# US 9,438,330 B2 · Methods and apparatus for reordering data in an evolved high speed packet access system

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- Number: US 9,438,330 B2
- Document ID: US9438330B2
- Status: Granted
- Kind: B2
- Application number: 14/186,447
- Filed: 2014-02-21
- Published: 2014-09-25
- Granted: 2016-09-06
- Earliest claimed: 2007-03-15
- Assignees: InterDigital Technology Corporation
- Applicants: InterDigital Technology Corporation
- Inventors: Paul Marinier; Diana Pani; Christopher R. Cave; Rocco DiGirolamo; Stephen E. Terry
- Web page: https://patentgrep.com/patent/US9438330B2

## CPC

- H04B 7/155: Ground-based stations (H04B7/204 takes precedence)
- H04L 1/1841: {Resequencing}
- H04L 1/1861: {Physical mapping arrangements (for ACK signaling see also H04L5/0053)}
- H04L 47/6275: based on priority
- H04W 16/26: Cell enhancers {or enhancement}, e.g. for tunnels, building shadow
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Method and apparatus for receiving high speed downlink shared channel (HS-DSCH) transmissions are disclosed. An HS-DSCH medium access control (MAC-ehs) entity receives MAC-ehs protocol data units (PDUs) via a high speed downlink shared channel (HS-DSCH) while in one of Cell_FACH, Cell_PCH, and URA_PCH states. The reordering PDUs included in the MAC-ehs PDUs may be sent to a next processing entity without performing reordering of the PDUs. A certain reordering queue may enter a suspend state upon occurrence of a triggering event and MAC-ehs PDUs distributed to the reordering queue in the suspend state may be forwarded to the next processing entity without performing reordering. MAC-ehs reset procedure may be extended for a certain transmission such that the MAC-ehs reset is performed after receiving a MAC-ehs PDU in a target cell.

## Claims

### Claim 1

A method for a wireless transmit/receive unit (WTRU) to process data, the method comprising:
receiving data via a high speed downlink shared channel (HS-DSCH), wherein the data comprises an HS-DSCH medium access control (MAC-ehs) protocol data unit (PDU), and wherein the MAC-ehs PDU comprises a reordering PDU; and
sending the data to a next processing entity without performing reordering of reordering PDUs if a condition has been met, wherein the sending bypasses a reordering entity, and wherein the next processing entity is a demultiplexing entity.

### Claim 2 (depends on 1)

The method of claim 1, wherein the WTRU is in one of a Cell_FACH state, a Cell_PCH state, or a URA_PCH state.

### Claim 3 (depends on 1)

The method of claim 1, wherein each MAC-ehs PDU is received more than once and each MAC-ehs PDU retransmission is completed before starting reception of a subsequent MAC-ehs PDU.

### Claim 4 (depends on 1)

The method of claim 1, wherein the condition has been met if the data is from a certain priority queue.

### Claim 5 (depends on 1)

The method of claim 1, wherein the condition has been met if the received MAC-ehs PDU is associated with a common HS-DSCH radio network temporary identity (H-RNTI).

### Claim 6 (depends on 1)

The method of claim 1, wherein the condition has been met if the data is from a certain logical channel.

### Claim 7 (depends on 6)

The method of claim 6, wherein the certain logical channel is one of a broadcast control channel (BCCH) or a paging control channel (PCCH).

### Claim 8 (depends on 1)

The method of claim 1, wherein the received MAC-ehs PDU is received while the WTRU is in one of a Cell_FACH state, Cell_PCH state, or URA_PCH state, and further comprising setting an initial value of a next_expected_TSN to a lower edge of a receive window (RcvWindow_UpperEdge−RECEIVE_WINDOW_SIZE+1).

### Claim 9

A wireless transmit/receive unit (WTRU) comprising:
a transceiver; and
a processor configured to:
receive data via a high speed downlink shared channel (HS-DSCH), wherein the data comprises an HS-DSCH medium access control (MAC-ehs) protocol data unit (PDU), and wherein the MAC-ehs PDU comprises a reordering PDU; and
send the data to a next processing entity without performing reordering of reordering PDUs if a condition has been met, wherein the sending bypasses a reordering entity, and wherein the next processing entity is a demultiplexing entity.

### Claim 10 (depends on 9)

The WTRU of claim 9, wherein the WTRU is in one of a Cell_FACH state, a Cell_PCH state, or a URA_PCH state.

### Claim 11 (depends on 9)

The WTRU of claim 9, wherein each MAC-ehs PDU is transmitted more than once and each MAC-ehs PDU retransmission is completed before starting transmission of a subsequent MAC-ehs PDU.

### Claim 12 (depends on 9)

The WTRU of claim 9, wherein the condition has been met if the data is from a certain priority queue.

### Claim 13 (depends on 9)

The WTRU of claim 9, wherein the condition has been met if the received MAC-ehs PDU is associated with a common HS-DSCH radio network temporary identity (H-RNTI).

### Claim 14 (depends on 9)

The WTRU of claim 9, wherein the condition has been met if the data is from a certain logical channel.

### Claim 15 (depends on 14)

The WTRU of claim 14, wherein the certain logical channel is one of a broadcast control channel (BCCH) or a paging control channel (PCCH).

### Claim 16 (depends on 9)

The WTRU of claim 9, wherein the received MAC-ehs PDU is received while the (WTRU) is in one of a Cell_FACH state, Cell_PCH state, or URA_PCH state, and further comprising setting an initial value of a next_expected_TSN to a lower edge of a receive window (RcvWindow_UpperEdge−RECEIVE_WINDOW_SIZE+1).