Wireless Multi-Flow Communications in the Uplink
Methods and apparatus for controlling scheduling of uplink resources in a system where communication devices can communicate via a multiple of cells are dislosed. Scheduling weight information regarding a primary node and at least one secondary node can be determined and signalled by a node to at least one other node, for example to the at least one secondary node and/or at least one communication device. The received scheduling weight information can then be used in weighting of buffer status information before scheduling of uplink communications.
1 . A method for scheduling uplink resources in a node for a system where communication devices can communicate via a multiple of cells, comprising:
determining scheduling weight information regarding a primary node and at least one secondary node, and
signalling the scheduling weight information to at least one other node.
2 . A method according to claim 1 , comprising signalling the scheduling weight information from the primary node to the at least one secondary node and/or at least one communication device.
3 . A method according to claim 1 , wherein the scheduling weight information is for weighting buffer status information.
4 . A method according to claim 3 , comprising applying the scheduling weight information to buffer status reports.
5 . A method for communicating buffer status information by a device, comprising:
receiving scheduling weight information regarding a primary node and at least one secondary node,
weighting at least one buffer status report based on the scheduling weight information, and
sending the at least one weighted buffer status report.
6 . A method for controlling scheduling of uplink resources by a node for a system where communication devices can communicate via a multiple of cells, comprising:
obtaining scheduling weight information regarding a primary node and at least one secondary node,
receiving buffer status information from at least one communication device, and
scheduling uplink transmission based on the scheduling weight information and the buffer status information.
7 . A method according to claim 6 , wherein the obtaining of scheduling weight information comprises determining the information in the primary node.
8 . A method according to claim 6 , wherein the obtaining of scheduling weight information comprises receiving the information from the primary node.
9 . A method according to claim 1 , comprising determining scheduling weight information for a cell based on information about the uplink throughput of the cell.
10 . A method according to claim 6 , comprising estimating uplink data throughput that is available for scheduling by a node.
11 . A method according to claim 10 , comprising exchanging information about the estimated uplink data throughput between the primary node and the secondary node.
12 . A method according to claim 6 , comprising weighting buffering status reports from communication devices on a per cell basis and/or on a per communication device basis.
13 . A method according to claim 6 , wherein the weight information is determined based at on at least one of uplink signal to interference plus noise ratio (SINR), a configured uplink switching pattern between the nodes and load conditions in a relevant cell associated with the secondary node.
14 . An apparatus for controlling scheduling of uplink transmissions in a node for a system where communication devices can communicate via a multiple of cells, the apparatus comprising at least one processor, and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to
determine scheduling weight information regarding a primary node and at least one secondary node, and
cause signalling of the scheduling weight information to at least one other node.
15 . An apparatus according to claim 14 , configured to cause signalling of the scheduling weight information from the primary node to the at least one secondary node and/or at least one communication device.
16 . An apparatus according to claim 14 , configured to provide the scheduling weight information for weighting of buffer status information.
17 . An apparatus according to claim 16 , wherein the scheduling weight information is for weighing buffer status reports,
18 . An apparatus for controlling reporting of buffer status information by a device, the apparatus comprising at least one processor, and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to
receive scheduling weight information regarding a primary node and at least one secondary node,
weight at least one buffer status report based on the scheduling weight information, and
cause sending of the at least one weighted buffer status report.
19 . An apparatus for controlling scheduling of uplink re-sources by a node for a system where communication devices can communicate via a multiple of cells, the apparatus comprising at least one processor, and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to
obtain scheduling weight information regarding a primary node and at least one secondary node,
receive buffer status information from at least one communication device, and
schedule uplink transmission based on the scheduling weight information and the buffer status information.
20 . An apparatus according to claim 19 , configured to obtain the scheduling weight information by determining the information at the primary node.
21 . An apparatus according to claim 19 , configured to obtain the scheduling weight information by receiving the information from the primary node.
22 . An apparatus according to claim 14 , comprising determining scheduling weight information for a cell based on information about the uplink throughput of the cell.
23 . An apparatus according to claim 14 , configured to process estimates of uplink data throughput available for scheduling by a node.
24 . An apparatus according to claim 23 , configured to cause exchange of information about estimated uplink data throughput between the primary node and the secondary node.
25 . An apparatus according to claim 14 , configured to weight buffering status reports on a per cell basis and/or per communication device basis.
26 . A network node comprising the apparatus of claim 14 .
27 . A user equipment comprising the apparatus of claim 18 .
28 . A communication system comprising the apparatus of claim 14 .
29 . A computer program comprising code means adapted to perform the steps of claim 1 when the program is run on a processor.