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US 2019/0357227 A1Published application
On-demand system information broadcasting system
AssigneeNEC Corporation
InventorsChadi KHIRALLAH, Yassin Aden AWAD, Yuhua CHEN, Robert ARNOTT
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Abstract
A communication system is disclosed in which a base station manages the transmission of on-demand system information to optimise the trade-off between the additional signalling overhead associated with on-demand transmission and the resource usage inefficiencies associated with the sometimes unnecessary transmission of system information on a periodic basis. The base station manages switching from on-demand transmission to periodic transmission, and vice versa, based on one or more utilisation thresholds.
Claims26
Communication apparatus for a telecommunication system, the communication apparatus comprising:
- a controller and a transceiver;
- wherein the controller is configured to:
- control transmission of system information, by the transceiver, in at least one cell operated by the communication apparatus, using:
- a periodic transmission mode in which at least part of said system information is transmitted at a regular periodic interval;
- and
- an on-demand transmission mode in which at least part of said system information is transmitted, following a request for system information from at least one communication device in said cell;
- determine a utilisation level representing an extent to which said on-demand transmission mode is being, or will be, utilised by the at least one communication device;
- and
- switch, based on said determined utilisation level, between using said on-demand transmission mode, and not using said on-demand transmission mode, for transmitting at least a given part of said system information.
6 more elements
A communication device for a telecommunication system, the communication device comprising:
- a controller and a transceiver;
- wherein the controller is configured to:
- control reception, by the transceiver, of system information transmitted in a cell by communication apparatus, wherein said system information is transmitted using at least one of:
- a periodic transmission mode in which at least part of said system information is transmitted at a regular periodic interval;
- and
- an on-demand transmission mode in which at least part of said system information is transmitted, following a request for system information from at least one communication device in said cell;
- identifying what system information is required for which use of said on-demand transmission mode is switched on;
- and
- control transmission, by the transceiver, of a request for the identified system information;
- wherein the controller is configured to control the timing said request based on what system information has been identified as being required.
7 more elements
Communication apparatus for a telecommunication system, the communication apparatus comprising:
- a controller and a transceiver;
- wherein the controller is configured to:
- control transmission of system information, by the transceiver, in at least one cell operated by the communication apparatus, using:
- a periodic transmission mode in which at least part of said system information is transmitted at a regular periodic interval;
- and
- an on-demand transmission mode in which at least part of said system information is transmitted, following a request for system information from at least one communication device in said cell;
- wherein, when using the on-demand transmission mode, the controller is configured to control a timing of transmissions of requested system information to coincide with transmission opportunities configured to occur at regular periodic intervals;
- wherein the requested system information is transmitted in at least one of said transmission opportunities following at least one request for that system information;
- and
- wherein, the controller is configured to configure at least one periodicity, for the regular periodic intervals between said transmission opportunities, to target a required utilisation level.
7 more elements
A method performed by a communication apparatus in a telecommunication system, the method comprising:
- controlling transmission of system information in at least one cell operated by the communication apparatus, using:
- a periodic transmission mode in which at least part of said system information is transmitted at a regular periodic interval;
- and
- an on-demand transmission mode in which at least part of said system information is transmitted, following a request for system information from at least one communication device in said cell;
- determining a utilisation level representing an extent to which said on-demand transmission mode is being, or will be, utilised by the at least one communication device;
- and
- switching, based on said determined utilisation level, between using said on-demand transmission mode, and not using said on-demand transmission mode, for transmitting at least a given part of said system information.
4 more elements
A method performed by a communication device in a telecommunication system, the method comprising:
- receiving system information transmitted in a cell, by a communication apparatus, wherein said system information is transmitted using at least one of:
- a periodic transmission mode in which at least part of said system information is transmitted at a regular periodic interval;
- and
- an on-demand transmission mode in which at least part of said system information is transmitted, following a request for system information from at least one communication device in said cell;
- identifying what system information is required for which use of said on-demand transmission mode is switched on;
- and
- transmitting a request for the identified system information, wherein said request is timed based on what system information has been identified as being required.
4 more elements
A method performed by a communication apparatus in a telecommunication system, the method comprising:
- controlling transmission of system information, in at least one cell operated by the communication apparatus, using:
- a periodic transmission mode in which at least part of said system information is transmitted at a regular periodic interval;
- and
- an on-demand transmission mode in which at least part of said system information is transmitted, following a request for system information from at least one communication device in said cell;
- when using the on-demand transmission mode, timing transmissions of requested system information to coincide with transmission opportunities configured to occur at regular periodic intervals;
- transmitting the requested system information, in at least one of said transmission opportunities, following receipt of at least one request for that system information;
- and
- configuring at least one periodicity, for the regular periodic intervals between said transmission opportunities, to target a required utilisation level.
5 more elements
Dependencies are inferred from the claim text.