WO2012022199A1

WO2012022199A1 - Method and system for carrier measurement in multi-carrier system

Info

Publication number: WO2012022199A1
Application number: PCT/CN2011/076329
Authority: WO
Inventors: 黄亚达
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-08-17
Filing date: 2011-06-24
Publication date: 2012-02-23
Also published as: CN102378210A

Abstract

A method and system for carrier measurement in multi-carrier system are disclosed by the present invention. The method includes that: at least one measurement requirements are set for deactivate carriers; according to different states of the deactivate carriers, a User Equipment (UE) adopts corresponding measurement requirements. The system includes a setting unit (30) and a measurement unit (31), wherein the setting unit (30) is used for setting at least one measurement requirements for deactivate carriers, and the measurement unit (31), configured in the UE, is used for adopting corresponding measurement requirements according to different states of the deactivate carriers. The present invention gives consideration to both rapid activations of the deactivate carriers and power savings of the UE.

Description

Carrier measurement method and system in multi-carrier system

The present invention relates to carrier measurement techniques, and more particularly to a carrier measurement method and system in a multi-carrier system. Background technique

In the Long Term Evolution (LTE) system, the maximum transmission bandwidth supported by the system is 20MHz. In order to provide higher data rates to mobile users, the Long Term Evolution (LTE-A) system proposes Carrier Aggregation (CA), which is designed for user equipments (UEs with corresponding capabilities). User Equipment ) Provides greater bandwidth and increases the peak rate of user equipment. The CA aggregates two or more component carriers (CCs) to support transmission bandwidths greater than 20 ΜΗζ and no more than 100 MHz. The LTE-A system using carrier aggregation technology is a multi-carrier system.

FIG. 1 is a schematic diagram of carrier aggregation according to the related art. As shown in FIG. 1, each component carrier performing carrier aggregation may be continuous or discontinuous in the frequency domain. To support carrier aggregation and enable the UE to work on multiple carriers at the same time, the radio frequency structure of the UE needs to meet the corresponding requirements. For example, in the frequency division duplex mode (FDD), the UE supports downlink carrier aggregation. If two or more discontinuous component carriers are received, the UE needs to have more than two radio receivers (Receiver) to simultaneously Receiving data on discontinuous component carriers; if receiving more than two consecutive component carriers in the frequency domain, the UE needs to have a radio receiving device with a maximum bandwidth exceeding 20 MHz, compared to a radio receiving device with a maximum bandwidth of 20 MHz in a single carrier system. Data is simultaneously received on a plurality of consecutive component carriers, or if the UE has multiple radio receiving devices, the UE can use the plurality of radio receiving devices to simultaneously receive data on the plurality of consecutive component carriers. Similarly, for the FDD, the UE supports uplink carrier aggregation. If the UE simultaneously transmits data on two or more discontinuous component carriers, the UE needs to have more than two radio transmitting devices (Transmitter); if the UE is in more than two consecutive component carriers at the same time; To transmit data, the UE needs to have a radio transmitting device with a maximum bandwidth exceeding 20 MHz or more than two radio transmitting devices. The principle of UE support carrier aggregation under the time division duplex mode (TDD, Time Division Duplex) is also the same. When the above Receiver and Transmitter are implemented on the UE, they may be attributed to the same device, that is, a unified radio transceiver device, or a radio frequency unit.

After the carrier aggregation technology is introduced, the base station (eNB, evolved NodeB) can configure up to 5 cells for the UE. After the UE establishes a service on a cell, the base station may add a new UE to the UE by using RRC (Radio Resource Control) signaling due to the increase of the UE service traffic or the radio resource management (RRM) requirement of the base station. The configuration of the cell includes, in particular, configuration information related to the uplink and downlink carriers of the newly added cell. Conversely, because the UE traffic is reduced, or the cell signal quality currently configured for the UE is degraded, or the RRM management of the base station is performed, the base station may delete the cell that has been configured to the UE by using RRC signaling, specifically, including the deleted cell. Configuration information of the uplink and downlink carriers. The above process of adding and deleting cell configurations can occur at the same time.

In the process of adding or deleting a cell configuration, the base station configures a primary serving cell (Pcell) for the UE through an explicit configuration or a protocol, and the downlink carrier working by the Pcell is called a downlink primary carrier (DL). PCC, Downlink Primary Component Carrier), the uplink carrier working by the Pcell is called the uplink primary carrier (UL PCC), and the other cells other than the Pcell configured by the UE are called the secondary serving cell (Scell, Second serving The downlink carrier working by the Scell is called the downlink secondary carrier (DL SCC), and the uplink carrier working by the Scell is called the uplink secondary carrier (UL SCC).

The foregoing is configured to configure multiple cells for the UE by using RRC signaling, that is, the UE works on multiple carriers, The UE needs to use a radio transceiver with a bandwidth exceeding 20 MHz or use multiple radio transceivers, which will greatly increase the battery power consumption of the UE. Therefore, considering the bursty characteristics of the service, although the UE may use up to 5 carriers at most, in the burst gap, the actual traffic of the UE is rarely or close to zero. At this time, if the UE continues to be in multiple Receiving/transmitting data on a carrier will result in higher power overhead. Therefore, in order to extend the working time of the UE, turn off the radio transceiver device that is not required to be turned on, and reduce unnecessary battery consumption. On the basis of the above-mentioned increase/decrease cell configuration (carrier configuration), a carrier activation/deactivation mechanism can be introduced. The downlink carrier and the uplink carrier in one cell can be independently activated/deactivated. The base station activates/deactivates the secondary carrier through an explicit media access control (MAC, Medium Access Control) command notification or through an agreed implicit rule. In order to ensure the continuity of the communication, the primary carrier is activated once configured, that is, the activation/deactivation mechanism is only performed for the secondary carrier.

The UE performs data reception only on the activated downlink carrier, for example, only on the Physical Downlink Control Channel (PDCCH). On the deactivated downlink carrier, the UE does not monitor the PDCCH channel, and does not receive physical downlink sharing. Data on the channel (PDSCH, Physical Downlink Shared Channel) to save power.

The UE only sends data on the activated uplink carrier. On the deactivated uplink carrier, the UE stops transmitting uplink data, including stopping the transmission of the uplink reference signal (SRS, Sounding Reference Symbols), and stopping the physical uplink control channel (PUCCH, Physical Uplink). The control channel transmits data, and stops transmitting data on the physical uplink shared channel (PUSCH, Physical Uplink Shared Channel).

In the LTE system, in order to balance power saving and measurement requirements, the frequency within the system is divided into two measurement requirements, namely, the same frequency measurement requirement and the inter-frequency measurement requirement. The measurement requirements include: the identification time of the cell, the measurement time of the cell, the measurement accuracy, and the like. In the LTE system, the measurement is mainly used to support the handover decision. Since the frequency of the intra-frequency handover is more frequent than the inter-frequency handover, the inter-frequency measurement requires the UE to adjust the radio frequency unit, and the measurement is only required at the service frequency point relative to the same-frequency measurement. More troublesome, so the measurement requirements of the same frequency are higher than the requirements of the inter-frequency measurement. When the frequency measurement is performed, the cell identification time is 800 ms, and the measurement period is 200 ms. When the inter-frequency measurement is performed, if the inter-frequency frequency is configured, and the configured measurement time slot is mode 0 (period 40), Then the basic cell identification time is 3840 ms and the measurement period is 480 ms. In addition, in the case of DRX, considering the power saving requirements, the same frequency and inter-frequency measurement requirements are further relaxed with the DRX cycle.

According to the existing conclusions, the UE of the LTE-A system may have three carrier configurations in the connected state, namely configuring and activating the carrier, configuring and deactivating the carrier, and not configuring the carrier. For the active carrier, the same frequency measurement requirement as the LTE system is used, and the inter-frequency measurement requirement is used for the unconfigured carrier. For the configuration and deactivation of the carrier, the measurement requirements are still inconclusive. Since the measurement of the deactivated carrier is more to serve the carrier management part, the deactivated carrier can be activated quickly according to the change of the service. Therefore, if the measurement demand is relaxed, such as measuring according to the inter-frequency measurement requirements, the reflection of the de-energized carrier radio quality change will be slowed down, and de-activating the carrier and activating the carrier using the same measurement requirement will result in the UE needing to activate the carrier. Measuring the deactivated carrier is bound to consume more power. Summary of the invention

In view of this, the main object of the present invention is to provide a carrier measurement method and system in a multi-carrier system, which performs measurement when matching a deactivated carrier according to its state and suitable measurement requirements, thereby satisfying the use of the deactivated carrier. The power saving of the UE is implemented under the premise of the requirement.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A carrier measurement method in a multi-carrier system, which sets more than one measurement requirement for deactivating a carrier; the method further includes:

The user equipment UE applies different measurement requirements according to different states in which the carrier is deactivated. Preferably, the different states in which the deactivated carriers are located are different according to signal quality, according to different states of the wireless environment. Preferably, the method further includes:

Presetting a correspondence between a state of the deactivated carrier and a measurement requirement;

Or, the network side notifies the UE of the correspondence between the set state of the deactivated carrier and the measurement request;

The UE applies different measurement requirements according to different states according to the deactivated carrier:

The UE 4 determines the state of the deactivated carrier according to the signal quality information of the deactivated carrier, determines the measurement requirement of the deactivated carrier, and measures the deactivated carrier according to the determined measurement requirement.

Preferably, the method further includes:

Setting a measurement amount for detecting a signal quality, and a value corresponding to a measurement amount of a poor signal quality and a good value;

The correspondence between the state of setting the deactivation carrier and the measurement requirement is as follows:

The value of the measured quantity of the deactivated carrier signal quality corresponds to the measurement requirement of the deactivated carrier measurement by the UE when the signal quality is good or the signal quality is poor;

The value of the measurement amount of the deactivated carrier signal quality corresponds to the measurement requirement of the deactivated carrier measurement when the signal quality is better than the signal quality is poor.

Preferably, the method further includes:

The value of the measured quantity of the deactivated carrier signal quality corresponds to the measurement requirement of the UE for deactivating the carrier measurement when the signal quality is good; the value of the measured quantity of the deactivated carrier signal quality corresponds to when the signal quality is poor, The UE requires 2 measurements for deactivation of the carrier measurement.

Preferably, the measured quantity is an absolute measured quantity or a relative measured quantity; the measured quantity is received The reference signal received power (RSRP, Reference Signal Received Power) or the quality of the reference signal received by the UE (RSRQ, Reference Signal Received Quality).

Preferably, the conditions for setting a good signal quality or a poor signal quality are:

The measured amount of the signal meets a predefined threshold condition or, alternatively, the set measurement event is triggered. Preferably, the method further includes:

The measurement quantity for detecting the signal quality is measured, and after the measurement result is obtained, the filtering is performed, and the filtered result is used as the final measurement result of the measurement quantity.

Preferably, the measurement requirement 1 of the deactivation carrier measurement is specifically: the measurement requirement of the activated carrier is consistent with the measurement requirement of the inter-frequency cell; or the measurement requirement of the deactivated carrier and the discontinuous reception of the activated carrier configuration (DRX, Discontinuous Reception) The measurement requirements are consistent.

Preferably, the measurement requirement of the deactivation carrier measurement is 2, specifically: the measurement requirement of the deactivated carrier is consistent with the measurement requirement of the same frequency cell; or the measurement requirement of the deactivated carrier is consistent with the measurement requirement of the DRX for activating the carrier configuration.

Preferably, the measuring requirement comprises at least one of the following:

UE's measurement capability requirements, frequency measurement number and time requirements, number of cell detections and time requirements, number of cell measurements and time requirements.

A carrier measurement system in a multi-carrier system, comprising: a setting unit and a measuring unit; wherein, the setting unit is configured to set more than one measurement requirement for the deactivated carrier;

The measuring unit is disposed in the UE, and is configured to apply different measurement requirements according to different states in which the carrier is deactivated.

Preferably, the different states in which the deactivated carriers are located are different according to the quality of the wireless environment, and the states are distinguished according to the signal quality.

Preferably, the setting unit further presets a correspondence between a state of the deactivated carrier and a measurement requirement;

The measuring unit further determines the de-excitation according to signal quality information of the deactivated carrier The state of the live carrier is determined, and then the measurement requirement of the deactivated carrier is determined, and the deactivated carrier is measured according to the determined measurement requirement.

Preferably, the system further includes a notification unit, configured on the network side, configured to notify the UE of the correspondence between the set state of the deactivated carrier and the measurement request;

The measuring unit further determines a state of the deactivated carrier according to signal quality information of the deactivated carrier, and further determines a measurement requirement of the deactivated carrier, and performs the deactivated carrier according to the determined measurement request. measuring.

Preferably, the setting unit further sets a measurement amount for detecting a signal quality, and a value corresponding to a measurement quantity that is poor in signal quality and better;

The corresponding relationship between the state of the deactivated carrier and the measurement requirement is specifically: the value of the measured quantity of the deactivated carrier signal quality corresponds to the measurement of the deactivated carrier measurement when the signal quality is good or the signal quality is poor. Requirement 1 ;

The value of the measurement quantity of the deactivated carrier signal quality corresponds to the measurement requirement of the deactivated carrier measurement by the UE when the signal quality is better than the signal quality is poor;

Or, the value of the measured quantity of the deactivated carrier signal quality corresponds to the measurement requirement of the UE for deactivating the carrier measurement when the signal quality is good; the value of the measured quantity of the deactivated carrier signal quality corresponds to the worse signal quality , setting the measurement requirement of the UE for deactivating carrier measurement 2 .

Preferably, the measurement requirement of the deactivation carrier measurement is specifically as follows: The measurement requirement of the activated carrier is consistent with the measurement requirement of the inter-frequency cell; or the measurement requirement of the deactivated carrier is consistent with the measurement requirement of the DRX for activating the carrier configuration.

Preferably, the measuring requirement comprises at least one of the following:

UE's measurement capability requirements, frequency measurement number and time requirements, number of cell detections and time Requirements, cell measurement number and time requirements.

In the present invention, the measurement requirement for the deactivated carrier is first set and configured in the UE, or broadcasted to the UE by the network side or sent to the UE through dedicated signaling, and each UE deactivates the carrier according to the set measurement requirement. The measurement is performed, and the UE dynamically adjusts the measurement requirement of the deactivated carrier according to the signal quality change of the deactivated carrier, thereby achieving the effect of both fast activation and power saving of the deactivated carrier. DRAWINGS

1 is a schematic diagram of carrier aggregation according to the related art;

Figure 2 is a schematic diagram of the dynamic adjustment measurement requirements according to the signal quality change;

Figure 2a is another schematic diagram of dynamically adjusting measurement requirements based on signal quality changes;

FIG. 3 is a schematic structural diagram of a carrier measurement system in a multi-carrier system according to the present invention. detailed description

The basic idea of the invention is that there are multiple measurement requirements for the deactivated carrier, depending on the different states of the deactivated carrier, applying different measurement requirements. The corresponding relationship between the measurement status determination and the measurement requirement may be configured in the UE by using a predefined correspondence, or broadcasted to the UE by the network side or sent to the UE through dedicated signaling, and each UE goes to the set measurement request. The carrier is activated for measurement, so that the UE can dynamically adjust the measurement requirements for the deactivated carrier according to the state change of the deactivated carrier.

The present invention will be further described in detail below with reference to the accompanying drawings.

Deactivating the state of the carrier can deactivate the radio state of the carrier, deactivate the carrier's transmission state, and deactivate the carrier's priority state.

The radio state of the deactivated carrier is determined by the signal quality of the deactivated carrier. The transmission state of the deactivated carrier or the priority state of the deactivated carrier is similar to the wireless state, only The judgment condition is different. For example, the transmission status may be obtained according to historical transmission statistics of the carrier, or a priority status set according to information indicated by the eNB.

First, the correspondence between the measurement requirement of the deactivated carrier and the condition that the signal quality needs to be met is set. When the signal quality of the deactivated carrier satisfies the condition, the UE measures the deactivated carrier according to the measurement requirement.

Specifically, the correspondence between the radio status and the measurement requirement is that when the deactivated carrier signal quality satisfies the good signal quality or the poor condition, the UE measures the deactivated carrier with a lower measurement requirement (measurement requirement 1). The signal quality is better or worse, and the corresponding signal quality meets the condition. The lower measurement requirement is relative to the higher measurement requirement, and the specific measurement is to be described in detail later, such as the LTE system. The inter-frequency measurement requirement is lower than the same-frequency measurement requirement, so the above-mentioned lower measurement requirement may be an inter-frequency measurement requirement in the LTE system, that is, the measurement requirement of the deactivated carrier is consistent with the inter-frequency cell measurement requirement; or The measurement requirements for DRX to activate the carrier configuration are consistent.

When the deactivated carrier signal quality cannot satisfy the good signal quality or the poor condition, the UE measures the deactivated carrier with a higher measurement requirement (measurement requirement 2). The higher measurement requirement may be a relatively low inter-frequency measurement requirement, as the frequency measurement requirement, that is, the measurement requirement of the deactivated carrier is consistent with the measurement requirement of the same-frequency cell or other activated serving cell; or Consistent with the measurement requirements of the DRX that activates the carrier configuration, the measurement requirements for the DRX configuration here are higher than the DRX configuration for the lower measurement requirements described above.

Specifically, the corresponding relationship may also be that when the deactivated carrier signal quality satisfies the signal quality, the UE measures the deactivated carrier with a lower measurement requirement (measurement requirement 1). When the de-energized carrier satisfies the condition of poor signal quality, the UE measures the deactivated carrier with a higher measurement requirement (measurement requirement 2).

The foregoing signal quality condition may be specifically a threshold condition of the measurement quantity, where the measurement condition may be the power of the received reference signal in LTE (Reference Signal Received) Power, referred to as RSRP, in dBm) or the quality of the reference signal received by the UE (Reference Signal Received Quality, referred to as RSRQ, in dB). The threshold condition may be that the above measured quantity is higher or lower than a specific threshold, or higher than and lower than a specific threshold. The threshold may be an absolute threshold, such as the deactivation carrier RSRP is higher than N dBm, the deactivation carrier RSRQ is lower than M dB, or the deactivation carrier RSRP is higher than A dBm and lower than B dBm; wherein, A, B, Both M and N are real numbers. The threshold value may also be a relative threshold, where the relative threshold may be measured relative to a specified cell, such as relative to a serving cell, where the serving cell may be in carrier aggregation. The primary cell, such as the deactivated carrier RSRP, is higher than the primary cell RSRQ K (real) dB. The threshold condition may be that the eNB notifies the UE through dedicated or public signaling, or may be specified by the UE itself, such as a threshold that can be flexibly adjusted according to its own capabilities or power saving requirements, or a threshold predefined by the protocol. In order to prevent the signal quality condition from being triggered by the signal fluctuation, the above signal quality may be a filtered result, for example, the measured value is subjected to conditional judgment after L3 filtering by LTE.

The measurement requirements include the measurement capability requirements of the UE, the number of frequency measurements and time requirements, the number of cell detections and time requirements, the number of cell measurements, and the time requirement. The more the number of measurements, the shorter the measurement time means the higher the measurement requirements. The measurement time is taken as an example. In the LTE system, the measurement period of the intra-frequency cell is 200 ms; the measurement period of the inter-frequency cell and the measurement GAP are configured and the frequency to be measured (including all the inter-frequency measurement using GAP) The frequency is related to the number of different system frequencies. When using gap mode 0 (GAP pattemO ), the measurement period is 480x Nfreq. When using gap mode 1 (GAP patteml ), the measurement period is 240 <Nfreq, where Nfreq is the frequency. The number of measurements is also related to the DRX cycle. When the DRX cycle is less than 40ms, the same frequency measurement period is the same as the unconfigured DRX same frequency measurement period, which is 200ms. When it is greater than 40ms, the same frequency measurement period is 5s. The frequency measurement period is related to the GAP pattern. When the DRX period is less than 160ms, the measurement period and the period are not The DRX is configured with the same frequency measurement period. When the DRX cycle is 256ms, the measurement period is 5.12x Nfreq, and when the DRX cycle is 320ms, the measurement period is 6.4 <Nfreq. The present invention does not limit the specific measurement requirement parameters. In the following description, the existing defined measurement requirements are taken as an example, but the limitation is not limited to the above-mentioned defined measurement requirements, and the measurement requirements that may be added in the future are also applicable. .

In this embodiment, the wireless state is determined by the relative condition, and the condition 1 is RSRP Scell>RSRPPcell-2dBm, and the condition 2 is RSRP Scell<RSRPPcell-5dBm, and condition 3 is satisfied as condition 1 or condition 2 cannot be satisfied. The corresponding measurement requirements require two types of co-frequency measurement requirements, and inter-frequency measurement requirements. Which satisfies the condition 1 or condition 2 corresponding to the inter-frequency measurement requirement, and satisfies the condition 3 corresponding to the same-frequency measurement requirement.

The base station configures two carriers for the UE to perform carrier aggregation. The primary cell Pcell and the secondary cell ScelL Pcell and Scell both have uplink and downlink carriers, and the downlink carrier of the Pcell belongs to the 2G Hz band. It belongs to the 800M Hz band. In general, the UE uses a multi-receiver technology for carrier aggregation of carriers that are isolated from such a frequency band, that is, a carrier of one frequency band is received by a set of independent RF receiving circuits. The Pcell is activated by default, and the Scell is inactive by default. When the service traffic of the UE increases, the Scell is activated for data transmission. When the traffic decreases, the eNB may notify the UE to deactivate the Scell, or the UE may use the deactivation timer, when there is no data transmission for a period of time. Scell can enter the deactivated state by itself. The eNB also configures the corresponding measurement for the UE. The eNB configures the UE to measure the frequency F1 where the Pcell is located, the frequency F2 where the Scell is located, and the other frequency F3, and configure the Measurement GAP to be pattern 0. According to the measurement requirements of the LTE system, the UE measures the frequency of the cell on the frequency at which the Pcell is located according to the same frequency measurement requirement of the non-DRX configuration, that is, the cell with the frequency of the Pcell is measured in a period of 200 ms, and the cell at the frequency of the F3 is in accordance with the regulations. The measurement period is 480 < Nfreq. According to the set rule, the deactivation carrier is full. When the signal quality of the foot satisfies the condition 1 (the relative threshold is RSRP Scell > RSRPPcell-2dBm in this embodiment), the de-activated Scell is measured using the inter-frequency measurement, otherwise the frequency of the deactivated Scell is required to be used by the same-frequency measurement. The upper cell performs measurements. If the Scell satisfies the RSRP Scell>RSRPPcell-2dBm at this time, the Scell signal is good and does not need to be measured frequently. The UE measures the Scell and other neighboring cells on the F2/F3. At each GAP, it is performed. For measurement, the measurement requirement for inter-frequency measurement is 480 <Nfreq, at which time Nfreq=2, that is, Scell is measured in GAP every 960 ms. Similarly, if the signal quality satisfies condition 2 (relative threshold RSRP Scell<RSRPPcell-5dBm), it indicates that the Scell signal is poor, is not suitable for activation, and does not need to be measured frequently. When the Scell signal is between strong and weak, it needs to be determined as soon as possible whether it is suitable for activation, or whether it is not suitable for activation. In addition, the UE also needs to shorten the measurement period of deactivating the Scell. In this embodiment, for example, when the Scell signal quality satisfies the condition When the above condition 1 or condition 2 cannot be satisfied, that is, when RSRP Scell<RSRPPcell-2dBm and RSRP Scell>RSRPPcell-5dBm, the UE uses the same frequency measurement requirement to measure it, that is, the deactivated Scell is measured every 200ms. In order to meet the measurement requirements, in this embodiment, when the UE has redundant unused radio frequency receiving circuits, the UE may enable the independent radio frequency receiving circuit to measure the cell on the frequency where the Scell is located. If the Pcell and the Scell belong to the same frequency band, as if they belong to the 2G frequency band, the Scell needs to tuned its receiver when the RSRP Scell <RSRPPcell - 2dBm and RSRP Scell>RSRPPcell-5dBm are satisfied, and simultaneously receive and measure the Pcell and the Scell, and measure the Pcell. Use the same measurement requirements as Scell. After satisfying Condition 1 or Condition 2 above, the UE may turn off the dedicated receiver of the Scell for the UE with the redundant receiver, and measure the Scell when the GAP is used. For the UE without the redundant receiver, the UE may be tuned when the condition is met. The receiver only receives the Pcell, and uses the inter-frequency measurement requirement for the Scell. When the GAP is used, the measurement is performed.

The conditions that the above signal quality should satisfy may be preset, or the eNB is configured by public signaling or dedicated signaling. For example, dedicated signaling can be passed through the measurement tasks of the LTE system. For example, in the embodiment, the serving cell is better than the specified threshold 1, as in the embodiment, 80 dBm is taken, and A2 is the serving cell is less than the specified threshold 2, which is 100 dBm in this embodiment. When the Scell satisfies the A1 event or the A2 event, it enters the trigger cell list (CellTriggerList) of the A1 event or the A2 event. When the signal for deactivating the Scell is good enough, or is sufficiently poor, it can be determined that the deactivated Scell can be activated. Or, when not inactive, Scell uses looser measurement requirements to achieve power saving. In addition to the inter-frequency measurement requirements described above, it can also be configured to relax the measurement in a DRX-like manner, such as DRX. The measurement period of more than 40ms is measured every 5s. The latter is more suitable for the Pcell configuration. For example, the DRX period is configured to be 0.256s. At this time, the inter-frequency cell measurement period will be extended to 5.12xNfreqs. When the deactivated carrier does not satisfy the foot A event and the A2 event, that is, the trigger cell list that is not in the A1 event or the A2 event, according to the above rule, the deactivated Scell uses the measurement request of the active carrier, which is the same as the measurement request of the PCell. .

2 is a schematic diagram of dynamically adjusting measurement requirements according to signal quality changes. As shown in FIG. 2, the two horizontal dashed lines in the figure are the condition 1 and condition 2 of the foregoing setting. When the deactivated carrier condition is better or worse, The measurement requirements are relatively low, and the measurement activity is relatively small. When the deactivated carrier condition is between the two horizontal dashed lines in the figure, the measurement activity is relatively frequent. Figure 2a is another schematic diagram of dynamically adjusting the measurement requirements according to the signal quality change. As shown in Figure 2a, the dashed line corresponds to the previously set condition 3. When the condition 3 (lower part of the dotted line) is not met, the measurement requirements are relatively high. High, the measurement activity is relatively frequent, and when the condition 3 (the upper part of the dotted line) is satisfied, the set measurement requirements are relatively low, and the measurement activity is relatively small. The above is a scenario in which two wireless states correspond to two measurement requirements. Another typical mode may also be a scenario in which two wireless states correspond to two measurement requirements. According to a certain threshold, the threshold may be predefined. Or the eNB assigns to the UE, such as the above A1 event or A2 event, or an otherwise specified s-threshold. When the UE determines that the deactivated cell satisfies the A1 event or is greater than the s-threshold, the signal for deactivating the Scell is good enough to determine the go. The activation of the Scell can be activated, and the Scell uses the looser measurement requirements described above to achieve power saving. Otherwise, when the eNB does not satisfy the A1 event, or satisfies the A2 event or is less than the s-threshold, the signal for deactivating the Scell is not good enough at this time, and it cannot be determined that the activated Scell can be activated, and the Scell uses the above-mentioned higher measurement requirement.

In summary, the UE dynamically adjusts the measurement requirement of the deactivated carrier according to the signal quality change of the deactivated carrier, thereby achieving the effect of both fast activation and power saving of the deactivated carrier.

3 is a schematic diagram of a first component structure of a carrier measurement system in a multi-carrier system according to the present invention. As shown in FIG. 3, the carrier measurement system in the multi-carrier system of the present invention includes a setting unit 30 and a measurement unit 31;

The setting unit 30 is configured to set more than one measurement requirement for the deactivated carrier;

The measuring unit 31 is disposed in the UE, and is configured to apply different measurement requirements according to different states in which the carrier is deactivated.

The different states in which the above deactivated carriers are located are based on the signal quality to distinguish states according to the wireless environment.

The setting unit 30 further presets a correspondence relationship between the state of the deactivated carrier and the measurement request;

The measuring unit 31 further determines the state of the deactivated carrier according to the signal quality information of the deactivated carrier, and further determines the measurement requirement of the deactivated carrier, and determines the deactivated carrier according to the determined measurement requirement. Make measurements.

On the basis of the system shown in FIG. 3, the carrier measurement system in the multi-carrier system of the present invention further includes a notification unit (not shown in FIG. 3), which is disposed on the network side for setting the state of the set deactivated carrier. Notifying the UE of the correspondence between the measurement requirements;

The measuring unit 31 further determines the state of the deactivated carrier according to the signal quality information of the deactivated carrier, and further determines the measurement requirement of the deactivated carrier, and determines the deactivated carrier according to the determined measurement requirement. Make measurements. The setting unit 30 further includes a measurement amount for detecting a signal quality, and a value corresponding to a measurement quantity that is poor in signal quality and better;

The measurement requirement of the deactivated carrier measurement is specifically as follows: The measurement requirement of the activated carrier is consistent with the measurement requirement of the inter-frequency cell; or the measurement requirement of the deactivated carrier is consistent with the measurement requirement of the DRX for activating the carrier configuration.

The measurement requirement for deactivating the carrier measurement is as follows: The measurement requirement of the deactivated carrier is consistent with the measurement requirement of the same frequency cell; or, the measurement requirement of the deactivated carrier is consistent with the measurement requirement of the DRX for activating the carrier configuration.

The above measurement requirements include at least one of the following:

It should be understood by those skilled in the art that the carrier measurement system in the multi-carrier system shown in FIG. 3 of the present invention is designed to implement the carrier measurement method in the foregoing multi-carrier system, and the implementation functions of the foregoing processing units may refer to the foregoing method. Understand the relevant description. The functions of the various processing units in the figure can be implemented by a program running on a processor, or by a specific logic circuit.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Range of protection.

Claims

Claim

A carrier measurement method in a multi-carrier system, characterized in that more than one measurement requirement is set for a deactivation carrier; the method further includes:

The user equipment UE applies different measurement requirements according to the different states in which the carrier is deactivated.

2. The method according to claim 1, wherein the different states in which the deactivated carriers are located are different according to signal quality, and the states are distinguished according to signal quality.

The method according to claim 2, wherein the method further comprises: presetting a correspondence between a state of the deactivated carrier and a measurement request;

The UE applies different measurement requirements according to different states according to the deactivated carrier: the UE 4 determines the state of the deactivated carrier according to the signal quality information of the deactivated carrier, and further determines the deactivated carrier. The measurement requirements are measured and the deactivated carrier is measured in accordance with the determined measurement requirements.

4. The method according to claim 3, wherein the method further comprises: setting a measurement quantity for detecting a signal quality, and a value corresponding to a measurement quantity of a poor signal quality and a good time;

The correspondence between the state of setting the deactivated carrier and the measurement requirement is:

The method according to claim 3, wherein the method further comprises: setting a measurement quantity for detecting a signal quality, and a value corresponding to the measurement quantity of the signal quality being poor and being better; The correspondence between the state of setting the deactivated carrier and the measurement requirement is:

The method according to claim 4 or 5, wherein the measured quantity is an absolute measured quantity or a relative measured quantity; the measured quantity is a received reference signal power RSRP or a reference signal received by the UE The quality of RSRQ.

7. The method according to claim 6, wherein the condition that the signal quality is good or the signal quality is poor is:

The measured amount of the signal meets a predefined threshold condition or, alternatively, the set measurement event is triggered.

The method according to claim 7, wherein the method further comprises: measuring the measured quantity for detecting the signal quality, obtaining the measurement result, performing filtering, and using the filtered result as The final measurement of the measured quantity.

The method according to claim 4 or 5, wherein the measurement requirement 1 of the deactivation carrier measurement is: the measurement requirement of the activation carrier is consistent with the measurement requirement of the inter-frequency cell; or the measurement requirement and activation of the deactivation carrier The measurement requirements for the discontinuous reception DRX of the carrier configuration are consistent.

10. The method according to claim 9, wherein the measurement requirement 2 of the deactivation carrier measurement is: the measurement requirement of the deactivated carrier is consistent with the same frequency cell measurement requirement; or the measurement requirement and activation of the deactivated carrier The DRX measurement requirements for carrier configuration are consistent.

The method according to claim 4 or 5, wherein the measurement requirement comprises at least one of the following:

12. A carrier measurement system in a multi-carrier system, the system comprising a setting unit and a measuring unit; The setting unit is configured to set more than one measurement requirement for the deactivated carrier; the measuring unit is disposed in the UE, and is configured to apply different measurement requirements according to different states in which the carrier is deactivated.

13. The system according to claim 12, wherein the different states of the deactivated carriers are different according to signal quality, according to different states of the wireless environment.

The system according to claim 13, wherein the setting unit further presets a correspondence between a state of the deactivated carrier and a measurement request;

The system according to claim 13, wherein the system further comprises a notification unit, configured on the network side, for notifying the UE of the correspondence between the set state of the deactivated carrier and the measurement request ;

The system according to claim 13 or 14, wherein the setting unit further sets a measurement amount for detecting a signal quality, and a value corresponding to a measurement quantity that is poor in signal quality and better;

The correspondence between the state of the deactivated carrier and the measurement requirement is:

Or, the value of the measured amount of the deactivated carrier signal quality corresponds to the better signal quality, The measurement requirement of the UE for deactivating the carrier measurement is 1; the value of the measurement amount of the deactivated carrier signal quality corresponds to the measurement requirement of the UE for deactivating the carrier measurement when the signal quality is poor.

16. The system according to claim 15, wherein the measurement requirement 1 of the deactivation carrier measurement is: the measurement requirement of the activated carrier is consistent with the inter-frequency cell measurement requirement; or the measurement requirement of the deactivated carrier and the activated carrier configuration The DRX measurement requirements are consistent.

17. The method according to claim 15, wherein the measurement requirement 2 of the deactivation carrier measurement is: the measurement requirement of the deactivated carrier is consistent with the same frequency cell measurement requirement; or the measurement requirement and activation of the deactivated carrier The DRX measurement requirements for carrier configuration are consistent.

18. System according to claim 13 or 14, characterized in that said measurement requirements comprise at least one of the following: