# US 2014/0153483 A1 · L1 control signaling for utran hsdpa

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- Number: US 2014/0153483 A1
- Document ID: US20140153483A1
- Status: Published application
- Kind: A1
- Application number: 13/920,443
- Filed: 2013-06-18
- Published: 2014-06-05
- Earliest claimed: 2007-02-05
- Assignees: Telefonaktiebolaget L M Ericsson (publ)
- Applicants: Telefonaktiebolaget L M Ericsson (Publ)
- Inventors: Bo Göransson; Johan Bergman; Dirk Gerstenberger; Janne Peisa
- Web page: https://patentgrep.com/patent/US20140153483A1

## CPC

- H04W 72/20: Control channels or signalling for resource management
- H04L 1/0035: {evaluation of received explicit signalling}
- H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)}
- H04L 69/323: in the physical layer [OSI layer 1]
- H04L 69/324: in the data link layer [OSI layer 2], e.g. HDLC
- H04W 24/02: Arrangements for optimising operational condition
- H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX]
- H04L 1/0079: {Formats for control data (H04L1/16 takes precedence; training sequences H04L25/00 and H04L27/00)}
- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04W 28/04: Error control
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04W 88/02: Terminal devices
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

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 (18) to detect early that the HS-SCCH is pure L1 signaling, and the UE (18) may avoid, wasting power by not processing an accompanying HS-PDSCH. Alternatively, in CPC HS-SCCH-less mode, the UE (18) 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 (18) acknowledgement improves the L1 signaling accuracy. In one embodiment, a L1 signal and UE (18) acknowledgement protocol are utilized to “ping” a UE (18).

## Claims

### Claim 1

A wireless communication network, comprising:
a node configured to transmit an L1 signal to a mobile station 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 mobile station.