Sharing of radio resources between a backhaul link and a radio access network

摘要

Systems and methods are presented for effectively sharing a plurality of radio transceiver chains between a Backhaul link and a Radio Access Network (RAN), in which there is a wireless Base Station (BS) with some number of radio transceiver chains, the system initially allocates such chains between the Backhaul link and the RAN according to some criterion, the system dynamically monitors the performance of the Backhaul link and RAN to detect any deficiencies in desired levels of performance, and the system then reallocates the radio transceiver chains between the Backhaul link and the RAN in a manner calculated to help achieve the desired levels of performance. Optionally and in various embodiments, the digital signals to and from the Backhaul link, or to and from the RAN, may be MIMO signals, MRC signals, MMSE signals, or ML signals.

主权项

1. A wireless base station system to split a plurality of radio transceiver chains between a backhaul link and a radio access network, comprising:
a baseband subsystem comprising N digital ports to synthesize N digital baseband signals; and N radio transceiver chains, each connects to one of the N digital ports of the baseband subsystem via an analog-digital interface; wherein the system:
splits the N radio transceiver chains into a first set of K radio transceiver chains and a second sets of N minus K radio transceiver chains;synthesizes, by the baseband subsystem, the N digital baseband signals according to the split, such that K digital baseband signals are operative to support a backhaul link, and N minus K digital baseband signals are operative to support a radio access network; andinputs the N digital baseband signals to the N radio transceiver chains via the corresponding N digital ports and the corresponding analog-digital interfaces, thereby transmitting both the backhaul link and the radio access network, further wherein at least two of the N digital baseband signals driving at least two of the radio transceiver chains comprise at least two phased-array signals, thereby transmitting at least one of (i) the backhaul link and (ii) the radio access network using a phased-array scheme comprising the at least two of the radio transceiver chains.