Control information from macrocell to node, mapping data blocks to UE ID
A relay node receives a data block containing multiplexed data streams intended for multiple user equipment (UE) devices being served by the relay node. The relay node extracts the data streams from the data block and allocates them each to a separate narrowband channel that is associated with a particular UE device. The relay node repeatedly transmits the narrowband channels to the UE devices in a broadcast transmission that is transmitted for a predetermined number of repetitions. Each UE device decodes their own respective narrowband channel to obtain the data stream intended for the UE device associated with a particular narrowband channel. A feedback mechanism is utilized by the relay node to determine whether to retransmit a data packet or a new data packet in subsequent broadcast transmissions.
1. A method comprising:
receiving, at a relay node, a block of data and control information, the block of data containing a data stream for each of a plurality of user equipment (UE) devices;
using the control information to extract, from the block of data, the data stream for each of the plurality of UE devices; and
broadcasting a transmission comprising a plurality of narrowband channels such that each data stream, of the plurality of data streams, is transmitted in a different narrowband channel of the plurality of narrowband channels.
2. The method of claim 1 , wherein the control information is a bitmap.
3. The method of claim 1 , further comprising:
transmitting a predetermined number of repetitions value to the plurality of UE devices; and
repeatedly rebroadcasting the transmission for a predetermined number of repetitions indicated by the predetermined number of repetitions value.
4. The method of claim 1 , further comprising:
allocating a set of subcarriers to each narrowband channel of the plurality of narrowband channels such that each narrowband channel is allocated a different set of subcarriers.
5. The method of claim 1 , further comprising:
transmitting, to the plurality of UE devices, resource assignment information identifying resources assigned for transmitting each data stream in the broadcasted transmission.
6. The method of claim 1 , further comprising:
transmitting a paging message to the plurality of UE devices.
7. A relay node comprising:
a receiver configured to receive a block of data and control information, the block of data containing a plurality of data streams, each data stream for each user equipment (UE) device of a plurality of user equipment (UE) devices;
a controller configured to use the control information to extract, from the block of data, the plurality of data streams; and
a transmitter configured to broadcast a transmission comprising a plurality of narrowband channels such that each data stream, of the plurality of data streams, is transmitted in a different narrowband channel of the plurality of narrowband channels.
8. The relay node of claim 7 , wherein the control information is a bitmap.
9. The relay node of claim 7 , wherein the transmitter is configured to:
transmit a predetermined number of repetitions value to the plurality of UE devices; and
repeatedly rebroadcast the transmission for a predetermined number of repetitions indicated by the predetermined number of repetitions value.
10. The relay node of claim 9 , wherein the controller is further configured to determine the predetermined number of repetitions based on at least one downlink measurement report received from at least one of the plurality of UE devices.
11. The relay node of claim 7 , wherein the controller is configured to allocate a set of subcarriers to each narrowband channel of the plurality of narrowband channels such that each narrowband channel is allocated a different set of subcarriers.
12. The relay node of claim 7 , wherein the transmitter is further configured to transmit, to the plurality of UE devices, resource assignment information identifying resources assigned for transmitting each data stream in the broadcasted transmission.
13. The relay node of claim 7 , wherein the transmitter is further configured to transmit a paging message to the plurality of UE devices.
14. The relay node of claim 7 , wherein the transmitter is further configured to, in response to receipt of a negative-acknowledgment (NACK) feedback message from one of the plurality of UE devices, transmit a next Redundancy Version data packet to the UE device that sent the NACK feedback message.
15. The relay node of claim 14 , wherein the next Redundancy Version data packet contains Hybrid Automatic Repeat Request (HARQ) process information, including a Redundancy Version (RV) value.
16. A relay node comprising:
a receiver configured to receive a multiplexed block of data and to receive control information, the multiplexed block of data comprising a first data stream for a first user equipment (UE) device and a second data stream for a second UE device;
a controller configured to apply the control information to:
extract the first data stream and the second data stream from the multiplexed data block,
assign the first data stream to a first narrow band channel, and
assign the second data stream to a second narrowband channel; and
a transmitter configured to broadcast a transmission comprising the first narrowband channel and the second narrowband channel, the first narrowband channel comprising the first data stream and the second narrowband channel comprising the second data stream.