HARQ HANDLING AT RELAY NODE RECONFIGURATION
First Claim
1. A method of operating a radio access network comprising a donor base station node and a relay base station node, the relay base station node participating in communications across a first radio interface with a wireless terminal and also participating in communications over a backhaul link across a second radio interface, the second radio interface reusing at least some functionality, the method comprising:
- configuring a subframe configuration pattern, the subframe configuration pattern being arranged to specify which subframe(s) of a frame structure may be utilized for the backhaul link; and
as a result thereof,making a HARQ process state in a HARQ process at one of the base station nodes known by the other base station node.
3 Assignments
0 Petitions
Accused Products
Abstract
A radio access network comprises a donor base station node (29) and a relay base station node (20). The relay base station node (29) participates in communications across a first radio interface with a wireless terminal (30) and also participates in communications over a backhaul link across a second radio interface, the second radio interface reusing at least some functionality of the first interface. The donor base station node (28) configures a subframe configuration pattern. The subframe configuration pattern is arranged to specify which subframe(s) of a frame structure may be utilized for the backhaul link. As a result of subframe configuration, a HARQ process state in a HARQ process at one of the base station nodes is known by the other base station node by any of several operational modes.
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Citations
42 Claims
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1. A method of operating a radio access network comprising a donor base station node and a relay base station node, the relay base station node participating in communications across a first radio interface with a wireless terminal and also participating in communications over a backhaul link across a second radio interface, the second radio interface reusing at least some functionality, the method comprising:
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configuring a subframe configuration pattern, the subframe configuration pattern being arranged to specify which subframe(s) of a frame structure may be utilized for the backhaul link; and
as a result thereof,making a HARQ process state in a HARQ process at one of the base station nodes known by the other base station node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A donor base station node of a radio access network which participates in communications over a backhaul link across a radio interface with a relay base station, the node comprising a processor arranged:
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to configure a subframe configuration pattern, the subframe configuration pattern being arranged to specify which subframe(s) of a frame structure may be utilized for the backhaul link and which subframes(s) of the frame structure may be utilized for communications between the relay base station and a wireless terminal; in response to configuration of the subframe configuration pattern, to make a HARQ process state in a HARQ process at one of the base station nodes known by the other base station node. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A relay base station node of a radio access network which participates in communications over a backhaul link across a radio interface with a donor base station node, the relay base station node comprising:
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a transceiver configured to receive an indication of a change in a subframe configuration pattern, the subframe configuration pattern being arranged to specify which subframe(s) of a frame structure may be utilized for the backhaul link and which subframes(s) of the frame structure may be utilized for communications between the relay base station and a wireless terminal; a processor configured, in response to the received indication, to make a HARQ process state in a HARQ process at one of the base station nodes known by the other base station node. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification