Group-based machine to machine communication
View Patent ↗Methods and apparatus are provided for performing group-based machine-to-machine (M2M) communication. Machine-type communication (MTC) wireless transmit/receive units (WTRUs) may operate in M2M groups. MTC WTRUs belonging to the same M2M group may receive a broadcast message with a time window on a channel dedicated for receiving data directed to an M2M group. The MTC WTRUs may wake up during the time window and may receive data directed to an M2M group on a dedicated channel. The broadcast message may be broadcasted via a broadcast server upon a request from an MTC server. The time window is allocated upon a request from an MTC server on behalf of the M2M group.
1. A machine-type communication (MTC) server for performing group-based communication, the MTC server comprising:
a processor configured to:
send a radio resource request for communicating with an MTC group that comprises a plurality of MTC wireless transmit/receive units (WTRUs);
receive an indication of radio resources allocated for the MTC group, wherein the radio resources allocated for the MTC group comprises a channel that is dedicated to the MTC group for sending data in an uplink, and the indication of radio resources indicates a time window during which the channel is dedicated to the MTC group for sending data in the uplink;
send, to a first MTC WTRU in the MTC group, information indicative of the radio resources allocated for the MTC group and a first time slot within the time window allocated to the first MTC WTRU; and
send, to a second MTC WTRU in the MTC group, information indicative of the radio resources allocated for the MTC group and a second time slot within the time window allocated to the second MTC WTRU.
2. The MTC server of claim 1 , wherein the processor is further configured to:
allocate the first time slot to the first MTC WTRU in the MTC group for uplink communication; and
allocate the second time slot to the second MTC WTRU in the MTC group for uplink communication.
3. The MTC server of claim 1 , wherein the processor is further configured to:
receive a first data from the first MTC WTRU during the first time slot via the channel that is dedicated to the MTC group; and
receive a second data from the second MTC WTRU during the second time slot via the channel that is dedicated to the MTC group.
4. The MTC server of claim 1 , wherein the processor is further configured to:
determine an amount of radio resources needed for the MTC group to send the data in the uplink; and
include an indication of the determined amount of radio resources in the radio resource request.
5. A method for a machine-type communication (MTC) server to perform group-based communication, the method comprising:
sending a radio resource request for communicating with an MTC group that comprises a plurality of MTC wireless transmit/receive units (WTRUs);
receiving an indication of radio resources allocated for the MTC group, wherein the radio resources allocated for the MTC group comprises a channel that is dedicated to the MTC group for sending data in an uplink, and the indication of radio resources indicates a time window during which the channel is dedicated to the MTC group for sending data in the uplink;
sending, to a first MTC WTRU in the MTC group, information indicative of the radio resources allocated for the MTC group and a first time slot within the time window allocated to the first MTC WTRU; and
sending, to a second MTC WTRU in the MTC group, information indicative of the radio resources allocated for the MTC group and a second time slot within the time window allocated to the second MTC WTRU.
6. The method of claim 5 , further comprising:
allocating the first time slot to the first MTC WTRU in the MTC group for uplink communication; and
allocating the second time slot to the second MTC WTRU in the MTC group for uplink communication.
7. The method of claim 5 , further comprising:
receiving a first data from the first MTC WTRU during the first time slot via the channel that is dedicated to the MTC group; and
receiving a second data from the second MTC WTRU during the second time slot via the channel that is dedicated to the MTC group.
8. The method of claim 5 , further comprising:
determining an amount of radio resources needed for the MTC group to send the data in the uplink; and
including an indication of the determined amount of radio resources in the radio resource request.
9. A machine-type communication (MTC) server for performing group-based communication, the MTC server comprising:
a processor configured to:
send, to a core network, a radio resource request associated with an MTC group that comprises a plurality of MTC wireless transmit/receive units (WTRUs);
receive an indication of radio resources allocated for the MTC group to receive data via a radio access network, wherein the radio resources allocated for the MTC group is dedicated to the MTC group during a time window; and
send a group message to the MTC WTRUs in the MTC group via the radio resources allocated for the MTC group during the time window.
10. The MTC server of claim 9 , wherein the radio resources allocated for the MTC group comprises a channel for the MTC group to receive data directed to the MTC group during the time window.
11. A machine-type communication (MTC) server for performing group-based communication, the MTC server comprising:
a processor configured to:
send a radio resource request associated with an MTC group that comprises a plurality of MTC wireless transmit/receive units (WTRUs);
receive an indication of radio resources allocated for the MTC group to receive data via a radio access network, wherein the radio resources allocated for the MTC group is dedicated to the MTC group during a time window;
send, to the MTC WTRUs in the MTC group, information indicative of the time window and the radio resources allocated for the MTC group; and
send a group message to the MTC WTRUs in the MTC group via the radio resources allocated for the MTC group during the time window.
12. The MTC server of claim 11 , wherein the radio resources allocated for the MTC group comprises a channel for the MTC group to receive data directed to the MTC group during the time window.
13. The MTC server of claim 11 , wherein the radio resource request is sent to a core network.
14. A method for a machine-type communication (MTC) server to perform group-based communication, the method comprising:
sending, to a core network, a radio resource request associated with an MTC group that comprises a plurality of MTC wireless transmit/receive units (WTRUs);
receiving an indication of radio resources allocated for the MTC group to receive data via a radio access network, wherein the radio resources allocated for the MTC group is dedicated to the MTC group during a time window; and
sending a group message to the MTC WTRUs in the MTC group via the radio resources allocated for the MTC group during the time window.
15. The method of claim 14 , wherein the radio resources allocated for the MTC group comprises a channel for the MTC group to receive data directed to the MTC group during the time window.
16. A method for a machine-type communication (MTC) server to perform group-based communication, the method comprising:
sending a radio resource request associated with an MTC group that comprises a plurality of MTC wireless transmit/receive units (WTRUs);
receiving an indication of radio resources allocated for the MTC group to receive data via a radio access network, wherein the radio resources allocated for the MTC group is dedicated to the MTC group during a time window;
sending, to the MTC WTRUs in the MTC group, information indicative of the time window and the radio resources allocated for the MTC group; and
sending a group message to the MTC WTRUs in the MTC group via the radio resources allocated for the MTC group during the time window.
17. The method of claim 16 , wherein the radio resources allocated for the MTC group comprises a channel for the MTC group to receive data directed to the MTC group during the time window.
18. The method of claim 16 , wherein the radio resource request is sent to a core network.