Enabling CDMA2000 System Sharing in LTE

• US 20130259006A1
• Filed: 03/15/2013
• Published: 10/03/2013
• Est. Priority Date: 03/27/2012
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Kelley, Sean, Schmidt, Christopher, Khan, Javed
• Granted Patent: US 9,516,623 B2
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04W 36/0022 for transferring data sessions between adjacent core network technologies
• CPC Class Codes: H04W 36/00224 between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal

Abstract

A method at a user equipment in an LTE system includes selecting one of a number of CDMA systems, and signaling indication(s) of the selected CDMA system to a network element. The network element receives indications) of CDMA system(s), which correspond to requested action(s) by a UE. The network element routes information corresponding to the requested action(s) to the CDMA system(s). Another network element in the LTE system signals to the UE indications of a mapping of a number of CDMA systems to associated ones of LTE system(s). The other network element receives signaling from the UE including indication(s) of selected CDMA system(s) selected by the UE.

Claims

1. An apparatus, comprising:

one or more processors; and

one or more memories including computer program code,

the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus to perform at least the following;

selecting, at a user equipment in a long term evolution system, one of a plurality of code division multiple access systems; and

signaling one or more indications of the selected code division multiple access system to a network element.

2. The apparatus of claim 1, the one or more memories and the computer program code are further configured, with the one or more processors, to cause the apparatus to perform at least receiving a mapping of the plurality of code division multiple access systems to associated ones of one or more long term evolution systems, and wherein the selecting further comprises selecting one of the plurality of code division multiple access systems using the mapping.

3. The apparatus of claim 2, wherein:

the mapping comprises a mapping of a plurality of high rate packet data systems and 1x radio transmission technology systems to the one or more long term evolution systems;

the selecting further comprises selecting a high rate packet data system and a 1x radio transmission technology system; and

the signaling further comprises signaling an indication of the selected high rate packet data system and an indication of the selected 1x radio transmission technology system to the network element.

4. The apparatus of claim 3, wherein the selecting further comprises selecting the selected 1x radio transmission technology system as a circuit switched fallback system, and wherein the signaling further comprises signaling an indication of the selected 1x radio transmission system to a base station tor purposes of requesting parameters for the selected 1x radio transmission system from the long term evolution system.

5. The apparatus of claim 3, wherein the one or more memories and the computer program code are further configured, with the one or more processors, to cause the apparatus to perform the following:

performing, using the long term evolution system, an uplink information transfer of information pertaining to one of the 1x radio transmission technology system or the high rate packet data system, the uplink, transfer at least comprising a message indicating which of the 1x radio transmission technology system or the high rate packet data system the information pertains to.

6. The apparatus of claim 1, wherein:

the plurality of code division multiple access systems further comprise a plurality of high rate packet data systems;

selecting further comprises selecting one of the plurality of high rate packet data systems; and

the signaling further comprises signaling the selected high rate packet data system to a base station in a measurement report.

7. The apparatus of claim 6, wherein the selecting and signaling are performed as part of a handover to the selected evolved high rate packet data system.

8. The apparatus of claim 6, wherein:

the plurality of code division multiple access systems further comprise a plurality of lx radio transmission technology systems;

the selecting further comprises selecting one of the plurality of lx radio transmission technology systems; and

signaling further comprises signaling the selected lx radio transmission technology system to abase station in a measurement report.

9. The apparatus of claim 8, wherein the selecting and signaling are performed as part of a handover from, the long term evolution system to the selected lx radio transmission technology system and as part of a concurrent handover to the selected high rate packet data system, and wherein the one or more memories and the computer program code are further configured, with the one or more processors, to cause the apparatus to perform:

signaling by the user equipment to the base station art extended service request comprising an indication of the selected 1x radio transmission technology system.

10. The apparatus of claim 1, wherein:

the plurality of code division multiple access systems further comprise a plurality of 1x radio transmission technology systems;

the selecting further comprises selecting one of the plurality of 1x radio transmission technology systems; and

the signaling further comprises signaling the selected 1x radio transmission technology system to a base station in a measurement report.

11. The apparatus of claim 10, wherein the selecting and signaling are performed as part of a single radio voice call continuity of a voice over internet protocol call to the selected 1x radio transmission technology system.

12. An apparatus, comprising:

one or more processors; and

one or more memories including computer program code,

the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus to perform at least the following;

receiving at a network element in a long term evolution system one or more indications of one or more selected ones of a plurality of code division multiple access systems to which the network element has access, the one or more selected code division multiple access systems corresponding to one or more requested actions by a user equipment and selection by the user equipment of the selected ones of the plurality of code division multiple access systems; and

routing information corresponding to the one or snore requested actions to the one or more selected code division multiple access systems.

13. The apparatus of claim 12, wherein the one or more requested actions comprise a pre-registration procedure with a selected code division multiple access system, and wherein the routing further comprises routing information corresponding to the pre-registration procedure to the selected code division multiple access system.

14. The apparatus of claim 13, wherein the plurality of code division multiple access systems to which the network element has access further comprises a plurality of lx radio transmission technology systems and a plurality of high rate packet data systems, and wherein the one or more selected plurality of code division multiple access systems comprises one of a selected lx radio transmission technology system or a selected high rate packet data system.

15. A apparatus, comprising:

one or more processors; and

one or more memories including computer program code,

the one or more memories and the computer program code configured, with the one or more processors, to cause the apparatus to perform at least the following;

signaling, at a network element in a long term evolution system, to a user equipment indications of a mapping of a plurality of code division multiple access systems to associated ones of one or more long term evolution systems; and

receiving signaling from the user equipment comprising one or more indications of one or more selected code division, multiple access systems selected, by the user equipment.

16. The apparatus of claim 15, wherein the one or more memories and the computer program code are further configured, with the one or more processors, to cause the apparatus to perform:

signaling, responsive to the receiving, the one or more indications of the one or more selected code division multiple access systems to a second network element in the long term evolution system.

17. The apparatus of claim 16, wherein the one or more memories and the computer program code are further configured, with the one or more processors, to cause the apparatus to perform:

receiving signaling corresponding to one or more requested actions by a user equipment and corresponding to the one or more selected code division multiple access systems; and

signaling the one or more requested actions to the second network element.

18. The apparatus of claim 15, wherein the one or more memories and the computer program code are further configured, with the one or more processors, to cause the apparatus to perform:

requesting via signaling the user equipment to perform measurements of the one or more selected code division multiple access systems.

19. The apparatus of claim 18, wherein the requesting is performed in response to signaling received from a second network element in the long term evolution system comprising an indication of at least a 1x radio transmission technology system, and wherein the requesting via signaling the user equipment to perform measurements of the one or more selected code division multiple access systems further comprises requesting via signaling the user equipment to perform measurements of the 1x radio transmission technology system.

20. The apparatus of claim 15, wherein the one or more signaled indications comprises one or both of an indication of a selected 1x radio transmission technology system and a selected high rate packet data system, and wherein the one or more memories and the computer program code are further configured, with the one or more processors, to cause the apparatus to perform:

using the indications to select a set of CDMA2000 parameters associated with one or both of the selected 1x radio transmission technology system or the selected high rate packet data system to send to the user equipment, and sending the set of CDMA2000 parameters to the user equipment.