipment, and may also receive a candidate network list sent by the user equipment, where when the network side rejects the access request, the network side may select a next P L MN in the candidate network list, so that the user equipment performs a next camping and accessing.
Preferably, the network access method shown in fig. 3 may include the steps of selecting and determining a second P L MN from the candidate list if the first access request is rejected, indicating the second P L MN to the user equipment, so that the user equipment resides in the second P L MN, and sending a second access request for the second P L MN.
Further, selecting a determined second P L MN from the candidate list may include the step of selecting the second P L MN in the candidate network list.
Preferably, the candidate network list is carried in the first access request.
Preferably, the network access method shown in fig. 3 may include the steps of, if the second access request is rejected, continuing to determine and instruct a next P L MN so that the user equipment selects the next P L MN to camp on, and transmitting an access request for the next P L MN until the access request is accepted.
The embodiment of the invention can select and determine the P L MN in the candidate list by the network side when the network side refuses the access request, the user equipment can perform residence and access based on the P L MN, and the P L MN is selected by the network side and indicated to the user equipment, thereby ensuring the network access efficiency and realizing the further optimization of the network access.
Further, the network access method shown in FIG. 3 may include the steps of adding a P L MN having rejected access to a rejected network list, and determining the next P L MN in the candidate network list, and the next P L MN does not belong to the rejected network list.
More specifically, the second P L MN or the next P L MN is carried in a NAS message or an RRC message, that is, after rejecting the access request, the network may send a connection Reject response (Attach Reject), and then may carry the second P L MN or the next P L MN in the connection Reject response, or the network side may also carry the second P L MN or the next P L MN in a NAS message or an RRC message for sending.
In a variation of the present invention, if all P L MNs in the candidate network list are forbidden, the network side can send indication information to the UE to inform the UE that all P L MNs are forbidden, for example, the indication information can be an empty candidate network list.
For more specific implementation of the embodiment of the present invention, reference may be made to the network access method shown in fig. 1, which is not described herein again.
Fig. 4 is a schematic diagram of a network selection process according to an embodiment of the present invention.
As shown in fig. 4, in step [1], the UE is in an automatic Network selection mode, a plurality of available P L MNs are available for the UE to select, the UE may search for an available plurality of P L MN. in step [2], the UE selects a first P L MN of the plurality of P L MNs to camp on and sends a first access Request (Attach Request) for a first P L MN. further, the first access Request may carry a Network candidate list in the Network side (Network) may group P L MNs in the Network candidate list to HP 7 in step [3], the Network side rejects the access procedure of the UE for the first P L MN.
It will be appreciated that if the P L MN in the network candidate list coincides with the P L MN in the priority list, then the next P L MN. is determined in the order of the priority list records, in which case the next P L MN is also the P L MN in the priority list.
In step [4], the UE selects the next P L MN. indicated by the network side, and in step [5], the UE sends an access request for the next P L MN after residing in the next P L MN. specifically, since the network side already receives the network candidate list in step [2], the network candidate list does not need to be carried in the access request of the step to save resources, and in step [6], the network side accepts the access procedure of the UE for the next P L MN, and the UE successfully accesses the next P L MN.
For example, when the UE moves or searches a new P L MN, the network candidate list is carried in the next access request to update the P L MN in the network candidate list.
It can be understood by those skilled in the art that the signaling names in the embodiment, such as the access request and the connection rejection response, may also adopt any other implementable names, and the embodiment of the present invention is not limited thereto.
In the embodiment of the invention, the UE searches available P L MN and forms a candidate network list for the network side to indicate the next P L MN, so that the optimization of the network access process can be realized, and meanwhile, different priority lists can be prevented from being configured for each country/region.
Fig. 5 is a schematic structural diagram of a network access device according to an embodiment of the present invention.
The network access apparatus 50 shown in fig. 5 may be used for the user equipment side. The illustrated network access device 50 may include a search module 501, a first access request transmission module 502, and a candidate network list transmission module 503.
The searching module 501 is suitable for searching a plurality of available P L MNs when a home P L MN and a registered P L MN are unavailable, the first access request sending module 502 is suitable for selecting a first P L MN from the plurality of searched P L MNs to camp on and sending a first access request aiming at the first P L MN to a network side, and the candidate network list sending module 503 is suitable for sending a candidate network list to the network side, wherein the candidate network list comprises the plurality of P L MNs.
In addition, the P L MN to be accessed by the user equipment can be selected from the candidate network list by sending the candidate network list to the network side, and the P L MN in the candidate network list is available, so that the optimization of network access is realized, and the communication efficiency and the user experience are improved.
Preferably, the first access request sending module 502 may include a first P L MN determining unit 5021 the first P L MN determining unit 5021 is adapted to determine the first P L MN in the order of the priority list records and camp on when at least one P L MN among the plurality of P L MNs coincides with a P L MN in the priority list.
Further, the candidate network list is carried in the first access request.
Preferably, the network access device 50 may comprise a second camping module 504 and a second access request sending module 505, the second camping module 504 is adapted to select a second P L MN indicated by the network side for camping when the network side rejects the first access request, the second P L MN is determined by the network side from the candidate list, and the second access request sending module 505 is adapted to send a second access request for the second P L MN to the network side.
Preferably, the network access apparatus 50 may further include an access request sending module 506, and the access request sending module 506 is adapted to, when the network side rejects the second access request, continue to select a next P L MN for camping according to the indication of the network side, and send an access request for the next P L MN until the network side accepts the access request.
For more details of the operation principle and the operation mode of the network access apparatus 50, reference may be made to the relevant descriptions in fig. 2 to fig. 4, which are not described herein again.
Fig. 6 is a schematic structural diagram of another network access device according to an embodiment of the present invention.
The network access device 60 shown in fig. 6 may be used on the network side. The network access device 60 may include a first receiving module 601 and a candidate network list receiving module 602.
The first receiving module 601 is adapted to receive a first access request for a first P L MN sent by a user equipment, the user equipment searches available P L MNs and selects the first P L MN to camp on among the searched P L MNs when a home P L MN and a registered P L MN are unavailable, and the candidate network list receiving module 602 is adapted to receive a candidate network list sent by the user equipment, the candidate network list including a plurality of P L MNs searched by the user equipment.
Preferably, the network access apparatus 60 may further comprise a second P L MN determining module 603 and a second P L MN indicating module 604, the second P L MN determining module 603 is adapted to select and determine a second P L MN from the candidate list when the first access request is rejected, and the second P L MN indicating module 604 is adapted to indicate the second P L MN to the user equipment, so that the user equipment is resided at the second P L MN, and send a second access request for the second P L MN.
Preferably, the network access device 60 may further include a next P L MN indication module 605, and the next P L MN indication module 605 is adapted to continue to determine and indicate a next P L MN when the second access request is rejected, so that the user equipment selects the next P L MN to camp on, and sends the access request for the next P L MN until the access request is accepted.
Further, the next P L MN indication module 605 may comprise a joining unit 6051 and a determining unit 6052, the joining unit 6051 being adapted to join the P L MN being denied access to the denied network list, the determining unit 6052 being adapted to determine the next P L MN in the candidate network list, and the next P L MN not belonging to the denied network list.
Preferably, the network access device 60 may further comprise a grouping module 606, the grouping module 606 being adapted to group the plurality of P L MNs to the home P L MN.
For more details of the operation principle and the operation mode of the network access apparatus 60, reference may be made to the description of fig. 2 to fig. 4, which is not described herein again.
The embodiment of the present invention further discloses a user equipment, which may include a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the steps of the network access method shown in fig. 2 when running the computer instruction. In particular, the user device may include, but is not limited to, a cell phone, a tablet, a computer, and the like.
The embodiment of the present invention also discloses a base station, which may include a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the steps of the network access method shown in fig. 3 when executing the computer instructions.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (36)

1. A network access method, comprising:
searching for available multiple P L MNs when a home P L MN and a registered P L MN are unavailable;
selecting a first P L MN from the searched P L MNs for residing, and sending a first access request aiming at the first P L MN to a network side;
sending a candidate network list to a network side, wherein the candidate network list comprises the plurality of P L MNs;
if the network side rejects the first access request, selecting a second P L MN indicated by the network side for camping, wherein the second P L MN is selected and determined by the network side from the candidate list;
and sending a second access request aiming at the second P L MN to the network side.
2. The network access method of claim 1, wherein the selecting a first P L MN to camp on among the plurality of searched P L MNs comprises:
if at least one P L MN of the plurality of P L MNs is consistent with a P L MN in a priority list, determining the first P L MN in the order recorded by the priority list and performing camping.
3. The network access method of claim 1, wherein the list of candidate networks is carried in the first access request.
4. The network access method of claim 1, wherein if all P L MNs in the candidate network list are forbidden P L MNs, the network side sends indication information to indicate that all P L MNs are forbidden P L MNs.
5. The network access method of claim 1, wherein the second P L MN is selected by the network side in the candidate network list.
6. The network access method of claim 1, further comprising:
if the network side refuses the second access request, continuing to select a next P L MN for residing according to the indication of the network side, and sending an access request aiming at the next P L MN until the network side accepts the access request.
7. The network access method of claim 6, wherein the network side adds a P L MN with access denied to a denied network list, and wherein the next P L MN is selected from the candidate network list and does not belong to the denied network list.
8. The network access method of claim 1, wherein the network side groups the plurality of P L MNs into home P L MNs.
9. The network access method of claim 1, wherein the sending the candidate network list to the network side comprises:
and carrying the candidate network list in NAS information or RRC information for sending.
10. A network access method, comprising:
receiving a first access request aiming at a first P L MN sent by user equipment, wherein the user equipment searches a plurality of available P L MNs when a home P L MN and a registered P L MN are unavailable, and selects the first P L MN to reside in the plurality of searched P L MNs;
receiving a candidate network list sent by the user equipment, wherein the candidate network list comprises a plurality of P L MNs searched by the user equipment;
selecting a second P L MN from the candidate list if the first access request is rejected;
indicating the second P L MN to the user equipment such that the user equipment resides at the second P L MN and sends a second access request directed to the second P L MN.
11. The network access method of claim 10, wherein the UE determines the first P L MN in the order of the priority list record when at least one P L MN among the plurality of P L MNs is consistent with a P L MN among the priority list.
12. The network access method of claim 10, wherein the list of candidate networks is carried in the first access request.
13. The network access method of claim 10, further comprising:
if all P L MNs in the candidate network list are forbidden P L MNs, sending indication information to the user equipment to indicate that all P L MNs are forbidden P L MNs.
14. The network access method of claim 10, wherein the selecting and determining a second P L MN from the candidate list comprises:
selecting the second P L MN in the candidate network list.
15. The network access method of claim 10, further comprising:
if the second access request is rejected, continuing to determine and indicate a next P L MN, so that the user equipment selects the next P L MN to camp on, and sending an access request for the next P L MN until the access request is accepted.
16. The network access method of claim 15, wherein the determining the next P L MN comprises:
adding the P L MN which rejects the access into a rejection network list;
the next P L MN is determined in the candidate network list and the next P L MN does not belong to the deny network list.
17. The network access method of claim 15, wherein the second P L MN or the next P L MN is carried with a connection reject response, a NAS message, or an RRC message.
18. The network access method of claim 10, further comprising:
grouping the plurality of P L MNs into a home P L MN.
19. A network access apparatus, comprising:
a search module adapted to search for available multiple P L MNs when a home P L MN and a registered P L MN are unavailable;
a first access request sending module, adapted to select a first P L MN from the searched P L MNs to camp on, and send a first access request for the first P L MN to a network side;
a candidate network list sending module, adapted to send a candidate network list to a network side, where the candidate network list includes the plurality of P L MNs;
a second residing module, adapted to select a second P L MN indicated by the network side for residing when the network side rejects the first access request, wherein the second P L MN is selected and determined by the network side from the candidate list;
a second access request sending module, adapted to send a second access request for the second P L MN to the network side.
20. The network access apparatus of claim 19, wherein the first access request sending module comprises:
a first P L MN determining unit adapted to determine and camp on the first P L MN in the order recorded by the priority list when at least one P L MN among the plurality of P L MNs coincides with a P L MN among the priority list.
21. The network access device of claim 19, wherein the list of candidate networks is carried in the first access request.
22. The network access apparatus of claim 19, wherein the second P L MN is selected by the network side in the candidate network list.
23. The network access apparatus of claim 19, further comprising:
and the access request sending module is suitable for continuing to select the next P L MN for residing according to the indication of the network side when the network side rejects the second access request, and sending the access request aiming at the next P L MN until the network side accepts the access request.
24. The network access apparatus of claim 23, wherein the network side adds a rejected P L MN to a rejected network list, and wherein the next P L MN is selected from the candidate network list and does not belong to the rejected network list.
25. The network access apparatus of claim 19, wherein the network side groups the plurality of P L MNs into a home P L MN.
26. The network access device of claim 19, wherein the candidate network list sending module carries the candidate network list in a NAS message or an RRC message for sending.
27. A network access apparatus, comprising:
a first receiving module, adapted to receive a first access request for a first P L MN sent by a user equipment, where the user equipment searches available multiple P L MNs when a home P L MN and a registered P L MN are unavailable, and selects the first P L MN to camp on among the searched multiple P L MNs;
a candidate network list receiving module, adapted to receive a candidate network list sent by the user equipment, where the candidate network list includes a plurality of P L MNs searched by the user equipment;
a second P L MN determining module adapted to select a determined second P L MN from the candidate list upon rejecting the first access request;
a second P L MN indicating module adapted to indicate the second P L MN to the user equipment, to cause the user equipment to reside at the second P L MN, and to send a second access request directed to the second P L MN.
28. The network access apparatus of claim 27, wherein the UE determines the first P L MN in the order recorded by the priority list when at least one P L MN of the plurality of P L MNs is consistent with a P L MN of the priority list.
29. The network access device of claim 27, wherein the list of candidate networks is carried in the first access request.
30. The network access apparatus of claim 27, wherein the second P L MN determination module selects the second P L MN in the candidate network list.
31. The network access apparatus of claim 27, further comprising:
a next P L MN indicating module adapted to continue determining and indicating a next P L MN when the second access request is rejected, so that the user equipment selects the next P L MN for camping, and sends an access request for the next P L MN until the access request is accepted.
32. The network access apparatus of claim 31, wherein the next P L MN indication module comprises:
a joining unit adapted to join the P L MN rejected for access to the rejected network list;
a determining unit adapted to determine the next P L MN in the candidate network list and the next P L MN does not belong to the rejected network list.
33. The network access apparatus of claim 31, wherein the second P L MN or the next P L MN is carried with a connection reject response, a NAS message, or an RRC message.
34. The network access apparatus of claim 27, further comprising:
a grouping module adapted to group the plurality of P L MNs to a home P L MN.
35. A user equipment comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the network access method of any of claims 1 to 9.
36. A base station comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the network access method of any of claims 10 to 18.
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