CONFIGURABLE WIRELESS DEVICE NETWORK

• US 20200137832A1
• Filed: 03/13/2018
• Published: 04/30/2020
• Est. Priority Date: 03/30/2017
• Status: Active Grant

• Current Assignee: Telecom Italia S.p.A.
• Original Assignee: Telecom Italia S.p.A.
• Inventors: COLLOTTA, Ivano Salvatore, DELL'AERA, Gian Michele, MELIS, Bruno, SORBARA, Davide
• Granted Patent: US 11,212,872 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 36/033 in pre-organised networks
• CPC Class Codes: H04W 4/38 for collecting sensor information
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 40/246 Connectivity information discovery
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for a wireless network, including a node and a first device covered by the node, the node acting as serving node for the first device, and the first device transmitting first data to the node over a first link, includes determining presence of a second device covered by the node, the second device transmitting second data to a serving node over a second link, determining radio quality of the first link, determining radio quality of the second link, and determining radio quality of a third link between the second device and the first device. If the radio quality of the third link is higher than the radio quality of the second link, the second device transmits the second data to the first device over the third link and the first device retransmits, over the first link, the second data to the node.

Claims

1. A method for configuring a wireless network, wherein the wireless network comprises a network node and a first network device under coverage of the network node, the network node acting as serving network node for the first network device, and the first network device being arranged for transmitting first data to the network node over a first radio link, wherein the method comprises:

determining the presence of a second network device under coverage of said network node, the second network device being arranged for transmitting second data to a respective serving network node over a second radio link,

determining a radio quality of the first radio link,

determining a radio quality of the second radio link,

determining a radio quality of a third radio link between the second network device and the first network device, and

if the radio quality of the third radio link is higher than the radio quality of the second radio link, configuring the second network device to transmit the second data to the first network device over the third radio link and the first network device to retransmit, over the first radio link, said second data to the network node.

2. The method according to claim 1, wherein the wireless network supports first synchronization signals and a first physical random access channel for establishing a direct connection between the first network device and the network node and between the second network device and the respective serving network node, and second synchronization signals and a second physical random access channel for establishing a direct connection between the first network device and the second network device, and wherein said configuring the second network device to transmit the second data to the first network device over the third radio link and the first network device to retransmit, over the first radio link, said second data to the network node is carried out if the first network device supports at least transmission of the second synchronization signals and reception on the second physical random access channel, and the second network device supports at least transmission on the first physical random access channel and on the second physical random access channel and reception of the second synchronization signals.

3. The method according to claim 2, wherein said determining a radio quality of a third radio link comprises:

causing the second network device to transmit, to the network node (105_k) and on the first physical random access channel, requests of radio resources and the radio quality of the second radio link,

causing the first network device to intercept said requests of radio resources and said radio quality of the second radio link, and

causing the first network device to determine the radio quality of the third radio link based on the quality of said intercepted requests of radio resources and said intercepted radio quality of the second radio link.

4. The method according to claim 2, wherein said determining a radio quality of a third radio link comprises:

causing the second network device to transmit, to the network node and on the first physical random access channel, a first set of requests of radio resources and the radio quality of the second radio link, and

in presence of a feedback of the network node at the second network device about said transmitted first set of requests of radio resources;

causing the second network device to transmit subsequent requests of radio resources following the first set of requests of radio resources to the first network device on the second physical random access channel channel, and

causing the first network device to determine the radio quality of the third radio link based on a quality of the received subsequent requests of radio resources.

5. The method according to claim 2, wherein said determining a radio quality of a third radio link comprises:

causing the second network device to transmit, to the network node and on the first physical random access channel, a first set of requests of radio resources and the radio quality of the second radio link, and,

in absence of a feedback of the network node at the second network device about said first set of requests of radio resources;

causing the second network device to transmit subsequent requests of radio resources following the first set of requests of radio resources to the network node on the first physical random access channel,

causing the first network device to intercept said subsequent requests of radio resources, and

determining the radio quality of the third radio link based on the quality of the intercepted subsequent requests of radio resources.

6. The method according to claim 3, wherein determining the radio quality of the third radio link is also based on evaluation of the second synchronization signals transmitted from the first network device to the second network device.

7. The method according to claim 2, wherein the network node acts as serving network node also for the second network device, and wherein said configuring the second network device to transmit the second data to the first network device over the third radio link and the first network device to retransmit, over the first radio link, said second data to the network node further comprises:

causing the network node to send a first resource assignment message to the first network device and a second resource assignment message to the second network device;

causing the first network device to transmit periodically the second synchronization signals, and

causing the second network device to synchronize with the first network device according to the received second synchronization signals.

8. The method according to claim 7, wherein the second resource assignment message also contains the information on reserved radio resources that are reserved for Downlink and Uplink data transmission on the third radio link.

9. The method according to claim 2, wherein the wireless network comprises a further network node, the further network node acting as serving network node for the second network device, and wherein the method further comprises causing the network node to inform the further network node about the availability of the first network device to which the second network device can transmit the second data over the third radio link.

10. The method to claim 9, wherein said configuring the second network device to transmit the second data to the first network device over the third radio link and the first network device to retransmit, over the first radio link, said second data to the network node further comprises:

causing the network node to send a resource assignment message to the first network device,

causing the further network node to send a resource redirection message to the second network device;

causing the first network device to transmit periodically the second synchronization signals, and

causing the second network device to synchronize with the first network device according to the received second synchronization signals.

11. The method according to claim 3, wherein the radio quality of the first radio link is based on the first synchronization signals from the network node to the first network device, and wherein the radio quality of the second radio link is based on the first synchronization signals from the respective serving network node to the second network device.

12. The method according to claim 1, further comprising determining an energy availability of the first network device and an energy availability of the second network device, wherein said configuring the second network device to transmit the second data to the first network device over the third radio link and the first network device to retransmit, over the first radio link, said second data to the network node is carried out if the energy availability of the first network device is higher than the energy availability of the second network device.

13. The method according to claim 1, wherein said configuring the second network device to transmit the second data to the first network device over the third radio link and the first network device to retransmit, over the first radio link, said second data to the network node is carried out also based on at least one among:

an indication of a device network to which the first and second network devices belong;

an indication of a maximum transmitting power supported by the first and second network devices;

an indication about predefined transmission time periods of the first and second network devices; and

an indication of position and mobility of the first and second network devices.

14. A network node for use in a wireless network, wherein the wireless network comprises a network node and a first network device under coverage of the network node, the network node acting as serving network node for the first network device, and the first network device being arranged for transmitting first data to the network node over a first radio link, wherein the network node is arranged for:

determining the presence of a second network device under coverage of said network node, the second network device being arranged for transmitting second data to a respective serving network node over a second radio link,

determining a radio quality of the first radio link,

determining a radio quality of the second radio link,

determining a radio quality of a third radio link between the second network device and the first network device, and

if the radio quality of the third radio link is higher than the radio quality of the second radio link, configuring the second network device to transmit the second data to the first network device over the third radio link and the first network device to retransmit, over the first radio link, said second data to the network node.

15. A device network for use in a wireless network, wherein the device network comprises a first network device arranged for transmitting first data over a first radio link, and a second network device arranged for transmitting second data over a second radio link, wherein with the first and second network devices under coverage of a network node of the cellular network, and with the network node acting as serving network node for the first network device:

if the radio quality of the third radio link is higher than the radio quality of the second radio link, the second network device is arranged for transmitting the second data to the first network device over the third radio link and the first network device is arranged for retransmitting, over the first radio link, said second data to the network node.