Apparatus and Method for Communication

• US 20130051383A1
• Filed: 08/26/2011
• Published: 02/28/2013
• Est. Priority Date: 08/26/2011
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Renesas Mobile Corporation (Renesas Electronics Corporation)
• Inventors: Hakola, Sami-Jukka, Koskela, Timo, Turtinen, Samuli
• Granted Patent: US 8,867,521 B2
• Time in Patent Office: Days
• US Class Current: 370/350
• CPC Class Codes: H04B 1/713 using frequency hopping

Abstract

Apparatus and method for communication are provided. The solution includes controlling the communication of a transceiver on shared data channels using a data channel slot including a sensing period and a data period and controlling a transceiver to communicate on common and dedicated control channels on a shared spectrum using control channel slots, each control channel slot including a downlink part and an uplink part, wherein the uplink part occurs at the same time as the sensing period of a data channel slot.

Claims

1. An apparatus in a communication system, comprising:

at least one processor; and

at least one memory including computer program code,

the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform;

control the communication of a transceiver on shared data channels using a data channel slot comprising a sensing period and a data period;

control a transceiver to communicate on common and dedicated control channels on a shared spectrum using control channel slots, each control channel slot comprising a downlink part and an uplink part, wherein the uplink part occurs at the same time as the sensing period of a data channel slot.

2. The apparatus of claim 1, the apparatus being configured to

control the transmission of a transceiver on shared data channels using a downlink data channel slot by sensing traffic of the data channel during a sensing period of the data channel slot and making a decision whether to transmit or not during a data period of the data channel slot on the basis of the sensing;

control a transceiver to communicate on common and dedicated control channels on a shared spectrum using control channel slots, each control channel slot being associated with a downlink data channel slot and comprising a downlink part and an uplink part, wherein the uplink part occurs at the same time as the sensing period.

3. The apparatus of claim 2, the apparatus being configured to control the transceiver to transmit in predetermined control channel slots a broadcast control channel prior synchronization symbols in the end of the downlink part of the control channel slot.

4. The apparatus of claim 3, wherein the control channel slots comprising a downlink part and an uplink part except the predetermined control channel slots comprise a transition period between the downlink part and the uplink.

5. The apparatus of claim 2, wherein the downlink part of the control channel slots comprise downlink scheduling commands and uplink data transmission opportunity scheduling commands.

6. The apparatus of claim 1, wherein the uplink part of a control channel slot is in the beginning of the control channel slot.

7. The apparatus of claim 1, wherein the uplink part of a control channel slot is in the end of the control channel slot and the transmission of the control channel slot starts at the same time as the data period of the associated downlink data channel slot and the uplink part of the control channel slot occurs at the same time as the sensing period of the next data channel slot.

8. The apparatus of claim 1, the apparatus being configured to control the transceiver to map common and dedicated control channels on two frequency blocks wherein the transmission of the frequency blocks utilize pair-wise frequency hopping on a shared spectrum.

9. The apparatus of claim 8, the apparatus being configured to control the transceiver to utilise more than one non-overlapping frequency resources in when transmitting the two frequency blocks utilising pair-wise frequency hopping.

10. The apparatus of claim 1, the apparatus being configured to

control a transceiver to receive downlink control channels during the downlink part of the control channel slot and transmit uplink control channels using the uplink part of the control channel slot;

control a transceiver to receive a scheduling command from a base station for uplink transmission opportunity using a given uplink data channel slot;

control the communication of a transceiver on shared data channels using the given uplink data channel slot by sensing traffic of the data channel during a sensing period of the data channel slot and making a decision whether to transmit or not during a data period of the data channel slot on the basis of the sensing.

11. The apparatus of claim 1, the apparatus being configured to refrain from transmitting on the uplink part of control channel slots occurring at the same time as uplink data channel slot.

12. The apparatus of claim 10, the apparatus being configured to transmit control channel slots comprising only an uplink part when transmitting an uplink data channel slot.

13. A method in a communication system, comprising:

controlling the communication of a transceiver on shared data channels using a data channel slot comprising a sensing period and a data period;

controlling a transceiver to communicate on common and dedicated control channels on a shared spectrum using control channel slots, each control channel slot comprising a downlink part and an uplink part, wherein the uplink part occurs at the same time as the sensing period of a data channel slot.

14. The method of claim 13, further comprising:

controlling the transmission of a transceiver on shared data channels using a downlink data channel slot by sensing traffic of the data channel during a sensing period of the data channel slot and making a decision whether to transmit or not during a data period of the data channel slot on the basis of the sensing;

controlling a transceiver to communicate on common and dedicated control channels on a shared spectrum using control channel slots, each control channel slot being associated with a downlink data channel slot and comprising a downlink part and an uplink part, wherein the uplink part occurs at the same time as the sensing period.

15. The method of claim 14, further comprising:

controlling the transceiver to transmit in predetermined control channel slots a broadcast control channel prior synchronization symbols in the end of the downlink part of the control channel slot.

16. The method of claim 14, wherein the control channel slots comprising a downlink part and an uplink part except the predetermined control channel slots comprise a transition period between the downlink part and the uplink.

17. The method of claim 14, wherein the uplink part of a control channel slot is in the beginning of the control channel slot.

18. The method of claim 14, wherein the uplink part of a control channel slot is in the end of the control channel slot and the transmission of the control channel slot starts at the same time as the data period of the associated downlink data channel slot and the uplink part of the control channel slot occurs at the same time as the sensing period of the next data channel slot.

19. The method of claim 13, further comprising:

controlling a transceiver to receive downlink control channels during the downlink part of the control channel slot and transmit uplink control channels using the uplink part of the control channel slot;

controlling a transceiver to receive a scheduling command from a base station for uplink transmission opportunity using a given uplink data channel slot;

controlling the communication of a transceiver on shared data channels using the given uplink data channel slot by sensing traffic of the data channel during a sensing period of the data channel slot and making a decision whether to transmit or not during a data period of the data channel slot on the basis of the sensing.

20. The method of claim 19, further comprising:

refraining from transmitting on the uplink part of control channel slots occurring at the same time as uplink data channel slot.

21. The method of claim 20, further comprising:

transmitting control channel slots comprising only an uplink part when transmitting an uplink data channel slot.

22. A computer program product embodied on a distribution medium readable by a computer and comprising program instructions which, when loaded into an apparatus, execute a computer process comprising:

controlling the communication of a transceiver on shared data channels using a data channel slot comprising a sensing period and a data period;

controlling a transceiver to communicate on common and dedicated control channels on a shared spectrum using control channel slots, each control channel slot comprising a downlink part and an uplink part, wherein the uplink part occurs at the same time as the sensing period of a data channel slot.