A method, system and device for reporting power headroom
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A power headroom and power headroom information technology, applied in baseband systems, power management, transmission systems, etc., to achieve the effect of resource scheduling
Active Publication Date: 2016-11-09
DATANG MOBILE COMM EQUIP CO LTD
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[0009] To sum up, at present, there is no solution for reporting power headroom in the scenario where the UE aggregates carriers under different eNBs
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example 1
[0174] Example 1. Use the existing PHR triggering and reporting mechanism (PHR triggering and reporting per UE), report the PH information on all activated serving cells to one of the base stations, and exchange PH information between the two base stations through the interface
[0175] Step 1: Inform the UE of the relationship between the serving eNB and the serving cell:
[0176] The base station of the UE's initial access determines the eNB that the UE can aggregate and the cell that can serve the UE under the aggregated eNB according to the UE's location and movement information, and notifies the UE of the mapping between the serving eNB and the serving cell through RRC signaling The relationship may include eNB index information aggregated by UE, serving cell index information, etc.
[0177] Step 2: Per UE PHR parameter configuration:
[0178] The base station configures PHR-related RRC layer parameters for the UE, including periodicPHR-Timer, prohibitedPHR-Timer and dl-...
example 2
[0193] Example 2. Use the existing PHR triggering and reporting mechanism (PHR triggering and reporting per UE) to report the PH information on all activated serving cells. When the serving cells under different eNBs have available uplink resources, they belong to Serving cells of different base stations report PHR;
[0194] Step 1: Notifying the UE of the relationship between the serving eNB and the serving cell;
[0195] Step 2: Per UE PHR parameter configuration;
[0196] Step 3: PHR trigger;
[0197] Wherein, the embodiment of steps 1-3 is the same as that of Example 1.
[0198] Step 4: PHR reporting:
[0199] The PHR reporting principles can follow the PHR reporting principles of R10 and earlier versions. For details, see the background introduction. The PH information belonging to different eNBs is encapsulated in the same PH MAC CE, reflecting the PH information on all activated Serving cells aggregated by the UE. This information is sequentially reported to the eN...
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Abstract
Embodiments of the present invention relate to the field of wireless communication technologies, and in particular to a method, system and device for reporting power headroom, which are used to report power headroom in a scenario where a UE aggregates carriers under different eNBs. A method for reporting power headroom provided by an embodiment of the present invention includes: a user equipment that aggregates resources of multiple network-side devices to determine power headroom information; the user equipment sends the power headroom information to at least one network-side device participating in the aggregation Power headroom information. Since the user equipment that aggregates the resources of multiple network-side devices reports power headroom information to at least one network-side device participating in the aggregation, it is possible to report power headroom information in the scenario where the UE aggregates carriers under different eNBs; further enabling In the case of inter-base station aggregation, multiple base stations can obtain power headroom information, which realizes resource scheduling.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and equipment for reporting power headroom. Background technique [0002] The peak rate of the LTE-A (Long Term Evolution-Advanced, long-term evolution upgrade) system is greatly improved compared with LTE, and it is required to reach 1Gbps in the downlink and 500Mbps in the uplink. At the same time, the LTE-A system requires good compatibility with the LTE system. The LTE-A system introduces a CA (Carrier Aggregation, Carrier Aggregation) technology based on the need to increase the peak rate, be compatible with the LTE system, and make full use of spectrum resources. [0003] The carrier aggregation technology enables a terminal to work simultaneously on multiple cells. These cells may be continuous or discontinuous in the frequency domain, and the bandwidth of each cell may be the same or different. In order to maintain compatibility w...
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