Abstract
The invention relates to methods for informing an eNodeB on the transmit power status of a user equipment in a mobile communication system using component carrier (CC) aggregation. Furthermore the invention is also related to the implementation of these methods by hardware and their implementation in software. The invention proposes procedures that allow the eNodeB to recognize the power usage status of a UE in a communication system using carrier aggregation. The UE indicates to the eNodeB when the UE is close to using its total maximum UE transmit power or when it has exceeded same. This is achieved by the UE including indicator(s) and/or new MAC CEs to one or more protocol data units transmitted on respective component carriers within a single sub-frame that is providing the eNodeB with power status information. The MAC CEs may report a per-UE power headroom. Alternatively the MAC CEs may report per-CC power headrooms and/or power reductions applied to the respective uplink CCs.
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4G | 05/08/2013 | ISLD-201309-038 | PANASONIC CORP | No | Family Member | ||||
4G | 20/09/2018 | ISLD-201812-010 | SUN PATENT TRUST | Yes | Family Member | ||||
4G | 13/12/2020 | ISLD-202012-017 | SUN PATENT TRUST |
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Specification Information
Specification Information
Technologies
Family Information
All Granted Patents In Patent Family : | ---- |
All Pending Patents In Patent Family : | ---- |
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WO2011050921A1 | 4G | 05/08/2013 | ISLD-201309-038 | PANASONIC CORP | Yes | Basis Patent | ||||
WO2011050921A1 | 4G | 20/09/2018 | ISLD-201812-010 | SUN PATENT TRUST | Yes | Basis Patent | ||||
WO2011050921A1 | 4G | 13/12/2020 | ISLD-202012-017 | SUN PATENT TRUST |
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AU2010311871A1 | 4G | 05/08/2013 | ISLD-201309-038 | PANASONIC CORP | Yes | Family Member | ||||
AU2010311871A1 | 4G | 20/09/2018 | ISLD-201812-010 | SUN PATENT TRUST | Yes | Family Member | ||||
AU2010311871A1 | 4G | 13/12/2020 | ISLD-202012-017 | SUN PATENT TRUST |
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AU2010311871A2 | 4G | 05/08/2013 | ISLD-201309-038 | PANASONIC CORP | Yes | Family Member | ||||
AU2010311871A2 | 4G | 20/09/2018 | ISLD-201812-010 | SUN PATENT TRUST | Yes | Family Member | ||||
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AU2010311871B2 | 4G | 20/09/2018 | ISLD-201812-010 | SUN PATENT TRUST | Yes | Family Member | ||||
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ES2688231T3 | 4G | 05/08/2013 | ISLD-201309-038 | PANASONIC CORP | No | Family Member | ||||
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Technologies
Product
Use Cases
Services
Claim
1. An apparatus comprising:
integrated circuitry which, in operation, controls a process of generating a power status report by a user equipment (UE) to inform an eNodeB of a transmit power status of the UE in a wireless communication system using component carrier aggregation, in which two or more component carriers (CCs) are aggregated,
wherein the power status report includes:
(i) a CC specific maximum transmission power, PCMAX,c, for each configured and activated uplink CC, wherein PCMAX,c is set within bounds:
PCMAX _ L,c <=PCMAX,c <=PCMAX _ H,c
where PCMAX _ L,c is a lower bound and PCMAX _ H,c is a higher bound of a CC specific maximum transmission power, and
(ii) a power headroom report indicative of a difference between the CC specific maximum transmission power, PCMAX,c, and an estimated UE transmit power, per each configured and activated uplink CC,
wherein the CC specific maximum transmission power, PCMAX,c, for each configured and activated CC is included in the power status report when a resource is assigned for the configured and activated uplink CC for the UE, and
transmission circuitry which, in operation, controls transmission of the power status report from the UE to the eNodeB via one of the configured and activated uplink CCs.
2. The integrated circuit according to claim 1, wherein the power status report is triggered at activation of a configured uplink CC.
3. The integrated circuit according to claim 1, wherein the power status report takes into account a Physical Uplink Control Channel (PUCCH) power transmitted on the same sub-frame that transmits a Physical Uplink Shared Channel (PUSCH).
4. The integrated circuit according to claim 1, wherein in case the power headroom report is to be transmitted for a configured and activated uplink CC for which there is no resource assignment available in a given sub-frame, the power status report for the CC is generated based on a predefined uplink grant or a predefined Physical Uplink Shared Channel (PUSCH) power.
5. The integrated circuit according to claim 1, wherein the power headroom report and the CC specific maximum transmission power, PCMAX,c, of each configured and activated uplink CC are included into a single Media Access Control (MAC) control element that is used for multiple power headroom reporting with a bitmap,
wherein a bit set at a certain position of the bitmap indicates that there is a power headroom report field included in the MAC control element for the associated CC.
6. The integrated circuit according to claim 1, wherein the power status report further includes indicators that indicate the presence of the CC specific maximum transmission power, PCMAX,c, for the corresponding power headroom report, respectively.
7. The integrated circuit according to claim 1, wherein the CC specific maximum transmission power, PCMAX,c, is a nominal UE maximum transmit power.
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.