التفاصيل البيبلوغرافية
| العنوان: |
L1 CONTROL SIGNALING FOR UTRAN HSDPA |
| Document Number: |
20100316159 |
| تاريخ النشر: |
December 16, 2010 |
| Appl. No: |
12/525922 |
| Application Filed: |
January 31, 2008 |
| مستخلص: |
A Level-1 (L1) signaling flag is mapped to unused (invalid) bit sequences in Part 1 of the HS-SCCH—that is, Part 1 bit encodings that are not defined in the UTRAN specifications—and a corresponding L1 command is encoded in Part 2. This allows UE to detect early that the HS-SCCH is pure L1 signaling, and the UE may avoid wasting power by not processing an accompanying HS-PDSCH. Alternatively, in CPC HS-SCCH-less mode, the UE may blind decode the HS PDSCH. In one embodiment, a general DRX mode is defined and controlled via L1 signaling. In one embodiment, a UE acknowledgement improves the L1 signaling accuracy. In one embodiment, a L1 signal and UE acknowledgement protocol are utilized to “ping” a UE. |
| Inventors: |
Bo, Göransson (Sollentuna, SE); Johan, Bergman (Kista, SE); Dirk, Gerstenberger (Stockholm, SE); Janne, Peisa (Espoo, FI) |
| Claim: |
1. A method of transmitting level-1 signaling from a Node B to User Equipment (UE) in a UTRAN wireless communication network, comprising: encoding an L1 signaling flag in Part 1 of a High Speed Shared Control Channel (HSSCCH); encoding an L1 signal in Part 2 of the HS-SCCH; and transmitting the HS-SCCH to one or more UE. |
| Claim: |
2. The method of claim 1 wherein encoding an L1 signaling flag in Part 1 of a HS-SCCH comprises mapping the L1 signal to an unspecified encoding of the HS-SCCH Part 1. |
| Claim: |
3. The method of claim 1 wherein the L1 signal controls the activation or deactivation of a Discontinuous Transmission (DTX) or Discontinuous Reception (DRX) mode in the UE. |
| Claim: |
4. The method of claim 1 wherein the L1 signal controls the use of multiple-input, multiple output (MIMO) modes in the UE. |
| Claim: |
5. The method of claim 1 wherein the L1 signal controls the activation or deactivation of Continuous Packet Connectivity (CPC) mode in the UE. |
| Claim: |
6. The method of claim 1 further comprising awaiting an acknowledgement of the L1 signal from the UE. |
| Claim: |
7. The method of claim 6 wherein awaiting an acknowledgement of the L1 signal from the UE comprises monitoring a Random Access Channel (RACH) for the acknowledgement. |
| Claim: |
8. The method of claim 7 wherein the RACH signal, if received from the UE, includes a UE identification and an acknowledgement unique to the L1 signal. |
| Claim: |
9. The method of claim 6 wherein transmitting an L1 signal, and the presence or absence of a UE acknowledgement, comprises a ping operation that ascertains the presence of the UE in a coverage area defined by the HS-SCCH transmission power level. |
| Claim: |
10. The method of claim 9 wherein, if the transmitted L1 signal used for a ping may alter a mode or state of the UE, the signal commanding the UE to its current mode or state is transmitted. |
| Claim: |
11. The method of claim 9 further comprising, if no UE acknowledgement is received, retransmitting the L1 signal at a higher HS-SCCH transmission power level. |
| Claim: |
12. A method of controlling Discontinuous Reception (DRX) in UE in a UTRAN wireless communication network, comprising: transmitting a level-1 signal to a UE in a CELL_FACH state, that is not in Continuous Packet Connectivity (CPC) mode, to activate or deactivate a DRX mode in the UE. |
| Claim: |
13. The method of claim 12 wherein transmitting an L1 signal to the UE comprises: encoding an L1 signaling flag in Part 1 of a High Speed Shared Control Channel (HSSCCH); encoding the DRX signal in Part 2 of the HS-SCCH; and transmitting the HS-SCCH to a UE. |
| Claim: |
14. The method of claim 13 wherein encoding the L1 signaling flag in Part 1 of a HS-SCCH comprises mapping the L1 signaling flag to an unspecified encoding of the HS-SCCH Part 1. |
| Claim: |
15. The method of claim 12 wherein transmitting an L1 signal to the UE comprises encapsulating the L1 signal in an L3 message, and transmitting the L3 message to the UE. |
| Claim: |
16. The method of claim 12 further comprising receiving an acknowledgement of the L1 DRX signal from the UE. |
| Claim: |
17. The method of claim 16 further comprising concluding, on failure to receive an acknowledgement of the L1 DRX signal from the UE, that the UE is inoperative or outside the range defined by the power level of the L1 DRX signal transmission. |
| Claim: |
18. A UTRAN wireless communication network, comprising: a Node B operative to transmit an L1 signal to a User Equipment (UE) by encoding an L1 signaling flag into an unused bit encoding in Part 1 of a High Speed Shared Control Channel (HS-SCCH) transmission, encoding the L1 signal in Part 2 of the HS-SCCH, and transmitting the HS-SCCH to the UE. |
| Claim: |
19. The network of claim 18 wherein the Node B is operative to transmit the L1 signal to a User Equipment by encoding the L1 flag into an unused bit encoding in Part 1 of the HS-SCCH. |
| Claim: |
20. The network of claim 18 wherein the Node B is further operative to receive an L1 signal acknowledgement from the UE. |
| Claim: |
21. The network of claim 20 wherein the Node B receives the L1 signal acknowledgement from the UE on a Random Access Channel (RACH). |
| Claim: |
22. The network of claim 20 wherein the L1 signal is a Discontinuous Reception (DRX) mode command independent of a Continuous Packet Connectivity (CPC) mode. |
| Claim: |
23. The network of claim 22 wherein the Node B is further operative to ping a UE by transmitting an L1 DRX command to enter the current DRX mode of the UE and receiving a UE acknowledgement. |
| Current U.S. Class: |
375/295 |
| Current International Class: |
04 |
| رقم الانضمام: |
edspap.20100316159 |
| قاعدة البيانات: |
USPTO Patent Applications |