CN110099394B - Method and device for realizing pilot frequency measurement and inter-system measurement and user equipment - Google Patents
Method and device for realizing pilot frequency measurement and inter-system measurement and user equipment Download PDFInfo
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Abstract
The invention provides a method and a device for realizing pilot frequency measurement and inter-system measurement, and user equipment. The method comprises the following steps: judging whether the UE enters a short DRX mode in an RRC connected state; when the UE enters a short DRX mode in an RRC connected state, judging whether the network starts to measure the different systems; when the network measures the measurement of the different systems, judging whether the signal coverage of the LTE cell where the UE resides is lower than a preset threshold; and when the signal coverage of the LTE cell where the UE resides is lower than a preset threshold, performing pilot frequency measurement by using idle time except for the measurement gap configured by the network in an inactive period, and performing inter-system measurement by using the measurement gap configured by the network. The invention can fully utilize the inactive period of the short DRX in the connection state to carry out pilot frequency measurement, utilize the measurement gap configured by the network to carry out inter-system measurement, accelerate the measurement report of the inter-system under the condition of not influencing the pilot frequency measurement and prevent the UE from dropping the call.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, and a user equipment for implementing inter-frequency measurement and inter-system measurement.
Background
In an LTE (Long Term Evolution) wireless network, in an RRC _ CONNECTED (RRC CONNECTED) state, a UE (User Equipment) measures RSSI (Received Signal Strength Indication), RSRP (Reference Signal Receiving Power), and RSRQ (Reference Signal Receiving Quality) related indexes of a serving cell and an adjacent LTE cell, and reports the measured indexes to the network, and also configures Signal Quality measurement of a different system cell and reports the network, where a measurement result has a direct influence on reasonably and effectively performing Handover (Handover) of the UE, and is a very important function in a CONNECTED state. Currently, the LTE RRC _ CONNECTED state does not include a long DRX (Discontinuous Reception) mode, and the inter-system and inter-frequency measurement scheduling method of the UE mainstream is mainly allocated according to the measurement gap (gap) configured by the network and the number of measurement frequency points, so as to perform inter-frequency measurement and inter-system measurement.
Due to the limited number of measurement gaps issued by the network, when the number of pilot frequency points of the LTE is large, the number of measurement gaps allocated by the inter-system is very small, and when the LTE coverage is poor, SRVCC (Single Radio Voice Call Continuity) cannot be timely sent to the inter-system mode, and a drop Call occurs under the LTE. When the UE enters the DRX mode, the UE periodically enters active (active) periods and un-active (inactive) periods. When entering an un-active period, the UE enters an idle time and may enter a sleep state, where LTE may be used to perform inter-frequency measurement, and a measurement gap configured by the network may be used for measurement for an inter-system as much as possible.
When a UE performs Voice over LTE (Voice over LTE) telephony service, the UE enters RRC _ CONNECTED mode, and due to the characteristics of Voice over LTE telephony data service, the UE in LTE is generally configured with DRX by the network. In one DRX cycle, the UE under LTE is divided into two parts, i.e., On Duration and Opportunity for DRX, in which the UE must monitor PDCCH (Physical Downlink Control Channel) to receive C-RNTI (Cell Radio Network Temporary Identifier), TPC-PUCCH-Radio Network Temporary Identifier, TPC-PUSCH (Transmit Power Control Physical Uplink Control Channel Temporary Identifier), TPC-PUSCH-RNTI (semi-Power Control Physical Uplink Shared Channel Temporary Identifier), and the other part of the DRX cycle is the UE scheduling time. Due to the requirement on measurement accuracy and the limitation of the measurement reporting time of the physical layer, the UE can measure the serving cell, the neighboring LTE cell and other neighboring cells of different systems within one DRX cycle. In the prior art, as shown in fig. 1, the configuration of the UE for performing inter-frequency measurement and inter-system measurement is shown, and it can be seen that in the RRC _ CONNECTED short DRX mode, the UE only uses periodic measurement gaps allocated by the network to perform measurement, cannot perform sufficient measurement on the inter-system, cannot report measurement values of the inter-system in time, and if LTE coverage is poor in the current network environment, the UE cannot perform SRVCC in time when performing VOLTE telephony service, and is prone to call drop.
Disclosure of Invention
The method, the device and the user equipment for implementing the pilot frequency measurement and the inter-system measurement can fully utilize the inactive period of the short DRX in a connection state to carry out the pilot frequency measurement, utilize the measurement gap configured by a network to carry out the inter-system measurement, accelerate the measurement report of the inter-system without influencing the pilot frequency measurement, and prevent the UE from dropping the call.
In a first aspect, the present invention provides a method for implementing inter-frequency measurement and inter-system measurement, where the method is applied to a UE, and the method includes:
judging whether the UE enters a short DRX mode in an RRC connected state;
when the UE enters a short DRX mode in an RRC connected state, judging whether the network starts to measure the different systems;
when the network measures the measurement of the different systems, judging whether the signal coverage of the LTE cell where the UE resides is lower than a preset threshold;
and when the signal coverage of the LTE cell where the UE resides is lower than a preset threshold, performing pilot frequency measurement by using idle time except for the measurement gap configured by the network in an inactive period, and performing inter-system measurement by using the measurement gap configured by the network.
Optionally, the determining whether the LTE cell signal coverage where the UE resides is lower than a predetermined threshold includes: and judging whether the reference signal receiving power of the LTE cell where the UE resides is lower than a preset threshold.
Optionally, after the inter-frequency measurement is performed in the inactive period by using the idle time except for the network configured measurement gap, and the inter-system measurement is performed by using the network configured measurement gap, the method further includes:
and when the UE does not enter a short DRX mode in an RRC connection state, or the network does not measure the different systems, or the signal coverage of an LTE cell where the UE resides is not lower than a preset threshold, performing different frequency measurement and different system measurement by using a measurement gap configured by the network.
Optionally, after the inter-frequency measurement is performed in the inactive period by using the idle time except for the network configured measurement gap, and the inter-system measurement is performed by using the network configured measurement gap, the method further includes:
and when the pilot frequency measurement cannot be satisfied twice in the inactive period, performing pilot frequency measurement and inter-system measurement by using the measurement gap configured by the network.
In a second aspect, the present invention provides an apparatus for implementing inter-frequency measurement and inter-system measurement, where the apparatus is located in a UE, and the apparatus includes:
a first judging unit, configured to judge whether the UE enters a short DRX mode in an RRC connected state;
a second judging unit, configured to judge whether the network starts to measure the inter-system measurement when the UE enters the short DRX mode in the RRC connected state;
A third judging unit, configured to judge whether signal coverage of an LTE cell where the UE resides is lower than a predetermined threshold when the network starts to measure the inter-system measurement;
the first measurement unit is used for performing inter-frequency measurement by using idle time except for a measurement gap configured by a network in an inactive period and performing inter-system measurement by using the measurement gap configured by the network when signal coverage of an LTE cell where the UE resides is lower than a predetermined threshold.
Optionally, the third determining unit is configured to determine whether a reference signal received power of an LTE cell where the UE resides is lower than a predetermined threshold.
Optionally, the apparatus further comprises:
and the second measurement unit is used for performing pilot frequency measurement by using the idle time except the measurement gap configured by the network in the inactive period, and performing the inter-system measurement by using the measurement gap configured by the network, and then performing the inter-frequency measurement and the inter-system measurement by using the measurement gap configured by the network when the UE does not enter the short DRX mode in the RRC connected state, or the network does not start to measure the inter-system measurement, or the signal coverage of the LTE cell where the UE resides is not lower than a predetermined threshold.
Optionally, the apparatus further comprises:
And the third measurement unit is used for performing pilot frequency measurement by using idle time except for the measurement gap configured by the network in the inactive period, and performing pilot frequency measurement and inter-system measurement by using the measurement gap configured by the network when the pilot frequency measurement cannot be satisfied twice in the inactive period after performing the inter-system measurement by using the measurement gap configured by the network.
In a third aspect, the present invention provides a ue, where the ue includes the apparatus for implementing inter-frequency measurement and inter-system measurement.
According to the method, the device and the user equipment for implementing the pilot frequency measurement and the inter-system measurement, provided by the embodiment of the invention, the idle time except the measurement gap configured by the network is utilized to perform the pilot frequency measurement in the non-activated period under the condition that the preset condition is met, the measurement gap configured by the network is utilized to perform the inter-system measurement, the idle time in the non-activated period is fully utilized to perform the pilot frequency measurement, and the pilot frequency measurement time in the non-activated period is increased, so that more measurement gaps can be allocated for the inter-system measurement, the measurement report of the inter-system can be accelerated under the condition that the pilot frequency measurement is not influenced, and the call drop of the UE can be prevented.
Drawings
Fig. 1 is a schematic configuration diagram of a UE performing inter-frequency measurement and inter-system measurement in the prior art;
fig. 2 is a flowchart of a method for implementing inter-frequency measurement and inter-system measurement according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for implementing inter-frequency measurement and inter-system measurement according to another embodiment of the present invention;
fig. 4 is a schematic configuration diagram of a UE performing inter-frequency measurement and inter-system measurement according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus for implementing inter-frequency measurement and inter-system measurement according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an apparatus for implementing inter-frequency measurement and inter-system measurement according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for implementing inter-frequency measurement and inter-system measurement, where the method is applied to a UE, and as shown in fig. 2, the method includes:
s21, judging whether the UE enters into short DRX mode under RRC connection state, if yes, executing step S22, otherwise executing step S25.
S22, judging whether the network detects the inter-system measurement, if yes, executing step S23, otherwise executing step S25.
S23, judging whether the signal coverage of the LTE cell where the UE resides is lower than a preset threshold, if so, executing a step S24, otherwise, executing a step S25.
And S24, performing inter-frequency measurement by using idle time except the measurement gap configured by the network in the inactive period, and performing inter-system measurement by using the measurement gap configured by the network.
And S25, performing inter-frequency measurement and inter-system measurement by using the measurement gap configured by the network.
The method for implementing pilot frequency measurement and inter-system measurement provided by the embodiment of the invention utilizes the idle time except the measurement gap configured by the network to carry out pilot frequency measurement in the non-activated period and utilizes the measurement gap configured by the network to carry out inter-system measurement under the condition of meeting the preset condition, fully utilizes the idle time in the non-activated period to carry out pilot frequency measurement, and increases the pilot frequency measurement time in the non-activated period, thereby being capable of allocating more measurement gaps for the inter-system measurement, further being capable of accelerating the measurement report of the inter-system without influencing the pilot frequency measurement and preventing the UE from dropping calls.
The method for implementing inter-frequency measurement and inter-system measurement according to the present invention will be described in detail below.
As shown in fig. 3, the method for implementing inter-frequency measurement and inter-system measurement includes:
s31, judging whether the UE enters into short DRX mode under RRC connection state, if yes, executing step S32, otherwise executing step S37.
Specifically, it may be determined whether the UE enters the DRX mode in the RRC connected state and whether the DRX cycle is less than 128ms, and if so, it is determined that the UE enters the short DRX mode in the RRC connected state.
S32, judging whether the network detects the inter-system measurement, if yes, executing step S33, otherwise executing step S37.
S33, judging whether the signal coverage of the LTE cell where the UE resides is lower than a preset threshold, if so, executing a step S34, otherwise, executing a step S37.
Specifically, it may be determined whether RSRP of an LTE cell in which the UE camps is lower than a predetermined threshold. Wherein the predetermined threshold is, for example, -105 db.
And S34, performing inter-frequency measurement by using idle time except the measurement gap configured by the network in the inactive period, and performing inter-system measurement by using the measurement gap configured by the network.
Specifically, a configuration in which the UE performs inter-frequency measurement and inter-system measurement in the inactive period is shown in fig. 4.
S35, judging whether the current UE does not meet one of the following three conditions: short DRX mode is not entered in an RRC connected state; the network does not measure the different systems; and if the signal coverage of the LTE cell where the UE resides is not lower than the preset threshold, executing the step S37, otherwise executing the step S36.
S36, judging whether the UE can not satisfy the pilot frequency measurement twice in the inactive period, if so, executing step S37, otherwise, returning to execute step S35.
And S37, performing inter-frequency measurement and inter-system measurement by using the measurement gap configured by the network.
According to the requirement of the 3GPP protocol for the physical layer measurement reporting time, the physical layer measurement reporting time is larger than the DRX period, and each measurement in a wireless environment is an independent event, so that the measurement precision of the measurement time cannot be influenced by unevenly arranging the measurement time, and therefore the implementation method of the pilot frequency measurement and the inter-system measurement provided by the embodiment of the invention can meet the requirement of the 3GPP protocol for the physical layer measurement reporting time.
An embodiment of the present invention further provides an apparatus for implementing inter-frequency measurement and inter-system measurement, where the apparatus is located in a UE, and as shown in fig. 5, the apparatus includes:
a first determining unit 21, configured to determine whether the UE enters a short DRX mode in an RRC connected state;
A second determining unit 22, configured to determine whether the network starts to measure the inter-system measurement when the UE enters the short DRX mode in the RRC connected state;
a third determining unit 23, configured to determine whether signal coverage of an LTE cell where the UE resides is lower than a predetermined threshold when the network starts to measure the inter-system measurement;
a first measurement unit 24, configured to perform inter-frequency measurement using idle time except for a network configured measurement gap in an inactive period and perform inter-system measurement using the network configured measurement gap when signal coverage of an LTE cell in which the UE resides is lower than a predetermined threshold.
The device for implementing pilot frequency measurement and inter-system measurement provided by the embodiment of the invention utilizes the idle time except the measurement gap configured by the network to carry out pilot frequency measurement in the non-activated period and utilizes the measurement gap configured by the network to carry out inter-system measurement under the condition of meeting the preset condition, fully utilizes the idle time in the non-activated period to carry out pilot frequency measurement, and increases the pilot frequency measurement time in the non-activated period, thereby being capable of allocating more measurement gaps for the inter-system measurement, further being capable of accelerating the measurement report of the inter-system without influencing the pilot frequency measurement and preventing the UE from dropping calls.
Optionally, the third determining unit 23 is configured to determine whether the reference signal received power of the LTE cell where the UE resides is lower than a predetermined threshold.
Further, as shown in fig. 6, the apparatus further includes:
a second measurement unit 25, configured to perform inter-frequency measurement and inter-system measurement by using the idle time except for the network configured measurement gap in the inactive period by the first measurement unit 24, and after performing inter-system measurement by using the network configured measurement gap, when the UE does not enter the short DRX mode in the RRC connected state, or the network does not start to measure the inter-system measurement, or the LTE cell signal coverage where the UE resides is not lower than a predetermined threshold, by using the network configured measurement gap.
Further, as shown in fig. 6, the apparatus further includes:
a third measurement unit 26, configured to perform inter-frequency measurement and inter-system measurement using the measurement gap configured by the network when the inter-frequency measurement cannot be satisfied twice in the inactive period after the first measurement unit 24 performs the inter-frequency measurement using the idle time except the measurement gap configured by the network in the inactive period and performs the inter-system measurement using the measurement gap configured by the network after performing the inter-system measurement using the measurement gap configured by the network.
The apparatus of this embodiment may be configured to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
The embodiment of the invention also provides the user equipment which comprises the device for realizing the pilot frequency measurement and the inter-system measurement.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A method for implementing inter-frequency measurement and inter-system measurement is applied to UE, and is characterized in that the method comprises the following steps:
judging whether the UE enters a short DRX mode in an RRC connected state;
when the UE enters a short DRX mode in an RRC connection state, judging whether the network starts to measure the different systems;
when the network measures the measurement of the different systems, judging whether the signal coverage of the LTE cell where the UE resides is lower than a preset threshold;
when the signal coverage of the LTE cell where the UE resides is lower than a preset threshold, performing pilot frequency measurement by using idle time except for a measurement gap configured by the network in an inactive period, and performing inter-system measurement by using the measurement gap configured by the network;
and when the pilot frequency measurement cannot be satisfied twice in the inactive period, performing pilot frequency measurement and inter-system measurement by using the measurement gap configured by the network.
2. The method of claim 1, wherein the determining whether the signal coverage of the LTE cell in which the UE camps is lower than a predetermined threshold comprises: and judging whether the reference signal receiving power of the LTE cell where the UE resides is lower than a preset threshold.
3. The method according to claim 1 or 2, wherein after the inter-frequency measurement is performed in the inactive period by using the idle time except for the network configured measurement gap, and the inter-system measurement is performed by using the network configured measurement gap, the method further comprises:
And when the UE does not enter a short DRX mode in an RRC connection state, or the network does not measure the different systems, or the signal coverage of an LTE cell where the UE resides is not lower than a preset threshold, performing different frequency measurement and different system measurement by using a measurement gap configured by the network.
4. An apparatus for implementing inter-frequency measurement and inter-system measurement, the apparatus being located in a UE, the apparatus comprising:
a first judging unit, configured to judge whether the UE enters a short DRX mode in an RRC connected state;
a second judging unit, configured to judge whether the network starts to measure the inter-system measurement when the UE enters the short DRX mode in the RRC connected state;
a third judging unit, configured to judge whether signal coverage of an LTE cell where the UE resides is lower than a predetermined threshold when the network starts to measure the inter-system measurement;
a first measurement unit, configured to, when signal coverage of an LTE cell where the UE resides is lower than a predetermined threshold, perform inter-frequency measurement using idle time except for a measurement gap configured by the network in an inactive period, and perform inter-system measurement using the measurement gap configured by the network;
and a third measurement unit, configured to perform inter-frequency measurement and inter-system measurement using the measurement gap configured by the network when the inter-frequency measurement cannot be satisfied twice in the inactive period after the first measurement unit performs the inter-frequency measurement using the idle time except the measurement gap configured by the network in the inactive period and performs the inter-frequency measurement using the measurement gap configured by the network after performing the inter-system measurement using the measurement gap configured by the network.
5. The apparatus of claim 4, wherein the third determining unit is configured to determine whether a reference signal received power of an LTE cell in which the UE resides is lower than a predetermined threshold.
6. The apparatus of claim 4 or 5, further comprising:
and the second measurement unit is used for performing pilot frequency measurement by using the idle time except the measurement gap configured by the network in the inactive period, and performing the inter-system measurement by using the measurement gap configured by the network, and then performing the inter-frequency measurement and the inter-system measurement by using the measurement gap configured by the network when the UE does not enter the short DRX mode in the RRC connected state, or the network does not start to measure the inter-system measurement, or the signal coverage of the LTE cell where the UE resides is not lower than a predetermined threshold.
7. A user equipment, characterized in that the user equipment comprises the device for implementing inter-frequency measurement and inter-system measurement according to any one of claims 4 to 6.
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| CN111278066B (en) * | 2020-01-16 | 2022-01-28 | 展讯通信（上海）有限公司 | Neighbor cell measurement method, user equipment and computer-readable storage medium |
| EP4080952A4 (en) * | 2020-01-19 | 2023-01-25 | Huawei Technologies Co., Ltd. | Paging method and communication apparatus |
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