Method, device, base station and UE for uplink transmission main carrier switch and control
First Claim
1. A method for switching an uplink transmission primary carrier, the method comprises:
- obtaining, by a User Equipment (UE), transmission resources of a set of cells configured for the UE to serve the UE, as notified by a network side, wherein the transmission resources comprise configured resources of uplink transmission carriers of a plurality of cells; and
determining, by the UE, that the uplink transmission primary carrier needs to be switched,switching, by the UE, the uplink transmission primary carrier to an uplink transmission carrier corresponding to a new cell, over the configured resources of the uplink transmission carrier of the new cell;
wherein determining, by the UE, that the uplink transmission primary carrier needs to be switched, is through one of the following schemes;
determining, by the UE, that a transmission carrier where a preamble sequence is active needs to be selected as the uplink transmission primary carrier, in a random access procedure initiated by the UE;
determining, by the UE, that a carrier where a Dedicated Scheduling Request (D-SR) is active needs to be selected as the uplink transmission primary carrier, in a D-SR procedure initiated by the UE; and
determining, by the UE, that an uplink transmission carrier of one of the plurality of cells needs to be selected as the uplink transmission primary carrier, upon reception of an uplink scheduling command transmitted by the network side for the cell; and
when determining, by the UE, that the transmission carrier where the preamble sequence is active needs to be selected as the uplink transmission primary carrier, in the random access procedure initiated by the UE, the method further comprises;
when the UE currently selects an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the secondary cell is not configured with random access Contention Based Random Access (CBRA) and D-SR resources, when the UE needs to initiate an uplink scheduling request, switching, by the UE, to a primary cell to initiate a CBRA, and selecting an uplink transmission carrier of the primary cell as the uplink transmission primary carrier;
orwhen the UE currently selects an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the secondary cell is only configured with a D-SR resource, when the UE fails to transmit a D-SR over the secondary cell, switching, by the UE, to a primary cell to initiate a CBRA, and selecting the uplink transmission carrier of the primary cell as the uplink transmission primary carrier;
orwhen the UE currently selects an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the transmission quality of the secondary cell is not satisfactory, selecting, by the UE, the uplink transmission carrier of the primary cell as the uplink transmission primary carrier, and initiating a Routing Area (RA) update.
2 Assignments
0 Petitions
Accused Products
Abstract
A method, device, base station and UE for uplink transmission main carrier switch and control to enable the uplink transmission main carrier of the UE to switch among multiple different cells providing service for the UE, enhance the transmission flexibility of the uplink transmission main carrier of the UE, and at the same time take account of the transmission requirements of transmission power and UE services. The method for uplink transmission main carrier switch and control includes: determining the transmission resources of the cell set used for providing service for the UE, the transmission resources being configured for the user equipment (UE), wherein the transmission resources include the configured resources of uplink transmission carrier of multiple cells, the transmission resources being used for enabling the uplink transmission main carrier of UE to switch among the uplink transmission carriers corresponding to different cells; informing the UE of the transmission resource of the cell set.
16 Citations
18 Claims
-
1. A method for switching an uplink transmission primary carrier, the method comprises:
-
obtaining, by a User Equipment (UE), transmission resources of a set of cells configured for the UE to serve the UE, as notified by a network side, wherein the transmission resources comprise configured resources of uplink transmission carriers of a plurality of cells; and determining, by the UE, that the uplink transmission primary carrier needs to be switched, switching, by the UE, the uplink transmission primary carrier to an uplink transmission carrier corresponding to a new cell, over the configured resources of the uplink transmission carrier of the new cell; wherein determining, by the UE, that the uplink transmission primary carrier needs to be switched, is through one of the following schemes; determining, by the UE, that a transmission carrier where a preamble sequence is active needs to be selected as the uplink transmission primary carrier, in a random access procedure initiated by the UE; determining, by the UE, that a carrier where a Dedicated Scheduling Request (D-SR) is active needs to be selected as the uplink transmission primary carrier, in a D-SR procedure initiated by the UE; and determining, by the UE, that an uplink transmission carrier of one of the plurality of cells needs to be selected as the uplink transmission primary carrier, upon reception of an uplink scheduling command transmitted by the network side for the cell; and when determining, by the UE, that the transmission carrier where the preamble sequence is active needs to be selected as the uplink transmission primary carrier, in the random access procedure initiated by the UE, the method further comprises; when the UE currently selects an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the secondary cell is not configured with random access Contention Based Random Access (CBRA) and D-SR resources, when the UE needs to initiate an uplink scheduling request, switching, by the UE, to a primary cell to initiate a CBRA, and selecting an uplink transmission carrier of the primary cell as the uplink transmission primary carrier;
orwhen the UE currently selects an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the secondary cell is only configured with a D-SR resource, when the UE fails to transmit a D-SR over the secondary cell, switching, by the UE, to a primary cell to initiate a CBRA, and selecting the uplink transmission carrier of the primary cell as the uplink transmission primary carrier;
orwhen the UE currently selects an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the transmission quality of the secondary cell is not satisfactory, selecting, by the UE, the uplink transmission carrier of the primary cell as the uplink transmission primary carrier, and initiating a Routing Area (RA) update. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A User Equipment (UE), comprising a transceiver, a processor, and a memory, wherein:
-
the processor is configured to read programs in the memory to perform the processes of; obtaining transmission resources of a set of cells configured for the UE to serve the UE, as notified by a network side through the transceiver, wherein the transmission resources comprise configured carriers of uplink transmission resources of a plurality of cells; and determining that the uplink transmission primary carrier needs to be switched, switching the uplink transmission primary carrier to an uplink transmission carrier corresponding to a new cell, over the configured resources of the uplink transmission carrier of the new cell; wherein the processor is configured to determine that the uplink transmission primary carrier needs to be switched, is through one of the following schemes; determining that a transmission carrier where a preamble sequence is active needs to be selected as the uplink transmission primary carrier, in a random access procedure initiated by the UE; determining that a carrier where a Dedicated Scheduling Request (D-SR) is active needs to be selected as the uplink transmission primary carrier, in a D-SR procedure initiated by the UE; and determining that an uplink transmission carrier of one of the plurality of cells needs to be selected as the uplink transmission primary carrier, upon reception of an uplink scheduling command transmitted by the network side for the cell; and wherein when the processor determines that the transmission carrier where the preamble sequence is active needs to be selected as the uplink transmission primary carrier, in the random access procedure initiated by the UE, the processor is further configured; when currently selecting an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the secondary cell is not configured with random access Contention Based Random Access (CBRA) and D-SR resources, when it is necessary to initiate an uplink scheduling request, to switch to a primary cell to initiate a CBRA, and to select an uplink transmission carrier of the primary cell as the uplink transmission primary carrier;
orwhen currently selecting an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the secondary cell is only configured with a D-SR resource, when failing to transmit a D-SR over the secondary cell, to switch the UE to a primary cell to initiate a CBRA, and to select an uplink transmission carrier of the primary cell as the uplink transmission primary carrier;
orwhen currently selecting an uplink transmission carrier of a secondary cell as the uplink transmission primary carrier, and the transmission quality of the secondary cell is not satisfactory, to select the uplink transmission carrier of the primary cell as the uplink transmission primary carrier, and to initiate a Routing Area (RA) update. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification