CN103428703B - Frequency spectrum resource acquisition methods and system - Google Patents
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Abstract
The invention discloses a kind of frequency spectrum resource acquisition methods and systems, wherein this method includes that macro base station is judged as whether the frequency spectrum resource respectively authorized can meet business demand respectively with Home eNodeB；It cannot meet its business demand if it is the frequency spectrum resource of macro base station mandate, then macro base station is perceived within the scope of the frequency spectrum resource for Home eNodeB mandate with the presence or absence of the frequency range not used by Home eNodeB, as existed, then by the frequency allocation not used by Home eNodeB perceived to macro base station；It cannot meet its business demand if it is the frequency spectrum resource of Home eNodeB mandate, then Home eNodeB is perceived within the scope of the frequency spectrum resource for macro base station mandate with the presence or absence of the frequency range not used by macro base station, as existed, then by the frequency allocation not used by macro base station perceived to Home eNodeB.The present invention can not only improve the utilization rate of frequency spectrum resource, and the service quality of indoor user can also be effectively ensured.
Description
Technical Field
The present invention relates to the field of home base stations, and in particular, to a method and a system for acquiring spectrum resources.
Background
According to relevant statistics, more than 50% of voice services and more than 70% of data services in a future mobile communication system will occur indoors, and indoor, low-speed and hot spots will become more important application scenes in the future mobile internet era, so that one of the working focuses of 3GPP LTE-Advanced is to optimize indoor scenes to meet the requirements of future users for voice and high-speed data service transmission in the indoor scenes.
femtocell (Home NodeB, Home base station) technology is increasingly popular in the industry as an effective means for improving the service quality of indoor user voice and high-speed data services due to its characteristics of low power consumption, low cost, plug and play, flexible configuration, and the like. Currently 3GPP has begun to standardize on femtocells and has discussed femtocell technology in its release R8, R9, R10 and R11.
After the femtocell is introduced into the traditional cellular network, the management of the wireless resources of the network becomes more and more complex, wherein the problem of the utilization rate of the frequency spectrum resources is more and more obvious. Because the deployment of the femtocell has uncertainty, the number of the femtocells at different time instants in each macro cell is difficult to be predetermined, and because the problem of information interaction between the femtocell and the macro base station and between the femtocells is still under discussion at present, after the femtocell is introduced, how the femtocell and the macro base station efficiently utilize limited system spectrum resources is a current research hotspot.
At present, the resource allocation mechanism between the femtocell and the macro base station mainly includes the following three types:
in the first allocation mechanism, the femtocell and the macro base station use the same frequency band, i.e. a co-channel configuration, as shown in fig. 1. The femtocell and the macro base station can use the most resources in the resource allocation mechanism, but the caused co-channel interference is the most serious.
In the second allocation mechanism, the femtocell and the macro base station use independent orthogonal frequency bands, as shown in fig. 2. In the resource allocation mechanism, the femtocell and the macro base station respectively use mutually orthogonal resources, so that intra-cell co-channel interference can be avoided. However, the spectrum efficiency of the distribution machine system is the lowest, especially in the case that the load of femtocell and macro base station changes obviously, the resource distribution mechanism causes the reduction of the system efficiency to be more obvious.
In a third allocation mechanism, the femtocell and the macro base station share part of the frequency resources, as shown in fig. 3. The two factors affecting the system throughput, namely co-channel interference and spectral efficiency, are comprehensively considered in the resource allocation mechanism, and the compromise between the two allocation mechanisms is considered to better meet the requirement of the future mobile communication system on the use of frequency resources, so that the resource allocation mechanism is widely concerned in the industry.
The inventor has noted that although the third allocation mechanism is better than the first two allocation mechanisms, the inventor has earnestly studied and found that the third allocation mechanism has at least the following disadvantages:
first, there have been studies that do not take into account the characteristics of the future spectral distribution of IMT-A. The above resource allocation mechanism between the femtocell and the macro base station can reduce interference and improve system throughput to a certain extent, but most of the current researches assume that operators allocate the same frequency points, generally frequency bands around 2Ghz, to the macro base station and the femtocell. However, potential deployment frequency bands for LTE-Advanced in the future include 450-470 Mhz, 698-862 Mhz, 790-862 Mhz, 2.3-2.4 Ghz, 3.2-4.2 Ghz, 4.4-4.99 Ghz and the like. From these frequency bands, it can be seen that, except that 2.3-2.4 Ghz is located in the frequency band commonly used by the conventional cellular system, the new frequency band shows a trend of high and low diversity. Especially a large number of potential bands are concentrated in the high frequency spectrum above 3.4 Ghz. The coverage area, the building penetrating capability and the mobility of the high frequency band are not as good as those of the low frequency band, and in addition, based on the requirements of a foreign mobile communication system on high speed and large bandwidth (the maximum working bandwidth required by LTE-A is 100M, and the transmission peak rate under low mobility reaches 1 GBps), an operator is likely to cooperate the high frequency band and the low frequency band in networking, namely, high and low frequency inter-frequency networking, so that how to reasonably allocate resources to a femtocell and a macro base station under the condition of high and low frequency band inter-frequency networking becomes a problem.
Secondly, the existing research does not form a unified idea for the cooperation mode between two systems. To perform reasonable resource allocation on a femtocell and a macro base station, a good information interaction mechanism needs to be provided between the two networks, and three information interaction mechanisms are provided in the current research based on the femtocell and the macro base station: the first is information interaction through the X2 interface, but 3GPP has rejected this scheme in the latest release version for cost considerations; the second is to perform information interaction between two networks by using a mobile terminal as a relay, but the scheme causes the complexity of terminal design to be high and the reliability to be low; and the third is that the femtocell or the macro base station obtains the resource use condition of the surrounding macro base station or the femtocell through the spectrum sensing technology of the cognitive radio, the scheme does not need to improve the terminal, and mature technology supports the implementation of the scheme. The cognitive radio technology has attracted much attention in recent years as an effective means for efficiently utilizing the increasingly scarce spectrum resources, however, the cognitive radio technology is still not practically applied in the research stage, and the application of the cognitive radio technology in the femtocell network also provides an example for the application of the cognitive radio technology in the 4G network. There have been many studies discussing the application of cognitive radio technology in femtocell networks, however, in these studies, femtocell is treated as a slave system, and in future mobile communication systems, more than 50% of voice traffic and more than 70% of data traffic will occur indoors, and at present, the service quality of indoor users cannot be guaranteed as well as outdoor users.
Disclosure of Invention
The invention aims to provide a method and a system for acquiring spectrum resources, which can efficiently utilize the spectrum resources.
According to one aspect of the invention, a method for acquiring spectrum resources is provided, which comprises that a macro base station and a home base station respectively judge whether the spectrum resources authorized by the macro base station and the home base station can meet service requirements; if the spectrum resources authorized for the macro base station cannot meet the service requirements of the macro base station, the macro base station perceives whether a frequency band which is not used by the home base station exists in the spectrum resources authorized for the home base station, and if so, the perceived frequency band which is not used by the home base station is distributed to the macro base station; if the spectrum resource authorized for the home base station cannot meet the service requirement of the home base station, the home base station perceives whether a frequency band which is not used by the macro base station exists in the spectrum resource range authorized for the macro base station, and if so, the perceived frequency band which is not used by the macro base station is distributed to the home base station.
According to another aspect of the present invention, a spectrum resource obtaining system is further provided, including a macro base station and a home base station, where the macro base station is configured to determine whether a spectrum resource authorized for the macro base station can meet a service requirement of the macro base station, and if the spectrum resource authorized for the macro base station cannot meet the service requirement of the macro base station, sense whether a frequency band not used by the home base station exists within a spectrum resource range authorized for the home base station, and if so, allocate the sensed frequency band not used by the home base station to the macro base station; the femtocell is used for judging whether the spectrum resources authorized by the femtocell can meet the service requirements, if the spectrum resources authorized by the femtocell can not meet the service requirements, whether frequency bands which are not used by the macrocell exist in the spectrum resource range authorized by the macrocell is sensed, and if the frequency bands exist, the sensed frequency bands which are not used by the macrocell are distributed to the femtocell.
The method and the system for acquiring the frequency spectrum resources not only allocate the authorized frequency bands for the macro base station, but also allocate the corresponding authorized frequency bands for the home base station according to different application scenes. When the authorized frequency band allocated to any one of the macro base station and the home base station is used up, the user can sense whether an unused frequency band exists in the authorized frequency band allocated to the other side by the network, and if the unused frequency band exists, the user uses the frequency band in own service. Therefore, the utilization rate of the frequency spectrum resources is improved, and meanwhile, the corresponding authorized frequency band is distributed to the femtocell, so that the service quality of indoor users can be effectively guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application. In the drawings:
fig. 1 is a schematic diagram of a resource allocation mechanism between a home base station and a macro base station in the prior art.
Fig. 2 is a schematic diagram of another resource allocation mechanism between a home base station and a macro base station in the prior art.
Fig. 3 is a schematic diagram illustrating a resource allocation mechanism between a home base station and a macro base station in the prior art.
Fig. 4 is a schematic diagram of a resource allocation mechanism between a home base station and a macro base station according to the present invention.
Fig. 5 is a schematic diagram of another resource allocation mechanism between the home base station and the macro base station according to the present invention.
Fig. 6 is a schematic diagram of an interference scenario between home base stations.
Fig. 7 is a flowchart illustrating a spectrum resource obtaining method according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of an embodiment of the spectrum resource acquisition system of the present invention.
Fig. 9 is a schematic structural diagram of another embodiment of the spectrum resource acquiring system of the present invention.
Fig. 10 is a schematic structural diagram of a spectrum resource acquiring system according to still another embodiment of the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
As mentioned above, it is calculated that more than 50% of voice services and more than 70% of data services will occur indoors in the future, and the femtocell technology is used as an effective means for ensuring indoor coverage of a future mobile communication system (LTE-a) and improving system throughput, and thus the service quality of users needs to be ensured.
After earnest research, the inventor changes the situation that a femtocell is taken as a slave of a macro base station in the existing cognitive femtocell research, and allocates at least one part of high-frequency band resources in frequency spectrum resources to the femtocell to be taken as an authorized frequency band, so that the status of the femtocell is improved, and the QoS requirement of indoor users can be better ensured.
In addition, the inventor also researches and discovers that the authorized frequency bands of the macro base station and the femtocell can be determined according to the characteristics of different frequency bands. The high frequency band (e.g., ≧ 1 Ghz) is less than the low frequency band in terms of coverage, building penetration and mobility, and is therefore better suited for providing coverage to indoor low-speed users, while the low frequency band (e.g., < 1 Ghz) is more diffractive, has a larger coverage area and is more mobile, and is therefore better suited for providing coverage to outdoor high-speed users. Based on the above considerations, as shown in fig. 4 and 5, the high frequency band resources or at least a part of the high frequency band resources may be allocated to the femtocell as its licensed band, while the low frequency band resources and another part of the high frequency band resources are allocated to the macro base station as its licensed band, so that the allocation of a part of the high frequency resources to the macro base station takes into account that outdoor users may also have low-speed hot spot areas.
In addition, the present inventors have found that the multiplexing rate of the high band resource is higher than that of the low band resource, and the following is described in detail with reference to fig. 6.
As shown in FIG. 6, when both Femto BS1 and Femto BS2 use frequency f1 to communicate with their corresponding FUEs, it may cause interference from Femto BS1 on FUE2 and from Femto BS2 on FUE1, the S of a FUE (e.g., FUE1 or FUE 2)IR isWherein, PrIs the power of the desired signal received by FUE and I is the power of the interfering signal. The distance relationship between two femtocells when using the high and low frequency bands respectively and obtaining the same SIR is discussed below.
When femto BS is communicating using the 1Ghz band, we assume distance d between femto BS1 and femto BS21GHz100m, femto BS to FUE distance of 10m, femto BS transmit power of 21dbm, indoor propagation model:wherein, WlossThe through-wall loss of the electromagnetic wave passing through the wall of the building is calculated, and f iscAt 1GHz, the SIR received by FUE2 is: SIRfue2=40dB。
When femto BS uses 3Ghz band for communication, the through-wall loss increases, and SIR is also achieved under the assumption that other conditions are not changedfue2At 40dB, the distance d between femto BS1 and femto BS2 is calculated3GHz56m, it follows that the higher the frequency, the smaller the reuse distance, and therefore the deployment of high band for femto BS can result in increased frequency utilization.
In summary, at least a part of the high band resources may be allocated to the femtocell as its licensed band, and another part of the high band resources and the low band resources may be allocated to the macro base station as its licensed band. Namely, regarding a part of high-frequency band resources, a femtocell serves as a master system, and a macro base station serves as a slave system; and aiming at the other part of high-frequency-band resources and low-frequency-band resources, the macro base station is used as a main system, and the femtocell is used as a slave system. When the resource of the authorized frequency band which can be allocated by the femtocell or the macro base station is used up, the macro base station and the femtocell can use the resource of the unauthorized frequency band by adopting an opportunistic access mode according to the surrounding interference condition.
Fig. 7 is a flowchart illustrating a spectrum resource obtaining method according to an embodiment of the present invention.
As shown in fig. 7, this embodiment may include the steps of:
s702, because the system allocates authorized spectrum resources to the macro base station, the macro base station firstly judges whether the authorized spectrum resources can meet the service requirements, and if the authorized spectrum resources can meet the service requirements, the system allocates frequency bands to the macro base station terminal by using the authorized spectrum resources;
s704, if the spectrum resource authorized for the macro base station can not meet the service requirement, the macro base station perceives whether a frequency band which is not used by the home base station exists in the spectrum resource range authorized for the home base station, and if so, the perceived frequency band which is not used by the home base station is distributed to the macro base station;
s706, the same as the macro base station, since the system also allocates the authorized spectrum resources to the home base station, the home base station also first determines whether the authorized spectrum resources can meet the service requirements, and if the authorized spectrum resources can meet the service requirements, the system allocates a frequency band to the home base station terminal using the authorized spectrum resources;
s708, if the spectrum resource authorized for the femtocell cannot meet the service requirement, the femtocell perceives whether there is a frequency band unused by the macro base station in the spectrum resource range authorized for the macro base station, and if so, allocates the perceived frequency band unused by the macro base station to the femtocell.
It should be noted that the execution sequence of the step S702 and the step S706 is not dependent on each other, and the two steps may be executed sequentially or in parallel.
According to the embodiment, different frequency bands are allocated to the macro base station and the home base station as authorized frequency bands according to different scenes, and when the macro base station or the home base station is allocated to the environment with insufficient resources, the environment can be used as an interference condition of surrounding unauthorized frequency bands perceived by a system, and the unauthorized resources are used in an opportunistic access mode. The resource division mode not only solves the resource allocation problem in the scene of pilot frequency networking, but also enables the utilization of resources to be more efficient by using the cognitive radio technology, thereby improving the frequency spectrum efficiency.
In one example, the step S704 may be implemented by:
when the spectrum resources authorized for the macro base station are used up, the macro base station and a macro base station terminal communicated with the macro base station simultaneously sense whether a frequency band which is not used by the home base station exists in a spectrum resource range authorized for the home base station through spectrum detection (also called as an energy detection technology), if so, the macro base station and the macro base station terminal carry out interaction on sensed results to determine a frequency band intersection sensed by the macro base station and then allocate the frequency band in the frequency band intersection to the macro base station for use, wherein the frequency band in the frequency band intersection can be randomly selected to be allocated to the macro base station for use; or selecting a frequency band with lower frequency in the frequency band intersection according to the frequency characteristics to be distributed to the macro base station for use.
Specifically, when each frequency band in the spectrum resources authorized for the macro base station is used up, the system enables the cognitive function, that is, the energy detection technology is used to sense the frequency band authorized but not used by the surrounding home base station within a certain spectrum range (here, the spectrum range authorized for the home base station). The spectrum sensing function may be embodied as: after the antenna receives a signal, firstly, a frequency spectrum range authorized by the system for the home base station is filtered through a band-pass filter, the total energy in each small frequency band (corresponding to a channel bandwidth) in the frequency spectrum range is calculated according to the channel bandwidth, the calculated energy is compared with a set threshold value, if the calculated energy is higher than the threshold value, the frequency band is determined to be used by the home base station, otherwise, the frequency band is determined not to be used by the home base station and can be used by the macro base station. If the macro base station and the macro base station terminal jointly detect a plurality of available frequency bands, the macro base station and the macro base station terminal can mutually negotiate the frequency band to be used, or the macro base station randomly selects the frequency band to be used, and then the macro base station terminal is informed of the frequency band information, or the macro base station and the macro base station terminal jointly select the frequency band with the lowest frequency to use.
In another example, step S708 may be implemented by:
when the spectrum resources authorized for the home base station are used up, the home base station and the home base station terminal sense whether a frequency band which is not used by the macro base station exists in the spectrum resource range authorized for the macro base station through spectrum detection, if yes, the home base station and the home base station terminal interact the sensed result, determine the frequency band intersection sensed by the home base station and the frequency band intersection sensed by the home base station terminal, and then allocate the frequency band in the frequency band intersection to the home base station for use, wherein the frequency band in the frequency band intersection can be randomly selected to be allocated to the home base station for use; or selecting a frequency band with higher frequency in the frequency band intersection according to the frequency characteristics to be distributed to the femtocell for use.
Specifically, when each frequency band in the spectrum resources authorized for the home base station is used up, the system enables the cognitive function, that is, the system senses, within a certain spectrum range (here, the spectrum range authorized for the macro base station), the frequency band authorized but not used by the surrounding macro base station by using the energy detection technology. The spectrum sensing function may be embodied as: after the antenna receives a signal, firstly, a frequency spectrum range authorized by the system for the macro base station is filtered through a band-pass filter, the total energy in each small frequency band (corresponding to the channel bandwidth) in the frequency spectrum range is calculated according to the channel bandwidth, the calculated energy is compared with a set threshold value, if the calculated energy is higher than the threshold value, the frequency band is determined to be used by the macro base station, and if the calculated energy is not higher than the threshold value, the frequency band is determined not to be used by the macro base station and can be used by the home base station. If the femtocell and the femtocell terminal detect a plurality of available frequency bands together, the femtocell and the femtocell terminal can negotiate with each other about the frequency band to be used, or the femtocell randomly selects the frequency band to be used, and then the femtocell terminal is informed of the frequency band information, or the femtocell and the femtocell terminal select the frequency band with the highest frequency together for use.
It will be understood by those skilled in the art that all or part of the steps of implementing the above method embodiments may be implemented by hardware associated with program instructions, the program may be stored in a storage medium readable by a computing device, and when executed, the program performs the steps of the above method embodiments, and the storage medium may include various media capable of storing program codes, such as ROM, RAM, magnetic disk and optical disk.
Fig. 8 is a schematic structural diagram of an embodiment of the spectrum resource acquisition system of the present invention.
As shown in fig. 8, the system 80 of this embodiment may include a macro base station 802 and a home base station 804, where the macro base station 802 is configured to determine whether spectrum resources authorized for the macro base station can meet its service requirement, and if the spectrum resources authorized for the macro base station cannot meet its service requirement, sense whether a frequency band not used by the home base station exists within a spectrum resource range authorized for the home base station, and if so, allocate the sensed frequency band not used by the home base station to the macro base station; the femtocell 804 is configured to determine whether the spectrum resource authorized for the femtocell can meet the service requirement, and if the spectrum resource authorized for the femtocell cannot meet the service requirement, sense whether a frequency band not used by the macro base station exists in the spectrum resource range authorized for the macro base station, and if so, allocate the sensed frequency band not used by the macro base station to the femtocell.
Fig. 9 is a schematic structural diagram of another embodiment of the spectrum resource acquiring system of the present invention.
As shown in fig. 9, the macro base station 902 in the system 90 of this embodiment may include a macro base station determining unit 9021 and a macro base station sensing unit 9022, where the macro base station determining unit 9021 determines whether the authorized spectrum resources can meet the service requirements of the macro base station, and if the authorized spectrum resources cannot meet the service requirements of the macro base station, the macro base station sensing unit 9022 senses whether a frequency band that is not used by the home base station exists within the range of the authorized spectrum resources of the home base station, and if so, allocates the sensed frequency band that is not used by the home base station to the macro base station.
In another embodiment of the spectrum resource acquiring system of the present invention, referring to fig. 9 again, the home base station 904 in this embodiment may include a home base station determining unit 9041 and a home base station sensing unit 9042, where the home base station determining unit 9041 determines whether the authorized spectrum resource can meet the service requirement of the home base station, and if the authorized spectrum resource cannot meet the service requirement of the home base station, the home base station sensing unit 9042 senses whether a frequency band that is not used by the macro base station exists within the spectrum resource range authorized by the macro base station, and if so, allocates the sensed frequency band that is not used by the macro base station to the home base station.
Fig. 10 is a schematic structural diagram of a spectrum resource acquiring system according to still another embodiment of the present invention.
As shown in fig. 10, compared with the embodiment in fig. 9, the system 100 of this embodiment further includes a macro base station terminal 102, where the terminal 102 includes a macro base station terminal sensing unit 1021, a macro base station terminal sensing result sending unit 1022, and a macro base station frequency band information receiving unit 1023, where when spectrum resources authorized for the macro base station are used up, the macro base station terminal sensing unit 1021 and the macro base station sense whether a frequency band not used by the home base station exists in a spectrum resource range authorized for the home base station through spectrum detection at the same time, if so, the macro base station terminal sensing result sending unit 1022 sends a result sensed by the macro base station terminal sensing unit to the macro base station, and the macro base station frequency band information receiving unit 1023 receives frequency band information determined by the macro base station.
In this embodiment, the macro base station sensing unit 1042 in the macro base station 104 in the system 100 may include a first spectrum detection subunit 1042a, a first intersection determination subunit 1042b, and a first frequency band allocation subunit 1042c, where when a spectrum resource authorized for the macro base station is used up, the first spectrum detection subunit 1042a and the macro base station terminal 102 sense whether a frequency band unused by the home base station exists in a spectrum resource range authorized for the home base station through spectrum detection, if so, the first intersection determination subunit 1042b interacts a result sensed by the first spectrum detection subunit 1042a with a result sensed by the macro base station terminal 102, and determines an intersection frequency band sensed by the two, and the first frequency band allocation subunit 1042c allocates a frequency band in the frequency band intersection determined by the first intersection determination subunit 1042b to the macro base station for use.
In yet another embodiment of the spectrum resource acquiring system of the present invention, referring to fig. 10 again, the system 100 of this embodiment may further include a femtocell terminal 106, where the terminal 106 may include a femtocell terminal sensing unit 1061, a femtocell terminal sensing result sending unit 1062, and a femtocell frequency band information receiving unit 1063, where when the spectrum resource authorized for the femtocell is used up, the femtocell terminal sensing unit 1061 and the femtocell sense whether a frequency band that is not used by the macro base station exists in the spectrum resource range authorized for the macro base station through spectrum detection at the same time, if so, the femtocell terminal sensing result sending unit 1062 sends the result sensed by the femtocell terminal sensing unit to the femtocell, and the femtocell frequency band information receiving unit 1063 receives frequency band information determined by the femtocell.
In this embodiment, the home base station sensing unit 1082 in the home base station 108 in the system 100 may include a second spectrum detection subunit 1082a, a second intersection determination subunit 1082b, and a second frequency band allocation subunit 1082c, where when the spectrum resource authorized for the home base station is used up, the second spectrum detection subunit 1082a and the home base station terminal simultaneously sense, through spectrum detection, whether a frequency band that is not used by the macro base station exists within the spectrum resource range authorized for the macro base station, if so, the second intersection determination subunit 1082b interacts a result sensed by the second spectrum detection subunit and a result sensed by the home base station terminal, and determines an intersection of the frequency bands sensed by the two, and the second frequency band allocation subunit 1082c allocates the frequency band in the intersection set of the frequency bands determined by the second intersection determination subunit to the home base station for use.
It is emphasized that the home base station in the above embodiments may be authorized with the high frequency band in the network-planned spectrum resource, and the macro base station may be authorized with the low frequency band in the network-planned spectrum resource. Optionally, the home base station may be further authorized with at least a portion of the high frequency band of the network-planned spectrum resources, and the macro base station may be authorized with the low frequency band and the remaining high frequency band of the network-planned spectrum resources.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be mutually referred to. For the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the description of the method embodiment section for the relevant points.
The existing resource allocation mechanism between the home base station and the macro base station cannot be well adapted to the development of a future network, and the embodiment of the invention integrates the importance and the cooperative interaction mechanism between the macro base station and the home base station of the future network, and provides a scheme for acquiring frequency resources by the macro base station and the home base station based on cross sensing. The scheme changes the method that the home base station is used as a macro base station slave system in the existing scheme, and changes the relation between the macro base station and the home base station according to the characteristics of future network development, namely more than 50% of voice service and more than 70% of data service in a future mobile communication system will occur indoors, a part of frequency resources are used as authorized frequency bands of the home base station, a novel cross perception mode is provided, the problem of resource allocation under the scene of inter-frequency networking is solved, the service requirement of indoor users is further met, and meanwhile, the utilization rate of frequency spectrums is also improved.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (8)
1. A method for acquiring spectrum resources is characterized by comprising the following steps:
authorizing at least one part of high frequency band in the frequency spectrum resources planned by the network to a home base station, and authorizing a low frequency band and the rest high frequency band in the planned frequency spectrum resources to a macro base station;
the macro base station and the home base station respectively judge whether the respectively authorized spectrum resources can meet the service requirements;
if the spectrum resource authorized for the macro base station cannot meet the service requirement of the macro base station, the macro base station perceives whether a frequency band which is not used by the home base station exists in the spectrum resource range authorized for the home base station, and if so, the perceived frequency band which is not used by the home base station is distributed to the macro base station;
if the spectrum resource authorized for the home base station cannot meet the service requirement of the home base station, the home base station perceives whether a frequency band which is not used by the macro base station exists in the spectrum resource range authorized for the macro base station, and if so, the perceived frequency band which is not used by the macro base station is distributed to the home base station;
the macro base station perceives whether a frequency band which is not used by the home base station exists in a spectrum resource range authorized for the home base station, and if so, the step of allocating the perceived frequency band which is not used by the home base station to the macro base station comprises the following steps:
when the spectrum resources authorized for the macro base station are used up, the macro base station and the macro base station terminal sense whether a frequency band which is not used by the home base station exists in the spectrum resource range authorized for the home base station through spectrum detection;
if the frequency bands exist, the macro base station and the macro base station terminal carry out interaction on the perceived result and determine the frequency band intersection perceived by the macro base station and the macro base station terminal;
and allocating the frequency bands in the frequency band intersection to the macro base station for use.
2. The method according to claim 1, wherein a high band of the network-planned spectrum resources is granted to the femtocell and a low band of the planned spectrum resources is granted to the macro base station.
3. The method according to claim 1, wherein the step of allocating the frequency bands in the frequency band intersection to the macro base station for use specifically includes:
randomly selecting the frequency bands in the frequency band intersection to be distributed to the macro base station for use; or
And selecting a frequency band with lower frequency in the frequency band intersection to be distributed to the macro base station for use.
4. A method for acquiring spectrum resources is characterized by comprising the following steps:
authorizing at least one part of high frequency band in the frequency spectrum resources planned by the network to a home base station, and authorizing a low frequency band and the rest high frequency band in the planned frequency spectrum resources to a macro base station;
the macro base station and the home base station respectively judge whether the respectively authorized spectrum resources can meet the service requirements;
if the spectrum resource authorized for the macro base station cannot meet the service requirement of the macro base station, the macro base station perceives whether a frequency band which is not used by the home base station exists in the spectrum resource range authorized for the home base station, and if so, the perceived frequency band which is not used by the home base station is distributed to the macro base station;
if the spectrum resource authorized for the home base station cannot meet the service requirement of the home base station, the home base station perceives whether a frequency band which is not used by the macro base station exists in the spectrum resource range authorized for the macro base station, and if so, the perceived frequency band which is not used by the macro base station is distributed to the home base station;
the step that the home base station perceives whether a frequency band which is not used by the macro base station exists in a spectrum resource range authorized for the macro base station, and if so, the step that the perceived frequency band which is not used by the macro base station is distributed to the home base station comprises the following steps:
when the spectrum resources authorized for the home base station are used up, the home base station and the home base station terminal simultaneously sense whether a frequency band which is not used by the macro base station exists in the spectrum resource range authorized for the macro base station through spectrum detection;
if the frequency bands exist, the femtocell and the femtocell terminal interact the perceived result and determine the frequency band intersection perceived by the femtocell and the femtocell terminal;
and allocating the frequency bands in the frequency band intersection to the home base station for use.
5. The method for acquiring spectrum resources according to claim 4, wherein the step of allocating the frequency bands in the frequency band intersection to the femtocell is specifically:
randomly selecting the frequency bands in the frequency band intersection to be distributed to the home base station for use; or
And selecting the frequency band with higher frequency in the frequency band intersection to be distributed to the home base station for use.
6. A spectrum resource acquisition system is characterized by comprising a macro base station and a home base station, wherein the home base station is authorized to have at least one part of high frequency band in the spectrum resources of network planning; the macro base station is authorized to have a low frequency band and a remaining high frequency band in the spectrum resources of the network planning; wherein,
the macro base station includes:
a macro base station judging unit, configured to judge whether the licensed spectrum resource can meet the service requirement;
a macro base station sensing unit, configured to sense whether a frequency band unused by the home base station exists within a spectrum resource range authorized for the home base station if a spectrum resource authorized for the macro base station cannot meet a service requirement of the macro base station, and if so, allocate the sensed frequency band unused by the home base station to the macro base station;
the home base station comprises:
the home base station judging unit is used for judging whether the authorized spectrum resources can meet the service requirements;
a femtocell sensing unit, configured to sense whether a frequency band unused by the macro base station exists within a spectrum resource range authorized for the macro base station if a spectrum resource authorized for the femtocell cannot meet a service requirement of the femtocell, and if so, allocate the sensed frequency band unused by the macro base station to the femtocell;
the system also includes a macro base station terminal,
the macro base station perception unit comprises:
the first spectrum detection subunit is configured to, when the spectrum resource authorized for the macro base station is used up, perceive, through spectrum detection, whether a frequency band unused by the home base station exists within a spectrum resource range authorized for the home base station, together with the macro base station terminal;
a first intersection determining subunit, configured to, if the first intersection determining subunit exists, perform interaction between a result sensed by the first spectrum detecting subunit and a result sensed by the macro base station terminal, and determine a frequency band intersection sensed by the first spectrum detecting subunit and the macro base station terminal;
a first frequency band allocation subunit, configured to allocate the frequency band in the frequency band intersection determined by the first intersection determining subunit to the macro base station for use;
the macro base station terminal includes:
a macro base station terminal sensing unit, configured to sense, through spectrum detection with a macro base station, whether a frequency band unused by the home base station exists within a spectrum resource range authorized for the home base station when spectrum resources authorized for the macro base station are used up;
a macro base station terminal perception result sending unit, configured to send a result perceived by the macro base station terminal perception unit to the macro base station if the result exists;
and the macro base station frequency range information receiving unit is used for receiving the frequency range information determined by the macro base station.
7. The spectrum resource acquisition system of claim 6, wherein the home base station is authorized with a high frequency band in the network-planned spectrum resources; the macro base station is licensed with a low frequency band of the network planned spectrum resources.
8. The spectrum resource acquisition system of claim 6, wherein the system further comprises a home base station terminal,
the home base station sensing unit comprises:
the second spectrum detection subunit is configured to, when the spectrum resources authorized for the home base station are used up, perceive, through spectrum detection, whether a frequency band unused by the macro base station exists within a spectrum resource range authorized for the macro base station together with the home base station terminal;
a second intersection determining subunit, configured to, if the second intersection determining subunit exists, perform interaction between a result sensed by the second spectrum detecting subunit and a result sensed by the femtocell terminal, and determine a frequency band intersection sensed by the second spectrum detecting subunit and the femtocell terminal;
a second frequency band allocation subunit, configured to allocate the frequency band in the frequency band intersection determined by the second intersection determining subunit to the femtocell for use;
the home base station terminal includes:
the home base station terminal sensing unit is used for sensing whether a frequency band which is not used by the macro base station exists in a frequency spectrum resource range authorized by the macro base station through frequency spectrum detection with the home base station when the frequency spectrum resource authorized by the home base station is used up;
the home base station terminal sensing result sending unit is used for sending the sensing result of the home base station terminal sensing unit to the home base station if the sensing result exists;
and the femtocell frequency range information receiving unit is used for receiving the frequency range information determined by the femtocell.
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| WO2015154248A1 (en) * | 2014-04-09 | 2015-10-15 | 华为技术有限公司 | Transmission method for system information, base station and user equipment |
| CN105517026B (en) * | 2014-09-26 | 2019-05-17 | 上海诺基亚贝尔股份有限公司 | The method and apparatus for carrying out exempting from grant channel selection in communication system |
| CN106304091B (en) * | 2015-05-15 | 2022-06-14 | 索尼公司 | Method and apparatus for frequency allocation of unlicensed frequency bands |
| CN106792718A (en) * | 2016-12-28 | 2017-05-31 | 武汉邮电科学研究院 | Suitable for the frequency spectrum resource allocation method of the height frequency range of 5G networks |
| CN112867011B (en) * | 2019-11-28 | 2023-05-12 | 上海华为技术有限公司 | Spectrum resource multiplexing method and device |
| CN113473623B (en) * | 2021-06-30 | 2023-12-15 | 中通服咨询设计研究院有限公司 | Frequency multiplexing system and method for ensuring user rate based on 5G millimeter waves |
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