NETWORK NODE, USER DEVICE AND METHODS THEREOF

• US 20180070225A1
• Filed: 11/13/2017
• Published: 03/08/2018
• Est. Priority Date: 05/13/2015
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: SOLDATI, Pablo, PEROTTI, Alberto Giuseppe, DU, Yinggang
• Granted Patent: US 10,070,306 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 8/22 Processing or transfer of terminal data, e.g. status or physical capabilities
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support

Abstract

The present invention relates to a network node and a user device. The network node (100) comprising: a processor (102) configured to: generate a check element for each user device (300z) in a group of user devices (300a, . . . , 300z); a transmitter (104) configured to: transmit the control information message (M) to the group of user devices (300a, . . . , 300z). The user device (300) comprising: a receiver (304) configured to: receive a control information message (M) addressed for a group of user devices (300a, . . . , 300z); a processor (302) configured to: perform a redundancy check on the control information message (M); derive the control information (d) from the control information message (M) and discard check elements of other user devices upon a positive redundancy check; communicate in the wireless communication system (500) based on the derived control information (d). Furthermore, the present invention also relates to corresponding methods, a computer program, and a computer program product.

Claims

1. Network node for a wireless communication system, the network node comprising:

a processor configured to;

generate a check element for each user device in a group of user devices, wherein the check element for the first user device in the group of user devices is based on control information (d) and the identity (i₁) of the first user device, and wherein the check element for each subsequent user device in the group of user devices is based on the control information (d), the identity (i_z) of the subsequent user device and previously generated check elements for previous user devices in the group of user devices,

form a control information message (M) by appending the check elements for each user device to the control information (d);

a transmitter configured to;

transmit the control information message (M) to the group of user devices.

2. Network node according to claim 1, wherein the processor further is configured to

form the control information message (M) by appending the check elements for the group of user devices according to the order the check elements for the group of user devices are generated.

3. Network node according to claim 1, wherein the control information (d) comprises any of common control information (d_c) for the group of user devices and user device specific control information (d_z, d_k) for at least one user device in the group of user devices.

4. Network node according to claim 3, wherein the processor further is configured to

generate the check element for a subsequent user device based on the identity (i_z) of the subsequent user device and all control information and check elements in the control information message (M) prior to the check element for the subsequent user device.

5. Network node according to claim 3, wherein the control information (d) comprises user device specific control information for all user devices in the group user devices, and wherein the processor further is configured to

form the control information message (M) by sequentially appending the user device specific control information (d_z) for each user device to the common control information (d_c) before sequentially appending the check elements for each user device.

6. Network node according to claim 5, wherein the processor further is configured to

generate a check element for each user device, wherein the check element for the first user device is based on the common control information (d_c), the user device specific control information (d₁) for the first user device (i₁), and the identity of the first user device (i₁), and wherein the check element for each subsequent user device is based on the common control information (d_c), the user device specific control information (d_z) for the subsequent user device (i_z) and for the previous user devices, the identity of the subsequent user device (i_z), and previously generated check elements for the previous user devices.

7. Network node according to claim 6, wherein the processor further is configured to

form the control information message (M) by sequentially appending the check element for each user device interleaved with the associated user device specific control information (d_z).

8. Network node according to claim 1, wherein the user device specific control information comprises user device specific control information (d_z) for a subgroup of user devices in the group of user devices, and wherein the processor further is configured to

generate a check element for each user device, wherein the check element for the first user device is based on the common control information (d_c), the user device specific control information (d₁) for the first user device if the first user device belongs to the subgroup of user devices, and the identity of the first user device (i₁), and wherein the check element for each subsequent user device is based on the common control information (d_c), the user device specific control information (d_z) for the subsequent user device (i_z) if the subsequent user device (i_z) belongs to the subgroup of user devices and user device specific control information (d_z) for the previous user devices, the identity of the subsequent user device (i_z), and previously generated check elements for the previous user devices.

9. Network node according to claim 8, wherein the processor further is configured to

form the control information message (M) by sequentially appending the check elements for each user device together with the associated user device specific control information (d_z) if the user device belongs to the subgroup of user devices.

10. Network node according to claim 1, wherein the processor further is configured to

form the group of user devices based on the radio channel or radio environment properties including one or more of:

the signal-to-noise ratio, signal-to-noise and interference ratio, propagation loss, signal-to-leakage and noise ratio, and received signal strength.

11. User device for a wireless communication system, the user device comprising:

a receiver configured to;

receive a control information message (M) addressed for a group of user devices, wherein the control information message (M) comprises control information (d) and a check element for each user device in the group of user devices, and wherein the check element for each user device in the group of user devices are appended to the control information (d); and

a processor configured to;

perform a redundancy check on the control information message (M) based on the identity (i_z) of the user device, and all control information and check elements in the control information message (M) prior to the check element for the user device;

derive the control information (d) from the control information message (M) and discard check elements of other user devices upon a positive redundancy check; and

wherein the user device is configured to communicate in the wireless communication system based on the derived control information (d).

12. User device according to claim 11, wherein the processor further is configured to

derive any of common control information (d_c) for the group of user devices comprised in the control information (d) and user device specific control information (d_z) for the user device comprised in the control information (d).

13. User device according to claim 12, wherein the processor further is configured to

derive the user device specific control information (d_z) for the user device (300) based on the common control information (d_r) and user device specific control information (d_z) for at least one other user device in the group of user devices comprised in the control information (d).

14. Method for a network node in a wireless communication system, the method comprising

generating a check element for each user device in a group of user devices, wherein the check element for the first user device in the group of user devices is based on control information (d) and the identity of the first user device (i₁), and wherein the check element for each subsequent user device in the group of user devices is based on the control information (d), the identity of the subsequent user device (i_z) and previously generated check elements for previous user devices in the group of user devices;

forming a control information message (M) by appending the check elements for each user device to the control information (d);

transmitting the control information message (M) to the group of user devices.

16. Computer program with a program code for performing a method according to claim 14 when the computer program runs on a computer.

15. Method for a user device in a wireless communication system, the method comprising:

receiving a control information message (M) addressed for a group of user devices, wherein the control information message (M) comprises control information (d) and a check element for each user device in the group of user devices, and wherein the check element for each user device in the group of user devices are appended to the control information (d);

performing a redundancy check on the control information message (M) based on the identity (i_z) of the user device, and all control information and check elements in the control information message (M) prior to the check element for the user device;

deriving the control information (d) from the control information message (M) and discarding check elements of other user devices upon a positive redundancy check;

communicating in the wireless communication system based on the derived control information (d).

17. Computer program with a program code for performing a method according to claim 15 when the computer program runs on a computer.