The present invention relates to the field of wireless communication technology, and more specifically, to a method and apparatus for measuring a carrier in deactivated state.
In the carrier aggregation technique of Long Term Evolution Advance (Long Term Evolution, LTE-Advance), carrier activation and deactivation mechanisms are widely applied to packet service, File Transfer Protocol (File Transfer Protocol, FTP) and the like, wherein arrival of data packets of those services has burst and amount of those data packets is large. Thus, when UE sends/receives data to/from Base Station through activated carrier, the UE has to monitor Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) for all carriers kept in activated state. However, continuously monitoring all activated carriers leads to high battery power consumption of the UE. In order to reduce UE battery power consumption, UE can activate carriers required to transmit data only upon the arrival of data packets, and only use a few carriers to keep activated when no data arrives or only a small amount of data arrives.
In order to guarantee success ratio for activating carriers required for data transmission, avoid data loss and interruption, it is necessary for the BS to measure and acquire signal quality and interference level of carriers in deactivated state before activating those deactivated carriers. However, highly frequent and highly precise measurement may consume battery power of terminals, which degrades system performance.
A method for measuring a carrier in deactivated state which is capable of improving system performance, is provided in an embodiment of this invention.
On one aspect, a method for measuring a carrier in deactivated state is provided, comprising:
On another aspect, another method for measuring a carrier in deactivated state is provided, comprising:
On another aspect, an apparatus for measuring a carrier in deactivated state is provided, comprising:
On another aspect, a base station is provided, comprising:
In embodiments of this invention, a user terminal UE receives a configuration mode that does not take effect immediately; if a deactivation control signaling for a carrier is received by the UE or if a carrier timer of the UE expires, the carrier is switched from activated state to deactivated state, and the UE measures the carrier in deactivated state; or if an activation control signaling for a carrier in deactivated state that is being measured is received by the UE, then the UE terminates measurement of the carrier in deactivated state. Through enhancing controllability of deactivated carrier measurement, the UE can reduce terminal battery power consumption and improve system performance.
For a more explicit description of the technical solutions of embodiments of this invention, a brief introduction of accompanying drawings to be used in the description of these embodiments will be given below. Obviously, accompanying drawings described below are merely some embodiments of this invention, for those skilled in the art, other accompanying drawings can be derived from these ones without any creative efforts.
a
1 is a schematic diagram of a carrier configuration of an embodiment of this invention;
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2 is a schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
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3 is a schematic diagram of another carrier configuration of an embodiment of this invention;
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4 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
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5 is a schematic diagram of another carrier configuration of an embodiment of this invention;
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6 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
a
7 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
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1 is a schematic diagram of a carrier configuration of an embodiment of this invention;
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2 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
a
3 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
a
4 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
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5 is a schematic diagram of a carrier configuration of an embodiment of this invention;
a
6 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
a
7 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
a
8 is another schematic diagram of measuring a carrier in deactivated state of an embodiment of this invention;
a is a schematic diagram of a flow of a method for measuring a carrier in deactivated state according to another embodiment of this invention;
a is another schematic structure diagram of an apparatus for measuring a carrier in deactivated state of this invention;
For making objects, technical solutions and advantages of embodiments of this invention more clear, description will be given below this invention in connection with accompanying drawings. Obviously, embodiments described herein are merely some embodiments of this invention, but not all of them. Based on those embodiments of this invention, other embodiments can occur to those skilled in the art without any creative efforts, all of which fall within the scope of this invention.
101. A user terminal UE receives a configuration mode that does not take effect immediately;
102
a. if a deactivation control signaling for a carrier is received by the UE or if a carrier timer of the UE expires, the carrier is switched from activated state to deactivated state, and the UE measures the carrier in deactivated state; or
102
b. if an activation control signaling for a carrier in deactivated state that is being measured is received by the UE, then the UE terminates the measurement of the carrier in deactivated state.
In the embodiment of this invention, a user terminal UE receives a configuration mode that does not take effect immediately; if a deactivation control signaling for a carrier is received by the UE or if a carrier timer of the UE expires, then the carrier is switched from activated state to deactivated state, and the UE measures the carrier in deactivated state; or if an activation control signaling for a carrier in deactivated state that is being measured is received by the UE, then the UE terminates measurement of the carrier in deactivated state. Through controllable deactivated carrier measurement, the UE can reduce its terminal battery power consumption and improve system performance.
201. UE receives an Radio Resource Control (Radio Resource Control, RRC) connection reconfiguration message sent from BS, wherein the configuration message carries a configuration mode that does not take effect immediately;
202. The UE stores the configuration mode that does not take effect immediately;
203. The UE sends to the BS an RRC connection reconfiguration completion message;
204. The UE receives a deactivation control signaling for a carrier sent from the BS, and switches the carrier from activated state to deactivated state;
At step 204, the UE can confirm to switch the carrier to deactivated state from activated state by timeout of an internal carrier timer.
The control signaling can be Medium Access Control (Medium Access Control, MAC) signaling or a physical layer control signaling.
205. The UE initiates a time slot Gap to measure the carrier in deactivated state;
206. The UE receives an activation control signaling sent from the BS for the carrier in deactivated state that is being measured;
207. The UE closes Gap and terminates measurement of the carrier in deactivated state.
After step 207, the UE initiates a gap again to perform deactivated carrier measurement only when a deactivation control signaling for the carrier in activated state is once again received by the UE from the BS.
In the embodiment of this invention, UE receives a configuration mode that does not take effect immediately, switches a carrier to deactivated state from activated state, initiates a gap to measure the carrier in deactivated state; if an activation control signaling for the carrier in deactivated state that is being measured is received by the UE, then the UE terminates measurement of the carrier in deactivated state. Through controllable deactivated carrier measurement of the UE, terminal battery power consumption can be reduced and system performance can be improved.
401. The UE sends Radio Frequency (Radio Frequency, RF) capability information of the UE to a base station.
When the base station configures a new carrier for the UE, the UE sends RF capability in the band of the carrier only when there are at least two RF channels in the band.
Wherein, the UE sends its RF capability information in the same band to the base station, comprising:
sending, by the UE, its RF capability information in the same band to the base station. For example, the capability information can be UE-EUTRA-Capability, wherein the RF capability information can comprise a maximum number of RF channels that can be supported in the band and receiving bandwidth supported by each RF, wherein the receiving bandwidth can be a maximum receiving bandwidth.
If the receiving bandwidth of the RFs in the same band are same, then the RF capability information in the same band can only comprise number of RFs supported in the band.
The RF capability information in the band can further comprise receiving bandwidth supported in the band, the receiving bandwidth is a bandwidth in which the UE can receive data and/or measure bandwidth simultaneously when all RF channels are enabled, the receiving bandwidth and/or measurement bandwidth can be a maximum bandwidth.
402. The UE receives the RRC connection configuration message sent from the base station, wherein the configuration message carries a configuration mode that does not take effect immediately.
403. The UE stores the configuration mode.
404. A RRC connection reconfiguration completion message is sent to the base station.
405. The UE receives a deactivation control signaling for a carrier sent from the base station, and switches the carrier from activated state to deactivated state.
The control signaling may be Medium Access Control (Medium Access Control, MAC) signaling or a physical layer control signaling.
406. The UE measures the carrier in deactivated state through initiating a Gap, shifting RF central frequency, or enabling an idle RF channel.
The UE measuring the carrier in deactivated state through initiating a Gap, shifting the RF central frequency, or enabling an idle RF channel can be pre-configured. The pre-configuration can be configuration made by the base station based on the RF capability information reported by the UE, and then the BS can notify configuration information to the UE. The pre-configuration can comprise:
An RF channel can cover multiple bands. When activated carriers and deactivated carriers are within the same band, particularly, when activated carriers and deactivated carriers are continuous carriers, the UE shifts a RF central frequency, that is, converts RF channel corresponding to activated carriers to a broader bandwidth of the deactivated carriers such that the bandwidth can ensure data reception of activated carriers and measurement of deactivated carriers to be performed simultaneously.
For example, as shown in
As shown in
As shown in
407. The UE receives from the BS an activation control signaling for a carrier in deactivated state that is being measured.
408. The UE terminates measurement of the carrier in deactivated state.
At step 406, if the UE has initiated a Gap to measure the carrier in deactivated state, then the Gap has to be closed at first to terminate the measurement of the carrier in deactivated state; if the UE has shifted a central frequency to measure the carrier in deactivated state, then measurement of the carrier in deactivated state can be terminated directly; if the UE has enabled an idle RF channel to measure the carrier in deactivated state, then the UE must disable the idle RF channel and then terminate the measurement of the carrier in deactivated state.
With the embodiment of
In the embodiment of this invention, the UE receives a configuration mode that does not take effect immediately; when a deactivation control signaling for a carrier is received by the UE or when a carrier timer of the UE expires, the UE initiates a gap or shifts a central frequency or enable an idle RF channel to measure a carrier in deactivated state; if an activation control signaling for a carrier in deactivated state that is being measured is received by the UE, the UE terminates measurement of the carrier in deactivated state, so that through deactivated carrier measurement control, the UE can reduce terminal battery power consumption and improve system performance.
501. The UE sends RF capability information of the UE to a base station,
The RF capability in the band may further comprise receiving bandwidth supported in the band, the receiving bandwidth is a bandwidth in which the UE can receive data and/or measure bandwidth simultaneously when all RF channels are enabled. The receiving bandwidth and/or measurement bandwidth may be a maximum bandwidth.
If the RF capability in the same band supports the same receiving bandwidth, then the RF capability information in the same band can only comprise the number of RF channels supported in the band.
The RF capability in the band may further comprise receiving bandwidth supported in the band, that is, the receiving bandwidth is a bandwidth in which the UE can receive data and/or measure bandwidth simultaneously when all RF channels are enabled. The receiving bandwidth and/or measurement bandwidth may be a maximum bandwidth.
502. The UE receives an RRC connection configuration message sent from the base station, wherein a configuration message that does not take effect immediately is carried on the configuration message.
503. The UE stores the configuration mode that does not take effect immediately.
504. Sends an RRC connection reconfiguration completion message to the base station.
505. The UE receives a deactivation control signaling for a carrier sent from the base station, and switches the carrier from activated state to deactivated state.
Alternatively, when a carrier timer of the UE expires, the carrier is switched from activated state to deactivated state.
The control signaling can be Medium Access Control (Medium Access Control, MAC) signaling or a physical layer control signaling.
506. The UE selects an RF channel corresponding to one or more activated carriers to initiate a gap thereon, or shifts an RF central frequency, or selects an idle RF channel corresponding to one or more activated carriers to measure one or more deactivated carriers as selected objects.
The UE receives a deactivation control signaling for carriers, switches those carriers from activated state to deactivated state, and selects a RF channel corresponding to the one or more activated carriers to measure the carriers in deactivated state by measuring according to the RF capability of the UE, wherein during one measurement period, a non-repeated measurement is performed on at least one carrier in deactivated state on a RF channel corresponding to at least one carrier in activated state.
The measurement of deactivated carriers by the UE can be pre-configured by the BS and the UE. For example, as shown in
As shown in
507. The UE receives an activation control signaling sent from the BS for a carrier in deactivated state that is being measured.
508. The UE terminates the measurement of the carrier in deactivated state.
At step 506, if the UE has initiated a gap to measure the carrier in deactivated state, the gap has to be closed at first, and then the measurement of the carrier in deactivated state can be terminated; if the UE has shifted a central frequency to measure the carrier in deactivated state, the measurement of the carrier in deactivated state can be terminated directly; if the UE has enabled an idle RF channel to measure the carrier in deactivated state, the UE must disable the idle RF channel and then terminate the measurement of the carrier in deactivated state.
In the embodiment of this invention, the UE receives a configuration mode that does not take effect immediately; when a deactivation control signaling for a carrier is received by the UE or when a carrier timer of the UE expires, the UE selects an RF channel corresponding to one or more carriers in activated state to initiate a gap, or shifts an RF central frequency, or selects an idle RF channel corresponding to one or more carriers in activated state, to measure one or more deactivated carriers as selected measuring objects. When an activation control signaling for a carrier in deactivated state that is being measured is received by the UE, the UE terminates the measurement of the carrier in deactivated state, so that through controllable deactivated carrier measurement, the UE can reduce terminal battery power consumption and improve system performance.
601. The UE sends RF capability information of the UE to a base station.
Wherein, at step 601, the UE sends to BS RF capability in a band of a configured carrier only if there are at least two RF channels in the band.
The UE sends its RF capability in the same band to the base station, comprising:
The RF capability in the band may further comprise receiving bandwidth supported in the band, the receiving bandwidth is a bandwidth in which the UE can receive data and/or measure bandwidth simultaneously when all RF channels are enabled; the receiving bandwidth and/or measurement bandwidth can be a maximum bandwidth.
If the RF capability in the same band supports the same receiving bandwidth, the RF capability information in the same band can only comprise the number of RF channels supported in the band.
The RF capability in the band may further comprise receiving bandwidth supported in the band, the receiving bandwidth is a bandwidth in which the UE can receive data and/or measure bandwidth simultaneously when all RF channels are enabled; the receiving bandwidth and/or measurement bandwidth can be a maximum bandwidth.
For different frequency bands, the UE must use several RF channels. However, for multiple frequencies in the same band, for example, the 3.5G frequency band, a total 5 carriers are supported in 100M; if the UE has a main carrier and auxiliary carriers in one band, the UE may have multiple RF channels, and a deactivated auxiliary carrier can be measured without a gap.
602. The BS sends to UE a configuration message with a configuration mode that does not take effect immediately, wherein the configuration message may carry a set of measurement configuration information.
As shown in Table 2, measurement configuration information set 1 comprises:
As shown in
For example, the measurement configuration information set 2 comprises:
603. The UE stores the configuration message carrying configuration mode that does not take effect immediately.
604. The UE receives a deactivation control signaling for a carrier sent from the base station.
605. The UE receives a deactivation control signaling for at least one carrier; switches the at least one carrier from activated state to deactivated state; selects measurement configuration information corresponding to the UE configuration information from the measurement configuration information set to measure the carrier in deactivated state.
The control signaling can be Medium Access Control (Medium Access Control,MAC) signaling or a physical layer control signaling.
606. The UE receives an activation control signaling for a carrier in deactivated state that is being measured from the BS.
607. The UE terminates measurement of the carrier in deactivated state.
At step 605, if the UE has initiated a gap to measure the carrier in deactivated state, the gap has to be closed at first, and then the measurement of the carrier in deactivated state can be terminated; if the UE has shifted a central frequency to measure the carrier in deactivated state, the measurement of the carrier in deactivated state can be terminated directly; if the UE has initiated an idle RF channel to measure the carrier in deactivated state, the UE needs to close the idle RF channel and then terminate the measurement of the carrier in deactivated state.
701. A base station sends a configuration mode that does not take effect immediately;
701
a. The BS sends a deactivation control signaling to UE to cause the UE to switch a carrier from activated state to deactivated state when receiving the carrier deactivation control signaling, and measure the carrier in deactivated state; or
702
b. The BS sends an activation control signaling for a carrier in deactivated state that is being measured to the UE, to cause the UE to terminate the measurement of the carrier in deactivated state.
In the embodiment of this invention, a BS sends a configuration mode that does not take effect immediately to a UE, to cause the UE to receive a deactivation control signaling for a carrier or a timeout notification of a carrier timer of the UE, switch the carrier from activated state to deactivated state, and measure the carrier in deactivated state; or to cause the UE to terminate measurement of the carrier in deactivated state if an activation control signaling for a carrier in deactivated state that is being measured is received by the UE. Through controllable deactivated carrier measurement, the UE can reduce terminal battery power consumption and improve system performance.
Furthermore, the process module is used to, according to the RF capability, select an RF channel corresponding to one or more carriers in activated state to measure the carriers in deactivated state by measuring manner. The process module further comprises a process unit 8031 for performing non-repeated measurement on at least one carrier in deactivated state on an RF channel corresponding to at least one carrier in activated state during one measurement period.
Furthermore, the apparatus further comprises:
In the embodiment of this invention, a user terminal UE receives a configuration mode that does not take effect immediately, if a deactivation control signaling for a carrier or a timeout notification of a carrier timer of the UE is received by the UE, the carrier is switched from activated state to deactivated state, and the UE measures the carrier in deactivated state; or if an activation control signaling for a carrier in deactivated state that is being measured is received by the UE, the UE terminates measurement of the carrier in deactivated state. Through controllable deactivated carrier measurement, the UE can reduce terminal battery power consumption and improve system performance.
In the embodiment of this invention, the BS sends a configuration mode that does not take effect immediately to a user terminal UE; the BS sends a deactivation control signaling for a carrier to the UE, to cause the UE to switch the carrier from activated state to deactivated state when receiving the deactivation control signaling for the carrier, and measure the carrier in deactivated state; or the BS sends an activation control signaling for a carrier in deactivated state that is being measured to the UE, to cause the UE to switch the carrier from activated state to deactivated state when receiving the deactivation control signaling for the carrier, and measure the carrier in deactivated state. Through controlling deactivated carrier measurement, the UE can reduce terminal battery power consumption and improve system performance.
The apparatus of the embodiment of this invention is used to perform steps of methods of above embodiments.
Embodiments of this invention have been described with three or four carriers as an example. However, embodiments of this invention are not limited to the carrier number specified in above embodiments.
Through the description of various embodiments above, those skilled in the art can clearly understand that the invention can be implemented in a manner of software and an essential general-purpose hardware platform. Of course, it can be implemented by hardware, but the former is preferred in most cases. Based upon such understanding, the technical solutions of the invention or a part thereof contributing to the prior art can essentially be embodied in the form of a software product, which can be stored in a storage medium, which includes several instructions to cause a computer device (which may be a personal computer, a server, a network device, etc.) to perform the methods according to the respective embodiments of the invention.
Although this invention has been illustrated and described with reference to some preferred embodiments of this invention, those skilled in the art may understand that various modifications in the form and details can be made without departing from the spirit and scope of this invention.
Number | Date | Country | Kind |
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201010169441.6 | Apr 2010 | CN | national |
This application is a continuation of U.S. patent application Ser. No. 13/664,174, filed Oct. 30, 2012, which is a continuation of International Patent Application No. PCT/CN2011/073593, filed May 3, 2011. The International Patent Application claims priority to Chinese Patent Application No. 201010169441.6, filed Apr. 30, 2010. The afore-mentioned patent applications are hereby incorporated by reference in their entireties.
Number | Date | Country | |
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Parent | 13664174 | Oct 2012 | US |
Child | 14695889 | US | |
Parent | PCT/CN2011/073593 | May 2011 | US |
Child | 13664174 | US |