System and method for joint scheduling in dual-carrier wireless backhaul networks
First Claim
1. A method of joint scheduling in a dual-carrier fixed wireless network comprising a plurality of fixed nodes, said nodes comprising a plurality of Hub modules and a plurality of Remote modules with directional antenna, wherein each Hub module serves one or more Remote modules through Hub-Remote radio links, including non-line-of-sight (NLOS) Hub-Remote radio links, and operating with a primary carrier and a secondary carrier, comprising:
- for Hub modules and Remote modules configured for dual-carrier operation using the primary carrier and the secondary carrier, and wherein the primary carrier is a licensed band and the secondary carrier is a lower cost shared band or an unlicensed band, providing a frame structure wherein control signaling messages are carried on the primary carrier;
performing network entry for each Remote module on the primary carrier; and
performing carrier assignment wherein each Hub module transmits a broadcast frame on the primary carrier assigning each served Remote module to the primary carrier or the secondary carrier.
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Accused Products
Abstract
A system and method for joint scheduling in a dual-carrier fixed wireless backhaul network is disclosed, wherein the primary carrier is a licensed band, and the secondary carrier is a lower cost shared band or an unlicensed band. The network comprises a plurality of Hub modules, each serving a cluster of one or more Remote backhaul modules (RBMs). A special frame structure and a control channel on the primary carrier carries control signalling messages for RBMs assigned to either the primary or secondary carrier. RBMs with a performance metric, such a spectral efficiency, above a threshold are assigned to the primary carrier. Other RBMs are assigned the secondary carrier, and a channel assignment is then performed. A transmission mode is determined based on instantaneous channel conditions, to optimize overall system performance across a network neighborhood and meet RBM quality of service requirements. A centralized server/processing unit co-ordinates dual carrier joint scheduling functions.
20 Citations
20 Claims
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1. A method of joint scheduling in a dual-carrier fixed wireless network comprising a plurality of fixed nodes, said nodes comprising a plurality of Hub modules and a plurality of Remote modules with directional antenna, wherein each Hub module serves one or more Remote modules through Hub-Remote radio links, including non-line-of-sight (NLOS) Hub-Remote radio links, and operating with a primary carrier and a secondary carrier, comprising:
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for Hub modules and Remote modules configured for dual-carrier operation using the primary carrier and the secondary carrier, and wherein the primary carrier is a licensed band and the secondary carrier is a lower cost shared band or an unlicensed band, providing a frame structure wherein control signaling messages are carried on the primary carrier; performing network entry for each Remote module on the primary carrier; and performing carrier assignment wherein each Hub module transmits a broadcast frame on the primary carrier assigning each served Remote module to the primary carrier or the secondary carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification