Relay and hierarchical transmission scheme
View Patent ↗In some examples, a method of transmitting data in a radio communication system is described. The method can include dividing data intended for a communication receive node into a high priority code stream and a low priority code stream. The method can also include transmitting the high priority code stream to the communication receive node and a relay node. The method can also include transmitting the low priority code stream to the communication receive node. The relay node may be configured to receive, amplify and forward the high priority code stream to the communication receive node. The communication receive node may be configured to receive the high priority code stream substantially during first time intervals and may be further configured to receive both the low priority code stream and the amplified high priority code stream substantially during second time intervals interleaved with the first time intervals.
1. A method of transmitting data in a radio communication system, the method comprising:
dividing data intended for a communication receive node into a high priority code stream and a low priority code stream;
transmitting the high priority code stream to the communication receive node and a relay node; and
transmitting the low priority code stream to the communication receive node;
wherein:
the relay node is configured to receive, amplify and forward the high priority code stream to the communication receive node; and
the communication receive node is configured to receive the high priority code stream substantially during first time intervals and is further configured to receive both the low priority code stream and the amplified high priority code stream substantially during second time intervals interleaved with the first time intervals.
2. The method of claim 1 , wherein the data is divided into the high priority and low priority code streams and the high priority and low priority code streams are transmitted by a communication transmit node.
3. The method of claim 1 , wherein the high priority code stream is configured to ensure basic communication service for the communication receive node.
4. The method of claim 3 , wherein the low priority code stream is configured to enhance communication service for the communication receive node.
5. The method of claim 1 , wherein:
transmitting the high priority code stream to the communication receive node and a relay node includes transmitting data included in the high priority code stream during the first time intervals; and
transmitting the low priority code stream to the communication receive node includes transmitting data included in the low priority code stream during the second time intervals.
6. A non-transitory computer-readable storage medium having computer-executable instructions stored thereon that are executable by a computing device to perform operations comprising:
dividing data intended for a communication receive node into a high priority code stream and a low priority code stream;
transmitting the high priority code stream to the communication receive node and a relay node; and
transmitting the low priority code stream to the communication receive node;
wherein:
the relay node is configured to amplify and forward the high priority code stream to the communication receive node; and
the communication receive node is configured to receive the high priority code stream substantially during first time intervals and is further configured to receive both the low priority code stream and the amplified high priority code stream substantially during second time intervals interleaved with the first time intervals.
7. The non-transitory computer-readable storage medium of claim 6 , wherein the computing device is included in a communication transmit node.
8. The non-transitory computer-readable storage medium of claim 7 , wherein the communication transmit node comprises a base station or an evolved Node B.
9. The non-transitory computer-readable storage medium of claim 6 , wherein the high priority code stream is configured to ensure basic communication service for the communication receive node.
10. The non-transitory computer-readable storage medium of claim 6 , wherein the low priority code stream is configured to enhance communication service for the communication receive node.
11. The non-transitory computer-readable storage medium of claim 6 , wherein:
transmitting the high priority code stream to the communication receive node and a relay node includes transmitting data included in the high priority code stream during the first time intervals; and
transmitting the low priority code stream to the communication receive node includes transmitting data included in the low priority code stream during the second time intervals.
12. A method of receiving data in a radio communication system, the method comprising:
receiving, substantially during first time intervals, a high priority code stream from a communication transmit node;
receiving, substantially during second time intervals, a low priority code stream from the communication transmit node; and
receiving, substantially during the second time intervals, an amplified high priority code stream from a relay node.
13. The method of claim 12 , further comprising separating the amplified high priority code stream from the low priority code stream.
14. The method of claim 13 , wherein separating the amplified high priority code stream from the low priority code stream includes performing a minimum mean squared error analysis of the received low priority code stream and the amplified high priority code stream.
15. The method of claim 12 , wherein the high priority code stream is configured to ensure basic communication service for a communication receive node that receives the high priority code stream.
16. The method of claim 15 , wherein the low priority code stream is configured to enhance communication service for the communication receive node.
17. The method of claim 12 , wherein receiving the high priority code stream substantially during the first time intervals and an amplified high priority code stream substantially during the second time intervals provides time diversity for data included in the high priority code stream.
18. A non-transitory computer-readable storage medium having computer-executable instructions stored thereon that are executable by a computing device to perform operations comprising:
receiving, substantially during first time intervals, a high priority code stream from a communication transmit node;
receiving, substantially during second time intervals, a low priority code stream from the communication transmit node; and
receiving, substantially during the second time intervals, an amplified high priority code stream from a relay node.
19. The non-transitory computer-readable storage medium of claim 18 , wherein the computing device is included in a communication receive node.
20. The non-transitory computer-readable storage medium of claim 19 , wherein the communication receive node comprises a mobile phone, a smartphone, or a laptop computer.
21. The non-transitory computer-readable storage medium of claim 18 , wherein the operations further comprise separating the amplified high priority code stream from the low priority code stream.
22. The non-transitory computer-readable storage medium of claim 21 , wherein separating the amplified high priority code stream from the low priority code stream includes performing a minimum mean squared error analysis of the received low priority code stream and amplified high priority code stream.
23. The non-transitory computer-readable storage medium of claim 18 , wherein the high priority code stream is configured to ensure basic communication service for a communication receive node that receives the high priority code stream.
24. The non-transitory computer-readable storage medium of claim 23 , wherein the low priority code stream is configured to enhance communication service for the communication receive node.
25. A radio communication system comprising:
a communication transmit node configured to divide data into a high priority code stream and a low priority code stream and to transmit the high priority and low priority code streams;
a relay node configured to receive, amplify and forward the high priority code stream; and
a communication receive node configured to:
receive the high priority code stream from the communication transmit node substantially during first time intervals;
receive the low priority code stream from the communication transmit node substantially during second time intervals; and
receive the amplified high priority code stream from the relay node substantially during the second time intervals.
26. The radio communication system of claim 25 , wherein a transmit power of the communication transmit node is about 35 dBm.
27. The radio communication system of claim 25 , wherein a transmit power of the relay node is about 20 dBm.
28. The radio communication system of claim 25 , wherein a signal to noise ratio in the radio communication system is about 18 dB.
29. The radio communication system of claim 25 , wherein r is a maximum transmission distance from the communication transmit node, further wherein a capacity of the radio communication system at a distance greater than about 0.75 r is in a range of 10% to 50% higher than in a radio communication system lacking the relay node.
30. The radio communication system of claim 29 , wherein a distance between the communication transmit node and the relay node is about 0.5 r.
31. The radio communication system of claim 25 , wherein the communication transmit node comprises a base station or an evolved Node B.
32. The radio communication system of claim 25 , wherein the communication receive node comprises a mobile phone, a smartphone, or a laptop computer.