Method for data communication, system for communication and related devices
地域：
Shenzhen
摘要
A data communication method, a communication system, and related devices are configured to establish a transaction identifier (TI) in a user equipment (UE). The data communication method includes the following steps. A mobility management entity (MME) receives a request message and obtains ability information of the UE. If the UE has an ability to access a Universal Terrestrial Radio Access Network/GSM/EDGE Radio Access Network (UTRAN/GERAN), the MME generates the TI. A communication system and related devices are also provided. Thus, the TI is effectively established in the UE, so as to ensure normal processing of the UE.
說明書
This application is a continuation of U.S. application Ser. No. 14/721,279, filed on May 26, 2015, which is a continuation of U.S. application Ser. No. 14/455,096, filed on Aug. 8, 2014, now U.S. Pat. No. 9,060,358, which is a continuation of U.S. application Ser. No. 13/869,699, filed on Apr. 24, 2013, now U.S. Pat. No. 8,838,168, which is a continuation of U.S. application Ser. No. 12/966,620, filed on Dec. 13, 2010, now U.S. Pat. No. 8,452,327, which is a continuation of International Application No. PCT/CN2009/072245, filed on Jun. 12, 2009. The International application claims priority to Chinese Patent Application No. 200810038984.7, filed on Jun. 13, 2008. The aforementioned patent applications are hereby incorporated by reference in their entireties.
The present invention relates to the field of communication technology, and more particularly to a data communication method, a communication system, and related devices.
In a Universal Mobile Telecommunication System (UMTS), the process for establishing a Packet Data Protocol (PDP) context by a user equipment (UE) is as shown in
權(quán)利要求
What is claimed is:1. A communication system comprising:a mobility management entity (MME) configured to: receive a request message from a user equipment (UE), wherein the request message comprises ability information of the UE; generate a transaction identifier (TI) associated with a default bearer of the UE if the ability information of the UE indicates that the UE has an ability to access a Universal Terrestrial Radio Access Network(UTRAN) or a GSM/EDGE Radio Access Network (GERAN); and transmit the generated TI to the UE for interworking from Evolved Universal Terrestrial Radio Access Network (E-UTRAN) to the UTRAN or GERAN. 2. The communication system of claim 1 , wherein the request message comprises an attach request message. 3. The communication system of claim 2 , wherein the MME is configured to transmit session management information to a base station, wherein the session management information comprises the generated TI. 4. The communication system of claim 2 , wherein the MME is configured to transmit an attach accept message to a base station, and wherein the attach accept message comprises the generated TI. 5. The communication system of claim 3 , wherein the MME is configured to transmit an attach accept message to a base station, and wherein the attach accept message comprises the session management information. 6. The communication system of claim 1 , wherein the request message comprises a packet data network connectivity request message. 7. The communication system of claim 1 , wherein the MME is configured to transmit session management information to a base station, and wherein the session management information comprises the generated TI. 8. The communication system of claim 7 , wherein the MME is configured to transmit an attach accept message to a base station, and wherein the attach accept message comprises the session management information. 9. The communication system of claim 1 , wherein the MME is configured to transmit an attach accept message to a base station, and wherein the attach accept message comprises the generated TI. 10. The communication system of claim 1 , further comprising a random access network (RAN) node, the RAN configured to receive the TI from the MME and to forward the TI to the UE. 11. The communication system of claim 1 , further comprising a serving gateway (SGW) and a packet data network gateway (PGW),wherein the MME is further configured to create a request for the default bearer of the UE and transmit the request for the default bearer to the SGW, wherein the SGW is configured to forward the request for the default bearer to the PGW, wherein the PGW is configured to create a response for the default bearer corresponding to the request for the default bearer and transmit the response for the default bearer to the SGW, and wherein the SGW is further configured to forward the response for the default bearer to the MME. 12. A communication method comprising:receiving, by a mobility management entity (MME), a request message from a user equipment (UE), wherein the request message comprises ability information of the UE; generating, by the MME, a transaction identifier (TI) associated with a default bearer of the UE if the ability information of the UE indicates that the UE has an ability to access a Universal Terrestrial Radio Access Network(UTRAN) or a GSM/EDGE Radio Access Network (GERAN); and transmitting, by the MME, the generated TI to the UE for interworking from Evolved Universal Terrestrial Radio Access Network (E-UTRAN) to the UTRAN or GERAN. 13. The method of claim 12 , wherein the request message comprises an attach request message. 14. The method of claim 12 , wherein transmitting the generated TI comprises:transmitting, by the MME, an attach accept message to a base station, and wherein the attach accept message comprises the generated TI. 15. The method of claim 12 , wherein transmitting the generated TI comprises:transmitting, by the MME, session management information to a base station, wherein the session management information comprises the generated TI. 16. The method of claim 15 , wherein transmitting the generated TI comprises:transmitting, by the MME, an attach accept message to a base station, and wherein the attach accept message comprises the session management information. 17. The method of claim 12 , wherein the request message comprises a packet data network connectivity request message. 18. The method of claim 12 , further comprising:receiving, by a random access network (RAN) node, the TI from the MME and forwarding the TI to the UE. 19. The method of claim 12 , further comprising:creating, by the MME, a request for the default bearer of the UE and transmitting the request for the default bearer to a serving gateway (SGW), forwarding, by the SGW, the request for the default bearer to a packet data network gateway (PGW), creating, by the PGW, a response for the default bearer corresponding to the request for the default bearer and transmitting the response for the default bearer to the SGW, and forwarding, by the SGW, the response for the default bearer to the MME.
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