Method and apparatus for facilitating transmissions in a wireless communication system
AssigneeSierra Wireless, Inc.
InventorsGustav Gerald Vos, Gautham Prasad
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Abstract
There is provided methods and associated base station and user equipment, for facilitating transmissions in a wireless communication system. The mapping between an index and its corresponding HARQ ID or HARQ ID & NDI pair can be done using one or more equations relating the two entities. The equations can be defined in two configurations, one for encoding HARQ ID or HARQ ID & NDI pair and a second for decoding the encoded HARQ ID or HARQ ID & NDI pair to determine the HARQ ID or HARQ ID and NDI.
Claims16
A method for facilitating transmissions in a wireless communication system, the method comprising:
- receiving by a user equipment (UE), an index indicative of one or more hybrid automatic repeat request identifiers (HARQ IDs) for use during transmissions, the index defined using a constant, C, and a sum of binomial coefficient function;
- determining, by the UE, the one or more HARQ IDs from the index;
- and
- transmitting, by the UE, a transmission using the one or more HARQ IDs;
- wherein the index is defined by:
- Index′=C+sum(nchoosek(HARQ_Max−HARQ(n−i),Mi)
- where:
- n=the number of HARQ processes to be scheduled;
- i=0 to n−1;
- HARQ_Max=the maximum number of HARQ processes;
- HARQ(i)=the HARQ ID of the i′th HARQ process scheduled and has values in the range {0, HARQ_Max−1};
- Mi=n−i;
- C=a scalar constant;
- nchoosek(n,k.)=the binomial coefficient function;
- wherein if (n−k)<0, nchoosek(n−k) returns 0.
A user equipment (UE) comprising:
- a processor;
- and
- machine readable memory storing machine executable instructions which when executed by the processor configure the base station to:
- receive an index indicative of one or more hybrid automatic repeat identifiers (HARQ IDs) for use during transmissions, the index defined using a constant, C, and a sum of a binomial coefficient function;
- determine the one or more HARQ IDs from the index;
- and
- transmit a transmission using the one or more HARQ IDs;
- wherein the index is defined by:
- Index′=C+sum(nchoosek(HARQ_Max−HARQ(n−i),Mi)
- where:
- n=the number of HARQ processes to be scheduled;
- i=0 to n−1;
- HARQ_Max=the maximum number of HARQ processes;
- HARQ(i)=the HARQ ID of the i′th HARQ process scheduled and has values in the range {0, HARQ_Max−1};
- Mi=n−i;
- C=a scalar constant;
- nchoosek(n,k.)=the binomial coefficient function;
- wherein if (n−k)<0, nchoosek(n−k) returns 0.
Dependencies are inferred from the claim text.