Paging in a Radio Access Network, Such As An E-UTLRAN

• US 20100248750A1
• Filed: 05/12/2008
• Published: 09/30/2010
• Est. Priority Date: 09/27/2007
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Dahlman, Erik, Müller, Walter, Mildh, Gunnar, Vukajlovic, Vera
• Granted Patent: US 8,886,232 B2
• Time in Patent Office: Days
• US Class Current: 455/458
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention relates to methods and arrangements of a network node and a UE of a radio access network supporting discontinuous reception, offering a solution that is based on the idea to use more than one sub frame for transmitting paging messages when needed. An indicator in a sub frame with paging messages indicates to the receiving UE if the subsequent sub frame should be read as well.

Claims

1-20. -20. (canceled)

21. A method for paging for a radio access network providing communication services to at least one user equipment, wherein the network, and the user equipment support discontinuous reception, and wherein a sub frame used for paging messages comprises a control part and a data part, said method comprising the steps of:

transmitting paging messages in the data part of a first sub frame;

transmitting a further paging message in the data part of a sub frame subsequent to the first sub frame, when the data rate of the first sub frame is not high enough for transmitting all paging messages; and

indicating by an indicator in the first sub frame if the control part of the sub frame subsequent to the first sub frame should be decoded.

22. The method according to claim 21, wherein the indicator comprises at least one bit of the control part.

23. The method according to claim 22, wherein the indicator is the paging radio network temporary identifier (P-RNTI).

24. The method according to claim 22, wherein the indicator is an alternative P-RNTI, identifying that both the first sub frame and the subsequent sub frame comprise paging messages.

25. The method according to claim 21, wherein the indicator comprises at least one bit of the data part.

26. A method for paging for a user equipment of a radio access network, wherein the user equipment and the network support discontinuous reception, and wherein a sub frame used for paging messages comprises a control part and a data part, said method comprising the steps of:

receiving a first sub frame comprising paging messages in the data part and an indicator indicating if the control part of a sub frame subsequent to the first sub frame should be decoded;

decoding the indicator;

receiving and decoding the control part of the sub frame subsequent to the first sub frame, when the indicator indicates that the control part of the sub frame subsequent to the first sub frame should be decoded, and

going into sleep mode when the indicator indicates that the control part of the sub frame subsequent to the first sub frame should not be decoded.

27. The method according to claim 26, wherein the indicator comprises at least one bit of the control part.

28. The method according to claim 27, wherein the indicator is the paging radio network temporary identifier (P-RNTI).

29. The method according to claim 27, wherein the indicator is an alternative P-RNTI, identifying that both the first sub frame and the subsequent sub frame comprise paging messages.

30. The method according to claim 26, wherein the indicator comprises at least one bit of the data part.

31. A network node of a radio access network providing communication services to at least one user equipment, wherein the network and the user equipment support discontinuous reception, and wherein a sub frame used for paging messages comprises a control part and a data part, said network node comprising:

means for transmitting paging messages in the data part of a first sub frame, and

means for transmitting a further paging message in the data part of a sub frame subsequent to the first sub frame, when the data rate of the first sub frame is not high enough for transmitting all paging messages, and

means for indicating by an indicator in the first sub frame if the control part of the sub frame subsequent to the first sub frame should be decoded.

32. The network node according to claim 31, wherein the indicator comprises at least one bit of the control part.

33. The network node according to claim 32, wherein the indicator is the paging radio network temporary identifier (P-RNTI).

34. The network node according to claim 32, wherein the indicator is an alternative P-RNTI, identifying that both the first sub frame and the subsequent sub frame comprise paging messages.

35. The network node according to claim 31, wherein the indicator comprises at least one bit of the data part.

36. A user equipment of a radio access network, wherein the user equipment and the network support discontinuous reception, and wherein a sub frame used for paging messages comprises a control part and a data part, said user equipment comprising:

means for receiving a first sub frame comprising paging messages in the data part and an indicator indicating if the control part of a sub frame subsequent to the first sub frame should be decoded;

means for decoding the indicator;

means for receiving and decoding the control part of the sub frame subsequent to the first sub frame, when the indicator indicates that the control part of the sub frame subsequent to the first sub frame should be decoded, and

means for going to sleep mode when the indicator indicates that the control part of the sub frame subsequent to the first sub frame should not be decoded.

37. The user equipment according to claim 36, wherein the indicator comprises at least one bit of the control part.

38. The user equipment according to claim 37, wherein the indicator is the paging radio network temporary identifier (P-RNTI).

39. The user equipment according to claim 37, wherein the indicator is an alternative P-RNTI, identifying that both the first sub frame and the subsequent sub frame comprise paging messages.

40. The user equipment according to claim 36, wherein the indicator comprises at least one bit of the data part.