LTE resource allocation
地域：
CA
CA Mountain View
摘要
A method for allocating available transceiver resources across different component carriers (CC) includes obtaining a carrier aggregation capability that includes a list of available CCs supported by the UE at a current location for simultaneous communication with a carrier aggregation capable network. The method also includes, for each of the available CCs, obtaining an expected key performance indicator (KPI) associated with the corresponding available CC at the current location. The method also includes allocating the available transceiver resources across the available CCs based on the expected KPIs at the current location.
說明書
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This disclosure relates to allocating resources in a Long-Term Evolution (LTE) network.
Long-Term Evolution (LTE) is a standard for wireless communication of high-speed data for mobile phones and data terminals. LTE is based on the Global System for Mobile Communications/Enhanced Data Rates for GSM Evolution (GSM/EDGE) and Universal Mobile Telecommunication System/High Speed Packet Access (UMTS/HSPA) network technologies. LTE is configured to increase the capacity and speed of the telecommunication by using different ratio interfaces in addition to core network improvements. LTE supports scalable carrier bandwidths, from 1.4 MHz to 20 MHz and supports both frequency division duplexing (FDD) and time-division duplexing (TDD).
In LTE networks, a wireless User Equipment (UE) can be allocated a traffic channel and a signaling channel by an evolved Node B (eNB) for exchanging signaling and communications with the eNB. Carrier aggregation allows the eNB to allocate multiple component carriers (CCs) jointly for use by the UE in exchanging higher rate communications with the eNB. Carrier aggregation generally defines a number of servicing cells, one for each component carrier. While the UE may support multiple-input multiple-output (MIMO) operation with two layers or four layers on each CC, the number of radio frequency (RF) and/or baseband resources available to the UE is often limited. Accordingly, the UE is often left with having to blindly decide how the available RF and/or baseband resources will be allocated across at least two CCs and communicate the number of layers for each of the at least two CCs to a serving eNB.
權(quán)利要求
What is claimed is:1. A method for allocating available transceiver resources across different component carriers (CCs), the method comprising:obtaining, by data processing hardware of user equipment (UE), a carrier aggregation capability, the carrier aggregation capability comprising a list of available CCs supported by the UE at a current location of the UE for simultaneous communication with a carrier aggregation capable network, the list of available CCs comprising a primary CC and one or more secondary CCs; prior to connecting the UE at the current location to the carrier aggregation capable network via any of the available CCs:for each of the available CCs, obtaining, by the data processing hardware of the UE, an expected key performance indicator (KPI) associated with the corresponding available CC at the current location of the UE, the expected KPI associated with the corresponding available CC at the current location of the UE gathered by one or more respective UEs while operating in a non-carrier aggregation mode, the one or more respective UEs comprising at least one of the UE or one or more other UEs; allocating, by the data processing hardware of the UE, the available transceiver resources across the available CCs based on the expected KPIs at the current location; and after allocating the available transceiver resources to the available CCs, transmitting an allocation message from the UE to at least one base station of the carrier aggregation capable network over the primary CC, the allocation message transmitted over the primary CC from the UE to the at least one base station indicating a number of the available transceiver resources allocated to each of the available CCs at the current location; and after transmitting the allocation message to the at least one base station, connecting, by the data processing hardware to the UE, the UE to the carrier aggregation capable network via any of the available CCs having transceiver resources allocated thereto to operate the UE in a carrier aggregation-mode for simultaneous communication with the carrier aggregation capable network via the at least one base station. 2. The method of claim 1 , wherein the expected KPI comprises an averaged number of multiple-input multiple-output (MIMO) spatial layers used by the UE during one or more previous connections to the corresponding available CC at the current location, the UE operating in the non-carrier aggregation mode during each of the one or more previous connections to the corresponding available CC. 3. The method of claim 2 , further comprising, for each of the available CCs:obtaining, by the data processing hardware, an expected signal-to-interference-plus-noise ratio (SINR) associated with the corresponding available CC at the current location; determining, by the data processing hardware, whether the expected SINR associated with the corresponding available CC at the current location satisfies a SINR threshold; and when the SINR threshold is satisfied, configuring, by the data processing hardware, the UE to operate on the corresponding available CC and support a MIMO antenna configuration. 4. The method of claim 1 , wherein the expected KPI comprises one of an averaged number of multiple-input multiple-output (MIMO) spatial layers used by the UE, an expected signal-to-interference-plus-noise ratio (SINR), an expected reference signal received power (RSRP), or an expected channel quality indicator (CQI). 5. The method of claim 1 , wherein obtaining the expected KPI comprises querying a data source stored on memory hardware of the UE, the data source comprising a mapping of:the current location to corresponding CCs that the UE previously connected to at the current location while operating in a non-carrier aggregation mode; and the corresponding CCs to corresponding expected KPI values. 6. The method of claim 1 , wherein obtaining the expected KPI comprises querying a data source stored on a distributed storage system in communication with the UE, the data source comprising a mapping of:the current location to corresponding CCs that a pool of historical UEs previously connected to at the current location; and the corresponding CCs to corresponding averaged KPI values. 7. The method of claim 6 , wherein each historical UE comprises substantially a same number of available transceiver resources as the UE. 8. The method of claim 1 , wherein allocating the available transceiver resources to the available CCs comprises:ordering the available CCs from the available CC associated with the highest expected KPI to the available CC associated with the lowest expected KPI; and allocating more transceiver resources to the available CC associated with the highest expected KPI than to the available CC associated with the lowest expected KPI. 9. The method of claim 1 , wherein the available transceiver resources comprises a total number of radio frequency (RF) chains of a RF front end of the UE. 10. The method of claim 9 , wherein the total number of RF chains comprises six RF chains. 11. The method of claim 1 , wherein the available transceiver resources comprise available baseband resources associated with multiple-input multiple-output (MIMO) processing and turbo decoding. 12. The method of claim 1 , wherein the current location of the UE comprises a physical location of the UE provided by global positioning system (GPS) coordinates and/or global navigation satellite system (GNSS) coordinates. 13. The method of claim 1 , wherein the UE supports a multiple-input multiple-output (MIMO) antenna configuration on at least one of the CCs when the UE operates in the carrier aggregation-mode. 14. The method of claim 13 , wherein the MIMO antenna configuration supported by the UE on the corresponding CC comprises a 2×2 MIMO antenna configuration or a 4×4 MIMO antenna configuration based on the number of transceiver resources allocated to the corresponding CC. 15. A user equipment (UE) device comprising:a transceiver having available transceiver resources; data processing hardware in communication with the transceiver; and memory hardware in communication with the data processing hardware, the memory hardware storing instructions that when executed on the data processing hardware cause the data processing hardware to perform operations comprising:obtaining a carrier aggregation capability, the carrier aggregation capability comprising a list of available CCs supported by the UE at a current location of the UE for simultaneous communication with a carrier aggregation capable network, the list of available CCs comprising a primary CC and one or more secondary CCs; prior to connecting the transceiver of the UE at the current location to the carrier aggregation capable network via any of the available CCs for simultaneous communication with the carrier aggregation network:for each of the available CCs, obtaining an expected key performance indicator (KPI) associated with the corresponding available CC at the current location of the UE, the expected KPI associated with the corresponding available CC at the current location of the UE gathered by one or more respective UEs while operating in a non-carrier aggregation mode, the one or more respective UEs comprising at least one of the UE or one or more other UEs; allocating the available transceiver resources across the available CCs based on the expected KPIs at the current location; and after allocating the available transceiver resources across the available CCs, transmitting an allocation message from the UE to at least one base station of the carrier aggregation capable network over the primary CC, the allocation message transmitted over the primary CC from the UE to the at least one base station indicating a number of the available transceiver resources allocated to each of the available CCs at the current location; and after transmitting the allocation message to the at least one base station, connecting the transceiver to the carrier aggregation capable network via any of the available CCs having transceiver resources allocated thereto to operate the transceiver in a carrier aggregation-mode for simultaneous communication with the carrier aggregation capable network via the at least one base station. 16. The UE device of claim 15 , wherein the expected KPI comprises an averaged number of multiple-input multiple-output (MIMO) spatial layers used by the transceiver during one or more previous connections to the corresponding available CC at the current location, the transceiver operating in the non-carrier aggregation mode during each of the one or more previous connections to the corresponding available CC. 17. The UE device of claim 16 , wherein the operations further comprise, for each of the available CCs:obtaining an expected signal-to-interference-plus-noise ratio (SINR) associated with the corresponding available CC at the current location; determining whether the expected SINR associated with the corresponding available CC at the current location satisfies a SINR threshold; and when the SINR threshold is satisfied, configuring the transceiver to operate on the corresponding available CC and support a MIMO antenna configuration. 18. The UE device of claim 15 , wherein the expected KPI comprises one of an averaged number of multiple-input multiple-output (MIMO) spatial layers used by the transceiver, an expected signal-to-interference-plus-noise ratio (SINR), an expected reference signal received power (RSRP), or an expected channel quality indicator (CQI). 19. The UE device of claim 15 , wherein obtaining the expected KPI comprises querying a data source stored on the memory hardware, the data source comprising a mapping of:the current location to corresponding CCs that the transceiver previously connected to at the current location while operating in a non-carrier aggregation mode; and the corresponding CCs to corresponding expected KPI values. 20. The UE device of claim 15 , wherein obtaining the expected KPI comprises querying a data source stored on a distributed storage system in communication with the UE device, the data source comprising a mapping of:the current location to corresponding CCs that a pool of historical UEs previously connected to at the current location; and the corresponding CCs to corresponding averaged KPI values. 21. The UE device of claim 15 , wherein each historical UE comprises substantially a same number of available transceiver resources as the UE device. 22. The UE device of claim 15 , wherein allocating the available transceiver resources to the available CCs comprises:ordering the available CCs from the available CC associated with the highest expected KPI to the available CC associated with the lowest expected KPI; and allocating more transceiver resources to the available CC associated with the highest expected KPI than to the available CC associated with the lowest expected KPI. 23. The UE device of claim 15 , wherein the available transceiver resources comprises a total number of radio frequency (RF) chains of a RF front end of the transceiver. 24. The UE device of claim 23 , wherein the total number of RF chains comprises six RF chains. 25. The UE device of claim 15 , wherein the available transceiver resources comprise available baseband resources associated with multiple-input multiple-output (MIMO) processing and turbo decoding. 26. The UE device of claim 15 , wherein the current location of the UE device comprises a physical location of the UE device provided by global positioning system (GPS) coordinates and/or global navigation satellite system (GNSS) coordinates. 27. The UE device of claim 15 , wherein the transceiver supports a multiple-input multiple-output (MIMO) antenna configuration on at least one of the CCs when the transceiver operates in the carrier aggregation-mode. 28. The UE device of claim 27 , wherein the MIMO antenna configuration supported by the transceiver on the corresponding CC comprises one of a 2×2 MIMO antenna configuration or a 4×4 MIMO antenna configuration based on the number of transceiver resources allocated to the corresponding CC.
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