WO2017166177A1

WO2017166177A1 - Method and device for switching transmission time interval

Info

Publication number: WO2017166177A1
Application number: PCT/CN2016/078014
Authority: WO
Inventors: 徐敏; 陈君
Original assignee: 华为技术有限公司
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2017-10-05
Also published as: CN107925929A

Abstract

A method for switching a transmission time interval (TTI) comprises: a base station receives, from a user equipment (UE) unit, user equipment transmission power headroom (UPH) information, the UPH information comprising a UPH of a primary carrier of the UE unit and/or a UPH of a secondary carrier of the UE unit; the base station transmits the UPH information to a radio network controller (RNC); and if the RNC determines, on the basis of the UPH information, that a TTI of a target carrier, the primary carrier or the secondary carrier, is to be switched, the base station transmits a switching command to the UE unit, the switching command being used to instruct the UE unit to switch the TTI of the target carrier. The invention can enhance communication efficiency.

Description

Transmission time interval switching method and device

Technical field

The present invention relates to the field of communications, and in particular, to a method and apparatus for switching a Transmission Time Interval (TTI) in the field of communications.

Background technique

In order to achieve higher output rates and better load balancing during data transmission, multi-stream data transmission techniques have been introduced in the communication standard. In a multi-stream scenario, uplink and/or downlink data may be transmitted between a base station and a user equipment (UE, User Equipment) through a plurality of carriers of different frequency points.

Dual Band-Dual Carrier-High Speed Uplink Packet Access (DB-DC-HSUPA) or Cross-Carrier-High Speed Uplink Packet Access (DC-HSUPA, Dual Carrier-High) In the Speed Uplink packet access technology, a carrier is configured with a 2 ms TTI for uplink or downlink transmission. When the UE is at the edge of the cell, the uplink 10 ms TTI needs to be configured for the carrier of the UE (for example, it may be an Enhanced Dedicated Channel (E-DCH) 10 ms TTI). Thus, the carrier is allowed to configure 2ms TTI and 10ms TTI in the multi-stream scenario. For example, for a dual carrier scenario, the uplink TTI may include a primary carrier 2 ms TTI+secondary carrier 10 ms TTI, a primary carrier 10 ms TTI+secondary carrier 2 ms TTI, a primary carrier 10 ms TTI+secondary carrier 10 ms TTI, and the like. When the base station configures multiple carriers, the carrier corresponding to the serving cell of the UE is referred to as a primary carrier, and the other carriers are secondary carriers of the UE. However, when it comes to the handover of the TTI of the carrier in the dual carrier scenario, the prior art only supports the switching of the TTI of the primary carrier. For example, before the TTI of the primary carrier is switched, the cell of the secondary carrier needs to be deactivated (the cell cannot perform data transmission after deactivation), and the UE only has a cell in the primary carrier, and becomes a single-load state. The base station then instructs the UE to perform TTI handover by transmitting a handover command to the UE. The UE switches the TTI of the primary carrier to the new TTI after receiving the handover command. As described above, the prior art only supports the switching of the TTI of the single carrier. In the multi-carrier scenario, only the TTI of the primary carrier is switched, and when the TTI of the primary carrier is switched, the secondary carrier needs to be activated. It is not possible to flexibly switch TTIs of multiple carriers according to communication requirements, which affects the efficiency of communication.

Summary of the invention

Embodiments of the present invention provide a TTI switching method and apparatus to improve communication efficiency.

The first aspect provides a method for switching a TTI, including: receiving, by a base station, user equipment power headroom UPH information, where the UPH information includes an UPH of a primary carrier of the UE and/or a secondary of the UE The UPH of the carrier; the base station transmitting the UPH information to the radio network controller RNC; and determining, in the case that the RNC switches the TTI of the target carrier in the primary carrier and the secondary carrier based on the UPH information The base station sends a handover command to the UE, where the handover command is used to instruct the UE to switch the TTI of the target carrier.

The UPH information sent by the UE to the base station includes the UPH of the primary carrier of the UE and the UPH of the secondary carrier of the UE, so that the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier according to the UPH information, thereby implementing the primary carrier. TTI switching with the secondary carrier improves communication efficiency.

In a possible implementation, the sending, by the base station, a handover command to the UE, includes: sending, by the base station, the handover command to the UE by using the primary carrier, where the handover command includes first indication information, The first indication information is used to indicate that the handover command is a command to switch a TTI of the secondary carrier.

In a possible implementation manner, the target carrier is the secondary carrier, and the base station sends a handover command to the UE, where the base station sends the handover command to the UE by using the secondary carrier.

In a possible implementation, the sending, by the base station, a handover command to the UE, includes: the base station sending the handover command to the UE by using the primary carrier, where the handover command includes second indication information, The second indication information is used to indicate a combination manner of the target TTI of the primary carrier and the secondary carrier.

In a possible implementation, the method further includes: sending, by the base station, third indication information to the RNC, where the third indication information is used to indicate that the UPH in the UPH information is for the primary carrier and/or The UPH of the secondary carrier.

In a possible implementation manner, the UPH information includes an UPH of a primary carrier, and the method further includes: determining, by the base station, an UPH of the secondary carrier according to an UPH of the primary carrier; and sending, by the base station, to the RNC. Adding the UPH of the secondary carrier to the UPH information.

In a possible implementation, the method further includes: the secondary carrier is in a deactivated state, and the base station sends an activation-switching command to the UE, where the activation-switching command is used to instruct the UE to activate the auxiliary Carrier, and switching the TTI of the secondary carrier.

In a possible implementation manner, the switching command is a high speed shared control channel command. HS-SCCH order.

A second aspect provides a method for switching a TTI, including: the user equipment UE sends a user equipment power headroom UPH information to a base station, where the UPH information includes an UPH of a primary carrier of the UE and/or a secondary of the UE. An UPH of a carrier, wherein the UPH information is transmitted by the base station to a radio network controller RNC; and the RNC determines to switch a TTI of a target carrier in the primary carrier and the secondary carrier based on the UPH information. In the case, the UE receives a handover command from the base station, where the handover command is used to instruct the UE to switch the TTI of the target carrier, and the UE switches the TTI of the target carrier according to the handover command.

In a possible implementation, the target carrier is the secondary carrier, and the UE receives a handover command from the base station, where the UE receives the handover command from the base station by using the primary carrier, The handover command includes first indication information, where the first indication information is used to indicate that the handover command is a command to switch a TTI of the secondary carrier.

In a possible implementation, the target carrier is the secondary carrier, and the UE receiving a handover command from the base station includes: the UE receiving the handover command from the base station by using the secondary carrier.

In a possible implementation manner, the receiving, by the UE, a handover command from the base station, includes: receiving, by the UE, the handover command from the base station by using the primary carrier, where the handover command includes second indication information, The second indication information is used to indicate a combination manner of the target TTIs of the primary carrier and the secondary carrier.

In a possible implementation, the method further includes: receiving, by the UE, a reconfiguration message from the RNC, where the reconfiguration message is used to indicate a configuration parameter of a TTI of the secondary carrier; and the UE is configured according to the reconfiguration The message pre-stores the configuration parameters of the TTI of the secondary carrier.

In a possible implementation manner, the UE receives a reconfiguration message from the RNC, where the reconfiguration message is used to indicate a combination manner and a configuration parameter of a TTI of the primary carrier and the secondary carrier; According to the reconfiguration message, configuration parameters of the TTI of the primary carrier and the secondary carrier are pre-stored in the combined manner.

In a possible implementation manner, the secondary carrier is in a deactivated state, and the UE receives an activation-switching command sent by the base station, where the activation-switching command is used to instruct the UE to activate the secondary carrier. And switching the TTI of the secondary carrier.

In a possible implementation manner, the handover command is a high speed shared control channel command HS-SCCH order.

In a third aspect, a method for switching a TTI is provided, the method includes: receiving, by a RNC, a user equipment power headroom UPH information of a user equipment UE, where the UPH information includes an UPH and/or a primary carrier of the UE. Or an UPH of the secondary carrier of the UE; the RNC determines, according to the UPH information, whether to switch the TTI of the target carrier in the primary carrier and the secondary carrier.

In a possible implementation, the method further includes: the RNC receiving third indication information from the base station, where the third indication information is used to indicate that the UPH included in the UPH information is for the primary carrier and/or The UPH of the secondary carrier.

In a possible implementation, the method further includes: the RNC sending a reconfiguration message to the UE, where the reconfiguration message is used to indicate a configuration parameter of a TTI of the secondary carrier, so that the UE is configured according to the Reconfiguring the message, pre-storing the configuration parameters of the TTI of the secondary carrier.

In a possible implementation, the method further includes: sending, by the RNC, a reconfiguration message to the UE, where the reconfiguration message is used to indicate a combination manner and a configuration parameter of a TTI of the primary carrier and the secondary carrier, So that the UE pre-stores the configuration parameters of the TTI of the primary carrier and the secondary carrier in the combined manner according to the reconfiguration message.

In a fourth aspect, a base station is provided, the base station comprising means for performing the handover method of the first aspect.

In a fifth aspect, a UE is provided, the UE comprising means for performing the handover method of the second aspect.

In a sixth aspect, an RNC is provided, the RNC comprising means for performing the handover method of the third aspect.

In a seventh aspect, a base station is provided, the base station comprising a memory, a processor and a transceiver. The memory is for storing a program for executing a program. The transceiver is for communicating with other communication devices. The processor is configured to perform the handover method of the first aspect when the program is executed.

In an eighth aspect, a UE is provided, the UE comprising a memory, a processor and a transceiver. The memory is for storing a program for executing a program. The transceiver is for communicating with other communication devices. The processor is configured to perform the switching method of the second aspect when the program is executed.

In a ninth aspect, an RNC is provided, the RNC including a memory, a processor, and a transceiver. The memory is for storing a program for executing a program. The transceiver is used with He communicates with communication devices. The processor is operative to perform the method of the third aspect when the program is executed.

A tenth aspect provides a system chip, including an input interface, an output interface, at least one processor, and a memory, where the input interface, the output interface, the processor, and the memory are directly connected through a bus, and the processor is configured to execute The code in the memory, when the code is executed, the processor implements the switching method in the first aspect.

In an eleventh aspect, a system chip is provided, including an input interface, an output interface, at least one processor, and a memory, where the input interface, the output interface, the processor, and the memory are directly connected through a bus, and the processor is used to The code in the memory is executed, and when the code is executed, the processor implements the switching method in the second aspect.

According to a twelfth aspect, a system chip is provided, including an input interface, an output interface, at least one processor, and a memory, where the input interface, the output interface, the processor, and the memory are directly connected through a bus, and the processor is used to The code in the memory is executed, and when the code is executed, the processor implements the switching method in the third aspect.

In a thirteenth aspect, a computer readable medium storing program code for execution by a base station, the program code for executing an instruction of a handover method of the first aspect.

In a fourteenth aspect, a computer readable medium storing program code for execution by a UE, the program code for executing an instruction of a handover method of the second aspect.

In a fifteenth aspect, there is provided a computer readable medium storing program code for execution by an RNC, the program code for executing instructions of a handover method of the third aspect.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a schematic diagram of a communication system according to an embodiment of the present invention.

2 is a schematic diagram of a handover process of a primary carrier TTI in the prior art.

FIG. 3 is a schematic diagram of a method for switching a TTI according to an embodiment of the present invention.

4 is a schematic diagram of a TTI format according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a TTI format according to another embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention.

FIG. 8 is a schematic structural diagram of an RNC according to an embodiment of the present invention.

FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention.

FIG. 10 is a schematic structural diagram of a UE according to an embodiment of the present invention.

FIG. 11 is a schematic structural diagram of an RNC according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example, Global System of Mobile communication ("GSM") system, Code Division Multiple Access (Code Division Multiple Access, referred to as "CDMA") system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service ("GPRS") system, Long Term Evolution (Long Term Evolution) , referred to as "LTE" system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Universal Mobile Communication System (Universal Mobile Telecommunication System (UMTS) or Worldwide Interoperability for Microwave Access (WiMAX) communication system.

It should be understood that the technical solution of the embodiment of the present invention may be applied to a scenario in which multiple carriers are deployed, for example, may be a scenario including DC-HSUPA and DB-DC-HSUPA.

It should be understood that, in the embodiment of the present invention, a user equipment (User Equipment, referred to as "UE") may be referred to as a terminal (Mobile), a mobile station ("MS" for short) or a mobile terminal (Mobile Terminal). And so on, the user equipment can communicate with one or more core networks via a Radio Access Network ("RAN"), for example, the user equipment can be a mobile phone (or "cellular" phone) Or a computer having a mobile terminal, etc., for example, The user equipment can also be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange voice and/or data with the wireless access network.

It should be understood that the TTI handover in the embodiment of the present invention may include an uplink TTI handover.

FIG. 1 shows a schematic diagram of a communication system to which a handover method of an embodiment of the present invention can be applied. As shown in FIG. 1 , under the DC-HSUPA, the primary carrier cell and the secondary carrier cell are cells of different frequency points of the same base station, and the UE can receive and transmit data from the primary carrier cell and the secondary carrier cell at the same time. The primary carrier and the secondary carrier can be configured with multiple types of TTIs. For example, a carrier is usually configured with a 2ms TTI, but a 2ms TTI and a 10ms TTI can also be configured in the initial configuration.

Optionally, in the communication system of FIG. 1, there may also be a third cell with the same carrier as the primary carrier and a fourth cell with the same carrier as the secondary carrier, the two cells being the same base station, which is different from the base station in FIG. The two cells can simultaneously receive uplink data sent by the UE, but cannot schedule downlink data to the UE. If a TTI handover occurs, the relevant base stations of the two cells can be notified.

In the prior art, the TTI handover of the primary carrier includes two methods, one is fast handover of the primary carrier TTI, and the other is configuration switching by RRC (RRC, Radio Resource Control) signaling.

FIG. 2 is a schematic diagram showing a switching process of a TTI of a primary carrier in the prior art. A method of fast switching of a primary carrier TTI in the prior art will be described below with reference to FIG. It should be noted that, if the handover of the TTI for the primary carrier is in a multi-stream scenario, the cell of the secondary carrier needs to be deactivated before the TTI of the primary carrier is switched, and the cell of the secondary carrier cannot be deactivated after deactivation. For transmission, the relevant parameters need to be reconfigured through the RRC message before the data transmission can be performed, and the high speed shared control channel order (HS-SCCH order) cannot be used to activate the use. It can be understood that after the cell of the secondary carrier is deactivated, the switching of the TTI is equivalent to being located in a single carrier scenario. As shown in Figure 2, the handover process includes:

S1. The RNC (Radio Network Controller) sends an RRC reconfiguration message to the UE.

The reconfiguration message may include: Radio Bearer Reconfiguration, Radio Bearer Setup, Physical Channel Reconfiguration, Transport Channel Reconfiguration, and Transport Channel Reconfiguration. Information such as reconfiguration, activation set update (Calculation as Active set update), and Cell update (Cell update), the reconfiguration message may also include related configuration information of the enhanced dedicated channel (E-DCH, Enhanced Dedicated Channel) TTI. And other related information, so that the UE configures and uses the relevant parameters according to the information, the reconfiguration message may further include E-DCH TTI pre-configuration information, and the E-DCH pre-configuration information may be stored in the variable. OTHER_TTI_E-DCH_CONFIGURATION (meaning other TTI_E-DCH_ reconfiguration), so that the UE is pre-configured according to the reconfiguration information.

S2. The UE sends a filtered user equipment power headroom measurement report (Filtered UPH Measurements Report) to the base station.

S3. The base station sends radio link parameter update indication (Radio Link Parameter Update Indication) information to the RNC, where the radio link parameter update indication information includes a filtered UPH measurement report.

S4. When receiving the filtered UPH measurement report and determining to switch the TTI of the primary carrier, the RNC sends a Radio Link Reconfiguration Prepare message to the base station, where the radio link reconfiguration preparation information is used. Instructing the base station to configure configuration parameter information corresponding to the target TTI of the primary carrier, the base station may prepare to send a corresponding handover instruction to the UE according to the radio link reconfiguration preparation message, where the handover instruction is used to instruct the UE to switch the TTI configuration information of the primary carrier. Configuration parameters to the target TTI.

S5: After completing the pre-configuration, the base station sends Radio Link Reconfiguration Ready information to the RNC.

S6. After receiving the radio link reconfiguration complete information, the RNC sends radio link reconfiguration commit (Radio Link Reconfiguration Commit) information to the base station. The radio link reconfiguration assignment information is used to indicate a target time of the base station TTI handover.

S7. The base station sends an HS-SCCH order (the HS-SCCH order, that is, a command format of the handover instruction in S4) to the UE, where the HS-SCCH order is used to instruct the UE to switch the TTI of the primary carrier.

For example, the HS-SCCH order may include 2ms TTI handover to 10ms TTI and 10ms TTI handover to 2ms TTI two orders.

S8. After receiving the HS-SCCH order, the UE switches the TTI of the primary carrier.

S9. The base station sends radio link parameter update indication (Radio Link Parameter Update Indication) information to the RNC to indicate complete TTI handover of the primary carrier.

Alternatively, the TTI handover to the primary carrier in the prior art may also be configured by RRC signaling. Specifically, the UE may also trigger the RNC to perform TTI handover by reporting RRC signaling such as 6a or 6d. The RNC carries the configuration information of the new TTI of the primary carrier in the reconfiguration message sent to the base station, and the base station and the UE according to the new TTI. The configuration information switches the TTI of the primary carrier to the configuration of the new TTI. After the triggering, the RNC switches the TTI of the primary carrier through the RRC reconfiguration procedure. However, the scheme takes a long time and affects the data transmission success rate and rate of the UE, and may even cause dropped calls.

As described above, in the prior art multi-stream scenario (for example, a dual-carrier scenario), there is only a method for TTI handover for a single carrier, and the current communication standard does not support simultaneous or different time for the primary carrier and the secondary carrier. Perform TTI switching. In a multi-stream scenario, only the TTI of the primary carrier can be switched, and when the TTI of the primary carrier is switched, the secondary carrier needs to be deactivated, and the TTI of the carrier cannot be flexibly switched according to the communication requirement. The efficiency of communication. The present invention provides a method for switching the TTIs of the primary carrier and the secondary carrier, including the method of simultaneously switching the TTI of the primary and secondary carriers and performing TTI handover on any of the primary and secondary carriers, thereby improving communication efficiency.

FIG. 3 is a schematic diagram of a method 100 for switching a TTI according to an embodiment of the present invention. As shown in FIG. 3, the method 100 may be performed by a UE, a base station, and an RNC.

S101, the UE sends the User Equipment Power Headroom (UPH) information to the base station, where the UPH information includes the UPH of the primary carrier of the UE and/or the UPH of the secondary carrier of the UE;

It should be understood that the UPH may be a filtered UPH (Filtered UPH), that is, a filtered UPH. The above-mentioned UPH may also be an UPH that has undergone other processing, which is not limited by the present invention.

Optionally, in the embodiment of the present invention, the UPH information may include both the UPH of the primary carrier and the UPH of the secondary carrier in one transmission. The UPH information may also include the UPH of the primary carrier and the UPH of the secondary carrier in multiple transmissions, respectively. In other words, the UPH information sent by the UE to the base station may include only the UPH of the primary carrier or the UPH of the secondary carrier, and may also include the UPH of the primary carrier and the UPH of the secondary carrier.

Optionally, when the UPH information sent by the UE to the base station includes only the UPH of the primary carrier, the base station may determine the UPH of the secondary carrier according to the UPH of the primary carrier, and add the UPH of the secondary carrier to the UPH information sent to the RNC. Alternatively, the base station may also send the UPH of the primary carrier to the RNC, and the RNC determines the UPH of the secondary carrier according to the UPH of the primary carrier.

For example, UPH refers to the ratio of the maximum transmission power of the user equipment to the Dedicated Physical Control Channel (DPCCH) code power on the carrier, where the DPCCH code power on the carrier refers to the DPCCH sent by the user equipment on the carrier. Channel code power. The maximum transmission power of the user equipment is a known constant. In the case that the secondary carrier is deactivated, the base station and the UE do not transmit the DPCCH channel on the secondary carrier, but the base station separately transmits the pilot signal on the primary carrier and the secondary carrier, and the UE may report the primary carrier received by the UE to the base station or the RNC. And the power measurement result of the pilot signal of the secondary carrier, the base station or the RNC can determine according to the power measurement result The first power difference value of the pilot signals of the primary carrier and the secondary carrier. As an example, the base station and the RNC may approximate the power difference of the pilot signals of the primary and secondary carriers to the power difference of the DPCCH. Therefore, the base station or the RNC may determine the first power difference value as the second power difference value of the DPCCH of the primary carrier and the secondary carrier; the base station or the RNC may calculate the UPH of the secondary carrier according to the UPH of the primary carrier and the second power difference. .

Optionally, the base station and the RNC may determine the UPH of the secondary carrier by using the UPH of the primary carrier instead of the UPH of the primary carrier. For example, when the secondary carrier is in an inactive state, the base station or RNC has pre-configured the power value of the initial DPCCH on the secondary carrier. The base station or the RNC may determine the UPH of the secondary carrier of the UE according to the power value of the DPCCH of the pre-configured secondary carrier and the maximum power transmission value of the UE. Alternatively, the base station or the RNC may also adopt other methods to determine the UPH of the secondary carrier, which is not limited in this embodiment of the present invention.

S102. The base station sends the UPH information to a radio network controller RNC.

S103. If the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier based on the UPH information, the base station sends a handover command to the UE, where the handover command is used. Instructing the UE to switch the TTI of the target carrier.

It should be understood that the foregoing target carrier may include only one of the primary carrier and the secondary carrier, and may also include the primary carrier and the secondary carrier.

Optionally, in the case that the RNC determines to switch the TTIs of the target carriers in the primary carrier and the secondary carrier based on the UPH information, the RNC may send the TTI handover indication information to the base station. For example, the TTI handover indication information may be the Radio link reconfiguration preparation and/or radio link reconfiguration assignment information in the method, the TTI handover indication information is used to indicate a configuration parameter and/or a handover time of a target TTI of the target carrier to be switched by the base station, so as to facilitate the base station And transmitting, according to the TTI handover indication information, a handover command to the UE, and configuring a corresponding configuration parameter of the TTI of the target carrier to the base station.

Optionally, the handover command may be a High Speed Shared Control Channel (HS-SCCH) command.

In the embodiment of the present invention, the UPH information sent by the UE to the base station includes the UPH of the primary carrier of the UE and the UPH of the secondary carrier of the UE, so that the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier according to the UPH information. Therefore, TTI switching between the primary carrier and the secondary carrier is implemented, and communication efficiency is improved.

Optionally, the method further includes:

S104. The UE switches a TTI of the target carrier according to the handover command.

It should be understood that, in the embodiment of the present invention, the method 100 may be used in a multi-carrier scenario, where the multi-carrier scenario may include a dual-carrier scenario. In other words, the secondary carrier in the method 100 may be multiple secondary carriers or one secondary carrier.

Optionally, as an embodiment, the secondary carrier is in a deactivated state, the handover method further includes: the base station sending an activation-switching command to the UE, where the activation-switching command is used to indicate the UE Activating the secondary carrier and switching a TTI of the secondary carrier.

For example, the activation-switching command may be an HS-SCCH order.

For example, as an example, when the secondary carrier of the UE is in the deactivated state, the UPH information reported by the UE includes only the UPH of the primary carrier, and after receiving the UPH information, the base station may determine the UPH of the secondary carrier according to the UPH of the primary carrier. Alternatively, as described above, the base station may also determine the UPH of the secondary carrier by using other methods, and details are not described herein again. In case the base station determines to activate the secondary carrier, the base station may determine whether to switch the TTI of the secondary carrier according to the UPH of the secondary carrier. The TTI for switching the secondary carrier here refers to whether to switch the pre-deactivated or initially configured TTI of the secondary carrier after the secondary carrier is activated. If the base station determines that the TTI of the secondary carrier is not switched after the secondary carrier is activated, the base station may send an activation command to the UE to activate the secondary carrier, and the configuration parameter of the activated secondary carrier TTI may maintain the initial configuration of the TTI or deactivate the secondary carrier. The configuration parameter of the previous TTI; if the base station determines to activate the secondary carrier and switches the TTI of the secondary carrier, the base station sends an activation-switching command to the UE to activate the secondary carrier and switch the TTI of the secondary carrier, which may be defined between the base station and the UE. - Switch commands. The determining, by the base station, whether to switch the TTI of the secondary carrier may be determining whether to switch the secondary carrier according to the UPH of the secondary carrier. For example, if the UPH of the secondary carrier is greater than or equal to the first threshold, the uplink coverage is better, and the TTI of the secondary carrier can be switched from 10 ms to 2 ms. If the UPH of the secondary carrier is less than or equal to the second threshold, When the uplink coverage is poor, the TTI of the secondary carrier can be switched from 2ms to 10ms. Alternatively, the base station may determine whether to switch the TTI of the secondary carrier according to the indication according to whether the RNC switches the indication of the TTI of the secondary carrier.

Optionally, the UE may pre-configure the TTI parameters related to the primary carrier and the secondary carrier. The TTI parameter can be obtained from the RNC or can be obtained by other means, which is not limited by the present invention. For example, the UE may receive reconfiguration information from the RNC, where the reconfiguration information is used to indicate configuration parameters of the TTI of the primary carrier and/or the secondary carrier of the UE, and the UE may pre-store the primary carrier and/or the secondary carrier according to the reconfiguration information. TTI configuration parameters. As an embodiment, as shown in FIG. 4, when the UE is pre-configured, the TTI pre-configuration may be performed by using the primary and secondary independent storage manners. That is, the TTI parameters corresponding to the primary carrier and the secondary carrier are independently saved and configured.

For example, in a dual-carrier scenario, the TTI format of the primary carrier and the secondary carrier may include a 2 ms TTI and a 10 ms TTI, and the primary and secondary independent storage modes may include:

(1) Primary carrier 2ms TTI;

(2) Primary carrier 10ms TTI;

(3) secondary carrier 2ms TTI;

(4) The secondary carrier 10msTTI.

The UE may independently configure configuration parameters corresponding to each TTI of the primary carrier and the secondary carrier. That is, the RNC can configure the configured TTI parameters for the primary carrier and the secondary carrier in the reconfiguration message, and add the pre-configured TTI information. For example, the initial configuration of the UE using the primary carrier to configure the 2ms TTI and the secondary carrier to the 2ms TTI may further pre-configure the primary carrier 10ms TTI parameter configuration, the secondary carrier 10ms TTI parameter configuration, and the UE stores the relevant used TTI information and the pre-configured TTI. The information, when the primary carrier and/or the secondary carrier TTI handover occurs, does not need to reconfigure the corresponding configuration information, but directly requests the UE to use the new configuration through a handover command (for example, HS-SCCH order), reducing the configuration. The process speeds up the switching time.

Optionally, the base station may separately send a corresponding handover instruction by using the primary carrier and the secondary carrier, that is, the base station sends a handover command for the TTI of the primary carrier by using the primary carrier, and the base station sends a handover command for the TTI of the secondary carrier by using the secondary carrier.

Alternatively, the base station may also transmit a handover command for the TTI of the secondary carrier through the primary carrier. As an embodiment, when the base station sends a handover command through the primary carrier, the handover command may include first indication information, where the first indication information is used to indicate that the handover command corresponds to a primary carrier or a secondary carrier. For example, the first indication information may be used to indicate that the handover command is a command to switch the TTI of the primary carrier, or may be used to indicate that the handover command is a handover command for the secondary carrier. For example, a 1 bit indication bit may be added to the handover command. When the indication bit is set to 1, it indicates that the handover command is a handover command for the primary carrier. When the indication bit is set to 0, the handover command is for the secondary carrier. Switching command. Alternatively, the HS-SCCH order form for the 2ms handover to the secondary carrier for 2ms and the HS-SCCH order for the secondary carrier 10ms for the 2ms may be added.

As an embodiment, as shown in FIG. 5, the UE may also perform pre-configuration by using a primary-slave joint storage manner, where the TTI configuration parameters corresponding to the primary carrier and the secondary carrier are combined, and then saved and combined in a TTI manner. Configuration. For example, the UE may receive reconfiguration information sent by the RNC, where the reconfiguration information may indicate a combination manner and configuration parameters of the TTI of the primary carrier and the secondary carrier of the UE, and the UE may pre-store the primary carrier in the foregoing combination according to the reconfiguration information. And auxiliary Wave configuration parameters.

For example, in a dual carrier scenario, the form of the TTI information of the primary carrier and the secondary carrier may each include a 2 ms TTI and a 10 ms TTI, which may include four combinations:

(1) primary carrier 2ms TTI + secondary carrier 2ms TTI;

(2) primary carrier 2ms TTI + secondary carrier 10ms TTI;

(3) primary carrier 10ms TTI + secondary carrier 2ms TTI;

(4) Primary carrier 10 ms TTI + secondary carrier 10 ms TTI.

The UE may perform pre-configuration of related TTI parameters corresponding to the four combinations. The network may configure one of the configuration forms as the currently used parameter to the UE, and the UE stores it as a set of TTI parameters; at the same time, the network may also use the TTI configuration parameter of one or more of the other three in the combination. Pre-configuration information, the UE stores the pre-configuration information to prepare for the TTI handover that occurs later. It should be noted that, in the manner in which the primary and secondary joints are stored, even the configuration parameters of the TTI of the same format of the same carrier may be different in different combinations. For example, some of the configuration parameters in the primary carrier 2 ms TTI in combination mode (1) and combination mode (2) may be different.

Optionally, as an embodiment, the handover command sent by the base station to the UE may include second indication information, where the second indication information is used to indicate a combination manner of the target TTIs of the primary carrier and the secondary carrier. It should be understood that the combination manner of the target TTI may refer to a combination manner of the TTIs of the primary carrier and the secondary carrier to be switched.

For example, in a manner in which the primary and secondary joints are saved, the base station may send a handover command to the UE through the primary carrier. The handover command can take effect on two carriers of the primary carrier and the secondary carrier. Among them, different switching commands can be defined according to different combinations of target TTIs. For example, the switching command may be defined to include a combination of the target carrier and the target TTI after the secondary carrier switching. For example, the same handover command is used regardless of whether the primary carrier 2ms TTI+secondary carrier 10ms TTI or the primary carrier 2ms TTI+secondary carrier 2ms TTI is switched to the primary carrier 10ms TTI+secondary carrier 10ms TTI. Therefore, in this definition mode, the number of types of handover commands may be the same as the number of combinations of the primary and secondary carrier TTIs. For example, in the embodiment of FIG. 5, the switching command may indicate the combination of the four TTIs by 00, 01, 10, and 11, respectively. So in this definition mode, only 4 switching commands are needed. In the embodiment of the present invention, the second indication information in the handover command indicates the TTI to be switched to the UE by combining the target TTIs of the primary carrier and the secondary carrier, which simplifies the type of the handover command.

Optionally, the configuration process of the TTI handover between the base station and the RNC may adopt a synchronous reconfiguration process.

Optionally, after receiving the UPH information from the UE, the base station may add the third indication information to the UPH information, where the third indication information is used to indicate the UPH and the primary carrier that are included in the UPH information. Correspondence between the secondary carriers. For example, the third indication information may indicate that the UPH included in the UPH information is the UPH of the primary carrier, or indicates that the UPH included in the UPH information is the UPH of the secondary carrier. For example, an information element (IE, Information Element) may be added to the UPH information, and the IE indicates that the UPH in the UPH information belongs to the primary carrier or the secondary carrier. Alternatively, an IE is added to transmit the UPH value of the secondary carrier.

Optionally, when the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier, the RNC may send the handover indication information to the base station, where the handover indication information is used to indicate that the TTI of the target carrier is switched. A scenario in which TTI switching is required for the primary carrier and the secondary carrier occurs one after another. Considering that the RNC sends information to the base station, there is a delay in the Iub interface. The Iub interface is an interface between the RNC and the NodeB. The RNC and the NodeB transmit information through the interface. It is possible that the RNC decides to cut the TTI of the primary carrier first. Determining to switch the TTI of the secondary carrier, but when transmitting the related message, the reconfiguration message of the TTI of the secondary carrier that may be started later first arrives at the base station, and the base station may receive the relevant parameter after the TTI parameter of the secondary carrier is configured. The reconfiguration message of the primary carrier TTI that is started first, and the base station sends a handover command to the UE in chronological order, thereby causing a fault in the TTI handover process.

In order to solve the above problem, in the embodiment of the present invention, in the case that the RNC determines to perform TTI handover on the primary carrier and the secondary carrier in sequence, the RNC may determine whether the time interval between the two TTI handovers is less than a predetermined threshold. When the time interval is less than the predetermined threshold, the RNC may wait for a period of time until the previous TTI handover procedure ends, and then initiate the subsequent TTI handover procedure.

Optionally, in the embodiment of the present invention, when the handover indication information sent by the RNC to the base station is used to indicate the combination manner of the target TTI to be switched between the primary carrier and the secondary carrier, the RNC determines to perform TTI on the primary carrier and the secondary carrier in sequence. If the RNC determines that the time interval between the two TTI handovers is less than the predetermined threshold, the RNC may add fourth indication information to the handover indication information of the subsequent handover procedure, where the fourth indication information is used to indicate the previous one. The switching process is invalid. For example, the fourth indication information may include a transaction identifier of a previous handover procedure. When the base station receives the two handover indication information sent by the RNC in a short time, the base station may determine, according to the fourth indication information in one of the handover indication information, that the handover procedure indicated by the other handover indication information is invalid, so that only valid Follow-up corresponding to the switching indication information Process. For example, when the current TTI of the UE is combined with the primary carrier 2 ms TTI + the secondary carrier 2 ms TTI, the target TTI to be switched indicated by the handover indication information sent by the RNC to the base station is combined with the primary carrier 2 ms TTI + the secondary carrier 10 ms TTI, in a shorter The target TTI to be switched indicated by the handover indication information sent by the RNC to the base station is combined with the primary carrier 10 ms TTI + the secondary carrier 10 ms TTI, and the RNC may add the fourth indication information to the handover indication information that is sent later, the fourth indication information. The handover procedure for instructing the base station to indicate the handover indication information in the first transmission is invalid. After receiving the two handover indication information, the base station may perform only the handover procedure indicated by the subsequent handover indication information according to the fourth indication information, that is, execute The TTI of the carrier of the UE is switched to the handover procedure of the primary carrier 10 ms TTI + the secondary carrier 10 ms TTI.

The method for switching the TTI of the embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 5. The apparatus of the embodiment of the present invention will be described in detail below with reference to FIG.

FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention. It should be understood that the base station 600 of FIG. 6 is capable of performing the various steps of the handover method performed by the base station above, and to avoid repetition, it will not be described in detail herein. The base station 600 includes:

The receiving module 610 is configured to receive user equipment power headroom UPH information from the user equipment UE, where the UPH information includes an UPH of the primary carrier of the UE and/or an UPH of the secondary carrier of the UE;

The sending module 620 is configured to send the UPH information to the radio network controller RNC.

The sending module 610 is further configured to: when the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier based on the UPH information, send a handover command to the UE, where The handover command is used to instruct the UE to switch the TTI of the target carrier.

FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention. It should be understood that the UE 700 of FIG. 7 can perform the various steps of the handover method performed by the base station in the above, and in order to avoid repetition, it will not be described in detail herein. UE700 includes:

The sending module 710 is configured to send, to the base station, user equipment power headroom UPH information, where the UPH information includes an UPH of a primary carrier of the UE and/or an UPH of a secondary carrier of the UE, where the UPH information is The base station sends to the radio network controller RNC;

The receiving module 720 is configured to determine, on the RNC, the primary carrier based on the UPH information. And receiving, by the base station, a handover command, where the handover command is used to instruct the UE to switch the TTI of the target carrier, where the TTI of the target carrier is switched.

The switching module 730 is configured to switch the TTI of the target carrier according to the handover command.

FIG. 8 is a schematic structural diagram of an RNC according to an embodiment of the present invention. It should be understood that the RNC 700 of FIG. 8 is capable of performing the various steps of the handover method performed by the base station in the above, and to avoid repetition, it will not be described in detail herein. The RNC700 includes:

The receiving module 810 is configured to receive user equipment power headroom UPH information of the user equipment UE, where the UPH information includes an UPH of a primary carrier of the UE and/or an UPH of a secondary carrier of the UE;

The determining module 820 is configured to determine, according to the UPH information, whether to switch the TTI of the target carrier in the primary carrier and the secondary carrier.

FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention. It should be understood that the base station 900 of FIG. 9 is capable of performing the various steps of the handover method performed by the base station above, and to avoid repetition, it will not be described in detail herein. The base station 900 includes:

a memory 910, configured to store a program;

a transceiver 920 for communicating with other communication devices;

The processor 930 is configured to execute a program in the memory 910. When the program is executed, the processor is configured to control the transceiver 920 to receive user equipment power headroom UPH information from the user equipment UE, where the UPH information includes Determining the UPH of the primary carrier of the UE and/or the UPH of the secondary carrier of the UE; transmitting the UPH information to the radio network controller RNC; determining, at the RNC, the primary carrier and the location based on the UPH information When the TTI of the target carrier in the secondary carrier is switched, the handover command is sent to the UE, and the handover command is used to instruct the UE to switch the TTI of the target carrier.

In the embodiment of the present invention, the UPH information sent by the UE to the base station includes the primary carrier of the UE. The UPH and the UPH of the secondary carrier of the UE, so that the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier according to the UPH information, thereby implementing TTI handover on the primary carrier and the secondary carrier, and improving communication efficiency.

FIG. 10 is a schematic structural diagram of a UE according to an embodiment of the present invention. It should be understood that the UE 1000 of FIG. 10 can perform the various steps of the handover method performed by the base station in the above, and in order to avoid repetition, it will not be described in detail herein. UE1000 includes:

a memory 1010, configured to store a program;

The transceiver 1020 is configured to communicate with other communication devices;

The processor 1030 is configured to execute a program in the memory 1010. When the program is executed, the processor 1030 is configured to control the transceiver 1020 to send user equipment power headroom UPH information to the base station, where the UPH information includes the UPH of the primary carrier of the UE and/or UPH of the secondary carrier of the UE, wherein the UPH information is transmitted by the base station to a radio network controller RNC; determining, by the RNC, the primary carrier based on the UPH information And receiving, by the base station, a handover command, where the handover command is used to instruct the UE to switch the TTI of the target carrier, where the TTI of the target carrier is switched.

The processor 1030 is further configured to switch a TTI of the target carrier according to the handover command.

FIG. 11 is a schematic structural diagram of an RNC according to an embodiment of the present invention. It should be understood that the RNC 1100 of FIG. 11 is capable of performing the various steps of the handover method performed by the base station in the above, and to avoid repetition, it will not be described in detail herein. The RNC1100 includes:

a memory 1110, configured to store a program;

a transceiver 1120, configured to communicate with other communication devices;

The processor 1130 is configured to execute a program in the memory 1120. When the program is executed, the processor 1130 is configured to control the transceiver 1120 to receive user equipment power headroom UPH information of the user equipment UE, where the UPH information includes The UPH of the primary carrier of the UE and/or the UPH of the secondary carrier of the UE;

The processor 1130 is further configured to determine, according to the UPH information, whether the primary carrier and the The TTI of the target carrier in the secondary carrier is switched.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that in the embodiment of the present invention, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separated as The components displayed by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method of various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The technical features and descriptions in the above embodiments are used in order to make the application documents clear and clear, and can be understood to be applicable to other embodiments, and will not be further described in other embodiments.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention by any person skilled in the art. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A method for switching a transmission time interval TTI, comprising:

The base station receives the user equipment power headroom UPH information from the user equipment UE, where the UPH information includes the UPH of the primary carrier of the UE and/or the UPH of the secondary carrier of the UE;

Sending, by the base station, the UPH information to a radio network controller RNC;

When the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier based on the UPH information, the base station sends a handover command to the UE, where the handover command is used to indicate The UE switches the TTI of the target carrier.
The handover method according to claim 1, wherein the target carrier is the secondary carrier.

Sending, by the base station, a handover command to the UE, including:

The base station sends the handover command to the UE by using the primary carrier, where the handover command includes first indication information, where the first indication information is used to indicate that the handover command is performed on a TTI of the secondary carrier. Switch the command.
The handover method according to claim 1, wherein the target carrier is the secondary carrier.

Sending, by the base station, a handover command to the UE, including:

The base station sends the handover command to the UE by using the secondary carrier.
The handover method according to claim 1, wherein the base station sends a handover command to the UE, including:

The base station sends the handover command to the UE by using the primary carrier, where the handover command includes second indication information, where the second indication information is used to indicate a target TTI of the primary carrier and the secondary carrier. The way of combining.
The switching method according to any one of claims 1 to 4, wherein the switching method further comprises:

The base station sends third indication information to the RNC, where the third indication information is used to indicate that the UPH in the UPH information is an UPH for the primary carrier and/or the secondary carrier.
The handover method according to any one of claims 1 to 5, wherein the UPH information includes an UPH of a primary carrier, and the handover method further includes:

Determining, by the base station, an UPH of the secondary carrier according to an UPH of the primary carrier;

The base station adds the UPH of the secondary carrier to the UPH information sent to the RNC.
The handover method of claim 1, wherein the secondary carrier is in a deactivated state, the handover method further comprising:

The base station sends an activation-switching command to the UE, where the activation-switching command is used to instruct the UE to activate the secondary carrier, and switch the TTI of the secondary carrier.
The handover method according to any one of claims 1 to 7, wherein the handover command is a high speed shared control channel command HS-SCCH order.
A transmission time interval TTI switching method, comprising:

The user equipment UE sends the user equipment power headroom UPH information to the base station, where the UPH information includes the UPH of the primary carrier of the UE and/or the UPH of the secondary carrier of the UE, where the UPH information is sent by the base station to Radio network controller RNC;

When the RNC determines to switch the TTI of the target carrier and/or the target carrier in the secondary carrier based on the UPH information, the UE receives a handover command from the base station, where the handover command is used by Instructing the UE to switch the TTI of the target carrier;

The UE switches the TTI of the target carrier according to the handover command.
The handover method according to claim 9, wherein the target carrier is the secondary carrier.

Receiving, by the UE, a handover command from the base station, including:

The UE receives the handover command from the base station by using the primary carrier, where the handover command includes first indication information, where the first indication information is used to indicate that the handover command is performed on a TTI of the secondary carrier. Switch the command.
The handover method according to claim 9, wherein the target carrier is the secondary carrier.

Receiving, by the UE, a handover command from the base station, including:

The UE receives the handover command from the base station by using the secondary carrier.
The handover method according to claim 9, wherein the UE receives a handover command from the base station, comprising: the UE receiving the handover command from the base station by using the primary carrier, where the handover command includes The second indication information is used to indicate a combination manner of the target TTI of the primary carrier and the secondary carrier.
The handover method according to any one of claims 9 to 12, wherein the handover method further comprises: the UE receiving a reconfiguration message from the RNC, the reconfiguration message being used to indicate the auxiliary Configuration parameters of the carrier's TTI;

The UE pre-stores configuration parameters of the TTI of the secondary carrier according to the reconfiguration message.
The handover method according to any one of claims 9 to 12, wherein the handover method further comprises: the UE receiving a reconfiguration message from the RNC, the reconfiguration message being used to indicate the main Combination mode and configuration parameters of the carrier and the TTI of the secondary carrier;

The UE pre-stores configuration parameters of the TTI of the primary carrier and the secondary carrier in the combined manner according to the reconfiguration message.
The handover method of claim 9, wherein the secondary carrier is in a deactivated state, the handover method further comprising:

The UE receives an activation-switching command sent by the base station, where the activation-switching command is used to instruct the UE to activate the secondary carrier, and switch the TTI of the secondary carrier.
The handover method according to any one of claims 9 to 15, wherein the handover command is a high speed shared control channel command HS-SCCH order.
A method for switching a transmission time interval TTI, comprising:

The RNC receives the user equipment power headroom UPH information of the user equipment UE from the base station, where the UPH information includes the UPH of the primary carrier of the UE and/or the UPH of the secondary carrier of the UE;

Determining, by the RNC, whether to switch the TTI of the target carrier in the primary carrier and the secondary carrier based on the UPH information.
The switching method according to claim 17, wherein the switching method further comprises:

The RNC receives the third indication information from the base station, where the third indication information is used to indicate that the UPH included in the UPH information is an UPH for the primary carrier and/or the secondary carrier.
The switching method according to claim 17 or 18, wherein the switching method further comprises:

Sending, by the RNC, a reconfiguration message to the UE, where the reconfiguration message is used to indicate a configuration parameter of a TTI of the secondary carrier, so that the UE pre-stores a TTI of the secondary carrier according to the reconfiguration message. Configuration parameters.
The handover method according to claim 17 or 18, wherein the handover method further comprises: the RNC transmitting a reconfiguration message to the UE, the reconfiguration message being used to indicate the primary carrier and the The combination of the TTI of the secondary carrier and the configuration parameter, so that the UE pre-stores the configuration parameters of the TTI of the primary carrier and the secondary carrier in the combined manner according to the reconfiguration message.
A base station, comprising:

a receiving module, configured to receive user equipment power headroom UPH information from a user equipment UE, where the UPH information includes an UPH of a primary carrier of the UE and/or an UPH of a secondary carrier of the UE;

a sending module, configured to send the UPH information to a radio network controller RNC;

The sending module is further configured to: when the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier based on the UPH information, send a handover command to the UE, where the handover is performed. The command is used to instruct the UE to switch the TTI of the target carrier.
The base station according to claim 21, wherein the target carrier is the secondary carrier, and the sending module is specifically configured to: send, by using the primary carrier, the handover command to the UE, the handover command The first indication information is used to indicate that the handover command is a command to switch the TTI of the secondary carrier.
The base station according to claim 21, wherein the target carrier is the secondary carrier, and the sending module is specifically configured to send the handover command to the UE by using the secondary carrier.
The base station according to claim 21, wherein the sending module is configured to send the handover command to the UE by using the primary carrier, where the handover command includes second indication information, and the second indication The information is used to indicate a combination of the target carrier and the target TTI of the secondary carrier.
The base station according to any one of claims 21 to 24, wherein the sending module is further configured to send third indication information to the RNC, where the third indication information is used to indicate the UPH information. The UPH is the UPH for the primary carrier and/or the secondary carrier.
The base station according to any one of claims 21 to 25, wherein the UPH information includes an UPH of a primary carrier, and the base station further includes:

a first determining module, configured to determine, according to an UPH of the primary carrier, an UPH of the secondary carrier;

The sending module is further configured to add an UPH of the secondary carrier to the UPH information sent to the RNC.
The base station according to claim 21, wherein the UPH information includes an UPH of a primary carrier, the secondary carrier is in a deactivated state, and the sending module is further configured to send an activation-switching command to the UE. The activation-handover command is used to instruct the UE to activate the secondary carrier and switch the TTI of the secondary carrier.
The base station according to any one of claims 21 to 27, wherein the handover command is a high speed shared control channel command HS-SCCH order.
A user equipment (UE), comprising:

a sending module, configured to send a user equipment power headroom UPH information, where the UPH information includes an UPH of a primary carrier of the UE and/or an UPH of a secondary carrier of the UE, where the UPH information is used by the base station Send to the radio network controller RNC;

a receiving module, configured to: when the RNC determines to switch a TTI of the target carrier in the primary carrier and the secondary carrier based on the UPH information, receive a handover command from the base station, where the handover command is used by the RNC Instructing the UE to switch the TTI of the target carrier;

And a switching module, configured to switch a TTI of the target carrier according to the switching command.
The UE according to claim 29, wherein the target carrier is the secondary carrier, and the receiving module is specifically configured to receive the handover command from the base station by using the primary carrier, where the handover command includes The first indication information is used to indicate that the handover command is a command to switch the TTI of the secondary carrier.
The UE according to claim 29, wherein the target carrier is the secondary carrier, and the receiving module is specifically configured to receive the handover command from the base station by using the secondary carrier.
The UE according to claim 29, wherein the receiving module is specifically configured to receive the handover command from the base station by using the primary carrier, where the handover command includes second indication information, the second indication The information is used to indicate a combination manner of the target TTI of the primary carrier and the secondary carrier.
The UE according to any one of claims 29 to 32, wherein the receiving module is specifically configured to: the UE receives a reconfiguration message from the RNC, where the reconfiguration message is used to indicate the auxiliary Configuration parameters of the carrier's TTI;

The UE further includes:

And a storage module, configured to pre-store a configuration parameter of a TTI of the secondary carrier according to the reconfiguration message.
The UE according to any one of claims 29 to 32, wherein the receiving module is further configured to receive a reconfiguration message from the RNC, where the reconfiguration message is used to indicate the primary carrier and the The combination mode and configuration parameters of the TTI of the secondary carrier;

The UE further includes:

And a storage module, configured to pre-store the configuration parameters of the TTI of the primary carrier and the secondary carrier in the combined manner according to the reconfiguration message.
The UE according to claim 29, wherein said secondary carrier is in a deactivated state The receiving module is further configured to receive an activation-switching command sent by the base station, where the activation-switching command is used to instruct the UE to activate the secondary carrier, and switch a TTI of the secondary carrier.
The handover method according to any one of claims 29 to 35, wherein the handover command is a high speed shared control channel command HS-SCCH order.
A radio network controller RNC, comprising:

a receiving module, configured to receive user equipment power headroom UPH information of the user equipment UE, where the UPH information includes an UPH of a primary carrier of the UE and/or an UPH of a secondary carrier of the UE;

And a determining module, configured to determine, according to the UPH information, whether to switch the TTI of the target carrier in the primary carrier and the secondary carrier.
The RNC of claim 37, wherein the receiving module is further configured to:

The third indication information is received from the base station, where the third indication information is used to indicate that the UPH included in the UPH information is an UPH for the primary carrier and/or the secondary carrier.
The RNC according to claim 37 or claim 38, wherein the base station further comprises:

a first sending module, configured to send a reconfiguration message to the UE, where the reconfiguration message is used to indicate a configuration parameter of a TTI of the secondary carrier, so that the UE pre-stores the foregoing according to the reconfiguration message. Configuration parameters of the TTI of the secondary carrier.
The RNC according to claim 37 or claim 38, wherein the base station further comprises:

a second sending module, configured to send a reconfiguration message to the UE, where the reconfiguration message is used to indicate a combination manner and a configuration parameter of a TTI of the primary carrier and the secondary carrier, so that the UE is configured according to the Reconfiguring the message, pre-storing the configuration parameters of the TTI of the primary carrier and the secondary carrier in the combined manner.
A base station, comprising:

a receiver, configured to receive user equipment power headroom UPH information from a user equipment UE, where the UPH information includes an UPH of a primary carrier of the UE and/or an UPH of a secondary carrier of the UE;

a transmitter, configured to send the UPH information to a radio network controller RNC;

The transmitter is further configured to: when the RNC determines to switch the TTI of the target carrier in the primary carrier and the secondary carrier based on the UPH information, send a handover command to the UE, where the handover is performed. The command is used to instruct the UE to switch the TTI of the target carrier.
The base station according to claim 41, wherein the target carrier is the secondary carrier, and the transmitter is specifically configured to: send, by using the primary carrier, the handover command to the UE, the handover command The first indication information is used to indicate the switching command It is a command to switch the TTI of the secondary carrier.
The base station according to claim 41, wherein the target carrier is the secondary carrier, and the transmitter is specifically configured to send the handover command to the UE by using the secondary carrier.
The base station according to claim 41, wherein the transmitter transmits the handover command to the UE by using the primary carrier, the handover command includes second indication information, and the second indication information is used by A combination manner indicating a target TTI of the primary carrier and the secondary carrier.
The base station according to any one of claims 41 to 44, wherein the transmitter is further configured to send third indication information to the RNC, where the third indication information is used to indicate the UPH information. The UPH is the UPH for the primary carrier and/or the secondary carrier.
The base station according to any one of claims 41 to 45, wherein the UPH information includes an UPH of a primary carrier, and the base station further includes:

a processor, configured to determine, according to an UPH of the primary carrier, an UPH of the secondary carrier;

The transmitter is further configured to add an UPH of the secondary carrier to the UPH information sent to the RNC.
The base station according to claim 41, wherein the secondary carrier is in a deactivated state, the transmitter is further configured to send an activation-switching command to the UE, where the activation-switching command is used to indicate the The UE activates the secondary carrier and switches the TTI of the secondary carrier.
The base station according to any one of claims 41 to 47, wherein the handover command is a high speed shared control channel command HS-SCCH order.
A user equipment (UE), comprising:

a transmitter, configured to send user equipment power headroom UPH information, where the UPH information includes an UPH of a primary carrier of the UE and/or an UPH of a secondary carrier of the UE, where the UPH information is used by the base station Send to the radio network controller RNC;

a receiver, configured to receive a handover command from the base station, where the RNC determines to switch a TTI of a target carrier in the primary carrier and the secondary carrier based on the UPH information, where the handover command is used by the RNC. Instructing the UE to switch the TTI of the target carrier;

And a processor, configured to switch a TTI of the target carrier according to the handover command.
The UE according to claim 49, wherein the target carrier is the secondary carrier, and the receiver is specifically configured to receive the handover command from the base station by using the primary carrier, where the handover command includes The first indication information is used to indicate that the handover command is a command to switch the TTI of the secondary carrier.
The UE according to claim 49, wherein the target carrier is the secondary carrier, and the receiver is specifically configured to receive the handover command from the base station by using the secondary carrier.
The UE according to claim 49, wherein the receiver is specifically configured to receive the handover command from the base station by using the primary carrier, where the handover command includes second indication information, the second indication The information is used to indicate a combination manner of the target TTI of the primary carrier and the secondary carrier.
The UE according to any one of claims 49 to 52, wherein the receiver is specifically configured to: the UE receives a reconfiguration message from the RNC, where the reconfiguration message is used to indicate the auxiliary Configuration parameters of the carrier's TTI;

The UE further includes:

And a storage, configured to pre-store a configuration parameter of a TTI of the secondary carrier according to the reconfiguration message.
The UE according to any one of claims 49 to 52, wherein the receiver is further configured to receive a reconfiguration message from the RNC, the reconfiguration message being used to indicate the primary carrier and the The combination mode and configuration parameters of the TTI of the secondary carrier;

The UE further includes:

And a storage, configured to pre-store, in the combined manner, configuration parameters of a TTI of the primary carrier and the secondary carrier according to the reconfiguration message.
The UE according to claim 49, wherein the secondary carrier is in a deactivated state, and the receiver is further configured to receive an activation-switching command sent by the base station, where the activation-switching command is used to indicate The UE activates the secondary carrier and switches the TTI of the secondary carrier.
The handover method according to any one of claims 49 to 55, wherein the handover command is a high speed shared control channel command HS-SCCH order.
A radio network controller RNC, comprising:

a receiver, configured to receive user equipment power headroom UPH information of the user equipment UE, where the UPH information includes an UPH of a primary carrier of the UE and/or an UPH of a secondary carrier of the UE;

And a processor, configured to determine, according to the UPH information, whether to switch the TTI of the target carrier in the primary carrier and the secondary carrier.
The RNC of claim 57, wherein the receiver is further configured to:

The third indication information is received from the base station, where the third indication information is used to indicate that the UPH included in the UPH information is an UPH for the primary carrier and/or the secondary carrier.
The RNC according to claim 57 or 58, wherein the base station further comprises a transmitter, configured to send a reconfiguration message to the UE, where the reconfiguration message is used to indicate a configuration of a TTI of the secondary carrier. a parameter, so that the UE pre-stores a configuration parameter of a TTI of the secondary carrier according to the reconfiguration message.
The RNC according to claim 57 or 58, wherein the base station further comprises a transmitter, configured to send a reconfiguration message to the UE, where the reconfiguration message is used to indicate the primary carrier and the secondary The combination of the TTI of the carrier and the configuration parameter, so that the UE pre-stores the configuration parameters of the TTI of the primary carrier and the secondary carrier in the combined manner according to the reconfiguration message.