CN102131276B - Method for sending and receiving system information of co-station multiple cells and evolution node base (eNB) - Google Patents
Method for sending and receiving system information of co-station multiple cells and evolution node base (eNB) Download PDFInfo
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- CN102131276B CN102131276B CN2010100340363A CN201010034036A CN102131276B CN 102131276 B CN102131276 B CN 102131276B CN 2010100340363 A CN2010100340363 A CN 2010100340363A CN 201010034036 A CN201010034036 A CN 201010034036A CN 102131276 B CN102131276 B CN 102131276B
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- 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
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Abstract
The invention discloses a method for sending and receiving system information of co-station multiple cells and an evolution node base (eNB). On downlink carriers in the co-station multiple cells, association relationships are established among physical layer resources for bearing system information, the eNB distributes the physical layer resources for bearing the system information on the downlink carriers of each of the co-station multiple cells according to the association relationships; the resource information distributed for each cell is put into the downlink control channel of the corresponding cell; UE (user equipment) selects a cell from the co-station multiple cells and acquires resource information from the downlink control information of the cell; and resources for bearing system information on downlink carriers of each of the co-station multiple cells are determined according to the obtained resource information and the association relationships. According to the invention, the load of the UE is reduced.
Description
Technical field
The present invention relates to transmission technique field, and in particular to the system information method of sending and receiving and evolution base station of co-sited multiple cell, user equipment.
Background technology
Third generation partner program (3GPP, Third Generation Partnership Project) Long Term Evolution (LTE, Long Term Evolution) later release (be referred to as LTE-Advanced) in, many new technologies are introduced, and carrier aggregation technology is also introduced into wherein as the key technology of support more high bandwidth transmission.The general principle of carrier aggregation is by the way that two or more main carriers are condensed together work, to meet higher bandwidth demand.Fig. 1-1 is scene of the system without using carrier aggregation technology, and Fig. 1-2 is the scene that system uses carrier aggregation technology.Introduce after carrier aggregation technology, the carrier number in a base station cell is changed into multiple from 1, so as to bring new challenge for sending and receiving for system information.
Cell system information refers to user resident, cell reselection, initiation and information necessary to reception miscellaneous service in cell.Cell system information is carried by the descending carrier of cell.Cell system information is made up of host system message block and system information block 1-12.After carrier aggregation technology is introduced, multicarrier will bring multiple cell scene, i.e. co-sited multiple cell.These cells suffer from the descending carrier of oneself, and its system information is carried all on respective descending carrier.The system information of these different districts, some are identicals, and some are different.For example primary system information, system information block 1 are that each cell is different with 2, and system information block 3-12 is very possible identical.
Fig. 2 sends and receives flow chart for existing cell system information, as shown in Fig. 2 it is comprised the following steps that：
Step 201：Evolution base station (eNB, Evolution Node Base) is in co-sited multiple cell, and selection one does not configure the cell of system information.
Step 202：ENB distributes the resource for bearing system information on the descending carrier of the cell.
Resource Allocation Formula is determined by scheduler.
Step 203：Positions and quantity of the eNB according to the resource distributed, a binary numeral is calculated using preset algorithm, and the value is referred to as resource indicated value (RIV, Resource Indication Value).
RIV can go out position and the quantity of distributed resource with unique mark, i.e., the position of any resource and quantity can all be mapped to a unique binary number.
Step 204：RIV is put on the down control channel of the cell by eNB, and system information-Radio Network Temporary Identity mark (SI-RNTI is added on the cyclic redundancy check position of the down control channel, System Information-Radio Network Temporary Identification), it is used to indicate the resource shared by system information to identify the down control channel.
Step 205：ENB carrys out bearing system information on the descending carrier of the cell according to the resource distributed.
Step 206：ENB carries out the system information configuration process of other cells of current co-sited multiple cell according to step 201-205 again, until all cells all complete system information configuration.
Step 207：As user equipment (UE, User Equipment) when needing to receive the system information of cell, detect all down control channels of the cell, when having SI-RNTI on the cyclic redundancy check position for detecting down control channel, the RIV in the down control channel is read, being calculated according to the RIV is used for the resource of bearing system information on the descending carrier of the cell.
Step 208：UE receives the system information of the cell on the resource according to the resource calculated.
The shortcoming of the above method is：When UE needs to obtain the system information of multiple cells, need to detect the down control channel of the plurality of cell, then RIV that could be in down control channel is to the system information that each cell is received in different resources, which adds detection number of times of the UE to down control channel, so as to add UE processing load.And, when using carrier aggregation technology, if the channel status on some carrier waves is deteriorated, reliability reduction can cause UE can not correctly parse mask on these carrier waves, so as to cause system information not receive.
The content of the invention
The present invention provides the system information method of sending and receiving and eNB, UE of co-sited multiple cell, to reduce the processing load spent by UE reception system information.
The technical proposal of the invention is realized in this way：
A kind of system information method of sending and receiving of co-sited multiple cell, for each descending carrier in co-sited multiple cell, for setting up incidence relation between the physical layer resources of bearing system information on each descending carrier, this method includes：
Evolution base station eNB distributes the physical layer resources for bearing system information according to the incidence relation on the descending carrier of each cell of co-sited multiple cell；The resource information distributed for each cell is put into the down control channel of respective cell；
User equipment (UE) selects a cell in co-sited multiple cell, and resource information is obtained from the down control channel of the cell；According to the resource information of acquisition and the incidence relation, determine co-sited multiple cell each cell descending carrier on be used for the resource of bearing system information, the system information of each cell is received in identified each resource.
A kind of evolution base station, including：
First module, for each descending carrier in co-sited multiple cell, for setting up incidence relation between the physical layer resources of bearing system information on each descending carrier；
Second module, according to the incidence relation, distributes the physical layer resources for bearing system information on the descending carrier of each cell of co-sited multiple cell；The resource information distributed for each cell is put into the down control channel of respective cell.
A kind of evolution base station, including：
First module, all descending carriers of setting co-sited multiple cell are identical for the corresponding resource indicated value RIV of physical layer resources of bearing system information；
Second module, a preferred cell is selected in co-sited multiple cell, the physical layer resources for bearing system information are distributed on the descending carrier of preferred cell, according to the resource distributed, one RIV is calculated using preset algorithm, the RIV is put into the down control channel of each cell of co-sited multiple cell；Or, RIV set in advance is put into the down control channel of each cell of co-sited multiple cell.
A kind of evolution base station, including：
In first module, setting co-sited multiple cell, in the frequency domain resource of bearing system information on each descending carrier, each frequency domain resource its position on the downstream carriers it is identical；
Second module, a preferred cell is selected in co-sited multiple cell, the physical layer resources for bearing system information are distributed on the descending carrier of preferred cell；To other each cells of co-sited multiple cell, frequency domain resource on the descending carrier of the cell for bearing system information is set in its institute position on the downstream carriers identical with first choice cell, the resource information distributed for each cell is put into the down control channel of respective cell；Or, for each cell of co-sited multiple cell, frequency domain resource on the descending carrier of the cell for bearing system information is set to position with the frequency domain resources of reference resources on descending carrier is referred in its institute position on the downstream carriers identical, the resource information distributed for each cell is put into the down control channel of respective cell.
A kind of UE, the UE includes：
It is used for the incidence relation between the physical layer resources of bearing system information on each descending carrier in first module, record co-sited multiple cell；
Second module, when needing reception system information, a cell is selected in co-sited multiple cell, resource information is obtained from the down control channel of the cell；For the incidence relation between the physical layer resources of bearing system information on each descending carrier in co-sited multiple cell in the resource information of acquisition and the first module, determine co-sited multiple cell each cell descending carrier on be used for bearing system information resource, the system information of each cell is received in identified each resource.
Compared with prior art, for each descending carrier in co-sited multiple cell in the present invention, for setting up incidence relation between the physical layer resources of bearing system information on each descending carrier, such eNB can be each cell distribution physical layer resources according to the incidence relation set up；When UE can also work as the acquisition resource information from any one cell, so that it may the resource distributed for other cells is learnt according to the resource information, so as to reduce the processing load spent by UE reception system information；Meanwhile, also improve the reliability of System Information reception.
Brief description of the drawings
Fig. 1-1 is schematic diagram of a scenario of the system without using carrier aggregation technology；
Fig. 1-2 is the schematic diagram of a scenario that system uses carrier aggregation technology；
Fig. 2 sends and receives flow chart for existing cell system information；
The method of sending and receiving flow chart of cell system information in the co-sited multiple cell that Fig. 3 provides for the present invention；
Fig. 4 is the method for sending and receiving flow chart of cell system information in the co-sited multiple cell that the embodiment of the present invention one is provided；
Fig. 5 is the method for sending and receiving flow chart of cell system information in the co-sited multiple cell that the embodiment of the present invention two is provided；
Fig. 6 is the method for sending and receiving flow chart of cell system information in the co-sited multiple cell that the embodiment of the present invention three is provided；
Fig. 7 is the method for sending and receiving flow chart of cell system information in the co-sited multiple cell that the embodiment of the present invention four is provided；
Cell system information sends and receives system composition figure in the co-sited multiple cell that Fig. 8 provides for the present invention；
The composition figure for the evolution base station that Fig. 9 provides for the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further described in more detail.
The method of sending and receiving flow chart of cell system information in the co-sited multiple cell that Fig. 3 provides for the present invention, as shown in figure 3, it is comprised the following steps that：
Step 300：For each descending carrier in co-sited multiple cell, for setting up incidence relation between the physical layer resources of bearing system information on each descending carrier.
The purpose for setting up incidence relation is in order that obtaining：Resource information for bearing system information from any one descending carrier of co-sited multiple cell, which can deduce, is used for the resource information of bearing system information on other descending carriers.
Here, resource information is often referred to the quantity of physical layer resources and the position of starting resource block.
Step 301：When eNB needs to send system information, according to the incidence relation set up, on the descending carrier of each cell of co-sited multiple cell, the physical layer resources for bearing system information are distributed.
Step 302：The resource information distributed for each cell is put on the down control channel of respective cell by eNB, and identifies the down control channel for indicating the physical layer resources shared by system information.
Step 303：ENB carrys out bearing system information on the descending carrier of each cell according to the resource distributed.
Step 304：When UE needs reception system information, select a cell, detect the down control channel of the cell, when detecting down control channel for indicating the physical layer resources shared by system information, being obtained from the down control channel is used for the resource information of bearing system information on the descending carrier of the cell.
Here, UE can arbitrarily select a cell.It is preferred that the higher cell of a channel reliability can be selected.
Step 305：It is used for the physical layer resources of bearing system information on the incidence relation that UE is set up according to the resource information and step 300 of acquisition, the descending carrier for each cell for obtaining co-sited multiple cell, according to the resource of acquisition, the system information of each cell is received in each resource.
, for the difference for the incidence relation set up between the resource of bearing system information, four specific embodiments are provided below according on each descending carrier of co-sited multiple cell：
Fig. 4 is the method for sending and receiving flow chart of cell system information in the co-sited multiple cell that the embodiment of the present invention one is provided, as shown in figure 4, it is comprised the following steps that：
Step 400：The corresponding RIV of physical layer resources that all descending carriers of eNB setting co-sited multiple cells are used for bearing system information is identical.
Step 401：ENB carries out time synchronized and synchronizing sub-frame to the descending carrier of all cells in co-sited multiple cell.
Synchronizing sub-frame is in order that obtain all cells all sends system information in identical subframe.
Step 402：When needing carrying system information in a subframe, eNB is in co-sited multiple cell, and the minimum cell of selection descending carrier bandwidth is used as preferred cell.
If there is the descending carrier bandwidth of more than two cells minimum, one can be arbitrarily selected in more than two cells as preferred cell；Or, further selected according to Else Rule, for example：The cell for selecting the transmission condition difference between the physical layer resources of descending carrier maximum is used as preferred cell.
Step 403：ENB distributes the physical layer resources for bearing system information on the descending carrier of preferred cell.
Resource Allocation Formula is same as the prior art.
Step 404：ENB calculates a RIV according to the physical layer resources distributed.
RIV computing formula can be as follows：
When down control channel uses form 1a：
If
Otherwise,
Wherein,
When down control channel uses form 1c：
If 
Otherwise,
Wherein,
NRB DLFor the wireless resource block number on descending carrier；LCRBsFor continuous virtual radio resource block length in the physical layer resources for bearing system information；NVRB DLFor the virtual radio resource block number on descending carrier；RBstartFor the position of the starting resource block of the physical layer resources for bearing system information；NRB stepFor the granularity of resource.
Step 405：The RIV is put into the Downlink Control Information (DCI of the down control channel of preferred cell by eNB, Downlink Control Information) in resource block assignments (resource blockassignment) field, and SI-RNTI is added on the cyclic redundancy check position of the down control channel, it is used to indicate the physical layer resources shared by system information to identify the down control channel.
Step 406：ENB carrys out bearing system information on the descending carrier of preferred cell according to the physical layer resources distributed.
Step 407：ENB is in current co-sited multiple cell, optional one do not configure system information cell, according to the RIV values of preferred cell, RIV values physical layer resources represented in the descending carrier of current area are calculated, according to the system information of the resource transmission current area calculated.
Step 408：The RIV is put into the resource block assignments field in the DCI of the down control channel of current area by eNB, and SI-RNTI is added on the cyclic redundancy check position of the down control channel, it is used to indicate the physical layer resources shared by system information to identify the down control channel.
Step 409：ENB carries out the system information configuration process of other cells of current co-sited multiple cell according to step 407-408 again, until all cells in current co-sited multiple cell all complete system information configuration.
Step 410：When UE needs reception system information, a cell is selected, the down control channel of the cell is detected, when having SI-RNTI on the cyclic redundancy check position for detecting down control channel, read the resource block assignments field value of the down control channel, i.e. RIV.
Step 411：UE is calculated according to the RIV is used for the physical layer resources of bearing system information on the descending carrier of each cell of co-sited multiple cell, according to the physical layer resources calculated, the system information of respective cell is received in each resource.
From embodiment illustrated in fig. 4 it can be seen that, the RIV of all cells of co-sited multiple cell is identical, so, when UE obtains RIV from the down control channel of a cell, so that it may obtained being used for the physical layer resources of bearing system information on the descending carrier of all cells according to the RIV.
Fig. 5 is the method for sending and receiving flow chart of cell system information in the co-sited multiple cell that the embodiment of the present invention two is provided, as shown in figure 5, it is comprised the following steps that：
Step 500：ENB is set：In co-sited multiple cell, the time-domain resource on each descending carrier for bearing system information is identical；On each descending carrier for bearing system information frequency domain resource its position on the downstream carriers it is identical.
Position in this step can be absolute position or relative position.Absolute position can be can be on each descending carrier for bearing system information frequency domain resource its numbering on the downstream carriers.
When position is relative position, be used on each descending carrier the frequency domain resource of bearing system information its position on the downstream carriers is identical to be：The first reference point on each descending carrier in the frequency domain resource of bearing system information to its second reference point on the downstream carriers distance it is identical；Or, the first reference point on each descending carrier in the frequency domain resource of bearing system information to its 3rd reference point in reference subband on the downstream carriers distance it is identical.Here, it is with reference to subband：Each descending carrier is divided into more than one subband according to pre-set bandwidths, one of subband is selected as subband is referred to, for example：First subband of selection or last subband are as referring to subband.
Wherein, the first reference point can be that the frequency of its position, the second reference frequency point can be specifically described out in each frequency domain resource can be that the frequency of its position, the 3rd reference point can be specifically described out on each descending carrier can specifically describe out the frequency of its position in the reference subband on descending carrier.
First reference point can be the starting frequency of frequency domain resource, center frequency point, termination frequency, etc.；Second reference point can for the starting frequency of descending carrier, center frequency point, terminate frequency or, to the starting frequency of descending carrier, center frequency point, terminate frequency of the distance of one of frequency for pre-determined distance, etc., here presetting at distance can be determined on the basis of the bandwidth of descending carrier, such as：For the a% (0 ＜ a ＜ 100) of descending carrier bandwidth；3rd reference point can be with reference to the starting frequency of subband, center frequency point, terminate frequency, or, to the starting frequency with reference to subband, center frequency point, to terminate the distance of one of frequency be frequency of pre-determined distance, etc..By the first reference point be frequency domain resource on the downstream carriers starting frequency, the second reference point for the center frequency point of descending carrier exemplified by, now, for in the frequency domain resource of bearing system information on each descending carrier, each frequency domain resource its institute on the downstream carriers originate frequency to its where descending carrier center frequency point distance it is identical, now, when the distance is the half of bandwidth shared by system information, the frequency domain resource is located exactly on the center of its place descending carrier.
Step 501：ENB carries out time synchronized and synchronizing sub-frame to the descending carrier of all cells in co-sited multiple cell.
Step 502：When needing carrying system information in a subframe, eNB is in co-sited multiple cell, and one cell of selection is used as preferred cell.
Here it is possible to arbitrarily one cell of selection is as preferred cell, or, a cell is selected as preferred cell according to preset rules, for example：The cell for selecting descending carrier bandwidth minimum, or the minimum cell of selection descending carrier frequency.
Step 503：ENB distributes the physical layer resources for bearing system information on the descending carrier of preferred cell.
Resource Allocation Formula is same as the prior art.
Step 504：ENB calculates a RIV according to the physical layer resources distributed.
RIV computing formula is identical with step 404.
Step 505：The RIV is put into the resource block assignments field in the DCI of the down control channel of preferred cell by eNB, and SI-RNTI is added on the cyclic redundancy check position of the down control channel, it is used to indicate the physical layer resources shared by system information to identify the down control channel.
Step 506：ENB carrys out bearing system information on the descending carrier of preferred cell according to the resource distributed.
Step 507：ENB in current co-sited multiple cell, optional one do not configure system information cell.
Step 508：Time-domain resource on the descending carrier of current area for bearing system information is set to identical with preferred cell by eNB, will be set on the descending carrier of current area for the position of the frequency domain resource of bearing system information identical with first choice cell.
Step 509：ENB is used for the physical layer resources of bearing system information on the descending carrier according to current area, calculates RIV.
Step 510：The RIV is put into the resource block assignments field in the DCI of the down control channel of current area by eNB, and SI-RNTI is added on the cyclic redundancy check position of the down control channel, it is used to indicate the physical layer resources shared by system information to identify the down control channel.
Step 511：ENB carrys out bearing system information on the descending carrier of current area according to the physical layer resources distributed.
Step 512：ENB carries out the system information configuration process of other cells in current co-sited multiple cell according to step 507-511 again, until all cells in current co-sited multiple cell all complete system information configuration.
Step 513：When UE needs reception system information, a cell is selected, the down control channel of the cell is detected, when having SI-RNTI on the cyclic redundancy check position for detecting down control channel, read the resource block assignments field value of the down control channel, i.e. RIV.
Step 514：UE is calculated according to the RIV is used for the physical layer resources of bearing system information on the descending carrier of the cell, obtained being used for the physical layer resources of bearing system information on the descending carrier of other cells according to the physical layer resources calculated.
Step 515：UE receives the system information of each cell on the descending carrier of each cell in the physical layer resources of bearing system information.
Fig. 6 is the method for sending and receiving flow chart of cell system information in the co-sited multiple cell that the embodiment of the present invention three is provided, as shown in fig. 6, it is comprised the following steps that：
Step 600：The corresponding RIV of physical layer resources that all descending carriers of eNB setting co-sited multiple cells are used for bearing system information is identical, and presets the RIV values.
RIV values set in advance can be determined according to the channel status of the length, the bandwidth of each descending carrier and each cell of system information, as long as disclosure satisfy that system information can be carried on each descending carrier.
Step 601：ENB carries out time synchronized and synchronizing sub-frame to the descending carrier of all cells in co-sited multiple cell.
Step 602：When needing carrying system information in a subframe, eNB in current co-sited multiple cell, optional one do not configure system information cell.
Step 603：ENB calculates RIV values physical layer resources represented in the descending carrier of current area according to RIV values set in advance.
Step 604：ENB carries the system information of current area according to the physical layer resources calculated on the descending carrier of current area.
Step 605：The RIV is put into the resource block assignments field in the DCI of the down control channel of current area by eNB, and SI-RNTI is added on the cyclic redundancy check position of the down control channel, it is used to indicate the physical layer resources shared by system information to identify the down control channel.
Step 606：ENB carries out the system information configuration process of other cells of current co-sited multiple cell according to step 602-605 again, until all cells in current co-sited multiple cell all complete system information configuration.
Step 607：When UE needs reception system information, a cell is selected, the down control channel of the cell is detected, when having SI-RNTI on the cyclic redundancy check position for detecting down control channel, read the resource block assignments field value of the down control channel, i.e. RIV.
Step 608：UE is calculated according to the RIV is used for the physical layer resources of bearing system information on the descending carrier of each cell of co-sited multiple cell, according to the physical layer resources calculated, the system information of respective cell is received in each resource.
Fig. 7 is the method for sending and receiving flow chart of cell system information in the co-sited multiple cell that the embodiment of the present invention four is provided, as shown in fig. 7, it is comprised the following steps that：
Step 700：ENB calculates the RIV of the reference resources in advance at one with reference to one reference resources of setting on descending carrier；And setting：In co-sited multiple cell, the time-domain resource on each descending carrier for bearing system information is identical with the time-domain resource of the reference resources；Frequency domain resource on each descending carrier for bearing system information is identical in position of the frequency domain resource on descending carrier is referred to of its institute position on the downstream carriers and reference resources.
Here, it can be determined with reference to descending carrier and reference resources according to the length, the bandwidth of each descending carrier of co-sited multiple cell, each cell channel state of system information, as long as disclosure satisfy that system information can be carried on each descending carrier of co-sited multiple cell.
Position in this step can be absolute position or relative position.Absolute position can be can be on each descending carrier for bearing system information frequency domain resource its numbering on the downstream carriers.
When position is relative position, it is used for that position of frequency domain resource of the frequency domain resource of bearing system information in its position of institute on the downstream carriers and reference resources on descending carrier is referred to is identical to be on each descending carrier：The first reference point on each descending carrier in the frequency domain resource of bearing system information is identical to the distance for referring to the second reference point on descending carrier with the first reference point in the frequency domain resource of reference resources to its institute's distance of preset second reference point on the downstream carriers；Or, the first reference point on each descending carrier in the frequency domain resource of bearing system information to its 3rd reference point in reference subband on the downstream carriers distance it is identical.Here, it is with reference to subband：Each descending carrier is divided into more than one subband according to pre-set bandwidths, one of subband is selected as subband is referred to, for example：First subband of selection or last subband are as referring to subband..
Wherein, the first reference point can be that the frequency of its position, the second reference frequency point can be specifically described out in each frequency domain resource can be that the frequency of its position, the 3rd reference point can be specifically described out on each descending carrier can specifically describe out the frequency of its position in the reference subband on descending carrier.First reference point can be the starting frequency of frequency domain resource, center frequency point, termination frequency, etc.；Second reference point can be the starting frequency of descending carrier, center frequency point, termination frequency, or, distance to one of the starting frequency of descending carrier, center frequency point, termination frequency is frequency of pre-determined distance etc., here presetting at distance can be determined on the basis of the bandwidth of descending carrier, such as：For the a% (0 ＜ a ＜ 100) of descending carrier bandwidth；3rd reference point can be with reference to the starting frequency of subband, center frequency point, terminate frequency, or, to the starting frequency with reference to subband, center frequency point, to terminate the distance of one of frequency be frequency of pre-determined distance etc..By the first reference point be frequency domain resource on the downstream carriers starting frequency, the second reference point for the center frequency point of descending carrier exemplified by, now, for in the frequency domain resource of bearing system information on each descending carrier, the distance for originating frequency to the center frequency point of reference descending carrier of distance and the reference resources of each frequency domain resource center frequency point of descending carrier where its institute starting frequency to its on the downstream carriers on reference to descending carrier is identical.
Step 701：ENB carries out time synchronized and synchronizing sub-frame to the descending carrier of all cells in co-sited multiple cell.
Step 702：When needing carrying system information in a subframe, eNB in co-sited multiple cell, optional one do not configure system information cell.
Step 703：ENB by the descending carrier of current area for bearing system information time-domain resource be set to it is identical with reference resources, will on the descending carrier of current area for bearing system information frequency domain resource position be set to it is identical with reference resources.
Step 704：ENB calculates a RIV according to the physical layer resources distributed by current area.
Step 705：The RIV is put into the resource block assignments field in the DCI of the down control channel of current area by eNB, and SI-RNTI is added on the cyclic redundancy check position of the down control channel, it is used to indicate the physical layer resources shared by system information to identify the down control channel.
Step 706：ENB carrys out bearing system information on the descending carrier of current area according to the physical layer resources distributed.
Step 707：ENB carries out the system information configuration process of other cells in current co-sited multiple cell according to step 702-706 again, until all cells in current co-sited multiple cell all complete system information configuration.
Step 708：When UE needs reception system information, a cell is selected, the down control channel of the cell is detected, when having SI-RNTI on the cyclic redundancy check position for detecting down control channel, read the resource block assignments field value of the down control channel, i.e. RIV.
Step 709：UE is calculated according to the RIV is used for the physical layer resources of bearing system information on the descending carrier of the cell, obtained being used for the physical layer resources of bearing system information on the descending carrier of other cells according to the physical layer resources calculated.
Step 710：UE receives the system information of each cell on the descending carrier of each cell in the physical layer resources of bearing system information.
The system information for the co-sited multiple cell that Fig. 8 provides for the present invention sends and receives system composition figure, as shown in figure 8, it mainly includes：ENB and UE, wherein：
eNB：For each descending carrier in co-sited multiple cell, for setting up incidence relation between the physical layer resources of bearing system information on each descending carrier；When needing to send system information, according to the incidence relation, the physical layer resources for bearing system information are distributed on the descending carrier of each cell of co-sited multiple cell；The resource information distributed for each cell is put into the down control channel of respective cell；Bearing system information is sent to UE in the resource distributed for each cell.
UE：Record the incidence relation being used on each descending carrier in co-sited multiple cell between the physical layer resources of bearing system information；When needing reception system information, a cell is selected in co-sited multiple cell, resource information is obtained from the down control channel of the cell；According to the resource information of acquisition and the incidence relation, determine co-sited multiple cell each cell descending carrier on be used for the resource of bearing system information, the system information of each cell is received in identified each resource.
The composition figure for the eNB that Fig. 9 provides for the present invention, as shown in figure 9, it mainly includes：First module and the second module, wherein：
First module：For each descending carrier in co-sited multiple cell, for setting up incidence relation between the physical layer resources of bearing system information on each descending carrier.
Second module：When needing to send system information, according to the incidence relation in the first module, the physical layer resources for bearing system information are distributed on the descending carrier of each cell of co-sited multiple cell；The resource information distributed for each cell is put into the down control channel of respective cell；Bearing system information is sent to UE in the physical layer resources distributed for each cell.
ENB may also include：3rd module, time synchronized and synchronizing sub-frame are carried out for the descending carrier to all cells in co-sited multiple cell.
The composition for the eNB that the embodiment of the present invention one given below is provided, it mainly includes：First module and the second module, wherein：
First module：Set on each descending carrier in co-sited multiple cell for bearing system information physical layer resources between incidence relation as：The corresponding RIV of physical layer resources that all descending carriers of co-sited multiple cell are used for bearing system information is identical.
Second module：When needing to send system information, a preferred cell is selected in co-sited multiple cell, the physical layer resources for bearing system information are distributed on the descending carrier of preferred cell, according to the physical layer resources distributed, one RIV is calculated using preset algorithm, according to the incidence relation in the first module, the RIV is put into the down control channel of each cell of co-sited multiple cell；Or, RIV set in advance is put into the down control channel of each cell of co-sited multiple cell；Bearing system information is sent to UE in the physical layer resources distributed for each cell.
Wherein, the second module may be selected the minimum cell of a descending carrier bandwidth and be used as preferred cell.
The composition for the eNB that the embodiment of the present invention two given below is provided, it mainly includes：First module and the second module, wherein：
First module：Set on each descending carrier in co-sited multiple cell for bearing system information physical layer resources between incidence relation as：In co-sited multiple cell, on each descending carrier for bearing system information frequency domain resource its position on the downstream carriers it is identical.
Second module：When needing to send system information, a preferred cell is selected in co-sited multiple cell, the physical layer resources for bearing system information are distributed on the descending carrier of preferred cell；To other each cells of co-sited multiple cell, frequency domain resource on the descending carrier of the cell for bearing system information is set in its institute position on the downstream carriers identical with first choice cell, the resource information distributed for each cell is put into the down control channel of respective cell；Or, for each cell of co-sited multiple cell, the frequency domain resource on the descending carrier of the cell for bearing system information is set to position with the frequency domain resources of reference resources on descending carrier is referred in its position of institute on the downstream carriers identical；Bearing system information is sent to UE in the physical layer resources distributed for each cell.
Wherein, the second module arbitrarily one cell of selection is used as preferred cell；Or, the minimum cell of one descending carrier bandwidth of selection is used as preferred cell；Or, the minimum cell of one descending carrier frequency of selection is used as preferred cell.
UE provided in an embodiment of the present invention given below composition, the UE mainly includes：First module and the second module, wherein：
First module：Record the incidence relation being used on each descending carrier in co-sited multiple cell between the physical layer resources of bearing system information.
Second module：When needing reception system information, a cell is selected in co-sited multiple cell, resource information is obtained from the down control channel of the cell；For the incidence relation between the physical layer resources of bearing system information on each descending carrier in co-sited multiple cell in the resource information of acquisition and the first module, determine co-sited multiple cell each cell descending carrier on be used for bearing system information resource, the system information of each cell is received in identified each resource.
It should be noted that in actual applications, for each descending carrier of co-sited multiple cell, the time-domain resource for bearing system information distributed on each descending carrier can also be different, now, avoid the need for carrying out time synchronized and synchronizing sub-frame to each cell.
The process and embodiment of the method for the present invention is the foregoing is only, is not intended to limit the invention, any modifications, equivalent substitutions and improvements done within the spirit and principles of the invention etc. should be included within the scope of the present invention.
Claims (18)
1. a kind of system information method of sending and receiving of co-sited multiple cell, it is characterised in that for each descending carrier in co-sited multiple cell, for setting up incidence relation between the physical layer resources of bearing system information on each descending carrier, this method includes：
Evolution base station eNB distributes the physical layer resources for bearing system information according to the incidence relation on the descending carrier of each cell of co-sited multiple cell；The resource information distributed for each cell is put into the down control channel of respective cell；
User equipment (UE) selects a cell in co-sited multiple cell, and resource information is obtained from the down control channel of the cell；According to the resource information of acquisition and the incidence relation, determine co-sited multiple cell each cell descending carrier on be used for the resource of bearing system information, the system information of each cell is received in identified each resource；
It is described to be for setting up incidence relation between the physical layer resources of bearing system information on each descending carrier：All descending carriers for setting co-sited multiple cell are identical for the corresponding resource indicated value RIV of physical layer resources of bearing system information, Huo Zhewei：Set in co-sited multiple cell, on each descending carrier for bearing system information frequency domain resource its position on the downstream carriers it is identical.
2. the method as described in claim 1, it is characterised in that when the corresponding resource indicated value RIV of physical layer resources that all descending carriers for setting co-sited multiple cell are used for bearing system information is identical,
The RIV to be set in advance,
The eNB is according to the incidence relation, and distributed on the descending carrier of each cell of co-sited multiple cell includes for the physical layer resources of bearing system information：
ENB is used for the physical layer resources of bearing system information according to RIV set in advance on the descending carrier for each cell for calculating co-sited multiple cell.
3. the method as described in claim 1, it is characterised in that when the corresponding resource indicated value RIV of physical layer resources that all descending carriers for setting co-sited multiple cell are used for bearing system information is identical,
It is described according to the incidence relation, distributed on the descending carrier of each cell of co-sited multiple cell includes for the physical layer resources of bearing system information：
In each cell of co-sited multiple cell, a preferred cell is selected, the physical layer resources for bearing system information are distributed on the descending carrier of preferred cell, according to the physical layer resources distributed, a RIV is calculated using preset algorithm；For other each cells in addition to preferred cell, according to the corresponding RIV of preferred cell, the physical layer resources for bearing system information are distributed on the descending carrier of the cell；
It is described the resource information distributed for each cell is put into respective cell down control channel be：The corresponding RIV of preferred cell is put into the down control channel of all cells.
4. method as claimed in claim 3, it is characterised in that the preferred cell of selection one includes：The minimum cell of one descending carrier bandwidth of selection is used as preferred cell.
5. the method as described in claim 1, it is characterised in that when in setting co-sited multiple cell, on each descending carrier for bearing system information frequency domain resource its position on the downstream carriers it is identical when,
In the setting co-sited multiple cell, on each descending carrier for bearing system information frequency domain resource its position on the downstream carriers be all mutually：
Presetting one, to be used for position of frequency domain resource of the frequency domain resource of bearing system information in its position of institute on the downstream carriers and the reference resources on descending carrier is referred on reference to the reference resources on descending carrier, and each descending carrier of setting identical.
6. the method as described in claim 1, it is characterised in that when in setting co-sited multiple cell, on each descending carrier for bearing system information frequency domain resource its position on the downstream carriers it is identical when,
It is described according to the incidence relation, distributed on the descending carrier of each cell of co-sited multiple cell includes for the physical layer resources of bearing system information：
In each cell of co-sited multiple cell, a preferred cell is selected, the physical layer resources for bearing system information are distributed on the descending carrier of preferred cell, according to the physical layer resources distributed, a RIV is calculated using preset algorithm；For other each cells in addition to preferred cell, according to the RIV of preferred cell, calculate the physical layer resources for bearing system information distributed on the descending carrier of preferred cell, the position of the frequency domain resource for bearing system information on the descending carrier of current area is set to identical with preferred cell, according to the physical layer resources for bearing system information on the descending carrier of current area, the corresponding RIV in current area is calculated；
It is described the resource information distributed for each cell is put into respective cell down control channel be：The corresponding RIV of each cell is put into the down control channel of respective cell.
7. the method as described in claim 1,5 or 6, it is characterised in that when in setting co-sited multiple cell, on each descending carrier for bearing system information frequency domain resource its position on the downstream carriers it is identical when,
The position is absolute position or relative position.
8. method as claimed in claim 7, it is characterised in that the absolute position for frequency domain resource its numbering on the downstream carriers.
9. method as claimed in claim 7, it is characterised in that when the position is relative position,
On each descending carrier for bearing system information frequency domain resource its position on the downstream carriers be all mutually：
Preset first reference point on each descending carrier in the frequency domain resource of bearing system information to its preset second reference point on the downstream carriers distance it is identical.
10. method as claimed in claim 9, it is characterised in that first reference point is：The starting frequency or center frequency point of frequency domain resource terminate frequency.
11. method as claimed in claim 9, it is characterised in that second reference point is：The starting frequency of descending carrier, or be：The center frequency point of descending carrier, or be：The termination frequency of descending carrier, or be：To the starting frequency of descending carrier, center frequency point, terminate frequency of the distance of one of frequency for pre-determined distance.
12. method as claimed in claim 7, it is characterised in that when the position is relative position,
On each descending carrier for bearing system information frequency domain resource its position on the downstream carriers be all mutually：
Preset first reference point on each descending carrier in the frequency domain resource of bearing system information to its preset reference subband on the downstream carriers the distance for presetting the 3rd reference point it is identical.
13. method as claimed in claim 12, it is characterised in that the 3rd reference point is：The starting frequency of preset reference subband, or be：With reference to the center frequency point of subband, or it is：With reference to the termination frequency of subband, or it is：To the starting frequency with reference to subband, center frequency point, terminate frequency of the distance of one of frequency for pre-determined distance.
14. the method as described in claim 1, it is characterised in that the eNB selects to further comprise before a preferred cell in co-sited multiple cell：
ENB carries out time synchronized and synchronizing sub-frame to the descending carrier of all cells in co-sited multiple cell.
15. a kind of evolution base station, it is characterised in that including：
First module, all descending carriers of setting co-sited multiple cell are identical for the corresponding resource indicated value RIV of physical layer resources of bearing system information；
Second module, a preferred cell is selected in co-sited multiple cell, the physical layer resources for bearing system information are distributed on the descending carrier of preferred cell, according to the resource distributed, one RIV is calculated using preset algorithm, the RIV is put into the down control channel of each cell of co-sited multiple cell；Or, RIV set in advance is put into the down control channel of each cell of co-sited multiple cell.
16. base station as claimed in claim 15, it is characterised in that the cell that second module selects a descending carrier bandwidth minimum is used as preferred cell.
17. a kind of evolution base station, it is characterised in that including：
In first module, setting co-sited multiple cell, in the frequency domain resource of bearing system information on each descending carrier, each frequency domain resource its position on the downstream carriers it is identical；
Second module, a preferred cell is selected in co-sited multiple cell, the physical layer resources for bearing system information are distributed on the descending carrier of preferred cell；To other each cells of co-sited multiple cell, frequency domain resource on the descending carrier of the cell for bearing system information is set in its institute position on the downstream carriers identical with first choice cell, the resource information distributed for each cell is put into the down control channel of respective cell；Or, for each cell of co-sited multiple cell, frequency domain resource on the descending carrier of the cell for bearing system information is set to position with the frequency domain resources of reference resources on descending carrier is referred in its institute position on the downstream carriers identical, the resource information distributed for each cell is put into the down control channel of respective cell.
18. base station as claimed in claim 17, it is characterised in that second module arbitrarily one cell of selection is used as preferred cell；
Or, the minimum cell of one descending carrier bandwidth of selection is used as preferred cell；
Or, the minimum cell of one descending carrier frequency of selection is used as preferred cell.
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| WO2013166721A1 (en) | 2012-05-11 | 2013-11-14 | 华为技术有限公司 | Carrier selection method and device |
| CN103841645B (en) * | 2012-11-23 | 2017-03-29 | 普天信息技术研究院有限公司 | A kind of method that user equipment is distinguished in wireless communication system |
| CN104602226A (en) * | 2013-10-31 | 2015-05-06 | 中兴通讯股份有限公司 | Methods and devices for transmitting and receiving system information |
| AU2016406527B2 (en) * | 2016-05-12 | 2021-07-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | System information transmission method, base station, and terminal |
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