Central processing unit and methods for supporting coordinated multipoint transmission in an LTE network

摘要

Embodiments of a central processing unit and methods for supporting coordinated multi-point (CoMP) transmissions in a 3GPP LTE network with non-ideal backhaul links are generally described herein. In some embodiments, the CPU may be arranged for scheduling and assigning resources for subordinate enhanced node Bs (eNBs) over the backhaul links for CoMP transmissions. The scheduling may include an additional number of HARQ processes to compensate, at least in part, for backhaul link latency.

主权项

1. A method performed by a central processing unit (CPU) in a Third Generation Partnership Project Long Term Evolution (3GPP LTE) network, the method comprising:
scheduling and assigning resources for subordinate enhanced node Bs (eNBs) over backhaul links for coordinated multi-point (CoMP) transmissions, the scheduling including an additional number of hybrid automatic repeat request (HARQ) processes to compensate, at least in part, for backhaul link latency, wherein:
the scheduling comprises scheduling a number of subframes for transmission by the subordinate eNBs,the scheduling includes configuring downlink control information (DCI) to include a HARQ process number field with additional bits to indicate the additional number of HARQ processes, the number of subframes is indicated in the HARQ process number field, and each subframe is associated with one HARQ process, andfor frequency-division duplex (FDD) operation, the DCI is configured to include a HARQ process number field having four or more bits, and for time-division duplex (TDD) operation, the DCI is configured to include a HARQ process number field having five or more bits; and refraining from scheduling additional subframes for transmission by the subordinate eNBs until a free HARQ process number is available.