Terminal device, infrastructure equipment and methods
A receiver circuitry configured to receive, from infrastructure equipment of the wireless telecommunications network, a signal comprising positioning information for allowing a spatial position of the terminal device to be determined using the positioning information and a predetermined positioning scheme associated with the positioning information, the positioning scheme comprising one or more of instructions and additional information for determining the position of the terminal device using the positioning information, wherein the positioning information is comprised within a system information block (SIB) of the received signal; and processing circuitry configured: to determine, based on a characteristic of the SIB, a temporal validity of the received positioning information, and to determine, at a time at which the received positioning information is temporally valid, the spatial position of the terminal device using the received positioning information and the predetermined positioning scheme.
1 . A method of operating a terminal device for use with a wireless telecommunications network, the terminal device comprising receiver circuitry, wherein the method comprises:
controlling the receiver circuitry to receive, from infrastructure equipment of the wireless telecommunications network, a signal comprising positioning information for allowing a spatial position of the terminal device to be determined using the positioning information and a predetermined positioning scheme associated with the positioning information, the positioning scheme comprising one or more of instructions and additional information for determining the position of the terminal device using the positioning information, wherein the positioning information is comprised within a system information block (SIB) of the received signal;
determining, based on a characteristic of the SIB, a temporal validity of the received positioning information; and
determining, at a time at which the received positioning information is temporally valid, the spatial position of the terminal device using the received positioning information and the predetermined positioning scheme, wherein the method further comprises:
determining, using a predetermined characteristic associated with the terminal device, whether it is acceptable for the spatial position of the terminal device to continue to be determined using the positioning information which is no longer temporally valid based on at least one of positioning accuracy, power consumption, a type of the receiving circuitry, and data stored in a storage device of the terminal device; and
when it is determined that it is acceptable for the spatial position of the terminal device to continue to be determined using the positioning information which is no longer temporally valid, controlling the receiver circuitry to receive the signal comprising further positioning information from the infrastructure equipment of the wireless telecommunications network only after a delay period which is longer than a standard update period for the positioning information.
2 . The method according to claim 1 , wherein the positioning information is positioning assistance information.
3 . The method according to claim 1 , further comprising determining the characteristic of the SIB.
4 . The method according to claim 1 ,
wherein the positioning information is one of a plurality of different types of positioning information, and
wherein each said type of positioning information is associated with a respective temporal validity.
5 . The method according to claim 4 , wherein the characteristic of the SIB of the received signal is the type of positioning information, and the type of positioning information is associated with a time corresponding to the respective temporal validity for determining the temporal validity of the positioning information of the type to be used with the predetermined positioning scheme in determining the spatial position of the terminal device.
6 . The method according to claim 4 ,
wherein each said type of positioning information being for determining the spatial position of the terminal device using a respective positioning scheme, the positioning scheme of each type of positioning information comprising one or more of instructions and additional information for determining the position of the terminal device using that type of positioning information,
wherein the SIB of the received signal is one of a plurality of SIBs receivable by the receiver circuitry, each of the plurality of receivable SIBs comprising one or more of the plurality of types of positioning information each of which are associated with a same temporal validity, and
wherein the characteristic of the SIB of the received signal includes an identifier which distinguishes the SIB of the received signal from each of the other receivable SIBs.
7 . The method according to claim 6 , wherein the identifier which distinguishes the SIB of the received signal from each of the other receivable SIBs is a number indicative of a type of the SIB of the received signal.
8 . The method according to claim 4 ,
wherein the positioning information is associated with a respective geographical region over which the positioning information is valid, and
wherein each of the plurality of receivable SIBs comprises one or more of the plurality of types of positioning information a plurality of which are associated with a same geographical region.
9 . The method according to claim 4 , wherein the SIB of the received signal comprises each of a plurality of types of positioning information, each said type of positioning information being for determining the spatial position of the terminal device using a respective positioning scheme, the positioning scheme of each said type of positioning information comprising one or more of instructions and additional information for determining the position of the terminal device using that type of positioning information, and each said type of positioning information being associated with respective data of the SIB indicating a time for determining the temporal validity positioning information of that type.
10 . The method according to claim 1 , further comprising:
responsive to the terminal device moving from a coverage area of the infrastructure equipment to another coverage area of other infrastructure equipment of the wireless telecommunications network, receiving, using the receiver circuitry, from the other infrastructure equipment, a signal indicative of a second geographical region over which a type of positioning information to be used with the predetermined positioning scheme in determining the spatial position of the terminal device as received from the other infrastructure equipment is valid;
determining whether a first geographical region is different to the second geographical region; and
responsive to the first geographical region being different to the second geographical region, receiving, using the receiver circuitry, from the other infrastructure equipment, a signal comprising further positioning information for allowing the spatial position of the terminal device to be determined using the further positioning information and the predetermined positioning scheme.
11 . The method according to claim 1 , further comprising responsive to the received positioning information being no longer temporally valid, controlling the receiver circuitry to receive, from infrastructure equipment of the wireless telecommunications network, a signal comprising further positioning information for allowing the spatial position of the terminal device to be determined using the further positioning information and the predetermined positioning scheme.
12 . The method according to claim 1 ,
wherein the delay period is longer for terminal devices for which a lower positioning accuracy is acceptable.
13 . The method according to claim 1 ,
wherein the delay period is conditioned on a first condition and a second condition being met, the first condition being that the position information is related to a changed ionospheric model and the second condition being that the terminal device comprises a dual band GPS receiver.
14 . A method of operating infrastructure equipment for use with a wireless telecommunications network, the infrastructure equipment comprising transmitter circuitry, wherein the method comprises:
controlling the transmitter circuitry to transmit, to a terminal device of the wireless telecommunications network, a signal comprising positioning information for allowing a spatial position of the terminal device to be determined using the positioning information and a predetermined positioning scheme associated with the positioning information, the positioning scheme comprising one or more of instructions and additional information for determining the position of the terminal device using the positioning information,
wherein the positioning information is comprised within a system information block (SIB) of the transmitted signal,
wherein the SIB is associated with a characteristic indicative to the terminal device of a temporal validity of the received positioning information so as to allow the terminal device to determine, at a time at which the received positioning information is temporally valid, the spatial position of the terminal device using the received positioning information and the predetermined positioning scheme, wherein the method further comprises:
transmitting a signal indicative of a predetermined characteristic associated with the terminal device, to allow the terminal device to determine whether it is acceptable for the spatial position of the terminal device to continue to be determined using the positioning information which is no longer temporally valid based on at least one of positioning accuracy, power consumption, a type of the receiving circuitry, and data stored in a storage device of the terminal device; and
when it is determined that it is acceptable for the spatial position of the terminal device to continue to be determined using the positioning information which is no longer temporally valid, transmitting a signal comprising further positioning information to the terminal device only after a delay period which is longer than a standard update period for the positioning information.
15 . The method according to claim 14 , wherein the positioning information is positioning assistance information.
16 . The method according to claim 14 ,
wherein the positioning information is one of a plurality of different types of positioning information,
wherein each said type of positioning information is associated with a respective temporal validity, and
wherein the characteristic indicative to the terminal device of a temporal validity of the transmitted positioning information is the type of positioning information, and the type of positioning information is associated with a time corresponding to the respective temporal validity for determining the temporal validity of the positioning information of the type to be used with the predetermined positioning scheme in determining the spatial position of the terminal device.
17 . The method according to claim 14 ,
wherein the positioning information is one of a plurality of types of positioning information, each said type of positioning information being for determining the spatial position of the terminal device using a respective positioning scheme, the positioning scheme of each said type of positioning information comprising one or more of instructions and additional information for determining the position of the terminal device using that type of positioning information,
wherein the SIB of the transmitted signal is one of a plurality of transmittable SIBs receivable by the terminal device, each of the plurality of transmittable SIBs comprising one or more of the plurality of types of positioning information each of which are associated with a same temporal validity,
wherein the characteristic of the SIB of the transmitted signal includes an identifier which distinguishes the SIB of the transmitted signal from each of the other transmittable SIBs, and
wherein the identifier which distinguishes the SIB of the transmitted signal from each of the other transmittable SIBs is a number indicative of a type of the SIB of the transmitted signal.
18 . A circuitry for a terminal device for use with a wireless telecommunications network, the circuitry comprising:
receiver circuitry configured to receive, from infrastructure equipment of the wireless telecommunications network, a signal comprising positioning information for allowing a spatial position of the terminal device to be determined using the positioning information and a predetermined positioning scheme associated with the positioning information, the positioning scheme comprising one or more of instructions and additional information for determining the position of the terminal device using the positioning information, wherein the positioning information is comprised within a system information block (SIB) of the received signal; and processing circuitry configured to:
determine, based on a characteristic of the SIB, a temporal validity of the received positioning information, and
determine, at a time at which the received positioning information is temporally valid, the spatial position of the terminal device using the received positioning information and the predetermined positioning scheme, wherein the processing circuitry is further configured to:
determine, using a predetermined characteristic associated with the terminal device, whether it is acceptable for the spatial position of the terminal device to continue to be determined using the positioning information which is no longer temporally valid based on at least one of positioning accuracy, power consumption, a type of the receiving circuitry, and data stored in a storage device of the terminal device, and
when it is determined that it is acceptable for the spatial position of the terminal device to continue to be determined using the positioning information which is no longer temporally valid, receiving the signal comprising further positioning information from infrastructure equipment of the wireless telecommunications network only after a delay period which is longer than a standard update period for the positioning information.
19 . The circuitry according to claim 18 ,
wherein the positioning information is positioning assistance information, and
wherein the processing circuitry is configured to determine the characteristic of the SIB.
20 . The circuitry according to claim 18 , wherein the processing circuitry is configured to:
responsive to the terminal device moving from a coverage area of the infrastructure equipment to another coverage area of other infrastructure equipment of the wireless telecommunications network, receive, from the other infrastructure equipment, a signal indicative of a second geographical region over which a type of positioning information to be used with the predetermined positioning scheme in determining the spatial position of the terminal device as received from the other infrastructure equipment is valid; and
responsive to a first geographical region being different to the second geographical region, receive, from the other infrastructure equipment, a signal comprising further positioning information for allowing the spatial position of the terminal device to be determined using the further positioning information and the predetermined positioning scheme.