COMMUNICATION SYSTEM

• US 20160380779A1
• Filed: 01/23/2015
• Published: 12/29/2016
• Est. Priority Date: 01/31/2014
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: SHARMA, Vivek, CHEN, Yuhua
• Granted Patent: US 10,447,489 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 63/1466 Active attacks involving interception, injection, modification, spoofing of data unit addresses, e.g. hijacking, packet injection or TCP sequence number attacks
• CPC Class Codes: H04W 12/122 Counter-measures against attacks; Protection against rogue devices
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 92/10 between terminal device and access point, i.e. wireless air interface

Abstract

A system is provided in which a user device communicates control data with a first base station and communicates user data with a second base station. The user device receives, from the first base station, configuration data specific to the first base station and configuration data specific to the second base station for configuring the user device to handle in-device coexistence interference. When the user device detects interference, it identifies the base station to which the interference relates, and controls the operating of its transceiver circuitry: i) using the first base station specific configuration data if it identifies that the interference is related to the first base station; and ii) using the second base station specific configuration data if it identifies that the interference is related to the second base station.

Claims

1. A secondary base station device configured to provide user plane connectivity to a user device whilst control plane connectivity is provided to the user device by a master base station device, the secondary base station device comprising:

a transceiver circuit configured to communicate with the master base station device; and

a processor configured to initiate a counter check procedure for a radio bearer associated with the user device and terminated in the secondary base station by generating control data for transmission to the user device and by transmitting the control data to the master base station device, the control data comprising at least one count value indicating an amount of data transmitted to or received from the user device on the radio bearer for use in checking for packet insertion by another device.

2. A secondary base station according to claim 1, wherein the processor is further configured to receive a counter check response message from the user device via the master base station device and is further configured to process the response message to determine whether or not a security breach has occurred and if so, to initiate a bearer release procedure.

3. A secondary base station according to claim 1, wherein the control data comprises a radio resource control, RRC, message for the user device requesting the user device to verify the amount of data received by or transmitted from the user device on the radio bearer.

4. A secondary base station device according to claim 1, wherein the processor is further configured to initiate the bearer release procedure by sending a message to the master base station device, requesting that the master base station release the radio bearer and/or to allocate a new radio bearer.

5. A master base station device configured to provide control plane connectivity to a user device whilst user plane connectivity is provided to the user device by a secondary base station device, the master base station device comprising:

a transceiver circuit configured to communicate with the secondary base station device; and

a processor configured to receive control data relating to the user device from the secondary base station device, the control data for initiating a counter check procedure for a radio bearer associated with the user device and terminated in the secondary base station, the control data comprising at least one count value indicating an amount of data transmitted to or received from the user device on the radio bearer for use in checking for packet insertion by another device;

wherein the processor is further configured to generate a counter check control message containing said at least one count value for transmission to the user device to cause the user device to perform a counter check procedure; and

wherein the transceiver circuit is further configured to transmit the counter check control message to the user device, and for receiving a counter check response from the user device.

6. A master base station according to claim 5, wherein the transceiver circuit is further configured to transmit the counter check response to the secondary base station device.

7. A master base station according to claim 5, wherein the processor is further configured to receive a bearer release request from the secondary base station and is configured to release the requested bearer and/or to allocate a new radio bearer between the secondary base station and the user device.

8. A master base station device according to claim 5, wherein the processor is further configured to cipher the counter check control message containing the at least one count value from the secondary base station device.

9. A master base station device configured to provide control plane connectivity to a user device whilst user plane connectivity is provided to the user device by a secondary base station device, the master base station device comprising:

a transceiver circuit configured to communicate with the secondary base station device; and

wherein the transceiver circuit is further configured to receive a desired multimedia broadcast/multicast service, MBMS, interest indication message from the user device;

a processor configured to determine that the MBMS service is to be provided by a cell of the secondary base station which is not currently serving the user device;

wherein the transceiver circuit is further configured to send the MBMS interest indication message to the secondary base station;

wherein the processor is further configured to add the cell that will provide the MBMS service to a group of secondary base station cells that are currently serving the user device or for handing over the user device from a current serving cell of the secondary base station to the secondary base station cell that will provide the MBMS service.

10. A secondary base station device configured to provide user plane connectivity to a user device whilst control plane connectivity is provided to the user device by a master base station device, the secondary base station device comprising:

a transceiver circuit configured to communicate with the master base station device;

wherein the transceiver circuit is further configured to receiver a desired multimedia broadcast/multicast service, MBMS, interest indication message from the user device from the master base station device; and

a processor configured to add the cell that will provide the MBMS service to a group of secondary base station cells that are currently serving the user device or for changing a current serving cell for the user device to the secondary base station cell that will provide the MBMS service.

11. A method performed by a secondary base station device configured to provide user plane connectivity to a user device whilst control plane connectivity is provided to the user device by a master base station device, the secondary base station device comprising:

communicating with the master base station device; and

initiating a counter check procedure for a radio bearer associated with the user device and terminated in the secondary base station by generating control data for transmission to the user device and by transmitting the control data to the master base station device, the control data comprising at least one count value indicating an amount of data transmitted to or received from the user device on the radio bearer for use in checking for packet insertion by another device.

12. The method according to claim 11, wherein the method further comprising receiving a counter check response message from the user device via the master base station device and processing the response message to determine whether or not a security breach has occurred and if so, to initiate a bearer release procedure.

13. A method performed by a master base station device configured to provide control plane connectivity to a user device whilst user plane connectivity is provided to the user device by a secondary base station device, the method comprising:

receiving control data relating to the user device from the secondary base station device, the control data for initiating a counter check procedure for a radio bearer associated with the user device and terminated in the secondary base station, the control data comprising at least one count value indicating an amount of data transmitted to or received from the user device on the radio bearer for use in checking for packet insertion by another device;

generating a counter check control message containing said at least one count value for transmission to the user device to cause the user device to perform a counter check procedure; and

transmitting the counter check control message to the user device, and for receiving a counter check response from the user device.

14. The method according to claim 13, comprising transmitting the counter check response to the secondary base station device.

15. The method according to claim 14, further comprising ciphering the counter check control message containing the at least one count value from the secondary base station device.

16. A method performed by a master base station device configured to provide control plane connectivity to a user device whilst user plane connectivity is provided to the user device by a secondary base station device, the method comprising:

receiving a desired multimedia broadcast/multicast service, MBMS, interest indication message from the user device;

determining that the MBMS service is to be provided by a cell of the secondary base station which is not currently serving the user device;

sending the MBMS interest indication message to the secondary base station; and

adding the cell that will provide the MBMS service to a group of secondary base station cells that are currently serving the user device or handing over the user device from a current serving cell of the secondary base station to the secondary base station cell that will provide the MBMS service.

17. A method performed by a secondary base station device configured to provide user plane connectivity to a user device whilst control plane connectivity is provided to the user device by a master base station device, the method comprising:

receiving a desired multimedia broadcast/multicast service, MBMS, interest indication message from the user device from the master base station device; and

adding the cell that will provide the MBMS service to a group of secondary base station cells that are currently serving the user device or changing a current serving cell for the user device to the secondary base station cell that will provide the MBMS service.

18. (canceled)