System information acquisition during handover
A method of operating a wireless device includes transmitting, to a serving node, an indication of system information configurations stored by the wireless device, the indication including a plurality of indices each corresponding to a respective system information configuration stored by the wireless device. The wireless device receives a handover command instructing the wireless device to access a target cell, wherein the handover command indicates a selected one of the plurality of indices corresponding to the target cell, and accesses the target cell using a system information configuration corresponding to the selected one of the plurality of indices.
1. A method of operating a wireless device in a wireless communication network, wherein the wireless device is served by a serving node in the wireless communication network, the method comprising:
transmitting, to the serving node, an indication of system information configurations stored by the wireless device;
receiving, from the serving node, a handover command instructing the wireless device to access a target cell in the wireless communication network, wherein the handover command indicates a selected one of the system information configurations; and
accessing the target cell using the selected system information configuration,
wherein the indication of system information configurations comprises a plurality of indices, each of the plurality of indices corresponding to a respective system information configuration stored by the wireless device, and wherein the handover command indicates a selected one of the plurality of indices corresponding to the selected one of the system information configurations.
2. The method according to claim 1 , wherein each of the plurality of indices corresponds to a group of cells in the wireless communication network, and wherein the selected one of the plurality of indices corresponds to a selected group of cells including the target cell.
3. The method according to claim 2 , wherein each of the plurality of indices corresponds to an area identifier that corresponds to an associated group of cells in the wireless communication network.
4. The method according to claim 1 , wherein the system information configurations comprise system information blocks (SIBs) that include parameters for accessing a corresponding target cell in the communication network.
5. The method according to claim 4 , wherein the parameters for accessing the corresponding target cell comprise common random access channel (RACH) configurations.
6. The method according to claim 1 , wherein the system information configurations comprise master information blocks (MIBs) that include parameters for accessing a corresponding target cell in the communication network.
7. The method according to claim 1 , wherein transmitting the indication of system information configurations stored by the wireless device to the serving node comprises:
transmitting the indication of system information configurations stored by the wireless device during a connection resume procedure.
8. The method according to claim 7 , wherein the connection resume procedure comprises a radio resource control (RRC) Connection Resume request, an RRC Connection Reactivation message, an RRC Connection Resume Complete message, or an RRC Connection Reactivation Complete message.
9. The method according to claim 1 , wherein transmitting the indication of system information configurations stored by the wireless device to the serving node comprises:
transmitting the indication of system information configurations stored by the wireless device during a connection setup procedure or measurement reporting.
10. The method according to claim 1 , wherein transmitting the indication of system information configurations stored by the wireless device to the serving node comprises:
transmitting the indication of system information configurations stored by the wireless device with a radio resource control (RRC) measurement report, RRC setup request, and/or an RRC setup complete message.
11. The method according to claim 1 , wherein transmitting the indication of system information configurations stored by the wireless device to the serving node comprises:
transmitting the indication of system information configurations stored by the wireless device with a radio resource control (RRC) Handover complete.
12. A wireless device comprising:
a transceiver configured to provide wireless network communication with a wireless communication network; and
processing circuitry coupled to the transceiver, wherein the processing circuitry is configured to provide wireless network communication through the transceiver, and wherein the processing circuitry is configured to perform operations comprising:
transmitting, to a serving node, an indication of system information configurations stored by the wireless device;
receiving, from the serving node, a handover command instructing the wireless device to access a target cell in the wireless communication network,
wherein the handover command indicates a selected one of the system information configurations; and
accessing the target cell using the selected system information configuration,
wherein the indication of system information configurations comprises a plurality of indices, each of the plurality of indices corresponding to a respective system information configuration stored by the wireless device, and wherein the handover command indicates a selected one of the plurality of indices corresponding to the selected one of the system information configurations.