Telecommunications apparatus and method
First Claim
1. A method of transmitting downlink data in a mobile communications system, wherein the mobile communications system comprises a base station configured to communicate wireless signals to one or more terminal devices, the method comprising:
- receiving an indicator of a maximum number of downlink repetitions (Nmax) currently accepted by a terminal device, wherein a number of downlink repetitions indicates a number of times that a same signal is transmitted to the terminal device;
deciding whether to transmit the downlink data to the terminal device based on a type of the downlink data;
setting, in response to deciding to transmit the downlink data, an actual number of downlink repetitions (Ntx) so that the actual number of downlink repetitions Ntx satisfies a condition 1≤
Ntx≤
Nmax;
setting, in response to deciding not to transmit the downlink data, the actual number of downlink repetitions Ntx to zero; and
transmitting the downlink data, to the terminal device, via a signal transmitted a number of times equal to the actual number of downlink repetitions Ntx.
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Abstract
A method of transmitting downlink data in a mobile communications system, wherein the mobile communications system comprises a base station configured to communicate wireless signals to one or more terminal devices. The method comprises receiving an indicator of a maximum number of downlink repetitions “Nmax” currently accepted by a terminal device, wherein a number of downlink repetitions indicates a number of times that the same signal is transmitted to the terminal device; setting an actual number of downlink repetitions “Ntx” so that the actual number of downlink repetitions meets the condition Ntx≤Nmax; and transmitting the downlink data, to the terminal device, wherein the downlink data is transmitted via a signal transmitted a number of times equals to the actual number of downlink repetitions.
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Citations
22 Claims
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1. A method of transmitting downlink data in a mobile communications system, wherein the mobile communications system comprises a base station configured to communicate wireless signals to one or more terminal devices, the method comprising:
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receiving an indicator of a maximum number of downlink repetitions (Nmax) currently accepted by a terminal device, wherein a number of downlink repetitions indicates a number of times that a same signal is transmitted to the terminal device; deciding whether to transmit the downlink data to the terminal device based on a type of the downlink data; setting, in response to deciding to transmit the downlink data, an actual number of downlink repetitions (Ntx) so that the actual number of downlink repetitions Ntx satisfies a condition 1≤
Ntx≤
Nmax;setting, in response to deciding not to transmit the downlink data, the actual number of downlink repetitions Ntx to zero; and transmitting the downlink data, to the terminal device, via a signal transmitted a number of times equal to the actual number of downlink repetitions Ntx. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Circuitry for a base station for transmitting downlink data in a mobile communications system, wherein the base station is configured to communicate wireless signals to one or more terminal devices, the circuitry comprising:
controller circuitry and transceiver circuitry configured to operate together to; receive an indicator of a maximum number of downlink repetitions (Nmax) supported by a terminal device, wherein a number of downlink repetitions indicates a number of times that a same signal is transmitted to the terminal device; decide whether to transmit the downlink data to the terminal device based on a type of the downlink data; set, in response to deciding to transmit the downlink data, an actual number of downlink repetitions (Ntx) so that the actual number of downlink repetitions Ntx satisfies a condition 1≤
Ntx≤
Nmax;set, in response to deciding not to transmit the downlink data the actual number of downlink repetitions Ntx to zero; and
,transmit the downlink data, to the terminal device, via a signal transmitted a number of times equal to the actual number of downlink repetitions Ntx.
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11. A method of receiving downlink data at a terminal device in a mobile communications system, wherein the mobile communications system comprises a base station configured to communicate wireless signals to one or more terminal devices, the method comprising:
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obtaining a maximum number of downlink repetitions (Nmax) for downlink transmissions to the terminal device, wherein a number of downlink repetitions indicates a number of times that a same signal is transmitted to the terminal device; setting a decoding number of repetitions for do link data (Ndec) at a first value, wherein 1≤
Ndec≤
Nmax;attempting to decode downlink data transmissions based on the decoding number of repetitions for downlink data Ndec; and in response to the downlink data transmissions being not successfully decoded; detecting, in response to the Ndec being equal to the Nmax, an unsuccessful decoding of the downlink data transmissions; and in response to the Ndec being less than the Nmax, selecting a new Ndec which is greater than the previous Ndec and which is less than or equal to the Nmax, and again attempting to decode downlink data transmissions. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A terminal device for receiving downlink data in a mobile communications system, wherein the mobile communications system comprises a base station configured to communicate wireless signals to one or more terminal devices, the terminal device comprising:
circuitry configured to; obtain a maximum number of downlink repetitions (Nmax) for downlink transmissions to the terminal device, wherein a number of downlink repetitions indicates a number of times that a same signal is transmitted to the terminal device; set a decoding number of repetitions for downlink data (Ndec) at a first value wherein 1≤
Ndec≤
Nmax;attempt to decode downlink data transmissions based on the decoding number of repetitions for downlink data Ndec; and in response to the downlink data transmissions being not successfully decoded; detect, in response to the Ndec being equal to the Nmax, an unsuccessful decoding of the downlink data transmissions; and in response to the Ndec being less than the Nmax, select a new Ndec which is greater than the previous Ndec and which is less than or equal to the Nmax, and again attempt to decode downlink data transmissions.
Specification