CN101742707A - Method for saving energy of network in LTE system - Google Patents
Method for saving energy of network in LTE system Download PDFInfo
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- CN101742707A CN101742707A CN200810227222A CN200810227222A CN101742707A CN 101742707 A CN101742707 A CN 101742707A CN 200810227222 A CN200810227222 A CN 200810227222A CN 200810227222 A CN200810227222 A CN 200810227222A CN 101742707 A CN101742707 A CN 101742707A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a method for saving the energy of a network in a long term evolution mobile communication system and solving the technical problem that the network can not recover from an energy-saving state to a working state in time according to network capacity conditions under an environment of the traditional LTE ad hoc network. In the invention, a certain cell in the energy-saving state can notify a neighbour cell that the cell is in the energy-saving state through an expanded X2 interface message; and when the neighbour cell generates congestion or overload, the neighbour cell notifies the cell in the energy-saving state through an newly increased energy-saving recovery indication message or an expanded X2 interface load indication message. By adopting the method, the cell in the energy-saving state can carry out energy-saving recovery operation in time according to the congestion or overload state of the peripheral neighbour cell when the neighbour cell generates the congestion or the overload so as to ensure network coverage and meet the requirements of network capacity, and the technical effects of meeting the energy-saving requirements of operators without influencing network quality are achieved.
Description
Technical field
The present invention relates to the radio honeycomb mobile communication system, relate in particular to the method for network energy-saving in a kind of Long Term Evolution (LTE) mobile communication system.
Background technology
Among the Open Standard version 3 6300-800 of 3GPP, LTE (Long Term Evolution is described, Long Term Evolution) network is by E-UTRAN (Evolved Universal Terrestrial Radio Access Network, the general continental rise wireless access network of evolution) base station eNB (Evolved NodeB) and evolution packet switching center EPC (Evolved Packet Core) form, the network flattening.Wherein EUTRAN comprises the set of the eNB that is connected by the S1 interface with EPC, can connect by X2 interface between the eNB.S1, X2 are logic interfacing.An EPC can manage one or more eNB, and an eNB also can be controlled by a plurality of EPC, and an eNB can manage one or more sub-districts.
SON (Self-Organized Network, MANET) is a kind of technology of carrying out network configuration and optimization automatically.The characteristics of this technology are the self-configuring self-optimizings, this technology is used in LTE and is made that LTE base station (eNB) can be according to the automatic configuration network parameter of certain measurement, and carry out Automatic Optimal according to network change, thus keep the network performance optimum, save lot of manpower and material resources simultaneously.
In self-optimizing, it is exactly energy-conservation that a very important demand is arranged and interference reduces, and briefly, the operation by the sub-district is opened and closed under the situation that does not influence whole network operation exactly reduces presence of intercell interference and reaches purpose of energy saving.After closing the sub-district, if untimely recovery can cause the minimizing of network capacity.Cover such as sub-district in the working region, need good network to cover and higher capacity in the time of daytime, and time the evening, if the working region does not have to go back under user or the user situation seldom the same keep higher capacity and good network covering with daytime, will certainly cause bigger energy waste.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of LTE system lower network method for saving energy, be used to solve existing LTE MANET environment lower network can not return to operating state timely according to the network capacity situation from power save mode technical problem, for achieving the above object, technical solution of the present invention is achieved in that
A kind of LTE system lower network method for saving energy, step is as follows:
A, enter power save mode this adjacent cells of cells of certain cell notification its enter power save mode;
B, take place congested or during overload, this generations adjacent sub-district congested or that transship sends energy-conservation recovery Indication message to described certain sub-district that enters power save mode when certain adjacent sub-district of described certain sub-district that enters power save mode;
C, described certain sub-district that enters power save mode return to operating state according to described energy-conservation recovery Indication message.
Further, described certain sub-district that enters power save mode can by dual mode notify adjacent sub-district its enter power save mode, a kind of is to be directly passed to its adjacent sub-district by the X2 interface message of expanding, another kind is to pass through adjacent sub-district by the S1 interface message by MME (Mobility Management Entity, Mobility Management Entity).
Further, the X2 interface message of described expansion is meant that the X2 interface of expansion sets up request message (X2SETUP REQUEST MESSAGE), adds cell status information in the service cell information in this message and is used for sign and whether is in power save mode.
Further, the X2 interface message of described expansion is meant that the X2 interface of expansion sets up response message (X2SETUP RESPONSE MESSAGE), adds cell status information in the service cell information in this message and is used for sign and whether is in power save mode.
Further, the X2 interface message of described expansion is meant the X2 interface base station configuration updating information (ENB CONFIGURATION UPDATE MESSAGE) of expansion, adds cell status information in the service cell information in this message and is used for identifying whether be in power save mode.
Further, described energy-conservation recovery Indication message sends to described certain sub-district that enters power save mode by X2 interface, perhaps sends to MME by the S1 interface, passes through described certain sub-district that enters power save mode through MME again;
Further, described energy-conservation recovery Indication message comprises target cell information and energy-conservation recovery indication information; Described target cell information is used to identify Target cell.Described energy-conservation recovery indication information is used to identify state or degree congested or overload, or the recovery that is used to indicate Target cell to carry out is moved.
Described energy-conservation recovery indication information can be used for identifying state or degree congested or overload, an available texture field, in field, identify up and descending congested and load condition or degree respectively, message structure can be as shown in table 1 below, wherein exist situation field hurdle to represent whether cell is essential, the M representative is essential to be existed, and the O representative is optional:
The energy-conservation recovery indication message structure of table 1 example 1
| The cell title | There is situation | Cell type and reference information |
| -type of message | ??M | |
| -Target cell Global ID | ??M | The unique identifier in sub-district |
| -small area jam/overload messages | The state or the degree of whether congested or overload | |
| -uplink congestion/load condition | ??M/O | |
| -downlink congestion/load condition | ??M/O |
The recovery action that described energy-conservation recovery indication information can be used for should carrying out the indicating target sub-district, as example open carrier frequency, recover the back of waiting for a period of time, need the transmitting power size recovered etc., message structure can be as shown in the table:
The energy-conservation recovery indication message structure of table 2 example 2
| The cell title | There is situation | Cell type and reference information |
| -type of message | ??M | |
| -Target cell Global ID | ??M | The unique identifier in sub-district |
| -energy-conservation recovery indication | Be used to refer to and recover action |
Further, the energy-conservation recovery Indication message that described generation certain adjacent sub-district congested or overload sends to described certain sub-district that enters power save mode is meant the load Indication message on the X2 interface of expansion, energy-conservation recovery indication information is included in the message structure of this expansion, and the X2 interface of expansion load Indication message is as shown in the table:
The load Indication message of table 3 expansion
| The cell title | There is situation | Cell type and reference information |
| -type of message | ?M | |
| -cell information | 1 permission in the base station | The largest cell that allows in the base station is individual |
| The largest cell number | Number is 256 | |
| -sub-district ID | ??M | The unique identifier in sub-district |
| -indication of cell uplink interference overload | ??O | Be used to refer to and recover action |
| -the cell uplink interfere information | ??M | |
| -the cell downlink power information | ??M | |
| -energy-conservation recovery indication information | ||
| -exist and indicate | ??M/O | Available BOOL variable represents that TRUE represents to comprise indication information, and the FALSE sign does not comprise indication information |
| -Target cell ID | ??C | The unique identifier in sub-district is designated as TRUE if exist, and then this cell exists |
Further, whether the sub-district allows to use energy saver mode, can dispose by BTS management according to operator's demand and realize.
Further, after energy-conservation recovery Indication message is handled in described certain sub-district that enters power save mode, send certain adjacent sub-district that processing response message is congested to described generation or transship,, see the following form shown in 4 if be energy-conservation response success message successfully; If failure sees the following form shown in 5 for energy-conservation response failed message, can comprise failure cause and stand-by period in the failed message.
Table 4 processing response message examples 1
| The cell title | There is situation | Cell type and reference information |
| -type of message | ??M |
Table 5 processing response message examples 2
| The cell title | There is situation | Cell type and reference information |
| -type of message | ??M | |
| -failure cause | ??M | Energy-conservation recovery Indication message is handled failure cause |
| -the stand-by period | ??O | Again initiate the time that energy-conservation recovery Indication message need be waited for after handling failure |
Further, if describedly enter certain sub-district of power save mode, then by the notice of minizone interacting message realization power save mode and the recovery operation of operating state in the base station with described generation is congested or certain adjacent sub-district of overload belongs to same base station.
The present invention is by the interacting message between the base station, make the sub-district that is in power save mode to carry out power-save operation dynamically according to network load condition, as entering power save mode when setting thresholding automatically in the subzone network load, and when in adjacent sub-district congested or overload taking place in time according to around the congested or overload of adjacent area carry out energy-conservation recovery operation, guarantee the network coverage, satisfy the network capacity demand, thereby reach the technique effect that does not influence network quality when meeting the energy-conservation demand of operator.
Description of drawings
Fig. 1 is specific embodiment one a flow process schematic diagram;
Fig. 2 is specific embodiment two flow process schematic diagrames;
Fig. 3 is specific embodiment three schematic flow sheets.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
The present invention's first specific embodiment such as Fig. 1 comprise base station 1, base station 2 in the network, sub-district A belongs to base station 1, and sub-district B belongs to base station 2, and sub-district A and sub-district B be neighboring BS relationship, and concrete steps are as follows:
1, sub-district A, the equal operate as normal of sub-district B, and exist X2 to connect between base station 1 and the base station 2;
2, sub-district A is according to energy-conservation demand, when satisfy energy-conservation close condition after, reduce to a certain degree such as number of users in the current area, sub-district A enters energy saver mode (closing as cell carrier frequencies), and adjacent area around giving by the X2 interface message informing of expansion, comprise sub-district B;
3, enter into congested/overload as sub-district B, sub-district B sends energy-conservation recovery Indication message for sub-district A by X2 interface, the notifying cell A state of resuming work.
4, sub-district A carries out this locality processing after receiving energy-conservation recovery Indication message, and A reworks such as the sub-district, opens cell carrier frequencies, recovers cell transmit power.
The present invention's second specific embodiment as shown in Figure 2, the specific implementation step is as follows:
1, sub-district A, the equal operate as normal of sub-district B;
2, sub-district A is according to energy-conservation demand, when satisfy energy-conservation close condition after, reduce to a certain degree such as number of users in the current area, sub-district A enters energy saver mode (closing as cell carrier frequencies), and is notified to adjacent area on every side, comprises sub-district B;
3, enter into congested/overload as sub-district B, the load Indication message of sub-district B expansion X2 interface comprises energy-conservation recovery indication information in this message, sends the overload Indication message for sub-district A by X2 interface.
4, after sub-district A receives the overload Indication message, rework,, recover cell transmit power such as opening cell carrier frequencies according to the energy-conservation recovery indication information that the inside comprises.
The present invention's the 3rd specific embodiment as shown in Figure 3, the specific implementation step is as follows:
1, sub-district A, the equal operate as normal of sub-district B, and do not set up the X2 connection between base station 1 and the base station 2;
2, sub-district A is according to energy-conservation demand, when satisfy energy-conservation close condition after, for example number of users reduces to a certain degree in the current area, sub-district A enters energy saver mode (for example cell carrier frequencies is closed), and is notified to adjacent area on every side, comprises sub-district B;
3, enter into congested/overload as sub-district B, sub-district B sends energy-conservation recovery Indication message by the S1 interface to MME;
4, MME receives energy-conservation recovery Indication message, and this message is passed through sub-district A.
5, sub-district A carries out this locality processing after receiving energy-conservation recovery Indication message, and for example sub-district A reworks, and opens cell carrier frequencies, recovers cell transmit power.
In the specific embodiment of the invention, after sub-district A handles energy-conservation recovery Indication message, can send processing response message, if be energy-conservation response success message successfully, if failure is energy-conservation response failed message to sub-district B.Whether the sub-district allows to use energy saver mode, can dispose by BTS management according to operator's demand and realize.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (8)
1. a LTE system lower network method for saving energy is characterized in that, comprising:
Enter power save mode its adjacent sub-district of certain cell notification its enter power save mode;
When described certain adjacent sub-district that enters certain sub-district of power save mode took place congested or transships, this generation adjacent sub-district congested or overload sent energy-conservation recovery Indication message to described certain sub-district that enters power save mode;
Recovery operation is carried out according to described energy-conservation recovery Indication message in described certain sub-district that enters power save mode.
2. method according to claim 1 is characterized in that, it enters power save mode its adjacent sub-district of X2 interface message informing by expansion, described certain sub-district that enters power save mode.
3. method according to claim 2 is characterized in that, the X2 interface message of described expansion is meant that the X2 interface of expansion sets up request message, or X2 interface sets up response message, or the X2 interface base station configuration updating information.
4. method according to claim 1 is characterized in that, described energy-conservation recovery Indication message sends by X2 interface.
5. method according to claim 4 is characterized in that, described energy-conservation recovery Indication message is to realize by the load Indication message on the X2 interface of expansion.
6. method according to claim 1, it is characterized in that, described certain sub-district that enters power save mode by the S1 interface notify its adjacent sub-district its enter power save mode, correspondingly, described energy-conservation recovery Indication message also passes through described certain sub-district that enters power save mode by the S1 interface by Mobility Management Entity.
7. according to claim 1,4 or 6 any described methods of claim, it is characterized in that described energy-conservation recovery Indication message comprises target cell information and energy-conservation recovery indication information; Described target cell information is used to identify Target cell, and described energy-conservation recovery indication information is used to identify state or degree congested or overload, or the recovery that is used to indicate Target cell to carry out is moved.
8. method according to claim 1, it is characterized in that, after energy-conservation recovery Indication message is handled in described certain sub-district that enters power save mode, send certain adjacent sub-district that processing response message is congested to described generation or transship, be used for the result and the information relevant of feedback processing with the result.
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| WO2012171357A1 (en) * | 2011-06-16 | 2012-12-20 | 中兴通讯股份有限公司 | Energy conservation state notification method and evolved nodeb |
| WO2012103718A1 (en) * | 2011-06-28 | 2012-08-09 | 华为技术有限公司 | Method and network device for network energy saving |
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