WO2010121431A1

WO2010121431A1 - Method, device and system for redirecting

Info

Publication number: WO2010121431A1
Application number: PCT/CN2009/071434
Authority: WO
Inventors: 陈燕燕; 冯莉; 郑潇潇
Original assignee: 华为技术有限公司
Priority date: 2009-04-23
Filing date: 2009-04-23
Publication date: 2010-10-28
Also published as: CN102017772A; CN102017772B

Abstract

One embodiment of the present invention discloses a method, a device and a system for redirecting which relate to the communication technical field. The method for redirecting includes: sending a radio resource control connection request which carrying frequency band capability information to a UTRAN; receiving a radio resource control connection rejection message which carrying an access frequency sent from the UTRAN; selecting a cell access network according to the access frequency. The embodiment of the present invention improves the success probability of redirection and decreases the time relay of UE accessing network.

Description

Method, device and system for redirection

The present invention relates to the field of communications technologies, and in particular, to a method, apparatus, and system for redirecting. Background technique

In the field of the wireless communication technology, a UE (User Equipment) in a cell accesses a wireless network through establishing an RRC (radio resource control) connection, and the network side is based on a load or a service type. The RRC CONNECTION REJECT message indicates that the UE initiates the access procedure at other frequencies or systems, which is the redirection process of the RRC connection setup phase.

In the redirection technology of the existing RRC connection establishment phase, when the network side specifies the access frequency or system for the UE, the network side does not know the frequency band capability information supported by the UE, and thus the frequency indicated by the network side may not be supported by the UE. Happening. According to the existing redirection technology, if the frequency indicated by the network side is not supported by the UE, the UE cannot find a suitable cell to camp on the frequency and initiate the access network process, then the UE must wait for a longer delay and then Other frequencies initiate the process of accessing the network. Therefore, there is a problem that the success rate of the redirection is low and the UE access delay is long.

Summary of the invention

The embodiment of the invention provides a method, a device and a system for redirection, which improves the success rate of redirection and reduces the delay of UE access.

To achieve the above objective, the embodiment of the present invention adopts the following technical solutions:

An embodiment of the present invention provides a method for redirecting, including:

Sending a radio resource control connection request to the global terrestrial radio access network, where the radio resource control connection request carries frequency band capability information;

Receiving, by the global terrestrial radio access network, a radio resource control connection reject message, where the radio resource control connection reject message carries an access frequency determined according to the frequency band capability information carried in the radio resource control connection request; Selecting a cell access network according to the access frequency.

Receiving, by the user equipment, a radio resource control connection request, where the radio resource control connection request carries frequency band capability information;

Determining an access frequency of the user terminal according to the frequency band capability information;

And sending a radio resource control connection reject message to the user terminal, where the radio resource control connection reject message carries an access frequency.

Transmitting a radio resource control connection request to the global terrestrial radio access network;

Receiving, by the global terrestrial radio access network, a radio resource control connection reject message, where the radio resource control connection reject message carries an access frequency;

When the access frequency is supported, the cell access network is selected according to the access frequency.

An embodiment of the present invention provides a device for redirecting, including:

a request generating module, configured to generate a radio resource control connection request carrying frequency band capability information, where the first sending module is configured to send the radio resource control connection request to the global terrestrial radio access network;

a first receiving module, configured to receive a radio resource control connection reject message sent by the global terrestrial radio access network, where the radio resource control connection reject message carries the radio resource control connection request sent by the first sending module Access frequency determined by the band capability information;

An access module, configured to select a cell to access the access network according to the access frequency.

a second receiving module, configured to receive a radio resource control connection request sent by the user terminal, where the radio resource control connection request carries frequency band capability information;

a frequency determining module, configured to determine, according to the frequency band capability information, an access frequency of the user terminal; a second sending module, configured to send a radio resource control connection reject message to the user terminal, where the radio resource control connection reject message carries Access frequency. An embodiment of the present invention provides a device for redirecting, including:

a third sending module, configured to send a radio resource control connection request to the global terrestrial radio access network; a third receiving module, configured to receive a radio resource control connection reject message sent by the global terrestrial radio access network, where the radio resource control The connection rejection message carries an access frequency;

And a processing module, configured to select a cell access network according to the access frequency when the access frequency is supported.

The technical solution provided by the embodiment of the present invention, by carrying the frequency band capability information of the UE in the RRC connection request, so that the UTRAN can specify the appropriate access frequency for the UE according to the RRC connection request, or the RRC connection request does not carry the frequency band capability information of the UE. When the UE determines that the access frequency specified by the UTRAN is not supported, the UE does not access the access frequency, but directly initiates the process of accessing the network at other frequencies, thereby improving the success rate of the redirection and reducing the success rate. The delay of UE access.

DRAWINGS

FIG. 1 is a flowchart of a method for redirecting according to an embodiment of the present invention;

2 is a flowchart of a method for redirecting according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for redirecting according to an embodiment of the present invention;

FIG. 4 is a flowchart of a method for redirecting according to an embodiment of the present invention;

FIG. 5 is a structural diagram of a device for redirecting according to an embodiment of the present invention;

FIG. 6 is a structural diagram of a redirection device according to an embodiment of the present invention;

FIG. 7 is a structural diagram of a device for redirecting according to an embodiment of the present invention;

FIG. 8 is a structural diagram of a device for redirecting according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a redirection system according to an embodiment of the present invention;

FIG. 10 is a flowchart of a method for redirecting according to an embodiment of the present invention;

FIG. 11 is a flowchart of a method for redirecting according to an embodiment of the present invention;

FIG. 12 is a flowchart of a method for redirecting according to an embodiment of the present invention;

FIG. 13 is a flowchart of a method for redirecting according to an embodiment of the present invention;

FIG. 14 is a structural diagram of a redirection device according to an embodiment of the present invention; FIG. 15 is a structural diagram of a redirection device according to an embodiment of the present invention; FIG. 16 is a structural diagram of a redirection device according to an embodiment of the present invention;

FIG. 17 is a structural diagram of a device for redirecting according to an embodiment of the present invention;

FIG. 18 is a schematic diagram of a redirection system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 1, the redirection method provided by the embodiment of the present invention includes:

101. Send a radio resource control connection request to the UTRAN, where the radio resource control connection request carries frequency band capability information.

When the UE is to be connected to the UMTS (Universal Mobile Communication System), it first sends an RRC connection request to the UTRAN, and prepares to establish an RRC connection, which is carried in the RRC connection request. The frequency band capability information of the UE may be the frequency range supported by the UE, or may be a frequency range not supported by the UE.

102. Receive a radio resource control connection reject message sent by the UTARAN, where the radio resource control connection reject message carries an access frequency determined according to the frequency band capability information carried in the radio resource control connection request.

When the UTRAN determines that the access of the UE needs to be redirected, it sends a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries the access specified for the UE redirection. Frequency, because the UTRAN has previously obtained the band capability information of the UE from the RRC connection request sent by the UE, therefore, the frequency supported by the UE may be selected as the access frequency of the UE;

The UE receives the radio resource control connection reject message, and the reject message carries an access frequency designated by the UTRAN. 103. Select a cell access network according to the access frequency.

After receiving the RRC connection reject message, the UE selects an appropriate cell to access the UMTS network according to the access frequency it carries.

In the redirection method provided by the embodiment of the present invention, the UE carries the frequency band capability information of the UE in the RRC RAN connection request, so that the UTRA can know the frequency range supported by the UE, thereby designating appropriate access for the UE. The frequency is increased, so the success rate of the redirection is improved, and the delay of the UE access is reduced. In addition, the technical solution can be applied not only to the redirection method but also to the interaction process between other UEs and the network side, such as DRD. (D i rec t Re t ry Dec isi on ), that is, when the UE sends a connection request to the network side, The frequency range supported by the UE avoids the UE being instructed to establish synchronization on the inter-frequency cell that it does not support, thereby improving the success rate of the DRD operation.

As shown in FIG. 2, a redirection method provided by an embodiment of the present invention includes:

201. Receive a radio resource control connection request sent by a user terminal, where the radio resource control connection request carries frequency band capability information.

The UTRAN receives the radio resource control connection request sent by the UE, where the radio resource control connection request carries the frequency band capability information, where the frequency band capability information may be a frequency range supported by the UE, or may be a frequency range not supported by the UE. .

202. Determine, according to the frequency band capability information, an access frequency of the user terminal.

The UTRAN determines whether the access of the UE needs to be redirected according to the radio resource control connection request sent by the UE and the current network status. When the redirection is required, determining the access frequency of the UE according to the frequency band capability information. And if the frequency band capability information is a frequency range supported by the UE, the UTRAN selects a frequency in the frequency range as the access frequency of the UE; if the frequency band capability information is a frequency range that is not supported by the UE, the UTRAN The selection frequency outside the frequency range is designated as the access frequency of the UE.

203. Send a radio resource control connection reject message to the user terminal, where the radio resource control connection reject message carries an access frequency. After determining the access frequency, the access frequency is carried in the radio resource control connection reject message, and the radio resource control connection reject message is sent to the UE.

The redirection method provided by the embodiment of the present invention, by carrying the radio frequency capability information of the UE in the radio resource control connection request sent by the UE, enables the UTRA to know the frequency range supported by the UE, thereby designating an appropriate access frequency for the UE. Therefore, the success rate of the redirection is improved, and the delay of the UE access is reduced.

The foregoing embodiment is mainly applied to a scenario in which redirection is performed inside a UMTS network. When the area where the UE is located is an area covered by the UMTS network and other networks, such as LTE (Long Term Evolution), since the LTE network itself has higher spectrum utilization and transmission speed, it is for the UE. In some cases, the experience of the user is obviously better than that of the UMTS network. In this case, in order to provide a better service experience for the user, the UMTS often needs to redirect the UE to the LTE network. As shown in FIG. 3, the embodiment of the present invention provides a method for redirection. In order to describe the redirection method more clearly, the UE is located in the UMTS network and the LTE network. The area, and the case where the UE supports the LTE network, is described. However, it should be noted that the method of the redirection shown in FIG. 3 can also be applied to other situations, and the present invention is not limited thereto.

301. Send a radio resource control connection request to the UTRAN, where the radio resource control connection request carries the frequency band capability information and the network identifier of the UE support network.

When the UE is to be connected to the UMTS, it first sends an RRC connection request to the UTRAN, and prepares to establish an RRC connection, where the RRC connection request carries the frequency band capability information of the UE and the network identifier of the support network; when the UE is located in the UMTS network When the UE supports the LTE network, and the UE supports the LTE network, the network identifier of the support network may be an LTE network identifier, and the frequency band capability information may be a frequency range supported by the UE in the LTE network, or A frequency range that is not supported in an LTE network.

302. Receive a radio resource control connection reject message sent by the UTRAN, where the radio resource control connection reject message carries an access frequency and an access network identifier. When the UTRAN determines that the access of the UE needs to be redirected to the LTE network, the RRC sends a RRC connection reject message to the UE, where the RRC connection reject message carries a redirection request for the UE. In the embodiment of the present invention, the access network identifier is an LTE network identifier, and the UTRAN has previously obtained the frequency band capability information of the UE from the radio resource control connection request sent by the UE. LTE network identifier, therefore, the frequency supported by the UE in the LTE network may be selected as the access frequency of the UE;

The UE receives the radio resource control connection reject message, and the reject message carries an access frequency and an LTE network identifier designated by the UTRAN.

303. Select, according to the access frequency and the access network identifier, a cell to access the access network.

After receiving the radio resource control connection reject message, the UE selects an appropriate cell to access the LTE network according to the access frequency and the LTE network identifier carried by the UE.

As shown in FIG. 4, an embodiment of the present invention provides a redirection method, including:

401. Receive a radio resource control connection request sent by the UE, where the radio resource control connection request carries the frequency band capability information and the network identifier of the UE support network.

The UTRAN receives the RRC connection request sent by the UE, where the RRC connection request carries the band capability information and the network identifier of the UE support network. In this embodiment of the present invention, the network identifier of the UE support network is LTE. The network identifier, the frequency band capability information may be a frequency range supported by the UE in the LTE network, or may be a frequency range not supported by the UE in the LTE network.

402. Determine, according to the frequency band capability information and a network identifier of the user terminal support network, an access frequency and an access network identifier of the user terminal.

The UTRA determines whether the access of the UE needs to be redirected according to the radio resource control connection request sent by the UE and the current network status. In the embodiment of the present invention, when the UE needs to be redirected to the LTE network, The LTE network identifier is an access network identifier, and the access frequency of the UE in the LTE network is determined according to the frequency band capability information and the LTE network identifier; if the frequency band capability information is a frequency range supported by the UE in the LTE network And the UTRAN selects the frequency in the frequency range as the access frequency of the UE; if the frequency band capability information is that the UE does not in the LTE network For the supported frequency range, the UTRAN selects the frequency outside the frequency range as the access frequency of the UE.

403. Send a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries an access frequency and an access network identifier.

After determining the access frequency, the access frequency and the access network identifier are carried in the radio resource control connection reject message, and the radio resource control connection reject message is sent to the UE.

The redirection method provided by the embodiment of the present invention, by carrying the radio frequency capability information of the UE and the identifier of the supported network in the radio resource control connection request sent by the UE, enables the UTRA to know the designated access frequency, thereby improving The success rate of the redirection reduces the delay of UE access.

An embodiment of the present invention provides a redirection method, where a UE sends a radio resource control connection request to a UTRAN, where the radio resource control connection request carries frequency band capability information of the UE in a UMTS network, and the UE supports The network identifier of the other network and the frequency band capability information of the UE in the other network, where the frequency band capability information may be a frequency range supported by the UE, or may be a frequency range not supported by the UE;

After receiving the RRC connection request, the UTRAN may refer to the RRC connection request and the current network status, determine whether to redirect the access of the UE, and determine which to redirect the UE to. Network and frequency, that is, when the UE needs to be redirected in the UMTS network, the UTRA determines the access frequency of the UE redirection according to the frequency band capability information of the UE in the UMTS network carried in the RRC connection request. And the access frequency is carried in the RRC connection reject message; when the UE needs to be redirected to the other network, the UTRAN controls the network of the other network supported by the UE that is carried in the connection request according to the RRC resource Identifying the frequency band capability information of the UE and the UE in the other network, determining the access network identifier and the access frequency redirected by the UE, and carrying the access network identifier and the access frequency in the radio resource control connection reject message; Afterwards, sending the radio resource control connection reject message to the UE;

After receiving the radio resource control connection reject message, the UE according to the access frequency carried by the UE or Access frequency and access network identity, re-access to the UMTS network or the access network.

The redirection method provided by the embodiment of the present invention carries the frequency band capability information of the UE in the UMTS network, and the network identifier of the other network supported by the UE, and the UE in the other by using the radio resource control connection request sent by the UE. The frequency band capability information in the network enables the UTRAN to know the appropriate access frequency, thus improving the success rate of the redirection and reducing the delay of the UE access.

The embodiment of the present invention further provides a redirection method, where a neighbor list and/or a neighbor list are set on both sides of the UE and the UTRAN, and the UE sends a radio resource control connection request according to the neighbor list and And the neighboring frequency point list is used to determine the frequency band capability information. For example, if there is no frequency band that the UE does not support in the neighboring cell list or/and the adjacent frequency point list, the UE does not need to carry the frequency band capability information in the RRC connection request; or The UE uses the frequency range supported by the UE in the neighbor list and/or the adjacent frequency list or the unsupported frequency range as the frequency band capability information, and carries the frequency band capability information in the radio resource control connection dependency.

After receiving the RRC connection request, the UTRAN determines an access frequency for the UE according to the neighbor list and/or the neighbor list and the band capability information carried in the RRC connection request, for example, If the RRC connection request does not carry the band capability information, the UTRAN selects a frequency from the neighbor list and/or the neighbor list as the access frequency of the UE; or, according to the radio resource control connection The frequency band capability information carried in the request determines the frequency range supported by the UE in the neighbor list and/or the neighbor frequency list, and the selected frequency is carried in the radio resource control connection reject message as the access frequency of the UE.

The other technical means of the embodiments of the present invention are the same as the foregoing embodiments, and are not described here. In the embodiment of the present invention, a neighbor list and/or a neighbor list are set on both sides of the UE and the UTRAN, and according to The neighboring cell list and/or the neighboring cell list determine the band capability information of the UE, thereby reducing the number of bits occupied by the band capability information in the RRC connection request, and saving system resources.

In addition, the technical solution proposed by the embodiment of the present invention can be applied not only to the redirection method, but also It can be applied to the interaction process between other UEs and the network side, for example, a DRD (Di rec t Ret ry Dec is ion) process, that is, when the UE sends a connection request to the network side, the connection request carries the UE. The frequency band capability information enables the network side to know the frequency range supported by the UE, and prevents the UE from being instructed to establish synchronization on the inter-frequency cell that it does not support, thereby improving the success rate of the DRD operation.

As shown in FIG. 5, an embodiment of the present invention provides a redirection device, including:

The request generating module 501 is configured to generate a radio resource control connection request carrying the capability information of the frequency band;

The first sending module 502 is configured to send, by the global terrestrial radio access network, the radio resource control connection request generated by the request generating module 501, where the radio resource control connection request carries frequency band capability information; The frequency range supported by the UE may also be a frequency range that is not supported by the UE;

The first receiving module 503 is configured to receive a radio resource control connection reject message sent by the global terrestrial radio access network, where the radio resource control connection reject message carries an access frequency;

The access module 504 is configured to select, according to the access frequency carried in the radio resource control connection reject message obtained by the first receiving module 503, a zone access network.

The apparatus for redirecting provided by the embodiment of the present invention further includes:

The band capability information determining module 505 is configured to determine the band capability information according to the neighbor list and/or the neighbor list, and carry the band capability information in the RRC connection request.

As shown in FIG. 6, a redirection device provided by an embodiment of the present invention includes:

The second receiving module 601 is configured to receive a radio resource control connection request sent by the user terminal, where the radio resource control connection request carries frequency band capability information; the frequency band capability information may be a frequency range supported by the UE, or may be a range of frequencies not supported by the UE;

The frequency determining module 602 is configured to determine, according to the frequency band capability information carried in the RRC connection request that is obtained by the second receiving module 601, the access frequency of the user terminal, or to use the frequency band capability information and the neighboring cell according to the frequency band List and/or list of adjacent frequency points, determining the access frequency of the user terminal Rate.

The second sending module 603 is configured to send a radio resource control connection reject message to the user terminal, where the radio resource control connection reject message carries the access frequency determined by the frequency determining module 602.

The redirection device provided by the embodiment of the present invention, by carrying the radio frequency capability information of the UE in the radio resource control connection request sent by the UE, enables the UTRAN to learn the frequency range supported by the UE, thereby designating an appropriate access frequency for the UE. Therefore, the success rate of the redirection is improved, and the delay of the UE access is reduced.

Further, the apparatus for redirecting provided by the embodiment of the present invention may also be used in a scenario where the UE is located in an area covered by the UMTS network and other networks, and the UMTS network needs to redirect the access of the UE to other networks. In the scenario, as shown in FIG. 7, the apparatus for redirecting provided by the embodiment of the present invention includes:

The request generating module 701 is configured to generate a radio resource control connection request that carries the frequency band capability information and the network identifier of the supporting network. The frequency band capability information may be a frequency range supported by the UE in the supported network, or may be a UE in the network. Frequency ranges not supported in supported networks;

The first sending module 702 is configured to send, by the global terrestrial radio access network, the radio resource control connection generated by the request generating module 701;

The first receiving module 703 is configured to receive a radio resource control connection reject message that is sent by the global terrestrial radio access network and carries the access frequency and the access network identifier.

The access module 704 is configured to select a cell to access the access network according to the access frequency and the access network identifier carried in the radio resource control connection reject message obtained by the first receiving module 703.

The band capability information determining module 705 is configured to determine the band capability information according to the neighbor list and/or the neighbor list, and carry the band capability information in the RRC connection request.

As shown in FIG. 8, a redirection device provided by an embodiment of the present invention includes:

The second receiving module 801 is configured to receive a radio resource control connection request sent by the user terminal, where The radio resource control connection request carries the frequency band capability information and the network identifier of the user terminal support network; the frequency band capability information may be a frequency range supported by the UE in the supported network, or may be a UE in the supported network. Unsupported frequency range;

The frequency determining module 802 is configured to determine the access frequency and the access network identifier of the user terminal according to the frequency band capability information carried in the RRC connection request and the network identifier of the user terminal support network obtained by the second receiving module 801; Or for determining the access frequency of the user terminal according to the frequency band capability information and the neighbor list and/or the neighbor frequency list.

The second sending module 803 is configured to send a radio resource control connection reject message to the user terminal, where the radio resource control connection reject message carries the access frequency and the access network identifier determined by the frequency determining module 802.

The apparatus for redirecting provided by the embodiment of the present invention, by carrying the radio frequency capability information of the UE and the identifier of the supported network in the radio resource control connection request sent by the UE, enables the UTRAN to know the designated access frequency, thereby improving The success rate of the redirection reduces the delay of UE access.

As shown in FIG. 9, the embodiment of the present invention provides a redirection system, including: a UE and a UTRAN, where the UE is configured to send a radio resource control connection request to the UTRAN, where the radio resource control connection request carries a frequency band capability information; receiving a radio resource control connection reject message sent by the UTRAN, where the radio resource control connection reject message carries an access frequency; and selecting a cell access network according to the access frequency;

The UTRAN is configured to receive a radio resource control connection request sent by the UE, where the radio resource control connection request carries frequency band capability information, determine an access frequency of the UE according to the frequency band capability information, and send a radio resource to the UE. Controlling a connection reject message, the radio resource control connection reject message carries an access frequency.

The redirection system provided by the embodiment of the present invention carries the frequency band capability information in the radio resource control connection request sent by the UE to the UTRAN, so that the UTRAN can learn the frequency range supported by the UE, and specify the access according to the UE accordingly. Frequency, which increases the success rate of redirection and reduces the UE The delay of access.

Further, the redirection system provided by the embodiment of the present invention may also be used in a scenario where the UE is located in an area covered by the UMTS network and other networks, and the UMTS network needs to redirect the access of the UE to other networks. In the scenario, the redirected system provided by the embodiment of the present invention includes: a UE and a UTRAN,

The UE is configured to send a radio resource control connection request to the UTRAN, where the radio resource control connection request carries the frequency band capability information and the network identifier of the UE supporting network, and receives the radio resource control connection reject message sent by the UTRAN, where the wireless The resource control connection reject message carries an access frequency and an access network identifier; and the cell is selected to access the access network according to the access frequency and the access network identifier;

The UTRAN is configured to receive a radio resource control connection request sent by the UE, where the radio resource control connection request carries the frequency band capability information and the network identifier of the UE support network; and according to the frequency band capability information and the network identifier of the UE support network And determining, by the UE, an access frequency and an access network identifier, and sending a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries an access frequency and an access network identifier.

The redirection system provided by the embodiment of the present invention, by carrying the radio frequency capability information of the UE and the identifier of the supported network in the radio resource control connection request sent by the UE, enables the UTRAN to know the designated access frequency, thereby improving The success rate of the redirection reduces the delay of UE access.

As shown in FIG. 10, an embodiment of the present invention provides a method for redirecting, including:

1 001. Send a radio resource control connection request to the UTRAN.

When the UE wants to access the UMTS, it first sends an RRC connection request to the UTRAN, ready to establish an RRC connection;

1 002. Receive a radio resource control connection reject message sent by the UTRAN, where the radio resource control connection reject message carries an access frequency;

When the UTRAN determines that the access of the UE needs to be redirected, it sends a message to the UE. a line resource control connection reject message, where the RRC connection rejection message carries

The UE redirects the specified access frequency; the UE receives the RRC connection reject message, and the refusal message carries the access frequency specified by the UTRAN.

1003. When the access frequency is supported, select a cell access network according to the access frequency. After receiving the radio resource control connection reject message, the UE determines the access frequency carried by the UE, and if the access frequency is the supported frequency, selects an appropriate cell to access the UMTS according to the access frequency. Otherwise, the process of accessing the network is not initiated with the access frequency, but the cell is immediately selected to access the UMTS network at a frequency supported by the UE.

As shown in FIG. 1 , an embodiment of the present invention provides a method for redirecting, including:

11 01. Receive a radio resource control connection request sent by the UE.

11 02. Send a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries an access frequency.

The UTRAN determines whether the access of the UE needs to be redirected according to the radio resource control connection request sent by the UE and the current network status. When the redirection is required, the access frequency is specified for the UE, and the connection is performed. The incoming frequency is carried in the radio resource control connection reject message, and the radio resource control connection reject message is sent to the UE.

In the embodiment of the present invention, the UE determines the access frequency that the UTRAN specifies for the UE. If the access frequency is supported by the UE, the UE accesses according to the access frequency. Otherwise, the UE selects the frequency supported by the UE. A suitable cell accesses the UMTS network, thereby preventing the UE from initiating an access procedure at an unsupported frequency, and reducing the delay of the UE access.

As shown in FIG. 12, the embodiment of the present invention provides a redirection method, which can be applied to an area where a UE is located in a UMTS network and other networks, and needs to be redirected by the UMTS network to other networks. The scenario, the method for redirecting, includes:

1201. Send a radio resource control connection request to the UTRAN.

When the UE wants to access the UMTS, it first sends an RRC connection request to the UTRAN, and prepares to establish an RRC connection; 1202: Receive a radio resource control connection reject message sent by the UTRAN, where the radio resource control connection reject message carries an access frequency and an access network identifier;

When the UTRAN determines that the access of the UE needs to be redirected, it sends a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries the access specified for the UE redirection. The frequency and the access network identifier; the UE receives the radio resource control connection reject message, and the reject message carries the access frequency and the access network identifier specified by the UTRAN.

1203. When the access frequency and the access network are supported, the cell access network is selected according to the access frequency.

After receiving the radio resource control connection reject message, the UE determines the access network identifier and the access frequency carried by the UE, and if the access frequency is a frequency supported by the access network supported by the UE, The access frequency selects a suitable cell to access the access network; otherwise, the process of accessing the network is not initiated by using the access frequency, but the frequency supported by the UE is immediately used as the access frequency, and an appropriate frequency is selected. The cell accesses the access network.

As shown in FIG. 13 , an embodiment of the present invention provides a method for redirecting, including:

1301, receiving a radio resource control connection request sent by the UE;

1 302. Send a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries an access frequency and an access network identifier.

The UTRA determines whether the access of the UE needs to be redirected according to the radio resource control connection request sent by the UE and the current network status. When the redirection is required, the access frequency and the access network identifier are specified for the UE. And the access frequency and the access network identifier are carried in the radio resource control connection reject message, and the radio resource control connection reject message is sent to the UE.

In the embodiment of the present invention, the UE determines the access network and the access frequency for the UTRAN. If the access frequency in the access network is supported by the UE, the UE accesses according to the access frequency. Otherwise, The access is immediately performed at the supported frequency, thereby preventing the UE from initiating the access procedure at an unsupported frequency, and reducing the delay of the UE access.

As shown in FIG. 14, an embodiment of the present invention provides a redirection device, including: The third sending module 1401 is configured to send a radio resource control connection request to the global terrestrial radio access network;

The third receiving module 1402 is configured to receive a radio resource control connection reject message sent by the global terrestrial radio access network, where the radio resource control connection reject message carries an access frequency;

The processing module 1403 is configured to select a small-area network according to the access frequency when the access frequency is supported.

As shown in FIG. 15, an embodiment of the present invention provides a redirection device, including:

The fourth receiving module 1501 is configured to receive a radio resource control connection request sent by the user terminal, where the fourth sending module 1502 is configured to send a radio resource control connection reject message to the user terminal, where the radio resource control connection reject message carries Into the frequency.

The redirection device provided by the embodiment of the present invention determines, by the UE, the access frequency specified by the UTRAN for the UE, if the access frequency is supported by the UE, the UE accesses according to the access frequency, otherwise, The access is immediately performed at a supported frequency, thereby avoiding the UE's unsupported frequency and reducing the delay of UE access.

Further, the redirection device provided by the embodiment of the present invention may also be used in a scenario where the UE is located in an area covered by the UMTS network and other networks, and the UMTS network needs to redirect the access of the UE to other networks. In the scenario, as shown in FIG. 16, the apparatus for redirecting provided by the embodiment of the present invention includes:

The third sending module 1601 is configured to send a radio resource control connection request to the global terrestrial radio access network;

The third receiving module 1602 is configured to receive a radio resource control connection reject message sent by the global terrestrial radio access network, where the radio resource control connection reject message carries an access frequency and an access network identifier.

The processing module 1603 is configured to select a cell access network according to the access frequency and the access network when the access frequency and the access network are supported.

As shown in FIG. 17, an embodiment of the present invention provides a redirection device, including: The fourth receiving module 1701 is configured to receive a radio resource control connection request sent by the UE, where the fourth sending module 1702 is configured to send a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries an access frequency And access network identification.

The redirection device provided by the embodiment of the present invention determines, by the UE, the UTRAN to specify the access network and the access frequency, and if the access frequency in the access network is supported by the UE, the UE accesses according to the access The frequency is accessed. Otherwise, the access is immediately performed at the supported frequency, thereby preventing the UE from accessing at an unsupported frequency and reducing the delay of the UE access.

As shown in FIG. 18, an embodiment of the present invention provides a redirection system, including: a UE and a UTRAN, where the UE is configured to send a radio resource control connection request to the UTRAN; and receive a radio resource control sent by the UTRAN. a connection reject message, the radio resource control connection reject message carrying an access frequency; determining the access frequency, if the access frequency is supported, selecting a cell to access the UMTS network according to the access frequency, If the access frequency is not supported, the optional access frequency is used to access the UMTS network;

The UTRAN is configured to receive a radio resource control connection request sent by the UE, and send a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries an access frequency.

The redirection system provided by the embodiment of the present invention determines, by the UE, the access frequency specified by the UTRAN for the UTRAN, and if the access frequency is supported by the UE, the UE accesses according to the access frequency, otherwise, The access is immediately performed at a supported frequency, thereby preventing the UE from accessing at an unsupported frequency and reducing the delay of the UE access.

The UE is configured to send a radio resource control connection request to the UTRAN, and receive a radio resource control connection reject message sent by the UTRAN, where the radio resource control connection reject message carries an access frequency and an access network identifier; Enter the network identification and access frequency to judge, if the support Referring to the access frequency of the access network, the cell is selected to access the access network according to the access frequency; if the access frequency is not supported, the self-selected access frequency is used to access the access network;

The UTRAN is configured to receive a radio resource control connection request sent by the UE, and send a radio resource control connection reject message to the UE, where the radio resource control connection reject message carries an access frequency and an access network identifier.

The redirection system provided by the embodiment of the present invention determines, by the UE, the access frequency and the access network identifier that the UTRAN specifies, and if the access frequency in the access network is supported by the UE, the UE according to the The access frequency is used to access the access network. Otherwise, the access network is accessed at a supported frequency, thereby preventing the UE from accessing at an unsupported frequency and reducing the UE access time. Delay.

A person skilled in the art can understand that all or part of the steps of implementing the above embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium such as a ROM/RAM or a disk. Or a CD or the like.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Claim

A method for redirecting, comprising:

Receiving a radio resource control connection reject message sent by the global terrestrial radio access network, where the radio resource control connection reject message carries an access frequency determined according to the band capacity information carried in the radio resource control connection request;

Selecting a cell access network according to the access frequency.

The method for redirecting according to claim 1, wherein the RRC connection request further carries a network identifier of the user terminal supporting network; and the RRC connection reject message further carries Enter the network identifier;

The step of selecting a cell access network according to the access frequency includes:

Selecting a cell to access the access network according to the access frequency and the access network identifier.

The method of redirecting according to claim 1 or 2, wherein the frequency band capability information comprises:

The frequency band supported by the user terminal or the frequency band not supported.

The method for redirection according to claim 1 or 2, further comprising: before the sending the radio resource control connection request to the global terrestrial radio access network, the method further includes:

The band capability information is determined according to the neighbor list and/or the neighbor list, and the band capability information is carried in the RRC connection request.

5. A method for redirecting, comprising:

Sending a radio resource control connection reject message to the user terminal, where the radio resource control connection reject message carries an access frequency.

The method for redirecting according to claim 5, wherein the RRC connection request further carries a network identifier of the user terminal supporting network; and the RRC connection connection reject message further carries Enter the network identifier;

The step of determining the access frequency of the user terminal according to the frequency band capability information includes:

And determining, according to the frequency band capability information and the network identifier of the user terminal support network, the access frequency and the access network identifier of the user terminal.

The method of redirecting according to claim 5 or 6, wherein the frequency band capability information comprises:

The method for redirection according to claim 5 or 6, wherein the determining the access frequency of the user terminal according to the capability information of the frequency band comprises:

Determining the access frequency of the user terminal according to the frequency band capability information and the neighbor list and/or the neighbor frequency list.

9. A redirection device, comprising:

a request generating module, configured to generate a radio resource control connection request carrying frequency band capability information, and a first sending module, configured to send the radio resource control connection request to a global terrestrial radio access network;

a first receiving module, configured to receive a radio resource control connection reject message sent by the global terrestrial radio access network, where the radio resource control connection reject message carries the radio resource control connection request sent according to the first sending module The access frequency determined by the carried band capability information;

The apparatus for redirecting according to claim 9, wherein the request generating module is further configured to generate a radio resource control connection request that carries the band capability information and the network identifier of the supporting network;

The first receiving module is further configured to receive a radio resource control connection reject message carrying an access frequency and an access network identifier; The access module is further configured to select a cell to access the access network according to the access frequency and the access network identifier.

The apparatus for redirection according to claim 9 or 10, further comprising: a frequency band capability information determining module, configured to determine frequency band capability information according to a neighbor list and/or a neighbor frequency list, and The band capability information is carried in the radio resource control connection request.

12. A device for redirecting, comprising:

a frequency determining module, configured to determine, according to the frequency band capability information, an access frequency of the user terminal; a second sending module, configured to send a radio resource control connection reject message to the user terminal, where the radio resource control connection reject message carries Access frequency.

The apparatus for redirection according to claim 12, wherein the second receiving module is further configured to receive a radio resource control connection request carrying network identifier and frequency band capability information of a network supported by the user terminal;

The frequency determining module is further configured to determine an access frequency and an access network identifier of the user terminal according to the frequency band capability information and a network identifier of the user terminal supporting network;

The second sending module is further configured to send, to the user equipment, a radio resource control connection reject message carrying the access frequency and the access network identifier.

The apparatus for redirecting according to claim 12 or 13, wherein the frequency determining module is further configured to determine a user terminal according to the frequency band capability information and a neighbor list and/or a neighbor frequency list. Access frequency.

15. A method of redirecting, comprising:

The method for redirecting according to claim 15, wherein the radio resource control connection reject message further carries an access network identifier;

When the access frequency is supported, the step of selecting a cell access network according to the access frequency is specifically: when the access frequency and the access network are supported, selecting a cell access network according to the access frequency .

17. A redirection device, comprising:

a third sending module, configured to send a radio resource control connection request to the global terrestrial radio access network; a third receiving module, configured to receive a radio resource control connection reject message sent by the global terrestrial radio access network, where the radio resource control connection The access message carries the access frequency;

The apparatus for redirecting according to claim 17, further comprising: the third receiving module, further configured to receive a radio resource control connection reject message carrying an access frequency and an access network identifier;

The processing module is further configured to: when supporting the access frequency and accessing the network, select a cell access network according to the access frequency and the access network.