CN104247553A

CN104247553A - Method and equipment for establishing connection

Info

Publication number: CN104247553A
Application number: CN201380002325.7A
Authority: CN
Inventors: 王燕; 陈玉华; 高永强
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-03-22
Filing date: 2013-03-22
Publication date: 2014-12-24
Anticipated expiration: 2033-03-22
Also published as: CN104247553B; CN109327917B; CN109327917A

Abstract

The invention provides a method and equipment for establishing connection. The method comprises the following steps: sending RRC connection release information to first client equipment from a first base station, wherein the RRC connection release information carries a first rapid connetion identifier, which is used to indicate the first client equipment to preserve the context of the first clinet equipment; receiving the RRC connection establishment request from the first client equipment by the first base station, wherein the RRC connection establishment request carries S-TMSI of the first client equipment; searching the context of the first client equipment in the contexts which have been stored in each client equipment in advance by the first base station through utilizing S-TMSI, sending RRC connection establishment information to the first client equipment, wherein the RRC connection establishment information carries a second rapid connection identifier, which is used to notify the first clinet equipment to carry out rapid connection by utilizing the preserved context of the first clinet equipment; and receiving the RRC connection establishment finishing information from the first clinet equipment by the first base station.

Description

Method and equipment for establishing connection

Technical Field

The present invention relates to communications technologies, and in particular, to a method and a device for establishing a connection.

Background

With the development of communication technology, more and more User Equipments (UE) need to transmit data through a wireless network, and generally need to interact with a network side at regular time intervals to transmit a small data packet, for example, several or tens of bits.

In the prior art, after completing data transmission between the UE and the base station, the UE exits from a Radio Resource Control (RRC) connection state, returns to an idle state, and reestablishes an RRC connection when data transmission with the base station is required next time, so that a large amount of signaling interaction between an air interface and a network side is required, and a network signaling load is heavy.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for establishing connection, which are used for reducing signaling overhead generated when a terminal transmits a small data packet.

In a first aspect, a method for establishing a connection is provided, including:

a first base station sends a Radio Resource Control (RRC) connection release message to first user equipment, wherein the RRC connection release message carries a first quick connection identifier, and the first quick connection identifier is used for indicating the first user equipment that the first base station stores the context of the first user equipment;

the first base station receives an RRC connection establishment request sent by the first user equipment, wherein the RRC connection establishment request carries a system architecture evolution temporary mobile subscriber identity (S-TMSI) of the first user equipment;

the first base station searches the context of the first user equipment in the contexts of the user equipment pre-stored by the first base station by using the S-TMSI, and if the context of the first user equipment exists, the first base station sends an RRC connection establishment message to the first user equipment, wherein the RRC connection establishment message carries a second quick connection identifier, and the second quick connection identifier is used for informing the first user equipment of using the pre-stored context of the first user equipment to carry out quick connection;

and the first base station receives an RRC connection establishment completion message sent by the first user equipment.

In a first possible implementation manner of the first aspect, before the sending, by the first base station, the RRC connection release message to the first user equipment, the method further includes:

the first base station receives a first fast connection request message sent by a Mobility Management Entity (MME), wherein the first fast connection request message carries the first fast connection identifier and the S-TMSI of the first user equipment; a first quick connection response message sent by the first base station to the MME; or,

the first base station sends a second quick connection request message to the MME, wherein the second quick connection request message carries the first quick connection identifier; and the first base station receives a second quick connection response message sent by the MME, wherein the second quick connection response message carries the S-TMSI of the first user equipment.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the first fast connection request message or the second fast connection response message further carries: the radio resource configuration information of the first user equipment is used for the first user equipment to communicate with the first base station.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in a third possible implementation manner, the RRC connection release message further carries: radio resource configuration information of the first user equipment, the radio resource configuration information being used for the fast connection.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in a fourth possible implementation manner, the RRC connection release message further carries a timing time, which is used to instruct the first user equipment to release or delete the context of the first user equipment, where the context is stored by the first user equipment, after a timer corresponding to the timing time expires.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the method further includes:

the first base station starts a timer corresponding to the timing time when sending the RRC connection release message;

and the first base station releases or deletes the pre-stored context of the first user equipment after the timer is overtime.

With reference to the fourth or fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the method further includes:

and the first base station sends a first context release request to the MME after the timer is overtime, wherein the first context release request is used for requesting the MME to release the context of the first user equipment which is saved in advance.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in a seventh possible implementation manner, before the sending, by the first base station, a radio resource control, RRC, connection release message to the first user equipment, the method further includes:

if the first user equipment is handed over from a second base station to the first base station,

in a handover process, the first base station receives a handover request message sent by the second base station, wherein the handover request message includes the S-TMSI; or

And in the switching process, the first base station receives the S-TMSI sent by the MME.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in an eighth possible implementation manner, the receiving, by the first base station, the S-TMSI sent by the MME includes:

the first base station receives a handover request message sent by the MME, wherein the handover request message comprises the S-TMSI, and the S-TMSI is obtained by the MME through a handover request message received from the second base station.

With reference to the first aspect or any one of the possible implementation manners of the first aspect, in a ninth possible implementation manner, the method further includes:

the first base station sends the RRC connection release message to second user equipment;

the first base station receives downlink data sent by a core network;

the first base station pages the second user equipment;

if the first base station fails to page the second user equipment, the first base station sends a transmission failure message to the MME so that the MME pages the second user equipment.

In a second aspect, a method for establishing a connection is provided, including:

receiving, by a user equipment, a Radio Resource Control (RRC) connection release message sent by a base station, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to instruct the user equipment to store a context of the user equipment;

the user equipment saves the context of the user equipment;

the user equipment sends an RRC connection establishment request to the base station, wherein the RRC connection establishment request carries a system architecture evolution temporary mobile subscriber identity (S-TMSI) of the user equipment, so that the base station searches the context of the user equipment in the context of each user equipment pre-stored by the base station by using the S-TMSI;

the user equipment receives an RRC connection establishment message sent by the base station according to the context of the user equipment, wherein the RRC connection establishment message carries a second quick connection identifier, and the second quick connection identifier is used for informing the user equipment of using the pre-stored context of the user equipment to carry out quick connection;

and the user equipment sends an RRC connection establishment completion message to the base station.

In a first possible implementation manner of the second aspect, the RRC connection release message further carries: radio resource configuration information of the user equipment, the radio resource configuration information being used for the user equipment to communicate with the base station.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, before the sending, by the user equipment, an RRC connection setup complete message to the base station, the method further includes:

the user equipment determines whether the radio resources of the user equipment meet the data transmission after RRC connection establishment according to the radio resource configuration information of the user equipment;

if so, the RRC connection setup complete message sent by the ue to the base station carries fast connection indication information, where the fast connection indication information is used to indicate that the stored radio resource configuration information can be used between the ue and the base station, and radio link reconfiguration is not required.

With reference to the second aspect or any possible implementation manner of the second aspect, in a third possible implementation manner, the RRC connection release message further carries a timing time;

the method further comprises the following steps: the user equipment starts a timer, and releases or deletes the context of the user equipment after the timer is overtime.

In a third aspect, a base station is provided, including:

a sending module, configured to send a radio resource control, RRC, connection release message to a first user equipment, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to indicate that a context of the first user equipment is stored in the first base station of the first user equipment;

a receiving module, configured to receive an RRC connection establishment request sent by the first user equipment, where the RRC connection establishment request carries a system architecture evolution temporary mobile subscriber identity S-TMSI of the first user equipment;

and the storage module is used for storing the context of each user equipment.

A searching module, configured to search, by using the S-TMSI received by the receiving module, a context of the first user equipment from the contexts of the respective user equipments stored in the storing module;

the sending module is further configured to send an RRC connection establishment message to the first user equipment if the searching module finds the context of the first user equipment, where the RRC connection establishment message carries a second quick connection identifier, and the second quick connection identifier is used to notify the first user equipment that the context of the first user equipment, which is pre-stored by the first user equipment, is used for performing quick connection;

the receiving module is configured to receive an RRC connection setup complete message sent by the first user equipment.

In a first possible implementation manner of the third aspect, the receiving module is configured to receive a first fast connection request message sent by a mobility management entity MME, where the first fast connection request message carries the first fast connection identifier and an S-TMSI of the first user equipment; the sending module is configured to send a first quick connection response message to the MME; or,

the sending module is configured to send a second fast connection request message to the MME, where the second fast connection request message carries the first fast connection identifier; the receiving module is configured to receive a second quick connection response message sent by the MME, where the second quick connection response message carries the S-TMSI of the first user equipment.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner, the first fast connection request message sent by the sending module or the second fast connection response message received by the receiving module further carries: the radio resource configuration information of the first user equipment is used for the first user equipment to communicate with the first base station.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner, the RRC connection release message further carries: the radio resource configuration information of the first user equipment, where the radio resource configuration information is used for the first user equipment to communicate with the first base station.

With reference to the third aspect or any possible implementation manner of the third aspect, in a fourth possible implementation manner, the RRC connection release message further carries a timing time, which is used to instruct the first user equipment to release or delete the context of the first user equipment, where the context is stored by the first user equipment, after a timer corresponding to the timing time expires.

With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner, the base station further includes:

a timing module, configured to start a timer corresponding to the timing time when the sending module sends the RRC connection release message;

and the context releasing module is used for releasing or deleting the context of the first user equipment stored by the storage module after the timer of the timing module is overtime.

With reference to the fourth or fifth possible implementation manner of the third aspect, in a sixth possible implementation manner, the sending module is further configured to send a first context release request to the MME after the timer expires, where the first context release request is used to request the MME to release a context of the first user equipment, where the context is pre-saved by the MME.

With reference to the third aspect or any possible implementation manner of the third aspect, in a seventh possible implementation manner, the receiving module is further configured to, before the first base station sends a radio resource control, RRC, connection release message to the first user equipment, receive, in a handover process, a handover request message sent by the second base station if the first user equipment is handed over from the second base station to the first base station, where the handover request message includes the S-TMSI; or, in the switching process, receiving the S-TMSI sent by the MME.

With reference to the seventh possible implementation manner of the third aspect, in an eighth possible implementation manner, the receiving module is specifically configured to receive the S-TMSI sent by the MME as follows:

receiving a handover request message sent by the MME, wherein the handover request message comprises the S-TMSI, and the S-TMSI is obtained by the MME through a handover request message received from the second base station.

With reference to the third aspect or any possible implementation manner of the third aspect, in a ninth possible implementation manner, the sending module is further configured to send the RRC connection release message to a second user equipment;

the receiving module is further configured to receive downlink data sent by a core network;

a paging module, configured to page a second user equipment;

the sending module is further configured to send a transmission failure message to the MME if the paging module fails to page the second user equipment, so that the MME pages the second user equipment.

In a fourth aspect, a user equipment is provided, including:

a receiving module, configured to receive a radio resource control RRC connection release message sent by a base station, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to instruct the user equipment to store a context of the user equipment;

the storage module is used for storing the context of the user equipment;

a sending module, configured to send an RRC connection establishment request to the base station, where the RRC connection establishment request carries a system architecture evolution temporary mobile subscriber identity S-TMSI of the user equipment, so that the base station searches for a context of the user equipment in contexts of user equipments pre-stored in the base station by using the S-TMSI;

the receiving module is further configured to receive an RRC connection establishment message sent by the base station according to the context of the user equipment, where the RRC connection establishment message carries a second fast connection identifier;

the sending module is further configured to send an RRC connection setup complete message to the base station.

In a first possible implementation manner of the fourth aspect, the RRC connection release message received by the receiving module further carries: radio resource configuration information of the user equipment, the radio resource configuration information being used for the user equipment to communicate with the base station.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the user equipment further includes:

a determining module, configured to determine whether the radio resource satisfies data transmission after RRC connection establishment according to the radio resource configuration information;

if the determining module determines that the radio resource satisfies the data transmission after the RRC connection is established, the sending module sends, to the base station, an RRC connection establishment complete message carrying fast connection indication information, where the fast connection indication information is used to indicate that the stored radio resource configuration information can be used between the user equipment and the base station, and radio link reconfiguration is not required.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, in a third possible implementation manner, the RRC connection release message received by the receiving module further carries a timing time;

the user equipment further comprises:

a starting module, configured to start a timer, where the timer corresponds to the timing time carried in the RRC connection release message received by the receiving module;

a releasing module, configured to release or delete the saved context of the ue after the timer of the timing module expires.

In a fifth aspect, a base station is provided, including:

a transmitter, configured to send a radio resource control, RRC, connection release message to a first user equipment, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to indicate that a context for storing the first user equipment is stored in the first base station of the first user equipment;

a receiver, configured to receive an RRC connection establishment request sent by the first user equipment, where the RRC connection establishment request carries a system architecture evolution temporary mobile subscriber identity S-TMSI of the first user equipment;

a memory for storing a context of each user equipment;

a processor for searching a context of the first user equipment in the context of each user equipment stored in the memory using the S-TMSI received by the receiver;

the transmitter is further configured to send an RRC connection establishment message to the first user equipment if the processor finds the context of the first user equipment, where the RRC connection establishment message carries a second quick connection identifier, and the second quick connection identifier is used to notify the first user equipment that the context of the first user equipment, which is pre-stored by the first user equipment, is used for performing quick connection;

the receiver is further configured to receive an RRC connection setup complete message sent by the first user equipment.

In a first possible implementation manner of the fifth aspect, the receiver is further configured to receive a first fast connection request message sent by a mobility management entity MME, where the first fast connection request message carries the first fast connection identifier and the S-TMSI of the first user equipment; the transmitter is further configured to transmit a first quick connection response message to the MME; or,

the sender is configured to send a second fast connection request message to the MME, where the second fast connection request message carries the first fast connection identifier; the receiver is further configured to receive a second quick connection response message sent by the MME, where the second quick connection response message carries the S-TMSI of the first user equipment.

According to a first possible implementation manner of the fifth aspect, in a second possible implementation manner, the first fast connection request message sent by the sender or the second fast connection response message received by the receiver further carries: the radio resource configuration information of the first user equipment is used for the first user equipment to communicate with the first base station.

According to a second possible implementation manner of the fifth aspect, in a third possible implementation manner, the RRC connection release message sent by the sender further carries: the radio resource configuration information of the first user equipment.

With reference to the fifth aspect or any possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the RRC connection release message further carries a timing time, and the sending module sends the timing time.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner, the processor is further configured to:

when the receiver receives the RRC connection release message, starting a timer corresponding to the timing time;

and releasing or deleting the context of the first user equipment stored in the memory after the timer is overtime.

With reference to the third or fourth possible implementation manner of the fifth aspect, in a sixth possible implementation manner, the transmitter is further configured to:

and sending a first context release request to the MME after the timer is overtime, wherein the first context release request is used for requesting the MME to release the context of the first user equipment which is saved in advance.

With reference to the fifth aspect or any possible implementation manner of the fifth aspect, in a seventh possible implementation manner,

the receiver is further configured to, before the transmitter sends the RRC connection release message to a first user equipment, receive a handover request message sent by a second base station in a handover process if the first user equipment is handed over from the second base station to the first base station, where the handover request message includes the S-TMSI; or, in the switching process, receiving the S-TMSI sent by the MME.

With reference to the seventh possible implementation manner of the fifth aspect, in an eighth possible implementation manner,

the receiver is specifically configured to receive the S-TMSI sent by the MME as follows:

In a sixth aspect, a user equipment is provided, including:

a receiver, configured to receive a radio resource control, RRC, connection release message sent by a base station, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to instruct the ue to store a context of the ue;

the processor is used for indicating the memory to store the context of the user equipment according to a first quick connection identifier carried in the RRC connection release message received by the receiver;

a memory for saving a context of the user equipment;

a transmitter, configured to send an RRC connection establishment request to the base station, where the RRC connection establishment request carries a system architecture evolution temporary mobile subscriber identity S-TMSI of the user equipment, so that the base station searches for a context of the user equipment in a context of each user equipment that is pre-stored in the base station by using the S-TMSI;

the receiver is further configured to receive an RRC connection setup message sent by the base station, where the RRC connection setup message carries a second fast connection identifier;

the transmitter is further configured to transmit an RRC connection setup complete message to the base station.

In a first possible implementation manner of the sixth aspect, the RRC connection release message received by the receiver further carries: radio resource configuration information of the user equipment.

In a second possible implementation manner, according to the first possible implementation manner of the sixth aspect, the processor is further configured to:

determining whether the radio resources meet data transmission after RRC connection establishment according to the radio resource configuration information;

if the processor determines that the radio resource meets the data transmission after the RRC connection is established, the transmitter transmits, to the base station, an RRC connection establishment completion message in which fast connection indication information is carried, where the fast connection indication information is used to indicate that the stored radio resource configuration information can be used between the user equipment and the base station, and radio link reconfiguration is not required.

With reference to the sixth aspect or any possible implementation manner of the sixth aspect, in a third possible implementation manner, the RRC connection release message received by the receiver further carries a timing time;

the user equipment further comprises:

a timing module for starting a timer corresponding to the timing time;

A seventh aspect provides a resource release method, including:

a first base station sends a Radio Resource Control (RRC) connection release message to user equipment, wherein the RRC connection release message carries a first quick connection identifier, and the first quick connection identifier is used for indicating the user equipment that the first base station stores the context of the user equipment;

the first base station receives a second context release request sent by a Mobility Management Entity (MME), wherein the second context release request is used for indicating the first base station to release the context of the user equipment, and the second context release request is sent by the MME to the first base station after receiving a message sent by the second base station that the user equipment is accessed to the second base station.

In an eighth aspect, a method for establishing a connection is provided, including:

a base station sends a Radio Resource Control (RRC) connection release message to user equipment, wherein the RRC connection release message carries a quick connection identifier which is used for indicating the user equipment that the base station stores the context of the user equipment;

the base station receives downlink data sent by a core network;

the base station pages the user equipment;

if the base station fails to page the user equipment, the base station sends a transmission failure message to the MME so that the MME pages the user equipment.

In a ninth aspect, a method for establishing a connection is provided, including:

a base station sends a Radio Resource Control (RRC) connection release message to user equipment and starts a timer, wherein the RRC connection release message carries the timing time of the timer, and the RRC connection release message is used for indicating the user equipment to release or delete the context of the user equipment after the timing time is overtime;

and the base station releases or deletes the context of the user equipment after the timer is overtime.

In a first possible implementation manner of the ninth aspect, the method further includes:

and the base station sends a context release request to the mobility management entity MME after the timing time is overtime, wherein the context release request is used for requesting the MME to release the context of the user equipment.

In a tenth aspect, there is provided a base station, the base station being a first base station, comprising:

a sending module, configured to send a radio resource control, RRC, connection release message to a user equipment, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to indicate that the first base station of the user equipment stores a context of the user equipment;

a storage module for storing a context of the user equipment;

a receiving module, configured to receive a second context release request sent by a mobility management entity MME, where the second context release request is used to instruct a base station to release a context of a user equipment, and the second context release request is sent by the MME to a first base station after receiving a message sent by the second base station that the user equipment accesses the second base station;

and the processing module is used for releasing the context of the user equipment stored by the storage module after the receiving module receives the second context release request.

In an eleventh aspect, there is provided a base station comprising:

a sending module, configured to send a radio resource control RRC connection release message to a user equipment, where the RRC connection release message carries a fast connection identifier, and the fast connection identifier is used to indicate that the base station of the user equipment stores a context of the user equipment;

a receiving module, configured to receive downlink data sent by a core network;

and the processing module is used for controlling the sending module to page the user equipment after the receiving module receives the downlink data, and if the paging of the user equipment fails, controlling the sending module to send a transmission failure message to the MME so that the MME pages the user equipment.

In a twelfth aspect, there is provided a base station, comprising:

a sending module, configured to send a radio resource control RRC connection release message to a user equipment;

the storage module is used for storing the context of the user equipment;

a processing module, configured to control the sending module to send a radio resource control, RRC, connection release message to the ue, and start a timer, where the RRC connection release message carries a timing time of the timer, and the RRC connection release message is used to instruct the ue to release or delete a context of the ue after the timing time is expired; and releasing or deleting the context of the user equipment stored in the storage module after the timer is overtime.

In a first possible implementation form of the twelfth aspect,

the processing module is further configured to control the sending module to send a context release request to the mobility management entity MME after the timing time is expired, where the context release request is used to request the MME to release the context of the user equipment.

In a thirteenth aspect, a base station is provided, where the base station is a first base station, and the base station includes:

a transmitter, configured to send a radio resource control, RRC, connection release message to a user equipment, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to indicate that a context of the user equipment is stored in the first base station of the user equipment;

a memory for storing a context of the user equipment;

a receiver, configured to receive a second context release request sent by a mobility management entity MME, where the second context release request is used to instruct a base station to release a context of the user equipment, and the second context release request is sent by the MME to a first base station after receiving a message sent by the second base station that the user equipment accesses the second base station;

a processor, configured to release the context of the user equipment stored in the memory after the receiver receives the second context release request.

In a fourteenth aspect, a base station is provided, including:

a transmitter, configured to send a radio resource control RRC connection release message to a user equipment, where the RRC connection release message carries a fast connection identifier, and the fast connection identifier is used to indicate that the base station of the user equipment stores a context of the user equipment;

the receiver is used for receiving downlink data sent by a core network;

and the processor is configured to control the transmitter to page the ue after the receiver receives the downlink data, and if paging of the ue fails, control the transmitter to transmit a transmission failure message to the MME, so that the MME pages the ue.

In a fifteenth aspect, a base station is provided, comprising:

a transmitter for transmitting a radio resource control, RRC, connection release message to a user equipment;

a memory for storing a context of a user device;

a processor, configured to control the transmitter to transmit a radio resource control, RRC, connection release message to the ue, and start a timer, where the RRC connection release message carries a timing time of the timer, and the RRC connection release message is used to instruct the ue to release or delete a context of the ue after the timing time is expired; releasing or deleting the context of the user equipment stored in the memory after the timer expires.

In a first possible implementation form of the fifteenth aspect,

the processor is further configured to control the transmitter to send a context release request to the mobility management entity MME after the timing time expires, where the context release request is used to request the MME to release the context of the user equipment.

According to the scheme, the first quick connection identifier is carried in the RRC connection release message to indicate the base station and the user equipment to store the context of the user equipment and the corresponding S-TMSI in advance, and the second quick connection identifier is carried in the RRC connection establishment message sent to the user equipment by the base station to inform the user equipment to use the context of the user equipment stored in advance to carry out quick connection, so that signaling overhead generated when the terminal transmits a small data packet is reduced, and quick establishment of connection is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a flowchart of a first embodiment of a method for establishing a connection according to the present invention;

FIG. 2 is a flowchart of a second method for establishing a connection according to the present invention;

FIG. 3 is a flowchart of a third embodiment of a method for establishing a connection according to the present invention;

FIG. 4 is a signaling flow diagram of a fourth embodiment of a method for establishing connectivity according to the present invention;

FIG. 5 is a signaling flow diagram of a fifth embodiment of a method for establishing a connection according to the present invention;

FIG. 6 is a flowchart of a sixth embodiment of a method for establishing a connection according to the present invention;

fig. 7 is a schematic structural diagram of a base station according to a first embodiment of the present invention;

fig. 8 is a schematic structural diagram of a ue according to a first embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second base station according to the embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second ue embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a base station according to still another embodiment of the present invention.

Fig. 12 is a schematic structural diagram of a base station according to still another embodiment of the present invention.

Fig. 13 is a schematic structural diagram of a base station according to still another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The techniques described herein may be used in various communication systems, such as current 2G, 3G communication systems and next generation communication systems, such as Global System for mobile communications (GSM), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Orthogonal Frequency-Division Multiple Access (SC-FDMA), General Packet Radio Service (GPRS, General Packet Radio Service (FDMA), Long Term Evolution (LTE), Long Term Evolution (Long Term Evolution), and other types of communication systems.

The user equipment referred to in this application may be a wireless terminal or a wired terminal, a wireless terminal may refer to a device providing voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. Wireless terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (e.g., RAN). For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), a User Device (User Device), or a User equipment (User equipment).

The base station referred to in this application is a generalized base station, and includes Radio resource management and data scheduling functions, and may include a Radio Network Controller (RNC), and may also include a device in an access Network that communicates with a wireless terminal over an air interface through one or more sectors. The base station may be configured to interconvert received air frames and IP packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station may also coordinate management of attributes for the air interface. For example, the Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an evolved Node B (NodeB or eNB or e-NodeB) in LTE, which is not limited in this application.

The numbers of the following embodiments of the present invention are merely for description and do not represent the merits of the embodiments. And the various embodiments and features of the embodiments may be combined with each other without conflict.

Fig. 1 is a flowchart of a first embodiment of a method for establishing a connection according to the present invention. As shown in fig. 1, the main execution body of the method for establishing a connection provided in this embodiment is a base station. The method for establishing connection in this embodiment specifically includes:

s101, a base station sends an RRC connection release message to user equipment, wherein the RRC connection release message carries a first quick connection identifier, and the first quick connection identifier is used for indicating the user equipment that the base station stores the context of the user equipment.

The user equipment may save the context of the user equipment after receiving the RRC connection release message. Of course, the first quick connection identifier may also be used to instruct the user equipment to save the context of the user equipment.

Specifically, the context of the ue includes radio resource configuration information of the ue, so that when the ue accesses again, the ue can directly use the radio resource configuration without performing reconfiguration on radio resources through an RRC reconfiguration message, thereby saving signaling overhead.

S102, a base station receives an RRC connection establishment request sent by user equipment, wherein the RRC connection establishment request carries a System architecture evolution temporary Mobile Subscriber Identity (S-TMSI, SAE architecture Mobile Subscriber Identity, wherein SAE is called System architecture evolution overall).

It should be noted that, in this step, the S-TMSI carried in the RRC connection establishment request may also be replaced by an MME S1Application Protocol (AP) UE Identity (ID). If the RRC connection establishment request carries the MME S1AP UE ID, the S-TMSI in the subsequent steps is replaced by the MME S1AP UE ID.

When the user equipment accesses again, the base station searches the context of the user equipment according to a Cell Radio Network Temporary Identifier (C-RNTI), so that the C-RNTI of the user equipment is kept all the time in the process, and the base station cannot distribute the C-RNTI to other user equipment. To avoid this problem, the present embodiment does not use the C-RNTI to look up the pre-stored UE context, but rather uses the S-TMSI. Therefore, in step S101, after the base station sends the RRC connection release message to the user equipment, the C-RNTI previously allocated to the user equipment may be released and may be allocated to other user equipment.

S103, the base station searches the context of the user equipment in the context of each user equipment pre-stored by the base station by using the S-TMSI, if the context of the user equipment exists, the base station sends an RRC connection establishment message to the user equipment, wherein the RRC connection establishment message carries a second quick connection identifier, and the second quick connection identifier is used for informing the user equipment of using the pre-stored context of the user equipment to carry out quick connection.

Specifically, one user equipment corresponds to one S-TMSI, so the base station can search the context of the user equipment sending the RRC connection establishment request from the pre-stored contexts of each user equipment through the S-TMSI. Preferably, when the context of the ue exists in advance, the RRC connection setup message sent to the ue may carry a second fast connection identifier, where the second fast connection identifier is used to notify the ue to use the context of the ue in advance to perform fast connection; if the context of the user equipment which is saved in advance does not exist, the second quick connection identifier is not carried when the RRC connection establishment message is sent to the UE, and the UE and the base station can establish connection by using the prior art.

Specifically, the RRC connection setup message carries a second fast connection identifier, where the second fast connection identifier is used to notify the ue to use a pre-stored context of the ue for fast connection.

S104, the base station receives an RRC connection establishment completion message sent by the user equipment.

In the process of establishing the connection, GPRS Tunneling Protocol (GTP) tunnels between the ue and the base station and between the ue and the Serving-Gateway (S-GW, Serving-Gateway) are maintained all the time, that is, the S1 interface application protocol (S1 AP, S1application protocol) connection is not released, but data transmission is not performed, so that in the process of re-accessing the ue, the base station does not need to interact with a Mobility Management Entity (MME) again to establish the GTP tunnel, and thus the S1AP identifier of the ue does not need to be re-allocated, thereby reducing signaling overhead on the network side.

Further, in the above S101, if the base station carries the Radio resource configuration information of the ue when sending the RRC connection release message to the ue, the base station may directly use the original Data Radio Bearer (DRB, Data Radio Bearer) configuration when the ue accesses the ue again, thereby saving signaling overhead generated in the new establishment process of the Radio Bearer.

In the method for establishing a connection provided in this embodiment, the first fast connection identifier is carried in the RRC connection release message to indicate that the ue is pre-stored with a context of the ue in the base station, and the S-TMSI of the ue is carried in the RRC connection establishment request sent by the ue to the base station, so that the base station searches the context of the ue in the pre-stored contexts of each ue by using the S-TMSI, and if the context of the ue is found, the second fast identifier is carried in the RRC connection establishment message sent by the base station to the ue to establish a fast connection, thereby reducing signaling overhead generated when the terminal transmits a data packet, and implementing fast establishment of a connection.

On the basis of the first embodiment, before S101, the method may further include: the base station receives a first quick connection request message sent by the MME. Optionally, the first fast connection request message may carry a first fast connection identifier and an S-TMSI of the UE, where the first fast connection request message may be a UE context release message or an added S1AP message, and specifically, the S1AP message may be defined as a UE fast connection request, a UE fast connection command, and a UE fast connection completion message, or may be defined as a UE context hold request, a UE context hold command, and a UE context completion message, which is not limited in this embodiment.

After a base station receives a first quick connection request message sent by an MME, the base station sends a first quick connection response message to the MME. Optionally, the first quick connection response message may carry a first quick connection identifier, so as to instruct the base station to store the context of the user equipment.

Alternatively, in addition to the first embodiment, before S101, the method may further include: the base station sends a second fast connection request message to the MME, optionally, the second fast connection request message may carry the first fast connection identifier, and the second fast connection request message may be a user equipment context release message or an added S1AP message, specifically, the S1AP message may be a UE fast connection request, a UE fast connection command, and a UE fast connection completion message, and may also be a UE context retention request, a UE context retention command, and a UE context completion message, which is not limited in this embodiment.

After the base station sends the second fast connection request message to the MME, the base station receives a second fast connection response message sent by the MME, and optionally, the second fast connection response message may carry the S-TMSI of the user equipment.

Since in the above embodiment, the base station needs to search the context of the UE through the S-TMSI, it is necessary to ensure that there is the S-TMSI of the UE at the base station, specifically, the S-TMSI may be carried when the MME sends a context release command message to the UE; the S-TMSI can also be carried in the newly added S1AP message; in the scenario that the ue moves from the original base station (hereinafter referred to as the source base station) to the cell coverage of another base station (hereinafter referred to as the target base station), the S-TMSI may be sent from the source base station to the target base station in the X2AP handover request message, or sent from the source base station to the MME in the S1AP handover request message, and then sent to the target base station by the MME carrying the S-TMSI in the S1AP handover request message, specifically, an S-TMSI cell may be newly added in the S1AP handover request message, or carried in a handover preparation cell; in the S1 handover procedure, the MME may send the S-TMSI to the target base station, that is, the MME carries the S-TMSI in the S1AP handover request message and sends the S-TMSI to the target base station, in this case, the S-TMSI may be obtained by the MME from the UE device context stored by the MME, which is not limited in this embodiment.

Further, the first quick connection request or the second quick connection response message may also carry: the radio resource configuration information of the user equipment, which can be used for the user equipment to communicate with the base station.

Further, the RRC connection release message may also carry radio resource configuration information of the user equipment.

Further, the RRC connection release message in step S101 may also carry a timing time, which is used to instruct the ue to release or delete the context of the first ue stored in the first ue after a timer corresponding to the timing time expires.

The method may further comprise:

the base station starts a timer corresponding to the timing time when sending the RRC connection release message;

and the base station releases or deletes the context of the user equipment which is saved in advance after the timer is overtime.

Further, the method may further include:

and the base station sends a context release request to the MME after the timer is overtime, wherein the context release request is used for requesting the MME to release the context of the user equipment which is saved in advance.

Further, the method of this embodiment may further include:

the base station sends the RRC connection release message to second user equipment;

the base station receives downlink data sent by a core network;

the base station pages the second user equipment;

if the base station fails to page the second user equipment, the base station sends a transmission failure message to an MME so that the MME pages the second user equipment.

In the method for establishing a connection provided by this embodiment, the base station carries the first fast connection request message or the second fast connection request message in the process of interacting with the MME, so that the MME or the base station triggers establishment of a fast connection, thereby reducing signaling overhead generated when the terminal transmits a data packet and implementing fast establishment of a connection.

Fig. 2 is a flowchart of a second method for establishing a connection according to the present invention. As shown in fig. 2, the method provided by this embodiment may include:

s201, the base station sends an RRC connection release message to the user equipment, wherein the RRC connection release message carries timing time and is used for indicating the user equipment to release or delete the stored context of the user equipment after the timing time is overtime.

S202, when the base station sends the RRC connection release message, the base station starts a timer corresponding to the timing time.

S203, the base station releases or deletes the context of the ue saved in advance after the timer expires.

When the user equipment accesses again, the base station searches the context of the user equipment according to a Cell Radio Network Temporary Identifier (C-RNTI), so that the C-RNTI of the user equipment is kept all the time in the process, and the base station does not distribute the C-RNTI to other user equipment, therefore, the timing time carried in an RRC connection release message sent to the user equipment by the base station can be used for indicating the user equipment to keep the context of the user equipment before the timing time is overtime, including keeping the C-RNTI, DRB configuration and the like of the user equipment, and indicating the user equipment to release or delete the stored context of the user equipment after the timing time is overtime and under the condition that the user equipment does not initiate reconnection.

Specifically, after the base station releases or deletes the context of the ue that is pre-saved, the base station may allocate the C-RNTI originally allocated to the ue to other ues.

Further, the method of this embodiment may further include:

s204, the base station sends a first context release request to the MME after the timing time expires, where the first context release request is used to request the MME to release the context of the user equipment, which is stored in advance.

Specifically, after the MME releases the context of the ue that is pre-stored, if the MME receives downlink data, the MME actively pages the ue to establish a connection and perform data transmission.

Preferably, if the ue leaves the coverage of the base station before the timing time expires, the ue sets the timing time to expire and releases or deletes the context of the ue, and the base station will wait until the timing time expires and then release or delete the context of the ue.

In the method for establishing a connection provided in this embodiment, the timing time is carried in the RRC connection release message to indicate the ue and the base station to maintain the context of the ue before the timing time is over, so that the base station searches the context of the ue according to the C-RNTI of the ue to establish a fast connection, thereby reducing signaling interaction between the ue and the network side, reducing signaling overhead generated when the terminal transmits a data packet, and implementing fast establishment of a connection.

Fig. 3 is a flowchart of a third method for establishing a connection according to the present invention. The application scenario of this embodiment is as follows: after the connection between the base station and the user equipment is released, the base station stores the context of the user equipment, if downlink data arrives at the moment, the MME does not know that the RRC connection of the user equipment is released, the MME can directly send the downlink data to the base station, and at the moment, the user equipment is in an idle state and cannot receive the downlink data. The method for establishing the connection provided by the embodiment can solve the problem of how the user equipment receives downlink data in the idle state. As shown in fig. 3, the method for establishing a connection provided in this embodiment may include:

s301, the base station sends RRC connection release information to the user equipment.

S302, the base station receives downlink data sent by the core network.

S303, the base station pages the user equipment.

S304, if the base station fails to page the user equipment, the base station sends a transmission failure message to MME so that the MME pages the user equipment.

In the method for establishing a connection provided in this embodiment, after the base station receives downlink data sent by the core network, the base station actively initiates paging on the user equipment, and determines whether the user equipment leaves an area covered by the base station, if the base station fails to page the user equipment, it may be considered that the user equipment leaves the area covered by the base station, and then the core network MME pages the user equipment, thereby reducing signaling overhead generated when the terminal transmits a small data packet, and implementing quick establishment of a connection.

Fig. 4 is a signaling flow chart of a fourth embodiment of the method for establishing connectivity according to the present invention. As shown in fig. 4, the method for establishing a connection provided in this embodiment may include:

s401, the MME sends a context release command to the base station.

The context release command may carry a first fast connection identifier, which is used to instruct the base station to store the context of the user equipment, and optionally, the first fast connection identifier may also be a context storage identifier, a context continuation identifier, and the like, which is not limited in this embodiment. Preferably, the context release command may also carry radio resource configuration information of the ue, so as to provide the base station with the radio resource configuration information used by the ue for subsequent access.

S402, the base station sends RRC connection release information to the user equipment.

Specifically, the RRC connection establishment request message may carry a first fast connection identifier to indicate the ue to store a context of the ue, and optionally, the RRC connection establishment request message may also carry radio resource configuration information of the ue, so that the ue may directly use the radio resource configuration in subsequent access without performing reconfiguration through an RRC reconfiguration message, which may save signaling overhead.

S403, the base station sends a user equipment context release completion message to the MME.

Optionally, the context release complete message may also carry a quick connection identifier, that is, the quick connection identifier may be carried in S401 and S402 at the same time, or may be carried in only one of the steps, which is not limited in this embodiment.

S402 to S403 have no strict timing restrictions.

S404, the user equipment sends an RRC connection establishment request to the base station.

Specifically, the S-TMSI of the user equipment can be carried in the RRC connection setup message.

Further, if the user equipment needs to actively send uplink data, S404 is directly executed; if downlink data arrives, before S404, the MME needs to send a paging message to the base station, and the paging message carries the S-TMSI of the user equipment, and the base station pages the user equipment over the air interface, and executes S404 when the user equipment receives the paging message.

S405, the base station sends an RRC connection establishment message to the user equipment.

In this step, the base station searches the context of the user equipment corresponding to the S-TMSI of the user equipment in the pre-stored contexts of each user equipment and the S-TMSI corresponding thereto according to the received S-TMSI, and if the context of the user equipment corresponding to the S-TMSI is found, carries a second fast connection identifier when sending an RRC connection establishment message to the user equipment, where the second fast connection identifier is used to notify the user equipment of using the pre-stored context of the user equipment to perform fast connection.

S406, the base station receives an RRC connection setup complete message sent by the user equipment.

Optionally, before the ue sends the RRC connection setup complete message to the base station, the ue may determine whether radio resources of the ue meet data transmission after RRC connection setup according to radio resource configuration information of the ue, and if so, the ue carries fast connection indication information in the RRC connection setup complete message sent to the base station, so as to indicate that the ue and the base station may use stored radio resource configuration information, such as radio resource configuration and security configuration, without performing radio link reconfiguration.

In this embodiment, the establishment of the fast connection in S401 to S403 is triggered by the MME, and it can be understood that, in another embodiment, the establishment of the fast connection in S401 to S403 may also be triggered by the base station, that is, the base station sends a context release command to the user equipment, and the context release command carries the first fast connection identifier and/or the radio resource configuration information of the user equipment.

Fig. 5 is a signaling flowchart of a fifth embodiment of the method for establishing a connection according to the present invention. In this embodiment, the specific application scenarios are as follows: the user equipment has established a fast connection with the first base station and moved in an idle state into the coverage area of the second base station. As shown in fig. 5, the method of this embodiment may include:

s501, the MME sends a context release command to the first base station.

S502, the first base station sends RRC connection release information to the user equipment.

S503, the first base station sends a user equipment context release completion message to the MME.

Optionally, the context release complete message may also carry a quick connection identifier, that is, the quick connection identifier may be carried in S501 and S502 at the same time, or may be carried in only one of the steps, which is not limited in this embodiment.

The above-described S502 to S503 have no strict timing restrictions.

S504, the MME sends a second context release request to the first base station.

Specifically, the second context release request is used to instruct the first base station to release a pre-stored context of the ue, and the second context release request is sent by the MME to the first base station after receiving a message sent by the second base station that the ue accesses the second base station. In this step, the MME checks through the S-TMSI whether the context of the ue that has accessed the second base station is also stored in another base station, for example, the first base station, if so, the MME sends the second context release request to the first base station to notify the first base station to release the context of the ue.

And S505, the first base station sends a second context release completion message to the MME.

In this embodiment, the method in the first embodiment may be used in the process of initiating, by the ue, connection establishment to the second base station, and after the ue and the second base station successfully establish a connection, the MME may notify the first base station to release the context of the ue because the first base station always stores the context of the ue and occupies resources.

Fig. 6 is a flowchart of a sixth embodiment of the method for establishing a connection according to the present invention. As shown in fig. 6, the execution subject of the method for establishing a connection provided by this embodiment is a user equipment. The method for establishing a connection provided in this embodiment may specifically include:

s601, the user equipment receives a Radio Resource Control (RRC) connection release message sent by the base station, wherein the RRC connection release message carries a first quick connection identifier, and the first quick connection identifier is used for indicating the user equipment to store the context of the user equipment.

Specifically, the RRC connection release message may carry radio resource configuration information of the ue, so that when the ue accesses again, the ue may directly use the radio resource configuration without performing reconfiguration on radio resources through an RRC reconfiguration message, thereby saving signaling overhead.

S602, the user equipment saves the context of the user equipment.

Specifically, the UE may initiate the RRC connection establishment request using a configuration in a context stored by the UE itself, such as a configuration of a certain protocol layer, a configuration of a radio bearer, and the like.

S603, the UE sends an RRC connection establishment request to the base station, wherein the RRC connection establishment request carries the S-TMSI of the UE, so that the base station searches the context of the UE in the contexts of the UEs pre-stored by the base station by using the S-TMSI.

Specifically, one user equipment corresponds to one S-TMSI, so the base station can search the context of the user equipment which is pre-stored and sends the RRC connection establishment request through the S-TMSI.

S604, the UE receives an RRC connection setup message sent by the base station according to the context of the UE, wherein the RRC connection setup message carries a second quick connection identifier.

Specifically, the second quick connection identifier is used to notify the ue to use the pre-saved context of the ue for quick connection.

S605, the ue sends an RRC connection setup complete message to the base station.

In the process of establishing the connection, the GTP tunnel between the ue and the base station and between the ue and the S-GW is maintained all the time, that is, the S1AP connection is not released, but data transmission is not performed, so that the base station does not need to interact with the MME again to establish the GTP tunnel in the process of re-accessing the ue, and thus the S1AP identifier of the ue does not need to be re-allocated, thereby reducing signaling overhead on the network side.

In the process of establishing the connection, if the base station carries the radio resource configuration information of the user equipment when sending the radio resource control RRC connection release message to the user equipment, the base station can directly establish the fast link by using the original DRB configuration when the user equipment is accessed again, thereby saving signaling overhead generated in a new establishment process of the radio bearer.

In the method for establishing a connection provided in this embodiment, the first fast connection identifier is carried in the RRC connection release message to indicate the ue to pre-store the context of the ue, and the S-TMSI of the ue is carried in the RRC connection establishment request sent by the ue to the base station, so that the base station uses the S-TMSI to find the context of the ue in the pre-stored contexts of each ue, and if the context of the ue is found, the second fast identifier is carried in the RRC connection establishment message sent by the base station to the ue to establish a fast connection, thereby reducing signaling overhead generated when the terminal transmits a data packet, and implementing fast establishment of a connection.

On the basis of the foregoing embodiment, before S605, the method may further include: the user equipment determines whether the radio resource of the user equipment meets the data transmission after RRC connection establishment according to the radio resource configuration information of the user equipment, if so, a quick connection indication message is carried in an RRC connection establishment completion message sent by the user equipment to a base station, and the quick connection indication message is used for indicating that the stored radio resource configuration information, such as radio resource configuration, safety configuration and the like, can be used between the user equipment and the base station without radio link reconfiguration; and if not, the user equipment does not carry the quick connection indication message in the RRC connection establishment completion message sent to the base station.

In the method for establishing a connection provided in this embodiment, the ue stores the context of the ue in advance by carrying the quick connection identifier in the RRC connection release message, and determines whether the radio resource of the ue satisfies data transmission after RRC connection establishment, and if so, carries the quick connection indication message in the RRC connection establishment completion message to indicate that a link between the ue and the base station does not need to be reestablished, so that the ue performs quick connection using the pre-stored context of the ue, which reduces signaling overhead generated when the terminal transmits a data packet, and implements quick establishment of connection.

The application scenario of this embodiment is as follows: after the connection between the base station and the user equipment is released, the base station stores the context of the user equipment, when the user equipment sends an RRC connection reestablishment request to the base station, the C-RNTI used in the RRC connection state before is carried in the request, and the base station searches the context of the user equipment according to the C-RNTI to reestablish the RRC connection, namely, under the scene, the base station does not allocate the C-RNTI to other user equipment to use and occupy network resources. The method for establishing connection provided by the embodiment can solve the above problems, so as to realize quick establishment of connection. The method provided by the embodiment may be: the method also includes that the RRC connection release message sent by the base station to the user equipment carries the timing time, and the method further includes: the user equipment starts a timer, and releases or deletes the context of the first user equipment after the timer is overtime.

It should be noted that, if the ue leaves the coverage of the base station before the timer expires, the ue sets the timer to expire and releases or deletes the context of the ue.

Specifically, when the ue accesses again, the base station searches for the context of the ue according to the C-RNTI, so that the C-RNTI of the ue is always maintained during this process, and the base station does not allocate the C-RNTI to other ues, so that the timing time carried in the RRC connection release message sent by the base station to the ue may be used to instruct the ue to maintain the context of the ue before the timing time expires, including maintaining the C-RNTI, the DRB configuration, and the like of the ue, and instruct the ue to release or delete the stored context of the ue after the timing time expires and without initiating reconnection of the ue.

In the method for establishing a connection provided in this embodiment, the timing time is carried in the RRC connection release message to indicate the ue to maintain the context of the ue before the timing time is over, so that the base station searches the context of the ue according to the C-RNTI of the ue to establish a fast connection, thereby reducing signaling interaction between the ue and the network side, reducing signaling overhead generated when the terminal transmits a data packet, and implementing fast establishment of a connection.

Fig. 7 is a schematic structural diagram of a base station according to a first embodiment of the present invention. As shown in fig. 7, the base station 10 provided in this embodiment may include: the device comprises a sending module 11, a receiving module 12, a searching module 13 and a storage module 14.

The sending module 11 is configured to send an RRC connection release message to the user equipment, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to indicate that the first base station stores a context of the user equipment.

Specifically, the first fast connection identifier is used to indicate the ue to store a context of the ue, where the context of the ue includes radio resource configuration information of the ue, so that when the ue accesses again, the ue can directly use the radio resource configuration to establish a fast connection without performing reconfiguration on radio resources through an RRC reconfiguration message, which can save signaling overhead.

The receiving module 12 is configured to receive an RRC connection establishment request sent by a user equipment, where the RRC connection establishment request carries an S-TMSI of the user equipment.

A storage module 14, configured to store a context of each user equipment;

a searching module 13, configured to search, by using the S-TMSI received by the receiving module 12, a context of each user equipment in the contexts of the user equipments stored in the storage module 14;

the sending module 11 is further configured to send an RRC connection establishment message to the UE if the searching module 13 finds the context of the UE, where the RRC connection establishment message carries a second quick connection identifier, and the second quick connection identifier is used to notify the UE to perform quick connection using the context of the UE that is stored in advance.

The receiving module 12 is configured to receive an RRC connection setup complete message sent by the user equipment.

Further, if the sending module 11 carries the radio resource configuration information of the user equipment when sending the RRC connection release message to the user equipment, the original DRB configuration can be directly used when the user equipment accesses again, thereby saving signaling overhead generated in the new establishment process of the radio bearer.

The base station of this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 1, and the implementation principle and the technical effect are similar, which are not described herein again.

On the basis of the foregoing embodiment, in the base station 10 provided in this embodiment, the receiving module 12 is further configured to receive a first fast connection request message sent by an MME. Optionally, the first fast connection request message carries a first fast connection identifier and an S-TMSI of the UE, where the first fast connection request message may be a UE context release message or an added S1AP message, and specifically, the S1AP message may be defined as a UE fast connection request, a UE fast connection command, and a UE fast connection completion message, and may also be defined as a UE context hold request, a UE context hold command, and a UE context completion message, which is not limited in this embodiment.

The sending module 11 is configured to send a first fast connection response message to the MME after the base station 10 receives the first fast connection request message sent by the MME. Optionally, the first quick connection response message may carry a first quick connection identifier to instruct the base station 10 to store the context of the user equipment.

Or, on the basis of the foregoing embodiment, in the base station 10 provided in this embodiment, the sending module 11 is configured to send a second fast connection request message to the MME, and optionally, the second fast connection request message carries the first fast connection identifier, where the second fast connection request message may be a user equipment context release message or may be a newly added S1AP message, and specifically, the S1AP message may be a UE fast connection request, a UE fast connection command, and a UE fast connection completion message, or may be a UE context maintenance request, a UE context maintenance command, and a UE context completion message, which is not limited in this embodiment.

The receiving module 12 is configured to receive a second quick connection response message sent by the MME, and optionally, the second quick connection response message may carry the S-TMSI of the user equipment.

Further, the first fast connection request message sent by the sending module 11 or the second fast connection response message received by the receiving module 12 may also carry radio resource configuration information of the user equipment, where the radio resource configuration information of the user equipment may be used for the user equipment to communicate with the base station;

further, the RRC connection release message sent by the sending module 11 may also carry radio resource configuration information of the user equipment.

The base station of this embodiment may be configured to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.

Further, in the second embodiment of the base station of the present invention, the RRC connection release message may also carry a timing time, which is used to instruct the ue to release or delete the context of the ue stored in the ue after a timer corresponding to the timing time expires.

The base station provided in this embodiment may further include a timing module and a context release module,

The sending module 11 is further configured to send a first context release request to the MME after the timing module times out, where the first context release request is used to request the MME to release a context of the user equipment that is pre-stored.

Further, the receiving module 12 may be further configured to, before sending the RRC connection release message to the user equipment, if the user equipment is handed over from the second base station to the base station, receive a handover request message sent by the second base station in a handover process, where the handover request message includes the S-TMSI; or, in the switching process, receiving the S-TMSI sent by the MME.

Further, the receiving module 12 may specifically be configured to receive the S-TMSI sent by the MME as follows:

receiving a handover request message sent by the MME, wherein the handover request message includes the S-TMSI, and the S-TMSI is obtained by the MME through a handover request (handover request) message received from the second base station.

The base station of this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 2, and the implementation principle and the technical effect are similar, which are not described herein again.

The base station provided in this embodiment may further include a paging module.

The sending module 11 is further configured to send the RRC connection release message to a second user equipment;

the receiving module 12 is configured to receive downlink data sent by a core network; the paging module is used for paging user equipment; the sending module 11 is configured to send a transmission failure message to the MME if the paging module fails to page the ue, so that the MME pages the ue.

The base station of this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 3, and the implementation principle and the technical effect are similar, which are not described herein again.

On the basis of the foregoing embodiment, in the base station provided in this embodiment, the receiving module 12 is configured to receive a second context release request sent by the MME, where the second context release request is used to instruct the base station to release a context of the user equipment that is saved in advance.

Fig. 8 is a schematic structural diagram of a ue according to a first embodiment of the present invention. As shown in fig. 8, the user equipment 20 provided in this embodiment may include: a receiving module 21, a storage module 22 and a transmitting module 23.

The receiving module 21 is configured to receive an RRC connection release message sent by the base station, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to instruct the user equipment to store a context of the user equipment; the storage module 22 is used for saving the context of the user equipment; the sending module 23 is configured to send an RRC connection establishment request to the base station, where the RRC connection establishment request carries an S-TMSI of the user equipment, so that the base station searches for a context of the user equipment in contexts of the user equipment that are pre-stored in the base station by using the S-TMSI.

The receiving module 21 is further configured to receive an RRC connection setup message sent by the base station according to the context of the ue, where the RRC connection setup message carries the second quick connection identifier.

The sending module 23 is further configured to send an RRC connection setup complete message to the base station.

Further, the RRC connection release message received by the receiving module 21 may also carry radio resource configuration information of the ue, so as to perform fast connection.

The user equipment of this embodiment may be configured to execute the technical solution of the method embodiment shown in fig. 6, and the implementation principle and the technical effect are similar, which are not described herein again.

On the basis of the foregoing embodiment, the user equipment 20 provided in this embodiment may further include a determining module 24, configured to determine whether its own radio resource satisfies data transmission after RRC connection establishment according to the radio resource configuration information; if the determining module 24 determines that the radio resource meets the data transmission after the RRC connection is established, the sending module 23 sends an RRC connection establishment complete message to the base station, where the RRC connection establishment complete message carries fast connection indication information, where the fast connection indication information is used to indicate that stored radio resource configuration information, such as radio resource configuration and security configuration, can be used between the user equipment and the base station, and radio link reconfiguration is not required.

The user equipment of this embodiment may be configured to execute the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, which are not described herein again.

The ue provided in this embodiment may also carry timing time in the RRC connection release message received by the receiving module 21;

the user equipment further comprises:

a timing module for starting a timer corresponding to the timing time;

and the releasing module is used for releasing or deleting the saved context of the first user equipment after the timer of the timing module is overtime.

Fig. 9 is a schematic structural diagram of a base station according to a second embodiment of the present invention. As shown in fig. 9, the base station 30 provided in this embodiment may include: a transmitter 31, a receiver 32, a processor 33 and a memory 34.

The transmitter 31 may be configured to send an RRC connection release message to the user equipment, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to indicate that the base station of the user equipment stores a context of the user equipment;

the receiver 32 may be configured to receive an RRC connection establishment request sent by the user equipment, where the RRC connection establishment request carries an S-TMSI of the user equipment;

the memory 34 may be used to maintain the context of the respective user device;

the processor 33 may be configured to use the S-TMSI received by the receiver 32 to look up the context of the user equipment in the context of the respective user equipment stored in the memory 34;

the transmitter 31 is further configured to carry a second fast connection identifier when sending the RRC connection setup message to the UE if the processor 33 finds the context of the UE, where the second fast connection identifier is used to notify the UE to perform fast connection using the context of the UE that is stored in advance;

the receiver 32 is configured to receive an RRC connection setup complete message sent by the user equipment.

The receiver 32 is further configured to receive a first fast connection request message sent by the MME, where the first fast connection request message carries a first fast connection identifier and an S-TMSI of the user equipment; the transmitter 31 is further configured to transmit a first quick connection response message to the MME; or,

the sender 31 is further configured to send a second fast connection request message to the MME, where the second fast connection request message carries the first fast connection identifier; the receiver 32 is further configured to receive a second quick connection response message sent by the MME, where the second quick connection response message carries the S-TMSI of the user equipment.

Preferably, the first quick connection request message sent by the sender 31 or the second quick connection response message received by the receiver 32 may also carry radio resource configuration information of the user equipment, where the radio resource configuration information of the user equipment may be used for the user equipment to communicate with the base station.

Preferably, the RRC connection release message sent by the transmitter 31 may also carry radio resource configuration information of the user equipment, where the radio resource configuration information is used for the first user equipment to communicate with the first base station.

The base station provided in this embodiment may further carry a timing time in the RRC connection release message, where the timing time is used to instruct the ue to release or delete the context of the ue stored in the ue after a timer corresponding to the timing time expires.

The processor 33 is configured to start a timer corresponding to the timing time when the transmitter 31 transmits the RRC connection release message; and releasing or deleting the context of the first user equipment which is saved in advance after the timing time is overtime.

The above-mentioned transmitter 31 may also be configured to send a first context release request to the MME after the timer expires, where the first context release request is used to request the MME to release a context of the pre-stored user equipment.

Further, the base station is a first base station;

the receiver 32 is further configured to, before sending the RRC connection release message to the user equipment, receive a handover request message sent by the second base station in a handover process if the user equipment is handed over from the second base station to the first base station, where the handover request message includes the S-TMSI; or, in the switching process, receiving the S-TMSI sent by the MME.

The receiver 32 is specifically configured to receive the S-TMSI sent by the MME as follows:

Of course, the S-TMSI may also be in the context of the user equipment stored in the memory 34.

In the base station provided in this embodiment, the receiver 32 may also be configured to receive downlink data sent by a core network; the above-mentioned transmitter 31 can also be used for paging the user equipment; the transmitter 31 may be configured to send a transmission failure message to the MME if paging the user equipment fails, so that the MME pages the user equipment.

In the base station provided in this embodiment, the receiver 32 may be configured to receive a second context release request sent by the MME, where the second context release request is used to instruct the base station to release a context of the user equipment that is stored in advance.

Fig. 10 is a schematic structural diagram of a second ue embodiment of the present invention. As shown in fig. 10, the user equipment 40 provided in this embodiment may include: a receiver 41, a memory 42, a transmitter 43 and a processor 44.

The receiver 41 may be configured to receive an RRC connection release message sent by the base station, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to indicate to store a context of the user equipment;

the memory 42 may be used to save the context of the user device.

The processor 44 may be configured to instruct the memory 42 to save the context of the user equipment according to the first quick connection identifier carried in the RRC connection release message received by the receiver 41;

the transmitter 43 may be configured to send an RRC connection establishment request to the base station, where the RRC connection establishment request carries an S-TMSI of the user equipment, so that the base station searches for a context of the user equipment in contexts of the user equipment that are pre-stored in the base station by using the S-TMSI; the transmitter may be further configured to transmit an RRC connection setup complete message to the base station;

the receiver 41 is further configured to receive an RRC connection setup message sent by the base station according to the context of the ue, where the RRC connection setup message carries a second quick connection identifier;

the transmitter 43 is also configured to transmit an RRC connection setup complete message to the base station.

Further, the RRC connection release message received by the receiver 41 may also carry radio resource configuration information of the user equipment, where the radio resource configuration information is used for the first user equipment to communicate with the first base station.

On the basis of the foregoing embodiment, in the user equipment 40 provided in this embodiment, the processor 44 may be further configured to determine whether the radio resource satisfies data transmission after RRC connection establishment according to the radio resource configuration information; if the processor 44 determines that the radio resource meets the data transmission after the RRC connection is established, the RRC connection establishment complete message sent by the sender 43 to the base station carries fast connection indication information, where the fast connection indication information is used to indicate that the stored radio resource configuration information, such as radio resource configuration and security configuration, can be used between the user equipment and the base station, and radio link reconfiguration is not required.

The ue provided in this embodiment may carry a timing time in the RRC connection release message received by the receiver 41;

the processor 44 is further configured to start a timer corresponding to the timing time, and release or delete the context of the user equipment stored in the memory 42 after the timer expires.

Fig. 11 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 50 is a first base station comprising:

a transmitter 51, configured to send a radio resource control, RRC, connection release message to a user equipment, where the RRC connection release message carries a first fast connection identifier, and the first fast connection identifier is used to indicate that the first base station of the user equipment stores a context of the user equipment;

a memory 52 for storing a context of the user equipment;

a receiver 53, configured to receive a second context release request sent by a mobility management entity MME, where the second context release request is used to instruct the base station to release a context of the user equipment, and the second context release request is sent by the MME to the first base station after receiving a message sent by the second base station that the user equipment accesses the second base station;

a processor 54, configured to release the context of the user equipment stored in the memory 52 after the receiver 53 receives the second context release request.

Fig. 12 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 60 includes:

a transmitter 61, configured to send a radio resource control, RRC, connection release message to a user equipment, where the RRC connection release message carries a fast connection identifier, and the fast connection identifier is used to indicate that the base station of the user equipment stores a context of the user equipment;

a receiver 62, configured to receive downlink data sent by a core network;

a processor 63, configured to control the transmitter 61 to page the ue after the receiver 62 receives the downlink data, and if paging of the ue fails, control the transmitter 61 to transmit a transmission failure message to the MME, so that the MME pages the ue.

Fig. 13 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 70 includes:

a transmitter 71 for transmitting a radio resource control, RRC, connection release message to the user equipment;

a memory 72 for storing a context of the user equipment;

a processor 73, configured to control the transmitter 71 to transmit a radio resource control, RRC, connection release message to the ue, and start a timer, where the RRC connection release message carries a timing time of the timer, and the RRC connection release message is used to instruct the ue to release or delete a context of the ue after the timing time is expired; releasing or deleting the context of the user equipment stored in the memory 72 after the timer expires.

In a first possible implementation form of the fifteenth aspect,

the processor 73 is further configured to control the transmitter 71 to transmit a context release request to the mobility management entity MME after the timing time expires, where the context release request is used to request the MME to release the context of the user equipment.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for establishing a connection, comprising:

the first base station searches the context of the first user equipment in the contexts of the user equipment pre-stored by the first base station by using the S-TMSI, and if the context exists, the first base station sends an RRC connection establishment message to the first user equipment, wherein the RRC connection establishment message carries a second quick connection identifier, and the second quick connection identifier is used for informing the first user equipment of using the pre-stored context of the first user equipment to carry out quick connection;

2. The method of claim 1, wherein before the first base station sends the RRC connection release message to the first user equipment, the method further comprises:

3. The method according to claim 2, wherein the first quick connection request message or the second quick connection response message further carries: the radio resource configuration information of the first user equipment is used for the first user equipment to communicate with the first base station.

4. The method according to any of claims 1-3, wherein the RRC connection Release message further carries: radio resource configuration information of the first user equipment, the radio resource configuration information being used for the fast connection.

5. The method according to any of claims 1-4, wherein the RRC connection release message further carries a timing time, which is used to instruct the first user equipment to release or delete the context of the first user equipment saved by the first user equipment after a timer corresponding to the timing time expires.

6. The method of claim 5, further comprising:

7. The method of claim 5 or 6, further comprising:

8. The method according to any of claims 1-7, wherein before the first base station sends the radio resource control, RRC, connection release message to the first user equipment, the method further comprises:

in a switching process, the first base station receives a handover request message sent by the second base station, wherein the handover request message comprises the S-TMSI; or

9. The method of claim 8, wherein the first base station receives the S-TMSI sent by the MME, comprising:

10. The method according to any one of claims 1-9, further comprising:

the first base station receives downlink data sent by a core network;

the first base station pages the second user equipment;

11. A method for establishing a connection, comprising:

the user equipment saves the context of the user equipment;

12. The method according to claim 11, wherein the RRC connection release message further carries: radio resource configuration information of the user equipment, the radio resource configuration information being used for the user equipment to communicate with the base station.

13. The method of claim 12, wherein before the ue sends the RRC connection setup complete message to the base station, the method further comprises:

14. The method according to any of claims 11-13, wherein the RRC connection release message further carries a timing time;

15. A base station, comprising:

the storage module is used for storing the context of each user equipment;

16. The base station of claim 15,

the receiving module is configured to receive a first fast connection request message sent by a mobility management entity MME, where the first fast connection request message carries the first fast connection identifier and the S-TMSI of the first user equipment; the sending module is configured to send a first quick connection response message to the MME; or,

17. The base station of claim 16, wherein the first fast connection request message sent by the sending module or the second fast connection response message received by the receiving module further carries: the radio resource configuration information of the first user equipment is used for the first user equipment to communicate with the first base station.

18. The base station of claim 16, wherein the RRC connection release message sent by the sending module further carries: the radio resource configuration information of the first user equipment, where the radio resource configuration information is used for the first user equipment to communicate with the first base station.

19. The base station according to any of claims 15 to 18, wherein the RRC connection release message further carries a timing time, which is used to instruct the first user equipment to release or delete the context of the first user equipment saved by the first user equipment after a timer corresponding to the timing time expires.

20. The base station of claim 19, further comprising:

21. The base station according to claim 19 or 20,

the sending module is further configured to send a first context release request to the MME after the timer expires, where the first context release request is used to request the MME to release a context of the first user equipment that is pre-saved.

22. The base station of any of claims 15-21, wherein the base station is a first base station;

the receiving module is further configured to receive a handover request message sent by a second base station in a handover process if the first user equipment is handed over from the second base station to the first base station before sending the RRC connection release message to the first user equipment, where the handover request message includes the S-TMSI; or, in the switching process, receiving the S-TMSI sent by the MME.

23. The base station of claim 22, wherein the receiving module is specifically configured to receive the S-TMSI sent by the MME as follows:

24. The base station according to any of the claims 15 to 23,

the sending module is further configured to send the RRC connection release message to a second user equipment;

a paging module, configured to page a second user equipment;

25. A user device, comprising:

a storage module, configured to store a context of the user equipment according to the first quick connection identifier received by the receiving module;

26. The ue of claim 25, wherein the RRC connection release message received by the receiving module further carries: radio resource configuration information of the user equipment, the radio resource configuration information being used for the user equipment to communicate with the base station.

27. The user equipment of claim 26, further comprising:

if the determining module determines that the radio resource meets the data transmission after the RRC connection is established, the sending module sends, to the base station, an RRC connection establishment completion message in which fast connection indication information is carried, where the fast connection indication information is used to indicate that the stored radio resource configuration information can be used between the user equipment and the base station, and radio link reconfiguration is not required.

28. The UE of any one of claims 25 to 27, wherein the RRC connection release message received by the receiving module further carries a timing time;

the user equipment further comprises:

a starting module for starting a timer corresponding to the timing time;