Channel quality indicator reporting

• US 9,854,593 B2
• Filed: 06/20/2016
• Issued: 12/26/2017
• Est. Priority Date: 01/07/2011
• Status: Active Grant

• Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Original Assignee: Nokia Solutions and Networks US LLC (Nokia Corporation)
• Inventors: Wu, Chunli, Sebire, Benoist P.
• Primary Examiner(s): Chriss, Andrew
• Assistant Examiner(s): KIRILLOVA, ELLEN A
• Application Number:
  US15/186,712
• Publication Number:
  US 20160323902A1
• Time in Patent Office: 554 Days
• Field of Search: 370252
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: H04W 8/24 Transfer of terminal data
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A method, computer program and apparatus operate when resuming data transmission/reception upon activation of a serving cell, or after a long in-device coexistence interference avoidance gap, to determine whether to report to a network access node an in-device coexistence interference indicator value and send the in-device coexistence interference indicator value to the network access node, The in-device coexistence interference indicator value is reported to the network access node for a certain period if any periodic channel quality indication resource is configured for the cell, or if an aperiodic channel quality indication for the cell is requested from the network access node.

Claims

1. An apparatus, comprising:

at least one processor; and

at least one memory storing a computer program;

in which the at least one memory with the computer program is configured with the at least one processor to cause the apparatus to at least;

receiving, by Medium Access Control (MAC) signaling from a network access node for a primary serving cell, an activation message specifying that a secondary serving cell is to be activated for the apparatus, wherein the activation message indicates a timing of when a channel quality indication result for the secondary serving cell should be reported, and

reporting to the network access node for the primary serving cell a valid channel quality indication result for the secondary serving cell following the timing, wherein the valid channel quality indication result for the secondary serving cell is not available until a first subframe that has a reference signal is available after the activation of the secondary serving cell.

2. The apparatus according to claim 1, where the apparatus communicates with the network access node in accordance with transmission mode 9.

3. The apparatus according to claim 1, where the reference signal is a channel state information reference signal for transmission mode 9 and is a cell-specific reference signal for transmission modes other than transmission mode 9.

4. The apparatus according to claim 1, wherein when the primary serving cell is activated all configured cells, or only configured and activated cells, report an out of range channel quality indication value to the network access node until the apparatus has the valid channel quality indication result for the secondary serving cell.

5. The apparatus according to claim 1, further comprising:

resuming data transmission/reception upon the activation of the secondary serving cell, where a deactivation timer and a power headroom report trigger are provided for determining whether a gap before the resuming data transmission/reception indicates a real activation of a deactivated serving cell or reactivation of the secondary serving cell.

6. The apparatus according to claim 1, where the secondary serving cell is activated after a certain time period including processing time for a channel quality indication measurement for the secondary serving cell.

7. The apparatus according to claim 6, wherein to enable carrier aggregation, the valid channel quality indication result for the secondary serving cell is reported if periodic channel quality indication reporting for the secondary serving cell is configured for the apparatus or if an aperiodic channel quality indication reporting for the secondary serving cell is requested from the network access node, where a minimum requirement is defined for the certain time period before the valid channel quality indication result for the secondary serving cell is reported, and where the valid channel quality indication result for the secondary serving cell is reported no later than the minimum requirement.

8. A method, comprising:

receiving, by Medium Access Control (MAC) signaling from a network access node for a primary serving cell, an activation message specifying that a secondary serving cell is to be activated for the apparatus, wherein the activation message indicates a timing of when a channel quality indication result for the secondary serving cell should be reported, and reporting to the network access node for the primary serving cell a valid channel quality indication result for the secondary serving cell following the timing, wherein the valid channel quality indication result for the secondary serving cell is not available until a first subframe that has a reference signal is available after the activation of the secondary serving cell.

9. The method according to claim 8, where the apparatus communicates with the network access node in accordance with transmission mode 9.

10. The method according to claim 8, where the reference signal is a channel state information reference signal for transmission mode 9 and is a cell-specific reference signal for transmission modes other than transmission mode 9.

11. The method according to claim 8, wherein when the primary serving cell is activated all configured cells, or only configured and activated cells, report an out of range channel quality indication value to the network access node until the apparatus has the valid channel quality indication result for the secondary serving cell.

12. The method according to claim 8, further comprising:

resuming data transmission/reception upon the activation of the secondary serving cell, where a deactivation timer and a power headroom report trigger are provided for determining whether a gap before the resuming data transmission/reception indicates a real activation of a deactivated serving cell or reactivation of the secondary serving cell.

13. The method according to claim 8, where the secondary serving cell is activated after a certain time period including processing time for a channel quality indication measurement for the secondary serving cell.

14. The apparatus according to claim 13, wherein to enable carrier aggregation, the valid channel quality indication result for the secondary serving cell is reported if periodic channel quality indication reporting for the secondary serving cell is configured for the apparatus or if an aperiodic channel quality indication reporting for the secondary serving cell is requested from the network access node, where a minimum requirement is defined for the certain time period before the valid channel quality indication result for the secondary serving cell is reported, and where the valid channel quality indication result for the secondary serving cell is reported no later than the minimum requirement.

15. An apparatus, comprising:

at least one processor; and

at least one memory storing a computer program;

in which the at least one memory with the computer program is configured with the at least one processor to cause the apparatus to at least;

transmit to a user equipment, by Medium Access Control (MAC) signaling from the apparatus for a primary serving cell, an activation message specifying that a secondary serving cell is to be activated for the user equipment, wherein the activation message indicates a timing of when a channel quality indication result for the secondary serving cell should be reported; and

receive from the user equipment, a valid channel quality indication result for the secondary serving cell following the timing, wherein the valid channel quality indication result for the secondary serving cell is not available until a first subframe that has a reference signal is available after the activation of the secondary serving cell.

16. The apparatus according to claim 15, where the user equipment communicates with the apparatus in accordance with transmission mode 9.

17. The apparatus according to claim 15, where the reference signal is a channel state information reference signal for transmission mode 9 and is a cell-specific reference signal for transmission modes other than transmission mode 9.

18. The apparatus according to claim 15, wherein when the primary serving cell is activated all configured cells, or only configured and activated cells, report an out of range channel quality indication value to the apparatus until the user equipment has the valid channel quality indication result for the secondary serving cell.

19. The apparatus according to claim 15, wherein the user equipment is further configured to resume data transmission/reception upon the activation of the secondary serving cell, and to determine whether a gap before the resuming data transmission/reception indicates a real activation of a deactivated serving cell or reactivation of the secondary serving cell by employing a deactivation timer and a power headroom report trigger.

20. The apparatus according to claim 15, where the secondary serving cell is activated after a certain time period including processing time for a channel quality indication measurement for the secondary serving cell.

21. The apparatus according to claim 20 , wherein to enable carrier aggregation, a radio transmission for the secondary serving cell is transmitted from the user equipment after a certain time period, where the radio transmission includes a valid channel quality indication result for the secondary serving cell, where a minimum requirement is defined for the certain time period before the valid channel quality indication result for the secondary serving cell is received by the apparatus from the user equipment, where the valid channel quality indication result for the secondary serving cell is received by the apparatus from the user equipment no later than the minimum requirement.

22. A method, comprising:

transmitting to a user equipment, by Medium Access Control (MAC), an activation message specifying that a secondary serving cell is to be activated for the user equipment, wherein the activation message indicates a timing of when a channel quality indication result for the secondary serving cell should be reported; and

receiving from the user equipment, a valid channel quality indication result for the secondary serving cell following the timing, wherein the valid channel quality indication result for the secondary serving cell is not available until a first subframe that has a reference signal is available after the activation of the secondary serving cell.

23. The method according to claim 22, where the user equipment communicates with the apparatus in accordance with transmission mode 9.

24. The method according to claim 22, where the reference signal is a channel state information reference signal for transmission mode 9 and is a cell-specific reference signal for transmission modes other than transmission mode 9.

25. The method according to claim 22, wherein when the primary serving cell is activated all configured cells, or only configured and activated cells, report an out of range channel quality indication value to the apparatus until the user equipment has the valid channel quality indication result for the secondary serving cell.

26. The method according to claim 22, wherein the user equipment is further configured to resume data transmission/reception upon the activation of the secondary serving cell, and to determine whether a gap before the resuming data transmission/reception indicates a real activation of a deactivated serving cell or reactivation of the secondary serving cell by employing a deactivation timer and a power headroom report trigger.

27. The method according to claim 22, where the secondary serving cell is activated after a certain time period including processing time for a channel quality indication measurement for the secondary serving cell.

28. The apparatus according to claim 27, wherein to enable carrier aggregation, a radio transmission for the secondary serving cell is transmitted from the user equipment after a certain time period, where the radio transmission includes a valid channel quality indication result for the secondary serving cell, where a minimum requirement is defined for the certain time period before the valid channel quality indication result for the secondary serving cell is received by the apparatus from the user equipment, where the valid channel quality indication result for the secondary serving cell is received by the apparatus from the user equipment no later than the minimum requirement.