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EP-4241500-B1 - COMMUNICATIONS DEVICE AND NETWORK INFRASTRUCTURE EQUIPMENT AND METHODS APPLYING MOBILITY INFORMATION OF INFRASTRUCTURE EQUIPMENT

EP4241500B1EP 4241500 B1EP4241500 B1EP 4241500B1EP-4241500-B1

Inventors

  • WEI, YUXIN
  • ATUNGSIRI, SAMUEL ASANGBENG
  • SHARMA, VIVEK

Dates

Publication Date
20260506
Application Date
20211027

Claims (12)

  1. A method of operating by a communications device (300) for transmitting or receiving via a wireless communications network, the method comprising receiving, from an infrastructure equipment (302, 304) of a radio network part of the wireless communications network, mobility information indicating one or both of whether the infrastructure equipment is non-stationary and a location of the infrastructure equipment, and adapting an operation of the communications device in accordance with the mobility information, the adapted operation configuring the communications devices for transmitting signals to the infrastructure equipment or receiving signals from the infrastructure equipment according to the mobility information, wherein the adapting the operation of the communications device in accordance with the mobility information comprises performing an idle mode selection/re-selection of one of a plurality of infrastructure equipment forming a radio network part of the wireless communications network for receiving information from the wireless communications network, determining from the mobility information whether the communications device is to select or re-select the infrastructure equipment according to predetermined criteria, and adapting the idle mode selection/re-selection depending on whether the predetermined criteria determined that the infrastructure equipment is not to be selected or re-selected, characterised in that the determining from the mobility information whether the communications device is to select or re-select the infrastructure equipment according to predetermined criteria comprises determining that the infrastructure equipment is not transmitting a System Information Block 1, SIB1, which includes radio resource configuration information or a schedule of other SIBs which would have been broadcast by the infrastructure equipment.
  2. A method of claim 1, wherein the receiving the mobility information comprises transmitting, by the communications device in a connected mode, a request for the mobility information, to the infrastructure equipment, and in response, receiving the mobility information.
  3. A method of claim 2, wherein the transmitting the request comprises transmitting the request for the mobility information periodically, and the receiving the mobility information comprise receiving the mobility information periodically, the mobility information being updated in accordance with a time that the infrastructure equipment periodically transmits the mobility information.
  4. A method of claim 1, wherein the receiving the mobility information comprises receiving the mobility information broadcast by the infrastructure equipment.
  5. A method of claim 4, wherein the mobility information is broadcast in a system information block.
  6. A method of claim 1, wherein the mobility information includes one or more of a mobility status of the infrastructure equipment, a location of the infrastructure equipment, a velocity of the infrastructure equipment, a moving direction of the infrastructure equipment, a recommended uplink beam index, a recommended transmission configuration indicator, TCI, state and a location of neighbouring infrastructure equipment.
  7. A communications device (300) comprising transmitter circuitry (356) configured to transmit signals via a wireless access interface of a wireless communications network, receiver circuitry (353) configured to receive signals transmitted via the wireless communications network, and controller circuitry (350) configured to control the transmitter circuitry and the receiver circuitry, the controller circuitry being configured with the receiver circuitry to receive, from an infrastructure equipment (302, 304) of a radio network part of the wireless communications network, mobility information indicating one or both of whether the infrastructure equipment is non-stationary and a location of the infrastructure equipment, and the controller circuitry is configured to adapt the control of one or both of the transmitter circuitry and the receiver circuitry according to the mobility information received from the infrastructure equipment, wherein the controller circuitry is configured to adapt the control of the receiver circuitry according to the mobility information by performing an idle mode selection/re-selection of one of a plurality of infrastructure equipment forming a radio network part of the wireless communications network for receiving information from the wireless communications network, determining from the mobility information whether the communications device is to select or re-select the infrastructure equipment according to predetermined criteria, and adapting the idle mode selection/re-selection depending on whether the predetermined criteria determined that the infrastructure equipment is not to be selected or re-selected, characterised in that the determining from the mobility information whether the communications device is to select or re-select the infrastructure equipment according to predetermined criteria comprises determining that the infrastructure equipment is not transmitting a System Information Block 1, SIB1, which includes radio resource configuration information or a schedule of other SIBs which would have been broadcast by the infrastructure equipment.
  8. A communications device of claim 7, wherein the receiving the mobility information comprises transmitting, by the communications device in a connected mode, a request for the mobility information, to the infrastructure equipment, and in response, receiving the mobility information.
  9. A communications device of claim 8, wherein the transmitting the request comprises transmitting the request for the mobility information periodically, and the receiving the mobility information comprise receiving the mobility information periodically, the mobility information being updated in accordance with a time that the infrastructure equipment periodically transmits the mobility information.
  10. A communications device of claim 7, wherein the receiving the mobility information comprises receiving the mobility information broadcast by the infrastructure equipment.
  11. A communications device of claim 10, wherein the mobility information is broadcast in a system information block.
  12. A communications device of claim 7, wherein the mobility information includes one or more of a mobility status of the infrastructure equipment, a location of the infrastructure equipment, a velocity of the infrastructure equipment, a moving direction of the infrastructure equipment, a recommended uplink beam index, a recommended transmission configuration indicator, TCI, state and a location of neighbouring infrastructure equipment.

Description

BACKGROUND Field The present disclosure relates to communications devices, network infrastructure equipment, wireless communications networks and methods. Embodiments of the present disclosure can provide improvements in or relating operations performed by communications devices relating to transmitting or receiving signals and data via a wireless communications network in accordance with a mobility status of an infrastructure equipment of the wireless communications network. The present disclosure claims the Paris Convention priority to European Patent Application Number 20205789.9. Description of Related Art The "background" description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description which may not otherwise qualify as prior art at the time of filing, are neither expressly or impliedly admitted as prior art against the present disclosure. Latest generation mobile telecommunication systems are able to support a wider range of services than simple voice and messaging services offered by earlier generations of mobile telecommunication systems. For example, with the improved radio interface and enhanced data rates provided by LTE systems, a user is able to enjoy high data rate applications such as mobile video streaming and mobile video conferencing that would previously only have been available via a fixed line data connection. The demand to deploy such networks is therefore strong and the coverage area of these networks, i.e. geographic locations where access to the networks is possible, is expected to continue to increase rapidly. Future wireless communications networks will be expected efficiently to support communications with an ever-increasing range of devices and data traffic profiles than existing systems are optimised to support. For example it is expected future wireless communications networks will be expected to efficiently support communications with devices including reduced complexity devices, machine type communication devices, high resolution video displays, virtual reality headsets and so on. Some of these different types of devices may be deployed in very large numbers, for example low complexity devices for supporting the "The Internet of Things", and may typically be associated with the transmissions of relatively small amounts of data with relatively high latency tolerance. To facilitate communications, future mobile communications networks may also be configured with new features and aspects and in turn different types of devices must also be adapted to utilise these new features and aspects. EP 2882231 A1, published 10 June 2015, discusses cell selection in a cellular communication network. SUMMARY Embodiments of the present technique can provide a method of operating by a communications device for transmitting or receiving via a wireless communications network. The method comprises receiving, from an infrastructure equipment of a radio network part of the wireless communications network, mobility information indicating one or both of whether the infrastructure is non-stationary and a location of the infrastructure equipment, and adapting an operation of the communications device in accordance with the mobility information. The adapted operation includes configuring the communications devices for transmitting signals to the infrastructure equipment or receiving signals from the infrastructure equipment according to the mobility information. Example embodiments envisage that an infrastructure equipment forming part of a radio network of a wireless communications network may be mobile and therefore non-stationary. For example the infrastructure equipment may form part of a backhaul network or may be a drone or other mobile infrastructure equipment forming part of a radio network of a wireless communications network. By transmitting mobility information indicating a mobility status of the infrastructure equipment or its location, a communications device receiving that mobility information from the infrastructure equipment can adapt its operation to communicate more effectively and efficiently via the wireless access interface formed by the wireless communications network. For example, the communications device can adapt an idle mode cell selection/re-selection procedure, a handover procedure and/or a transmit or receive beam direction based on the mobility information. Respective aspects and features of the present disclosure are defined in the appended claims. It is to be understood that both the foregoing general description and the following detailed description are exemplary, but are not restrictive, of the present technology. The described embodiments, together with further advantages, will be best understood by reference to the following detailed description taken in conjunction with the accompanying drawings