Method and apparatus in a telecommunication system
Exemplary methods in a network node of a radio access network (RAN) in a telecommunication system include receiving an indication from a network node in a core network that mobile terminated data is pending for a user equipment (UE), receiving a connection request from the UE, setting up a radio resource control (RRC) connection to the UE, releasing the RRC connection to the UE, setting a release timer value to a value sufficient to establish a mobile terminated communication by the network to the UE, and releasing the RRC connection to the UE when the release timer has expired. Exemplary methods in a network node of a RAN in a telecommunication system include keeping UE that is configured for long discontinuous reception (DRX) in idle mode, in RRC connected mode long enough to allow a network stored mobile terminated short message service (MT SMS) to be received by the UE.
1. A method in a network node of a radio access network (RAN) in a telecommunication system, the method comprising:
receiving a S1 UE Context Release Command (Cause) message with a cause value from a mobility management entity (MME) in a core network that mobile terminated data is pending for a user equipment (UE);
receiving a connection request from the UE and setting up a radio resource control (RRC) connection to the UE;
releasing the RRC connection to the UE; and setting a release timer value of a release timer to a larger value than a RRC inactivity timer to establish a mobile terminated communication to the UE, and wherein releasing the RRC connection to the UE is performed when the release timer has expired.
2. The method according to claim 1 , wherein the network node of the RAN is an Evolved Node B (eNodeB), a radio network controller (RNC), a NodeB, a base station controller (BSC), or a base transceiver station (BTS).
3. The method according to claim 1 , wherein a network node in the core network includes a mobile switching center (MSC) or a serving general packet radio service (GPRS) support node (SGSN).
4. The method according to claim 1 , wherein the network node of the RAN is an Evolved Node B (eNodeB) and a network node in the core network is the mobility management entity.
5. The method according to claim 1 , wherein the message from the core network that mobile terminated data is pending for the UE may be received while the network node has the RRC connection to the UE.
6. The method according to claim 1 , wherein the network node of the RAN is an Evolved Node B (eNodeB) and a network node in the core network is the mobility management entity, and receiving the message from the core network that mobile terminated data is pending for the UE comprises receiving a message, indicating that a downlink or mobile terminated transaction is pending.
7. A non-transitory computer-readable storage medium having computer code stored therein, which when executed by a processor of a network node of a radio access network (RAN) in a telecommunication system, cause the network node to perform operations comprising:
receiving a S1 UE Context Release Command (Cause) message with a cause value from a mobility management entity (MME) in a core network that mobile terminated data is pending for a user equipment (UE);
receiving a connection request from the UE and setting up a radio resource control (RRC) connection to the UE;
releasing the RRC connection to the UE; and
setting a release timer value of a release timer to a larger value than a RRC inactivity timer to establish a mobile terminated communication by the network to the UE, and wherein releasing the RRC connection to the UE is performed when the release timer has expired.
8. A network node for use in a radio access network (RAN) of a telecommunication system, the network node comprising:
a receiver adapted to receive a S1 UE Context Release Command (Cause) message with a cause value from a mobility management entity (MME) in a core network that mobile terminated data is pending for a user equipment (UE), and receive a connection request from the UE; and
circuitry adapted to set up a radio resource control (RRC) connection to the UE and release the RRC connection to the UE,
wherein the circuitry adapted to set up and release the RRC connection to the UE is configured to set a release timer value of a release timer to a larger value than a RRC inactivity timer to establish a mobile terminated communication to the UE and to release the RRC connection to the UE after the release timer has expired.
9. The network node according to claim 8 , wherein the network node of the RAN is an Evolved Node B (eNodeB), a radio network controller (RNC), a NodeB, a base station controller (BSC), or a base transceiver station (BTS).
10. The network node according to claim 8 , wherein a network node in the core network includes a mobile switching center (MSC) or a serving general packet radio service (GPRS) support node (SGSN).
11. The network node according to claim 8 , wherein the network node of the RAN is an Evolved Node B (eNodeB) and a network node in the core network is the mobility management entity.
12. The network node according to claim 8 , wherein the message from the core network that mobile terminated data is pending for the UE that the receiver is adapted to receive may be received while the network node has the RRC connection to the UE.
13. The network node according to claim 8 , wherein the network node of the RAN is an Evolved Node B (eNodeB) and a network node in the core network is the mobility management entity, and the message from the core network that mobile terminated data is pending for the UE that the receiver is adapted to receive comprises a message, indicating that a downlink or mobile terminated transaction is pending.