CN105813132B - A kind of the carrier wave anti-activating method and system of LTE-A - Google Patents
A kind of the carrier wave anti-activating method and system of LTE-A Download PDFInfo
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Abstract
The present invention provides the carrier wave anti-activating methods of LTE-A a kind of, this method comprises: the high level data arrival rate of each business of counting user equipment, judges whether the high level data arrival rate is less than preset deactivation threshold value；If the high level data arrival rate is less than preset deactivation threshold value, the load of each carrier wave of the user equipment is obtained, and selecting the carrier wave most lightly loaded in addition to main carrier is deactivation carrier wave；Judge whether other carrier waves can receive the load for deactivating carrier wave, if so, carrying out deactivation processing to the deactivation carrier wave.The present invention also provides the carrier wave deactivation system of LTE-A a kind of, which includes first judgment module, selecting module, the second judgment module and deactivates flexible module.The present invention, which can be avoided repeatedly, there is carrier activation, deactivated problem, improves the efficiency of total system.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a carrier deactivation method and system of LTE-A.
Background
In a Long Term Evolution (LTE) system, the maximum transmission bandwidth supported by the system is 20 MHz. In order to provide a higher data rate for a mobile User, a Carrier Aggregation (CA) technology is proposed in a Long Term evolution advanced (Long Term evolution-advanced, LTE-a) system, which aims to provide a larger bandwidth for a User Equipment (UE) with a corresponding capability and improve the peak rate of the UE. The CA aggregates two or more Component Carriers (CCs) to support a transmission bandwidth greater than 20MHz, up to 100 MHz. An LTE-a system employing carrier aggregation technology is a multi-carrier system.
A base station may add a new cell configuration to a UE through Radio Resource Control (RRC) signaling, where the UE operates on multiple carriers and needs to use a Radio transceiver with a bandwidth exceeding 20MHz or use multiple Radio transceivers, which may greatly increase battery power consumption of the UE. Thus, considering the bursty nature of traffic, while the UE may use up to 5 carriers of bandwidth at the highest rate, the actual traffic flow of the UE is very little or close to zero during the burst gap, which may result in higher power overhead if the UE continues to receive/transmit data on multiple carriers. Therefore, in order to prolong the working time of the UE, turn off the radio transceiver devices which are not required to be turned on, and reduce the unnecessary battery consumption, a carrier activation/deactivation mechanism is introduced on the basis of the above increase/decrease of the cell configuration (carrier configuration). The downlink carrier and the uplink carrier in one cell can be activated/deactivated independently.
In the current LTE-a system protocol, there is no specific regulation on the principle of carrier deactivation, and deactivation is generally considered when the channel quality of the secondary carrier is too poor, or deactivation may be considered when the data amount is low, but this easily causes the remaining carrier resources to be insufficient and reactivates the secondary carrier, thereby causing ping-pong effect to activate and deactivate the carrier back and forth.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the LTE-A carrier wave deactivation method and the LTE-A carrier wave deactivation system, which can avoid the problem of repeated carrier wave activation and deactivation and improve the efficiency of the whole system.
In a first aspect, the present invention provides a carrier deactivation method for LTE-a, where the method includes:
a base station counts the high-level data arrival rate of each service of user equipment and judges whether the high-level data arrival rate is smaller than a preset deactivation threshold value or not;
if the high-level data arrival rate is smaller than a preset deactivation threshold value, acquiring the load of each carrier of the user equipment, and selecting the carrier with the lightest load except the main carrier as a deactivation carrier;
and judging whether other carriers can accept the load of the deactivated carrier, and if so, deactivating the deactivated carrier.
Preferably, the base station counts a high-level data arrival rate of each service of the user equipment, and includes:
and periodically counting the arrival rate of the high-level data of each service of the user equipment by a GPRS tunneling protocol GTP-U protocol layer of a user layer at the base station side.
Preferably, after the step of determining whether the high-layer data arrival rate is smaller than a preset deactivation threshold, the method further includes:
and if the high-level data arrival rate is greater than a preset deactivation threshold value, checking the service conditions of other user equipment.
Preferably, the determining whether the other carriers can accept the load of the deactivated carrier, and if so, performing deactivation processing on the deactivated carrier includes:
judging whether the receivable load capacity of other carriers is larger than the load of the deactivated carrier, namely judging whether the following formula is established, if so, deactivating the deactivated carrier:
wherein N isSCCThe number of the auxiliary carriers of the current user equipment is represented, PRB _ Num represents the number of the total physical resource modules PRB under the current bandwidth, and LoadPCCIndicating the Load of the main carrier, LoadSCCiRepresenting secondary carriers in addition to the deactivated carriersLoad of wave, where i ∈ [1, N ∈ ]SCC-1]；LoadUERepresenting the load of the deactivated carrier, and delta is a preset load redundancy amount.
Preferably, the deactivating the deactivated carrier includes:
and the base station deactivates the deactivated carrier wave by displaying a media intervention control MAC command notice or an agreed implicit rule.
In a second aspect, the present invention provides a carrier deactivation system for LTE-a, including:
the first judgment module is used for counting the high-level data arrival rate of each service of the user equipment and judging whether the high-level data arrival rate is smaller than a preset deactivation threshold value or not;
a selecting module, configured to obtain a load of each carrier of the user equipment when the high-level data arrival rate is smaller than a preset deactivation threshold, and select a carrier with a lightest load as a deactivation carrier except for a main carrier;
a second judging module, configured to judge whether another carrier can accept the load of the deactivated carrier;
and the deactivation module is used for deactivating the deactivated carrier when other carriers can accept the load of the deactivated carrier.
Preferably, the first judging module is configured to:
and periodically counting the arrival rate of the high-level data of each service of the user equipment at a GTP-U protocol layer at the base station side.
Preferably, the system further comprises:
and the service module is used for checking the service condition of other user equipment when the high-level data arrival rate is greater than a preset deactivation threshold value.
Preferably, the second determining module is specifically configured to:
judging whether the receivable load capacity of other carriers is larger than the load of the deactivated carrier, namely judging whether the following formula is established, if so, deactivating the deactivated carrier:
wherein N isSCCThe number of the auxiliary carriers of the current user equipment is represented, PRB _ Num represents the number of the total physical resource modules PRB under the current bandwidth, and LoadPCCIndicating the Load of the main carrier, LoadSCCiRepresenting the load of the secondary carriers other than the deactivated carrier, wherein i e [1, NSCC-1]；LoadUERepresenting the load of the deactivated carrier, and delta is a preset load redundancy amount.
Preferably, the deactivation module is specifically configured to:
and the base station deactivates the deactivated carrier wave by displaying a media intervention control MAC command notice or an agreed implicit rule.
According to the technical scheme, when the carrier is deactivated due to low data volume in the network, whether the deactivation is performed is judged in advance according to the load conditions of the rest carriers, so that the problems of repeated carrier activation and deactivation are avoided, and the efficiency of the whole system is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a carrier deactivation method for LTE-a according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a carrier deactivation method for LTE-a according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a carrier deactivation system of LTE-a according to an embodiment of the present invention.
Detailed Description
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 LTE-a system employing carrier aggregation technology is a multi-carrier system. A CC represents an uplink carrier or a downlink carrier, and an uplink CC and a downlink CC are associated together by some correspondence to form a Cell (Cell), so carrier Aggregation is also called Cell Aggregation (Cell Aggregation). The component carriers are divided into Primary Component Carriers (PCCs) and Secondary Component Carriers (SCCs) to facilitate management of the component carriers. The role of the downlink PCC includes establishment of RRC signaling connection, Non-Access Stratum (NAS) mobility, and input as security parameters, etc.; the uplink PCC is used to transmit control information of the physical layer. The downlink PCC and the uplink PCC are associated together to form a Primary Cell (PCell), and the downlink SCC and the optional uplink SCC are associated together to form a Secondary Cell (SCell).
After introducing the carrier aggregation technology, a base station (evolved NodeB, eNB) may configure up to 5 cells for a UE. After the UE establishes a service in a cell, due to an increase in UE service traffic or a Radio Resource Management (RRM) requirement of the base station, the base station may add a new cell configuration to the UE through a Radio Resource Control (RRC) signaling, specifically including configuration information related to uplink and downlink carriers of the newly added cell. On the contrary, because the UE traffic flow is reduced, or the signal quality of the cell currently configured to the UE is degraded, or RRM management based on the base station, the base station may delete the cell already configured to the UE through RRC signaling, specifically including configuration information of uplink and downlink carriers of the deleted cell. The above processes of adding and deleting cell configurations may occur simultaneously.
In the above, multiple cells are configured for the UE through RRC signaling, that is, the UE operates on multiple carriers, and the UE needs to use a radio transceiver with a bandwidth exceeding 20MHz or use multiple radio transceivers, which greatly increases battery power consumption of the UE. Thus, considering the bursty nature of traffic, while the UE may use up to 5 carriers of bandwidth at the highest rate, the actual traffic flow of the UE is very little or close to zero during the burst gap, which may result in higher power overhead if the UE continues to receive/transmit data on multiple carriers. Therefore, in order to prolong the working time of the UE, turn off the radio transceiver devices which are not required to be turned on, and reduce the unnecessary battery consumption, a carrier activation/deactivation mechanism is introduced on the basis of the above increase/decrease of the cell configuration (carrier configuration). The downlink carrier and the uplink carrier in one cell can be activated/deactivated independently.
The UE performs data reception only on the activated downlink carrier, such as monitoring of a Physical Downlink Control Channel (PDCCH); on the deactivated Downlink carrier, the UE does not monitor the PDCCH and does not receive data on a Physical Downlink Shared Channel (PDSCH), thereby achieving the purpose of saving power.
The UE only transmits data on the activated uplink carrier; on the deactivated Uplink carrier, the UE stops sending Uplink data, including stopping sending Uplink Reference signals (SRS), stopping sending data on a Physical Uplink Control Channel (PUCCH), stopping sending data on a Physical Uplink Shared Channel (PUSCH), and the like.
As shown in fig. 1, a carrier deactivation method for LTE-a according to an embodiment of the present invention includes the following steps:
101. the base station counts the high-level data arrival rate of each service of the user equipment and judges whether the high-level data arrival rate is smaller than a preset deactivation threshold value.
102. And if the high-level data arrival rate is smaller than a preset deactivation threshold value, acquiring the load of each carrier of the user equipment, and selecting the carrier with the lightest load except the main carrier as a deactivation carrier.
103. And judging whether other carriers can accept the load of the deactivated carrier, and if so, deactivating the deactivated carrier.
In this embodiment, the step 101 of calculating the high-level data arrival rate of each service of the user equipment specifically includes:
and periodically counting the arrival rate of the high-level data of each service of the user equipment by a GPRS tunneling Protocol (GTP-U) GTP-U Protocol layer of a user layer at the base station side. Among them, GPRS is General Packet Radio Service (General Packet Radio Service).
In this embodiment, after step 102, the method further includes:
and if the high-level data arrival rate is greater than a preset deactivation threshold value, checking the service conditions of other user equipment.
In this embodiment, the process of determining whether the other carriers can accept the load of the deactivated carrier in step 103 is as follows:
judging whether the receivable load capacity of other carriers is larger than the load of the deactivated carrier, namely judging whether the following formula is established, if so, deactivating the deactivated carrier:
wherein N isSCCIndicates the number of the auxiliary carriers of the current user equipment, PRB _ Num indicates the number of the total Physical Resource Blocks (PRBs) under the current bandwidth, and Load indicates the number of the PRBs under the current bandwidthPCCIndicating the Load of the main carrier, LoadSCCiRepresenting the load of the secondary carriers other than the deactivated carrier, wherein i e [1, NSCC-1]；LoadUERepresenting the load of the deactivated carrier, and delta is a preset load redundancy amount.
In this step, the other carriers refer to all carriers except the deactivated carrier, including the primary carrier and the secondary carrier.
In this embodiment, the deactivating carrier is deactivated in step 103, and the specific process is as follows:
the base station deactivates the deactivated carrier by displaying Media Access Control (MAC) command notification or an agreed implicit rule.
It should be noted that, in order to ensure the continuity of communication, once the primary carrier is configured and activated, the deactivation mechanism is only performed for the secondary carrier.
In the following, a carrier deactivation method of LTE-a is described by a more specific embodiment, which includes the following steps:
201. and counting the high-level data arrival rate of each service of the user equipment.
202. And judging whether the high-level data arrival rate is smaller than a preset deactivation threshold value, if so, turning to a step 203, and otherwise, turning to a step 204.
203. And acquiring the load condition of each carrier of the user equipment, and selecting the carrier with the lightest load except the main carrier as a deactivation carrier.
In this step, in order to ensure the continuity of communication, once the primary carrier is configured, it is activated, and the deactivation mechanism is executed only for the secondary carrier. The carrier with the lightest load except the main carrier is selected as the deactivation carrier.
204. And checking the service of other user equipment.
205. And judging whether other carriers can accept the load of the deactivated carrier, if so, turning to a step 206, and otherwise, turning to a step 207.
In this step, the other carriers refer to all carriers except the deactivated carrier, including the primary carrier and the secondary carrier.
206. And carrying out deactivation processing on the deactivated carrier.
207. The deactivated carrier is not processed.
In this step, the deactivated carrier is not processed, because if the deactivated carrier is deactivated, the rest of carrier resources are insufficient and the secondary carrier is activated again, thereby causing ping-pong effect to activate and deactivate the carrier back and forth.
According to the LTE-A carrier deactivation method and system provided by the embodiment, when the carrier deactivation is performed due to low data volume in the network, whether the deactivation processing is performed or not is judged in advance according to the load condition of the rest carriers, so that the problems of carrier activation and deactivation are avoided repeatedly, and the efficiency of the whole system is improved.
As shown in fig. 3, a schematic structural diagram of a carrier deactivation system of LTE-a according to an embodiment of the present invention includes a first determining module 301, a selecting module 302, a second determining module 303, and a deactivation module 304.
The first determining module 301 is configured to count a high-level data arrival rate of each service of the user equipment, and determine whether the high-level data arrival rate is smaller than a preset deactivation threshold.
A selecting module 302, configured to obtain a load of each carrier of the ue when the high-level data arrival rate is smaller than a preset deactivation threshold, and select a carrier with a lightest load as a deactivation carrier except for a main carrier.
A second determining module 303, configured to determine whether the other carriers can accept the load of the deactivated carrier.
A deactivating module 304, configured to deactivate the deactivated carrier when other carriers can accept the load of the deactivated carrier.
The first determining module 301 is configured to:
and periodically counting the arrival rate of the high-level data of each service of the user equipment at a GTP-U protocol layer at the base station side.
In this embodiment, the system further includes a service module:
and the service module is used for checking the service condition of other user equipment when the high-level data arrival rate is greater than a preset deactivation threshold value.
The second determining module 303 is specifically configured to:
judging whether the receivable load capacity of other carriers is larger than the load of the deactivated carrier, namely judging whether the following formula is established, if so, deactivating the deactivated carrier:
wherein N isSCCThe number of the auxiliary carriers of the current user equipment is represented, PRB _ Num represents the number of the total physical resource modules PRB under the current bandwidth, and LoadPCCRepresenting the main carrierLoad, LoadSCCiRepresenting the load of the secondary carriers other than the deactivated carrier, wherein i e [1, NSCC-1]；LoadUERepresenting the load of the deactivated carrier, and delta is a preset load redundancy amount.
The deactivation module 304 is specifically configured to:
and the base station deactivates the deactivated carrier wave by displaying a media intervention control MAC command notice or an agreed implicit rule.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A carrier deactivation method of an LTE-A (Long term evolution-advanced) system, the method comprising:
a base station counts the high-level data arrival rate of each service of user equipment and judges whether the high-level data arrival rate is smaller than a preset deactivation threshold value or not;
if the high-level data arrival rate is smaller than a preset deactivation threshold value, acquiring the load of each carrier of the user equipment, and selecting the carrier with the lightest load except the main carrier as a deactivation carrier;
judging whether other carriers can accept the load of the deactivated carrier, if so, deactivating the deactivated carrier; wherein,
the base station counts the high-level data arrival rate of each service of the user equipment, and the method comprises the following steps: and periodically counting the high-level data arrival rate of each service of the user equipment by a GPRS tunneling protocol GTP-U protocol layer of a user layer at the base station side.
2. The method of claim 1, wherein after the step of determining whether the high layer data arrival rate is less than a preset deactivation threshold, the method further comprises:
and if the high-level data arrival rate is greater than a preset deactivation threshold value, continuously checking the service conditions of other user equipment.
3. The method according to claim 1, wherein the determining whether the other carriers can accept the load of the deactivated carrier, and if so, deactivating the deactivated carrier includes:
judging whether the receivable load capacity of other carriers is larger than the load of the deactivated carrier, namely judging whether the following formula is established, if so, deactivating the deactivated carrier:
wherein N isSCCThe number of the auxiliary carriers of the current user equipment is represented, PRB _ Num represents the number of the total physical resource modules PRB under the current bandwidth, and LoadPCCIndicating the Load of the main carrier, LoadSCCiRepresenting the load of the secondary carriers other than the deactivated carrier, wherein i e [1, NSCC-1]；LoadUERepresenting the load of the deactivated carrier, and delta is a preset load redundancy amount.
4. The method of claim 1, wherein the deactivating the deactivated carrier comprises:
and the base station deactivates the deactivated carrier wave by displaying a media intervention control MAC command notice or an agreed implicit rule.
5. A system for carrier deactivation for LTE-a, the system comprising:
the first judgment module is used for counting the high-level data arrival rate of each service of the user equipment and judging whether the high-level data arrival rate is smaller than a preset deactivation threshold value or not;
a selecting module, configured to obtain a load of each carrier of the user equipment when the high-level data arrival rate is smaller than a preset deactivation threshold, and select a carrier with a lightest load as a deactivation carrier except for a main carrier;
a second judging module, configured to judge whether another carrier can accept the load of the deactivated carrier;
a deactivation module, configured to deactivate the deactivated carrier when another carrier can accept a load of the deactivated carrier; wherein,
the first judging module is configured to: and periodically counting the high-level data arrival rate of each service of the user equipment by a GTP-U protocol layer at the base station side.
6. The system of claim 5, further comprising:
and the service module is used for checking the service condition of other user equipment when the high-level data arrival rate is greater than a preset deactivation threshold value.
7. The system of claim 5, wherein the second determining module is specifically configured to:
judging whether the receivable load capacity of other carriers is larger than the load of the deactivated carrier, namely judging whether the following formula is established, if so, deactivating the deactivated carrier:
wherein N isSCCThe number of the auxiliary carriers of the current user equipment is represented, PRB _ Num represents the number of the total physical resource modules PRB under the current bandwidth, and LoadPCCIndicating the Load of the main carrier, LoadSCCiRepresenting the load of the secondary carriers other than the deactivated carrier, wherein i e [1, NSCC-1]；LoadUERepresenting the load of the deactivated carrier, and delta is a preset load redundancy amount.
8. The system of claim 5, wherein the deactivation module is specifically configured to:
and the base station deactivates the deactivated carrier wave by displaying a media intervention control MAC command notice or an agreed implicit rule.
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| CN106851681B (en) * | 2016-10-26 | 2020-01-14 | 京信通信***（中国）有限公司 | Method and device for processing auxiliary carrier |
| CN108712773B (en) * | 2018-05-04 | 2021-10-15 | 武汉虹信科技发展有限责任公司 | Parameter setting method, device and base station |
| CN111083770B (en) * | 2019-08-15 | 2023-08-29 | 中兴通讯股份有限公司 | Power saving method and device for terminal and information sending method and device |
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| CN102215551B (en) * | 2010-04-02 | 2015-08-19 | 电信科学技术研究院 | The method and apparatus of implicit carrier deexcitation |
| CN103209437B (en) * | 2012-01-11 | 2017-09-15 | 普天信息技术研究院有限公司 | A kind of activation and anti-activating method from member carrier |
| CN102724715B (en) * | 2012-06-08 | 2016-08-03 | 华为技术有限公司 | The control method of a kind of auxiliary carrier wave, control equipment and mobile communication system |
| CN103686826B (en) * | 2012-09-18 | 2016-09-21 | 普天信息技术研究院有限公司 | A kind of acceptance controlling method in carrier aggregation system |
| CN103856312B (en) * | 2012-12-07 | 2017-08-11 | 电信科学技术研究院 | Carrier activation and the method deactivated, equipment |
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