UE category handling

• US 9,860,888 B2
• Filed: 10/01/2015
• Issued: 01/02/2018
• Est. Priority Date: 10/08/2014
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gaal, Peter, Chen, Wanshi
• Primary Examiner(s): Phunkulh, Bob
• Application Number:
  US14/872,654
• Publication Number:
  US 20160105873A1
• Time in Patent Office: 824 Days
• Field of Search: None
• CPC Class Codes: H04L 1/0022 in which mode-switching is influenced by the user
• CPC Class Codes: H04L 1/1835 Buffer management
• CPC Class Codes: H04L 27/34 Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 28/0278 using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/54 based on quality criteria

Abstract

A method, an apparatus, and a computer-readable medium for wireless communication are provided. The apparatus may be a UE. The apparatus performs LBRM. Before performing LBRM, the apparatus reports a plurality of UE categories to an eNB. In addition, the apparatus determines whether signaling in relation to the UE categories is received from the eNB. In addition, the apparatus selects a UE category from the plurality of UE categories based on the reported UE categories and the signaling in relation to the UE categories. In addition, the apparatus determines a total number of soft channel bits to use for LBRM at the UE based on the selected UE category. Subsequently, the apparatus performs LBRM based on the determined total number of soft channel bits.

Claims

1. A method for performing limited buffer rate matching (LBRM) by a user equipment (UE), comprising:

reporting a plurality of UE categories to an evolved Node B (eNB);

determining whether signaling in relation to the UE categories indicates a particular channel quality information (CQI) table;

selecting a highest UE category from the plurality of UE categories when said signaling indicates the particular CQI table;

selecting a UE category other than the highest UE category from the plurality of UE categories when said signaling does not indicate the particular CQI table;

determining a total number of soft channel bits to use for LBRM at the UE based on the selected UE category; and

performing LBRM based on the determined total number of soft channel bits.

2. The method of claim 1, wherein the UE selects UE category 11 or UE category 12 from the plurality of UE categories when at least one of the UE category 11 or the UE category 12 is reported to the eNB, and said signaling is received from the eNB.

3. The method of claim 2, wherein the UE determines the total number of soft channel bits to use for LBRM at the UE based on the selected UE category 11 or the UE category 12.

4. The method of claim 1, wherein the UE category is selected further based on whether transmission mode 9 is configured for the UE when said signaling is not received from the eNB.

5. The method of claim 4, wherein the UE category 6 is selected when transmission mode 9 is configured for the UE and said signaling is not received from the eNB.

6. The method of claim 4, wherein the UE category 4 is selected when transmission mode 9 is unconfigured for the UE and said signaling is not received from the eNB.

7. The method of claim 1, further comprising determining whether the UE is configured with 256 quadrature amplitude modulation (QAM), wherein the signaling in relation to the UE categories is determined to be received from the eNB when the UE is configured with 256 QAM.

8. An apparatus for performing limited buffer rate matching (LBRM), the apparatus being a user equipment (UE), comprising:

a memory; and

at least one processor coupled to the memory and configured to;

report a plurality of UE categories to an evolved Node B (eNB);

determine whether signaling in relation to the UE categories indicates a particular channel quality information (CQI) table;

select a highest UE category from the plurality of UE categories when said signaling indicates the particular CQI table;

select a UE category other than the highest UE category from the plurality of UE categories when said signaling does not indicate the particular CQI table;

determine a total number of soft channel bits to use for LBRM at the UE based on the selected UE category; and

perform LBRM based on the determined total number of soft channel bits.

9. The apparatus of claim 8, wherein the UE selects UE category 11 or UE category 12 from the plurality of UE categories when at least one of the UE category 11 or the UE category 12 is reported to the eNB, and said signaling is received from the eNB.

10. The apparatus of claim 9, wherein the UE determines the total number of soft channel bits to use for LBRM at the UE based on the selected UE category 11 or the UE category 12.

11. The apparatus of claim 8, wherein the UE category is selected further based on whether transmission mode 9 is configured for the UE when said signaling is not received from the eNB.

12. The apparatus of claim 11, wherein the UE category 6 is selected when transmission mode 9 is configured for the UE and said signaling is not received from the eNB.

13. The apparatus of claim 11, wherein the UE category 4 is selected when transmission mode 9 is unconfigured for the UE and said signaling is not received from the eNB.

14. The apparatus of claim 8, wherein the at least one processor is further configured to determine whether the UE is configured with 256 quadrature amplitude modulation (QAM), wherein the signaling in relation to the UE categories is determined to be received from the eNB when the UE is configured with 256 QAM.

15. An apparatus for performing limited buffer rate matching (LBRM), the apparatus being a user equipment (UE), comprising:

means for reporting a plurality of UE categories to an evolved Node B (eNB);

means for determining whether signaling in relation to the UE categories indicates a particular channel quality information (CQI) table;

means for selecting a highest UE category from the plurality of UE categories when said signaling indicates the particular CQI table;

means for selecting a UE category other than the highest UE category from the plurality of UE categories when said signaling does not indicate the particular CQI table;

means for determining a total number of soft channel bits to use for LBRM at the UE based on the selected UE category; and

means for performing LBRM based on the determined total number of soft channel bits.

16. The apparatus of claim 15, wherein the UE selects UE category 11 or UE category 12 from the plurality of UE categories when at least one of the UE category 11 or the UE category 12 is reported to the eNB, and said signaling is received from the eNB.

17. The apparatus of claim 16, wherein the UE determines the total number of soft channel bits to use for LBRM at the UE based on the selected UE category 11 or the UE category 12.

18. The apparatus of claim 15, wherein the UE category is selected further based on whether transmission mode 9 is configured for the UE when said signaling is not received from the eNB.

19. The apparatus of claim 18, wherein the UE category 6 is selected when transmission mode 9 is configured for the UE and said signaling is not received from the eNB.

20. The apparatus of claim 18, wherein the UE category 4 is selected when transmission mode 9 is unconfigured for the UE and said signaling is not received from the eNB.

21. The apparatus of claim 15, further comprising means for determining whether the UE is configured with 256 quadrature amplitude modulation (QAM), wherein the signaling in relation to the UE categories is determined to be received from the eNB when the UE is configured with 256 QAM.

22. A non-transitory, computer-readable medium storing computer executable code for performing limited buffer rate matching (LBRM) by a user equipment (UE), comprising code for:

determining whether signaling in relation to the UE categories indicates a particular channel quality information (CQI) table;

selecting a highest UE category from the plurality of UE categories when said signaling indicates the particular CQI table;

selecting a UE category other than the highest UE category from the plurality of UE categories when said signaling does not indicate the particular CQI table;

determining a total number of soft channel bits to use for LBRM at the UE based on the selected UE category; and

performing LBRM based on the determined total number of soft channel bits.

23. The computer-readable medium of claim 22, wherein the UE selects UE category 11 or UE category 12 from the plurality of UE categories when at least one of the UE category 11 or the UE category 12 is reported to the eNB, and said signaling is received from the eNB.

24. The computer-readable medium of claim 23, wherein the UE determines the total number of soft channel bits to use for LBRM at the UE based on the selected UE category 11 or the UE category 12.

25. The computer-readable medium of claim 22, wherein the UE category is selected further based on whether transmission mode 9 is configured for the UE when said signaling is not received from the eNB.

26. The computer-readable medium of claim 25, wherein the UE category 6 is selected when transmission mode 9 is configured for the UE and said signaling is not received from the eNB.

27. The computer-readable medium of claim 25, wherein the UE category 4 is selected when transmission mode 9 is unconfigured for the UE and said signaling is not received from the eNB.

28. The computer-readable medium of claim 22, further comprising determining whether the UE is configured with 256 quadrature amplitude modulation (QAM), wherein the signaling in relation to the UE categories is determined to be received from the eNB when the UE is configured with 256 QAM.