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US 8,942,713 B2Granted
Method and apparatus for allocating resources in a multicast/broadcast communications system
AssigneeQUALCOMM Incorporated
InventorsNathan Edward Tenny, Masato Kitazoe, Francesco Grilli
Life of this patent
Estimating the term…
Abstract
Methods, systems and apparatus for dispersing a group of user equipment (UEs) concentrated on a single channel is disclosed. After receiving a disperse command the UEs select a channel, and then select a cell. The channel selection may be performed using a random or pseudorandom function. The cell selection may be performed prior to camping on the cell. Prior to camping the UEs may test the acceptability of a candidate cell and/or may perform a cell reselection. The result of the dispersion is that the UEs are distributed amongst many channels (a, b, c, and d), where reference are found in FIGS. 1A and 1B.
Claims26
A remote station apparatus comprising:
- a communication circuit configured to:
- receive an MBMS point-to-multipoint session on a current channel;
- and receive a disperse command from a base station at the end of the MBMS point-to-multipoint session, wherein the disperse command is broadcast from the base station to all remote stations congregated on and wirelessly receiving broadcast data on the same channel;
- a channel selector configured to select a channel from a plurality of channels including the current channel in response to the disperse command, the selection being based at least in part on a hash function for pseudorandomly selecting a channel among the plurality of channels including the current channel so as to evenly distribute the remote stations amongst the plurality of channels;
- and a cell selector configured to select a cell based at least in part on the selected channel and a characteristic of the cell and a suitability test.
2 more elements
A remote station apparatus comprising:
- a communication circuit configured to:
- receive an MBMS point-to-multipoint session on a current channel;
- and receive a disperse command from a base station at the end of the MBMS point-to-multipoint session, wherein the disperse command is broadcast from the base station to all remote stations congregated on the same channel and receiving communication link data;
- a channel selector configured to select a channel from a plurality of channels including the current channel in response to the disperse command, the selection being based at least in part on a hash function for pseudorandomly selecting a channel among the plurality of channels including the current channel so as to evenly distribute the remote stations amongst the plurality of channels;
- and
- a cell selector configured to select a first cell based at least in part on the selected channel and a characteristic of the first cell and a suitability test, and to select a camping cell based at least in part on the selected channel and the first cell and the suitability test, wherein the cell selector is further configured to select the camping cell before camping on any cell.
3 more elements
A wireless communication system comprising:
- a plurality of base stations, each configured to:
- broadcast a point-to-multipoint session on a current channel;
- and broadcast a disperse command at the end of the MBMS point-to-multipoint session to all remote stations congregated on and wirelessly receiving broadcast data on the same channel in order to initiate remote station dispersion, wherein the disperse command instructs a plurality of remote stations to select a channel from a plurality of channels including the current channel and to select a cell, the selection of the channel being based at least in part on a hash function for pseudorandomly selecting a channel among the plurality of channels including the current channel so as to evenly distribute the remote stations amongst the plurality of channels, and the selection of the cell being based at least in part on the selected channel and a characteristic of the cell and a suitability test.
A wireless communication system comprising:
- a plurality of base stations, each configured to:
- broadcast a point-to-multipoint session on a current channel;
- and
- broadcast a disperse command at the end of the MBMS point-to-multipoint session to all remote stations congregated on and wirelessly receiving broadcast data on the same channel in order to initiate remote station dispersion, wherein the disperse command instructs a plurality of remote stations to select a channel from a plurality of channels including the current channel based at least in part on a hash function for pseudorandomly selecting a channel among the plurality of channels including the current channel so as to evenly distribute the remote stations amongst the plurality of channels, and further to select a first cell based at least in part on the selected channel and a characteristic of the first cell, and to select a camping cell based at least in part on the channel and the first cell, wherein each of the remote stations is further configured to select the camping cell before camping on any cell.
1 more element
A method of responding to a disperse command, the method comprising:
- receiving an MBMS point-to-multipoint session on a current channel;
- receiving the disperse command from a base station at the end of the MBMS point-to- multipoint session, wherein the disperse command is broadcast from the base station to all remote stations congregated on and wirelessly receiving broadcast data on the same channel;
- selecting a channel from a plurality of channels including the current channel in response to the disperse command, the selection being based at least in part on a hash function for pseudorandomly selecting a channel among the plurality of channels including the current channel so as to evenly distribute the remote stations amongst the plurality of channels;
- and
- selecting a cell based at least in part on the selected channel and a characteristic of the cell and a suitability test.
2 more elements
A method of responding to a disperse command, the method comprising:
- receiving an MBMS point-to-multipoint session on a current channel;
- receiving the disperse command from a base station at the end of the MBMS point-to- multipoint session, wherein the disperse command is broadcast from the base station to all remote stations congregated on and wirelessly receiving broadcast data on the same channel;
- selecting a channel from a plurality of channels including the current channel in response to the disperse command, the selection being based at least in part on a hash function for pseudorandomly selecting a channel among the plurality of channels including the current channel so as to evenly distribute the remote stations amongst the plurality of channels;
- selecting a first cell based at least in part on the selected channel and a characteristic of the first cell and a suitability test;
- and
- selecting a camping cell based at least in part on the selected channel and the first cell and the suitability test, wherein the camping cell is selected before camping on any cell.
3 more elements
Dependencies are inferred from the claim text.