CN104735680A - High-density micro-cell deployment method and system - Google Patents
High-density micro-cell deployment method and system Download PDFInfo
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- CN104735680A CN104735680A CN201310718910.9A CN201310718910A CN104735680A CN 104735680 A CN104735680 A CN 104735680A CN 201310718910 A CN201310718910 A CN 201310718910A CN 104735680 A CN104735680 A CN 104735680A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
Abstract
The invention discloses a high-density micro-cell deployment method and system and relates to the field of wireless communication. The method comprises the steps that high-density deployed micro-cells are divided into micro-cell clusters, wherein a cluster ID is configured for each cluster, and a micro-cell ID is configured for each micro-cell in each cluster; all small base stations in the same cluster send a first message on the same time-frequency resource, and scrambling is conducted with the cluster IDs, wherein the first message contains at least one of a synchronous signal, a cluster public reference signal, a broadcast message, a paging message and a random access response; each small base station in the same cluster sends a second message independently, and scrambling is conducted with the micro-cell IDs, wherein the second message contains at least one of a reference signal used for wireless resource management measurement, a demodulation reference signal, a control channel message and a data channel message. In this way, the method and system solve the problem of control signal interference between cells in the same cluster, the reliability of a control signal is improved, and a user can find micro-cells more effectively.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of high density picocell deployment method and system.
Background technology
Along with the fast development of intelligent terminal and mobile Internet, mobile data services amount is also in rapid growth.Report according to International Telecommunication Association shows, and from 2010 to 2015, global mobile data services amount will have the growth of 15 to 30 times.The surge of mobile data services amount, will cause network capacity to become bottleneck gradually, and bring huge challenge to operator.In order to meet the demand of growing data traffic, layering networking, disposing Microcell is a kind of important and effective technological means.It is one of important problem that 3GPP Rel-12 proposes that Microcell strengthens.Real network for the distribution situation of business, needs to consider low-density picocell deployment and high density picocell deployment in disposing simultaneously.
Fig. 1 is the schematic diagram of low-density picocell deployment and high density picocell deployment.As shown in Figure 1, the Microcell of low-density picocell deployment such as reference left side macrocell and middle deployment thereof, the Microcell of high density picocell deployment such as reference right side macrocell and below macrocell and middle deployment thereof.
High density picocell deployment can be with the problem of serving.Such as, when presence of intercell interference is too strong, user will can't find Microcell or can only find the Microcell of little number, and therefore the how more effective discovery Microcell of user just becomes a problem.Again such as, under high density picocell deployment, how to solve the interference problem of control signal.Again such as, how to solve mobile management problem, comprise and how to avoid the user of idle condition between Microcell, carry out community selection and cell reselection frequently, how to avoid the user of connection status to switch frequently between Microcell, how to reduce handover delay etc.
For high density Microcell, in prior art, there is several deployment scheme:
Method one, each Microcell uses independently Microcell mark to dispose.The program has problems in effective discovery, mobile management etc. of Microcell.Be mainly manifested in: when picocell deployment very dense, presence of intercell interference is comparatively serious, and now user detectable Microcell number is little.When the user being in idle condition moves between Microcell, need to carry out cell reselection frequently.
Method two, each Microcell uses identical Microcell mark, uses spaced antenna.The program, owing to adopting single cell deployment, loses cell splitting gain, cannot meet the demand of growing data traffic, and control signal capacity constraint, be the bottleneck that restriction improves frequency spectrum utilization rate.
Method three, each Microcell adopts multi-cell cooperating transmission mechanism, and the program can improve the channel conditions of the data channel of connection status lower limb user, thus improves spectrum efficiency, but the problem of control signal interference cannot be solved, the problem of mobile management cannot be solved.
Summary of the invention
An embodiment of the present invention technical problem to be solved is: solve the problem of control signal interference and effectively pinpointing the problems of Microcell that exist in high density picocell deployment.
The embodiment of the present invention another technical problem to be solved is: the number of times reducing user's cell reselection.
The embodiment of the present invention another technical problem to be solved is: reduce handover delay.
According to an aspect of the embodiment of the present invention, a kind of high density picocell deployment method is proposed, comprise: density is divided into Microcell bunch higher than the very small cell of preset value, each Microcell bunch configuration bunch of mark, each Microcell in Microcell bunch configures a Microcell and identifies; All little base station in same Microcell bunch sends the first information on identical running time-frequency resource, this first information uses bunch mark to carry out scrambling, and this first information comprises at least one in synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response; Each little base station in same Microcell bunch independently sends the second information, this second information uses corresponding Microcell, this little base station mark to carry out scrambling, and this second information comprises at least one in reference signal, demodulated reference signal, control channel information and the data channel information measured as RRM.
In one embodiment, high density picocell deployment method also comprises: the random access guiding that the little base station receives user equipment in Microcell bunch sends; Little base station in Microcell bunch sends accidental access response to subscriber equipment, this accidental access response comprises the Microcell mark set that user can be accessed by, and the signal strength signal intensity that the Microcell mark set that user wherein can be accessed by is received in each little base station according to user uplink signal by baseband processing unit is determined; The scheduled transmission that little base station receives user equipment in Microcell bunch sends, this scheduled transmission comprises the Microcell mark that user selects; Little base station in Microcell bunch sends collision detection to subscriber equipment, and this collision detection comprises the Microcell mark of user's access; Wherein, random access guiding, accidental access response, scheduled transmission and collision detection all use bunch mark to carry out scrambling.
In one embodiment, high density picocell deployment method also comprises: the random access guiding that the little base station receives user equipment in Microcell bunch sends; Little base station in Microcell bunch sends accidental access response to subscriber equipment, this accidental access response comprises the Microcell mark of user's access, and the signal strength signal intensity that the Microcell mark of user's access is wherein received in each little base station according to user uplink signal by baseband processing unit is determined; The scheduled transmission that little base station receives user equipment in Microcell bunch sends; Little base station in Microcell bunch sends collision detection to subscriber equipment; Wherein, random access guiding and accidental access response all use bunch mark to carry out scrambling, and the Microcell mark that scheduled transmission and collision detection all use user to access carries out scrambling.
In one embodiment, high density picocell deployment method also comprises: the first information intercepted by subscriber equipment in an idle state, and uses a bunch mark to carry out descrambling to the first information.
In one embodiment, high density picocell deployment method also comprises: the first information intercepted by subscriber equipment in connected state, and uses a bunch mark to carry out descrambling to the first information; Subscriber equipment in connected state receives at least one in reference signal, demodulated reference signal, downlink control channel information and the downstream data channel information being used as RRM and measuring, and use Microcell mark to carry out descrambling, or, subscriber equipment in connected state sends at least one in ascending control channel information and uplink data channels information, and uses Microcell mark to carry out scrambling.
In one embodiment, high density picocell deployment method also comprises: subscriber equipment carries out Microcell switching according to the first information of intercepting in same Microcell bunch.
According to another aspect of the embodiment of the present invention, a kind of high density picocell deployment system is proposed, comprise: the little base station in Microcell bunch, wherein, density is divided into Microcell bunch higher than the very small cell of preset value, each Microcell bunch configuration bunch of mark, each Microcell in Microcell bunch configures a Microcell and identifies; All little base station in same Microcell bunch, for sending the first information on identical running time-frequency resource, this first information uses bunch mark to carry out scrambling, and this first information comprises at least one in synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response; And, each little base station in same Microcell bunch, also send the second information for independent, this second information uses corresponding Microcell, this little base station mark to carry out scrambling, and this second information comprises at least one in reference signal, demodulated reference signal, control channel information and the data channel information measured as RRM.
In one embodiment, the little base station in Microcell bunch also for: receive the random access guiding that subscriber equipment sends; Accidental access response is sent to subscriber equipment, this accidental access response comprises the Microcell mark set that user can be accessed by, and the signal strength signal intensity that the Microcell mark set that user wherein can be accessed by is received in each little base station according to user uplink signal by baseband processing unit is determined; Receive the scheduled transmission that subscriber equipment sends, this scheduled transmission comprises the Microcell mark that user selects; Send collision detection to subscriber equipment, this collision detection comprises the Microcell mark of user's access; Wherein, random access guiding, accidental access response, scheduled transmission and collision detection all use bunch mark to carry out scrambling.
In one embodiment, the little base station in Microcell bunch also for: receive the random access guiding that subscriber equipment sends; Send accidental access response to subscriber equipment, this accidental access response comprises the Microcell mark of user's access, and the signal strength signal intensity that the Microcell mark of user's access is wherein received in each little base station according to user uplink signal by baseband processing unit is determined; Receive the scheduled transmission that subscriber equipment sends; Collision detection is sent to subscriber equipment; Wherein, random access guiding and accidental access response all use bunch mark to carry out scrambling, and the Microcell mark that scheduled transmission and collision detection all use user to access carries out scrambling.
In one embodiment, this system also comprises: subscriber equipment, for intercepting the first information in an idle state, and uses a bunch mark to carry out descrambling to the first information.
In one embodiment, subscriber equipment, also for intercepting the first information in connected state, and uses a bunch mark to carry out descrambling to the first information; Receive at least one in reference signal, demodulated reference signal, downlink control channel information and the downstream data channel information being used as RRM and measuring, and use Microcell mark to carry out descrambling, or, send at least one in ascending control channel information and uplink data channels information, and use Microcell mark to carry out scrambling.
In one embodiment, subscriber equipment, also for carrying out Microcell switching according to the first information of intercepting in same Microcell bunch.
The embodiment of the present invention at least has the following advantages:
First, the very small cell of high-density deployment is divided into Microcell bunch, each Microcell bunch configuration bunch of mark, each Microcell in bunch configures a Microcell mark, namely Microcell still has the Microcell mark of oneself under bunch association of mark, thus maintain cell splitting gain, overcome the bottleneck of single community spaced antenna control signal capacity constraint; And, all little base station in same Microcell bunch sends the control informations such as synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response on identical running time-frequency resource, solve the interference problem of control signal minizone in same cluster, improve the reliability of control signal, be conducive to the more effective discovery Microcell of user.
Secondly, subscriber equipment under idle condition can listen to the first information such as synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response, therefore the subscriber equipment under idle condition can identify Microcell bunch, and each Microcell in None-identified bunch, therefore, subscriber equipment under idle condition does not need to carry out cell reselection in same Microcell bunch, thus reduces user's cell reselection number of times.
Again, subscriber equipment can according to first information such as the synchronizing signal intercepted, bunch public reference signal, broadcast message, paging information, accidental access responses, Microcell switching is carried out in same Microcell bunch, do not need again to obtain in Target cell synchronously, read system information again is not needed in Target cell yet, therefore, decrease handover delay, improve the success rate of switching.
In addition, the cell ID based on layering also proposed two kinds of Random Access, to make subscriber equipment obtain the Microcell mark of user's access.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of low-density picocell deployment and high density picocell deployment.
Fig. 2 is the high density picocell deployment network diagram that the present invention is based on floored community mark.
Fig. 3 is the schematic flow sheet of a high density picocell deployment method of the present invention embodiment.
Fig. 4 is the network diagram seen of subscriber equipment in an idle state of real network shown in Fig. 2.
Fig. 5 is the network diagram seen of subscriber equipment in connected state of real network shown in Fig. 2.
Fig. 6 is the structural representation of a high density picocell deployment system of the present invention embodiment.
Fig. 7 is the structural representation of another embodiment of high density picocell deployment system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
In order to solve exist in high density picocell deployment control signal interference problem, effectively the pinpointing the problems or mobile management problem of Microcell, the present invention proposes a kind of high density picocell deployment scheme based on floored community mark.Fig. 2 is the high density picocell deployment network diagram that the present invention is based on floored community mark.As shown in Figure 2, the very small cell of high-density deployment is divided into Microcell bunch, such as, Microcell shown in Fig. 2 bunch 1 and Microcell bunches 2, each Microcell bunch configuration bunch of mark (PCCI), each Microcell in bunch configures a Microcell and identifies (PCI).The mark of Microcell and the mark of affiliated bunch thereof can be arranged when the network planning, also can pass through OAM(operation management maintain) be configured.
Fig. 3 is the schematic flow sheet of a high density picocell deployment method of the present invention embodiment.
As shown in Figure 3, the method for the present embodiment comprises the following steps:
Step S301, is divided into Microcell bunch by density higher than the Microcell (i.e. high-density deployment Microcell) of preset value, each Microcell bunch configuration bunch of mark, and each Microcell in Microcell bunch configures a Microcell and identifies.
Step S302, all little base station in same Microcell bunch sends the first information on identical running time-frequency resource, this first information uses bunch mark to carry out scrambling, and this first information comprises at least one in synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response.
Wherein, synchronizing signal is such as master sync signal (PSS) or auxiliary synchronous signals (SSS).Bunch public reference signal is pilot signal, is used for demodulation with the information sent in cluster.Broadcast message is such as Physical Broadcast Channel (PBCH) information.
Step S303, each little base station in same Microcell bunch independently sends the second information, this second information uses corresponding Microcell, this little base station mark to carry out scrambling, this second information comprises at least one in reference signal, demodulated reference signal, control channel information and the data channel information measured as RRM (Radio Resource Management, RRM).
Based on the high density picocell deployment scheme of floored community mark, the embodiment of the present invention also proposes two kinds of accidental access methods.
In one embodiment, accidental access method comprises the following steps:
1) subscriber equipment sends message 1, i.e. random access guiding to Microcell bunch, the random access guiding that the little base station receives user equipment in Microcell bunch sends, and random access guiding uses a bunch mark PCCI to carry out scrambling.
Wherein, subscriber equipment can pass through PRACH(Physical Random AccessChannel, Physical Random Access Channel) send message 1.
2) the little base station in Microcell bunch sends message 2, i.e. accidental access response to subscriber equipment, and this accidental access response comprises the Microcell mark set that user can be accessed by, and accidental access response uses a bunch mark PCCI to carry out scrambling.
Wherein, the signal strength signal intensity that the Microcell mark set that user can be accessed by can be received in each little base station according to user uplink signal by baseband processing unit (BBU) is determined.Such as, baseband processing unit gathers user uplink signal after the signal strength signal intensity that each little base station receives, the Microcell set that the Microcell selecting signal strength signal intensity to be greater than preset value can be accessed by as user.
3) subscriber equipment sends message 3, i.e. scheduled transmission to Microcell bunch, the scheduled transmission that the little base station receives user equipment in Microcell bunch sends, and this scheduled transmission comprises the Microcell mark that user selects, and this scheduled transmission uses a bunch mark PCCI to carry out scrambling.
Wherein, subscriber equipment can pass through PUSCH(Physical Uplink SharedChannel, Physical Uplink Shared Channel) send message 3.
4) the little base station in Microcell bunch sends collision detection to subscriber equipment, and this collision detection comprises the Microcell mark of user's access, and collision detection uses a bunch mark PCCI to carry out scrambling.
In another embodiment, accidental access method comprises the following steps:
1) random access guiding that the little base station receives user equipment in Microcell bunch sends, random access guiding uses a bunch mark PCCI to carry out scrambling.
2) the little base station in Microcell bunch sends accidental access response to subscriber equipment, and this accidental access response comprises the Microcell mark of user's access, and accidental access response uses a bunch mark PCCI to carry out scrambling.
Wherein, the signal strength signal intensity that the Microcell mark of user's access can be received in each little base station according to user uplink signal by baseband processing unit is determined.Such as, baseband processing unit gathers user uplink signal after the signal strength signal intensity that each little base station receives, and selects the Microcell that the maximum Microcell of signal strength signal intensity is accessed as user.
3) scheduled transmission that the little base station receives user equipment in Microcell bunch sends, scheduled transmission uses the Microcell mark PCI of user's access to carry out scrambling.
4) the little base station in Microcell bunch sends collision detection to subscriber equipment, and collision detection uses the Microcell mark PCI of user's access to carry out scrambling.
Based on the high density picocell deployment scheme of floored community mark, the embodiment of the present invention defines different behaviors for the user under different conditions.
User behavior under idle condition is as follows:
The first information intercepted by subscriber equipment in an idle state, and uses a bunch mark to carry out descrambling to the first information.The first information comprises at least one in synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response.
Thus, the subscriber equipment under idle condition can identify Microcell bunch, and each Microcell in None-identified bunch.Real network shown in Fig. 2, the network seen of subscriber equipment as shown in Figure 4 in an idle state.Therefore, the subscriber equipment under idle condition does not need to carry out cell reselection in same Microcell bunch, thus reduces user's cell reselection number of times.
User behavior under connection status is as follows:
The first information intercepted by subscriber equipment in connected state, and uses a bunch mark to carry out descrambling to the first information, and thus, the subscriber equipment under connection status can identify Microcell bunch, the information of certain Microcell intercepted by subscriber equipment in connected state, such as receive the reference signal being used as RRM and measuring, demodulated reference signal, at least one in downlink control channel information and downstream data channel information, and use Microcell mark to carry out descrambling, or, subscriber equipment in connected state sends control signaling and data to certain Microcell, such as send at least one in ascending control channel information and uplink data channels information, and use Microcell mark to carry out scrambling, thus, each Microcell during subscriber equipment under connection status can identify bunch.
Visible, the subscriber equipment under connection status can identify Microcell bunch and bunch in each Microcell.Real network shown in Fig. 2, the network seen of subscriber equipment as shown in Figure 5 in connected state.
In addition, subscriber equipment can according to first information such as the synchronizing signal intercepted, bunch public reference signal, broadcast message, paging information, accidental access responses, Microcell switching is carried out in same Microcell bunch, do not need again to obtain in Target cell synchronously, read system information again is not needed in Target cell yet, therefore, decrease handover delay, improve the success rate of switching.
Fig. 6 is the structural representation of a high density picocell deployment system of the present invention embodiment.
As shown in Figure 6, the system of the present embodiment comprises: the little base station 61 in Microcell bunch, wherein, density is divided into Microcell bunch higher than the very small cell of preset value, each Microcell bunch configuration bunch of mark, each Microcell in Microcell bunch configures a Microcell and identifies; All little base station 61 in same Microcell bunch, for sending the first information on identical running time-frequency resource, this first information uses bunch mark to carry out scrambling, and this first information comprises at least one in synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response; And, each little base station 61 in same Microcell bunch, also send the second information for independent, this second information uses corresponding Microcell, this little base station mark to carry out scrambling, and this second information comprises at least one in reference signal, demodulated reference signal, control channel information and the data channel information measured as RRM.
In one embodiment, the little base station 61 in Microcell bunch also for: receive the random access guiding that subscriber equipment sends; Accidental access response is sent to subscriber equipment, this accidental access response comprises the Microcell mark set that user can be accessed by, and the signal strength signal intensity that the Microcell mark set that user wherein can be accessed by is received in each little base station according to user uplink signal by baseband processing unit is determined; Receive the scheduled transmission that subscriber equipment sends, this scheduled transmission comprises the Microcell mark that user selects; Send collision detection to subscriber equipment, this collision detection comprises the Microcell mark of user's access; Wherein, random access guiding, accidental access response, scheduled transmission and collision detection all use bunch mark to carry out scrambling.
In one embodiment, the little base station 61 in Microcell bunch also for: receive the random access guiding that subscriber equipment sends; Send accidental access response to subscriber equipment, this accidental access response comprises the Microcell mark of user's access, and the signal strength signal intensity that the Microcell mark of user's access is wherein received in each little base station according to user uplink signal by baseband processing unit is determined; Receive the scheduled transmission that subscriber equipment sends; Collision detection is sent to subscriber equipment; Wherein, random access guiding and accidental access response all use bunch mark to carry out scrambling, and the Microcell mark that scheduled transmission and collision detection all use user to access carries out scrambling.
In one embodiment, as shown in Figure 7, this system also comprises: subscriber equipment 72, for intercepting the first information in an idle state, and uses a bunch mark to carry out descrambling to the first information.
In one embodiment, subscriber equipment 72, also for intercepting the first information in connected state, and uses a bunch mark to carry out descrambling to the first information; Receive at least one in reference signal, demodulated reference signal, downlink control channel information and the downstream data channel information being used as RRM and measuring, and use Microcell mark to carry out descrambling, or, send at least one in ascending control channel information and uplink data channels information, and use Microcell mark to carry out scrambling.
In one embodiment, subscriber equipment 72, also for carrying out Microcell switching according to the first information of intercepting in same Microcell bunch.
The high density picocell deployment method and system that the embodiment of the present invention proposes at least has the following advantages:
First, the very small cell of high-density deployment is divided into Microcell bunch, each Microcell bunch configuration bunch of mark, each Microcell in bunch configures a Microcell mark, namely Microcell still has the Microcell mark of oneself under bunch association of mark, thus maintain cell splitting gain, overcome the bottleneck of single community spaced antenna control signal capacity constraint; And, all little base station in same Microcell bunch sends the control informations such as synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response on identical running time-frequency resource, solve the interference problem of control signal minizone in same cluster, improve the reliability of control signal, be conducive to the more effective discovery Microcell of user.
Secondly, subscriber equipment under idle condition can listen to the first information such as synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response, therefore the subscriber equipment under idle condition can identify Microcell bunch, and each Microcell in None-identified bunch, therefore, subscriber equipment under idle condition does not need to carry out cell reselection in same Microcell bunch, thus reduces user's cell reselection number of times.
Again, subscriber equipment can according to first information such as the synchronizing signal intercepted, bunch public reference signal, broadcast message, paging information, accidental access responses, Microcell switching is carried out in same Microcell bunch, do not need again to obtain in Target cell synchronously, read system information again is not needed in Target cell yet, therefore, decrease handover delay, improve the success rate of switching.
In addition, the cell ID based on layering also proposed two kinds of Random Access, to make subscriber equipment obtain the Microcell mark of user's access.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a high density picocell deployment method, comprising:
Density is divided into Microcell bunch higher than the very small cell of preset value, each Microcell bunch configuration bunch of mark, each Microcell in Microcell bunch configures a Microcell and identifies;
All little base station in same Microcell bunch sends the first information on identical running time-frequency resource, this first information uses bunch mark to carry out scrambling, and this first information comprises at least one in synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response;
Each little base station in same Microcell bunch independently sends the second information, this second information uses corresponding Microcell, this little base station mark to carry out scrambling, and this second information comprises at least one in reference signal, demodulated reference signal, control channel information and the data channel information measured as RRM.
2. method according to claim 1, is characterized in that, also comprises:
The random access guiding that little base station receives user equipment in Microcell bunch sends;
Little base station in Microcell bunch sends accidental access response to subscriber equipment, this accidental access response comprises the Microcell mark set that user can be accessed by, and the signal strength signal intensity that the Microcell mark set that user wherein can be accessed by is received in each little base station according to user uplink signal by baseband processing unit is determined;
The scheduled transmission that little base station receives user equipment in Microcell bunch sends, this scheduled transmission comprises the Microcell mark that user selects;
Little base station in Microcell bunch sends collision detection to subscriber equipment, and this collision detection comprises the Microcell mark of user's access;
Wherein, random access guiding, accidental access response, scheduled transmission and collision detection all use bunch mark to carry out scrambling.
3. method according to claim 1, is characterized in that, also comprises:
The random access guiding that little base station receives user equipment in Microcell bunch sends;
Little base station in Microcell bunch sends accidental access response to subscriber equipment, this accidental access response comprises the Microcell mark of user's access, and the signal strength signal intensity that the Microcell mark of user's access is wherein received in each little base station according to user uplink signal by baseband processing unit is determined;
The scheduled transmission that little base station receives user equipment in Microcell bunch sends;
Little base station in Microcell bunch sends collision detection to subscriber equipment;
Wherein, random access guiding and accidental access response all use bunch mark to carry out scrambling, and the Microcell mark that scheduled transmission and collision detection all use user to access carries out scrambling.
4. method according to claim 1, is characterized in that, also comprises:
The first information intercepted by subscriber equipment in an idle state, and uses a bunch mark to carry out descrambling to the first information.
5. method according to claim 1, is characterized in that, also comprises:
The first information intercepted by subscriber equipment in connected state, and uses a bunch mark to carry out descrambling to the first information;
Subscriber equipment in connected state receives at least one in reference signal, demodulated reference signal, downlink control channel information and the downstream data channel information being used as RRM and measuring, and use Microcell mark to carry out descrambling, or, subscriber equipment in connected state sends at least one in ascending control channel information and uplink data channels information, and uses Microcell mark to carry out scrambling.
6. method according to claim 1, is characterized in that, also comprises: subscriber equipment carries out Microcell switching according to the first information of intercepting in same Microcell bunch.
7. a high density picocell deployment system, comprise: the little base station in Microcell bunch, wherein, density is divided into Microcell bunch higher than the very small cell of preset value, each Microcell bunch configuration bunch of mark, each Microcell in Microcell bunch configures a Microcell and identifies;
All little base station in same Microcell bunch, for sending the first information on identical running time-frequency resource, this first information uses bunch mark to carry out scrambling, and this first information comprises at least one in synchronizing signal, bunch public reference signal, broadcast message, paging information, accidental access response;
And, each little base station in same Microcell bunch, also send the second information for independent, this second information uses corresponding Microcell, this little base station mark to carry out scrambling, and this second information comprises at least one in reference signal, demodulated reference signal, control channel information and the data channel information measured as RRM.
8. system according to claim 7, is characterized in that, the little base station in Microcell bunch also for:
Receive the random access guiding that subscriber equipment sends;
Accidental access response is sent to subscriber equipment, this accidental access response comprises the Microcell mark set that user can be accessed by, and the signal strength signal intensity that the Microcell mark set that user wherein can be accessed by is received in each little base station according to user uplink signal by baseband processing unit is determined;
Receive the scheduled transmission that subscriber equipment sends, this scheduled transmission comprises the Microcell mark that user selects;
Send collision detection to subscriber equipment, this collision detection comprises the Microcell mark of user's access;
Wherein, random access guiding, accidental access response, scheduled transmission and collision detection all use bunch mark to carry out scrambling.
9. system according to claim 7, is characterized in that, the little base station in Microcell bunch also for:
Receive the random access guiding that subscriber equipment sends;
Send accidental access response to subscriber equipment, this accidental access response comprises the Microcell mark of user's access, and the signal strength signal intensity that the Microcell mark of user's access is wherein received in each little base station according to user uplink signal by baseband processing unit is determined;
Receive the scheduled transmission that subscriber equipment sends;
Collision detection is sent to subscriber equipment;
Wherein, random access guiding and accidental access response all use bunch mark to carry out scrambling, and the Microcell mark that scheduled transmission and collision detection all use user to access carries out scrambling.
10. system according to claim 7, is characterized in that, this system also comprises: subscriber equipment, for intercepting the first information in an idle state, and uses a bunch mark to carry out descrambling to the first information.
11. systems according to claim 10, is characterized in that, subscriber equipment, also for intercepting the first information in connected state, and use a bunch mark to carry out descrambling to the first information; Receive at least one in reference signal, demodulated reference signal, downlink control channel information and the downstream data channel information being used as RRM and measuring, and use Microcell mark to carry out descrambling, or, send at least one in ascending control channel information and uplink data channels information, and use Microcell mark to carry out scrambling.
12. systems according to claim 10, is characterized in that, subscriber equipment, also for carrying out Microcell switching according to the first information of intercepting in same Microcell bunch.
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