Downlink multiplexing

• US 8,594,040 B2
• Filed: 08/12/2008
• Issued: 11/26/2013
• Est. Priority Date: 08/14/2007
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Ahluwalia, Jagdeep Singh, Awad, Yassin Aden
• Primary Examiner(s): Nguyen, Steven H
• Assistant Examiner(s): Baron, Henry
• Application Number:
  US12/733,129
• Publication Number:
  US 20100150101A1
• Time in Patent Office: 1,932 Days
• Field of Search: 370/330, 370/329, 370/336, 455/452.1
• US Class Current: 370/330
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 72/1273 of downlink data flows
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A communications system is provided in which persistently allocated resources used by a node to communicate data with another node of the communications system can be reallocated or new dynamic resources can be allocated to allow the node to communicate using both the persistently allocated resources and the dynamically allocated resources. The system does this without changing the structure of a control channel used to communicate resource allocations.

Claims

1. A method performed by a node of a communications system, the method comprising:

storing allocation data defining persistently allocated resources for use in communicating data between the node and another node of the communications system within predetermined transmission time intervals;

receiving control data relating to a dynamic allocation of resources to be used in a current transmission time interval, the received control data comprising modulation data;

determining if the received control data includes modulation data comprising a predefined bit pattern relating to persistently allocated resources;

if the determining determines that the received control data does include said modulation data comprising the predefined bit pattern, then changing the stored allocation data defining the persistently allocated resources; and

if the determining determines that the received control data does not include said modulation data comprising the predefined bit pattern, then communicating with the another node using the dynamic allocation of resources defined by the received control data.

2. A method according to claim 1, wherein said control data includes HARQ (Hybrid Automatic Repeat Request) data, and

wherein said predefined bit pattern is included in said HARQ data.

3. A method according to claim 1, wherein said control data includes ID data identifying the node, allocation data defining the allocated resources, and transport format data, and

wherein said predefined bit pattern is defined by said transport format data.

11. A non-transitory computer implementable instructions product comprising computer implementable instructions for causing a programmable computer device to carry out the method of claim 1.

13. A method according to claim 1, wherein said modulation data comprising the predefined bit pattern comprises a feature of a transport format.

14. A method according to claim 13, wherein the transport format is set differently for reallocation of predefined downlink resources than for new dynamic allocated resources.

15. A method according to claim 14, wherein the predefined downlink resources comprises persistently scheduled downlink resources.

16. A method according to claim 1, wherein said predefined bit pattern is defined by transport format data of said control data.

4. A method performed by a node of a communications system, the method comprising:

storing allocation data defining persistently allocated resources for use in communicating data between the node and another node of the communications system within predetermined transmission time intervals;

generating control data relating to a dynamic allocation of resources to be used in a current transmission time interval, the control data comprising modulation data;

determining whether to include modulation data comprising a predefined bit pattern relating to persistently allocated resources within the control data, depending on whether the stored allocation data defining the persistently allocated resources are to be changed;

transmitting the generated control data to the another node for controlling the resources used during the current transmission time interval; and

depending on whether said control data includes said modulation data comprising said predefined bit pattern;

communicating with said another node using the changed stored allocation data defining the persistently allocated resources;

or

communicating, within the current transmission time interval, with said another node using the dynamic allocation of resources defined by the transmitted control data.

5. A method according to claim 4, wherein said control data includes HARQ (Hybrid Automatic Repeat Request) data, and

wherein said predefined bit pattern is included in said HARQ data.

6. A method according to claim 4, wherein said control data includes ID data identifying the node, allocation data defining the allocated resources, and transport format data, and

wherein said predefined bit pattern is defined by said transport format data.

12. A non-transitory computer implementable instructions product comprising computer implementable instructions for causing a programmable computer device to carry out the method of claim 4.

7. A communications node, comprising:

a memory for storing allocation data defining persistently allocated resources for use in communicating data between the communications node and another node of a communications system within predetermined transmission time intervals;

a receiver operable to receive control data relating to a dynamic allocation of resources to be used in a current transmission time interval, the control data comprising modulation data;

a controller operable to;

determine if the received control data includes modulation data comprising a predefined bit pattern relating to persistently allocated resources;

change stored allocation data defining the persistently allocated resources if the received control data does include said modulation data comprising the predefined bit pattern; and

communicate with the another node using the dynamic allocation of resources defined by the received control data if the received control data does not include said modulation data comprising the predefined bit pattern.

8. A communications node according to claim 7, wherein said control data includes HARQ (Hybrid Automatic Repeat Request) data, wherein said predefined bit pattern is included in said HARQ data and wherein said controller is operable to determine if received HARQ data includes said predefined bit pattern.

9. A communications node, comprising:

a memory for storing allocation data defining persistently allocated resources for use in communicating data between the communications node and another node of a communications system within predetermined transmission time intervals;

a controller operable to;

generate control data relating to a dynamic allocation of resources to be used in a current transmission time interval, the control data comprising modulation data; and

determine whether to include a predefined bit pattern relating to persistently allocated resources within the control data, depending on whether settings of the stored allocation data defining the persistently allocated resources are to be changed; and

a transmitter operable to transmit the generated control data to the another node for controlling the resources used during the current transmission time interval,

wherein the controller is operable so that depending on whether said control data includes modulation data comprising said predefined bit pattern;

to cause the communications node to communicate with said another node using the changed stored allocation data defining the persistently allocated resources;

or

to cause the communications node to communicate with said another node, within the current transmission time interval, using the dynamic allocation of resources defined by the transmitted control data.

10. A communications node according to claim 9, wherein said control data includes HARQ (Hybrid Automatic Repeat Request) data, and

wherein said controller is operable to include said predefined bit pattern in said HARQ data.