CN106412989B - Cooperative scheduling method and base station - Google Patents
Cooperative scheduling method and base station Download PDFInfo
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- CN106412989B CN106412989B CN201610863948.9A CN201610863948A CN106412989B CN 106412989 B CN106412989 B CN 106412989B CN 201610863948 A CN201610863948 A CN 201610863948A CN 106412989 B CN106412989 B CN 106412989B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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Abstract
the embodiment of the invention discloses a method for cooperative scheduling, which is used for avoiding spectrum interference generated when only FDD spectrum and TDD spectrum of the same standard frequency band are aggregated. The method provided by the embodiment of the invention comprises the following steps: a base station determines a frequency band of a first preset bandwidth in a Time Division Duplex (TDD) frequency band as a main component carrier; the base station determines a frequency band of a second preset bandwidth in a Frequency Division Duplex (FDD) frequency band as an auxiliary component carrier, wherein the FDD frequency band and the TDD frequency band belong to the same standard frequency band; the base station aggregating the primary component carrier with the secondary component carrier; and when the primary component carrier is in downlink scheduling, the base station schedules a downlink subframe corresponding to the secondary component carrier. The embodiment of the invention also provides a base station. The embodiment of the invention can effectively avoid the frequency spectrum interference generated when the FDD frequency spectrum and the TDD frequency spectrum which only have the same standard frequency band are aggregated.
Description
Technical Field
the present invention relates to the field of communications, and in particular, to a method and a base station for cooperative scheduling.
Background
with the development of mobile communication technology, the requirement of users on data rate is higher and higher, and at the same time, the problem of shortage of spectrum resources is more and more serious. In order to meet the requirement of the LTE-advanced (long Term Evolution advanced) system on the bandwidth, a Carrier Aggregation (CA) technology is proposed. Compared with the LTE system, the LTE-Advanced system needs to make corresponding changes in multiple aspects such as uplink and downlink control channel design, power control, and the like to support the function of carrier aggregation.
carrier aggregation continues to be enhanced from none to none in the lte (long Term evolution) standard defined by the third Generation Partnership Project (3 GPP). In the Rel-10 edition, a carrier aggregation technology is introduced, 5 member carriers are aggregated at most, peak rates of 100Mbit/s can be provided for users in a high-speed mobile state and peak rates of 1Gbit/s can be provided for users in a low-speed mobile state, and intra-frequency band continuous carrier aggregation and inter-frequency band carrier aggregation are supported. With the further highlighting of the uplink service requirement, the Rel-11 version enhances the carrier aggregation technology, increases more CA configurations, and studies and standardizes the uplink carrier aggregation technology between frequency bands.
in available frequency spectrums of an existing LTE system defined by 3GPP, both frequency spectrums of Band7(FDD) and Band38(TDD) belong to a 2600M frequency Band, and the two frequency spectrums of Band7 and Band38 are close to each other, and due to interference such as blocking and spurious signals existing between frequency spectrums, CA capabilities of Band7 and Band38 are not defined in the 3GPP LTE standard, and serious frequency spectrum interference exists when only Band7 and Band38 carriers of the 2600M frequency spectrum converge. In other standard frequency bands, there is also serious spectrum interference when only FDD and TDD spectrums are aggregated. In the prior art, when only the FDD spectrum and the TDD spectrum of the same standard frequency band are aggregated, serious spectrum interference is generated.
disclosure of Invention
The embodiment of the invention provides a method for cooperative scheduling, which is used for avoiding spectrum interference generated when only FDD spectrum and TDD spectrum of the same standard frequency band are aggregated.
a first aspect of an embodiment of the present invention provides a method for collaborative scheduling, including: the method comprises the steps that a base station sets the sizes of a first preset bandwidth and a second preset bandwidth according to a preset rule, the base station determines the frequency spectrum with the size of the first preset bandwidth in a TDD frequency band as a primary component carrier, the base station determines the frequency spectrum with the size of the second preset bandwidth in an FDD frequency band as a secondary component carrier, the primary component carrier and the secondary component carrier determined by the base station are gathered together by the base station, when the primary component carrier is scheduled by the base station and is in a downlink state, the base station schedules a downlink subframe of the secondary component carrier, and the downlink subframe corresponds to a downlink subframe of the primary component carrier. It can be seen that, when the primary component carrier is in downlink scheduling, the downlink subframe of the secondary component carrier does not collide with the uplink subframe and the special subframe of the primary component carrier, thereby avoiding spectrum interference generated when only the FDD spectrum and the TDD spectrum of the same standard frequency band are aggregated.
with reference to the first aspect of the present embodiment, in a first implementation manner of the first aspect of the present embodiment, after the base station aggregates the primary component carrier and the secondary component carrier, the method further includes: a base station sends an aggregation indication message indicating that a primary component carrier and a secondary component carrier complete aggregation to UE (user equipment), the UE configures a Channel Quality Indication (CQI) according to the received aggregation indication message, the UE sends the CQI of the aggregation carrier to the base station, and when the primary component carrier is in an uplink subframe reported by the CQI, the base station does not schedule a downlink subframe corresponding to the secondary component carrier; when the primary component carrier is in downlink scheduling, the base station selects a subframe corresponding to the secondary component carrier with the channel quality reaching a first threshold value according to the CQI of the secondary component carrier in the received CQI, schedules the subframe to provide service for the UE, and the subframe is a downlink subframe. It can be seen that, after the carrier aggregation is completed, the process of configuring the CQI by the UE is added, which perfects the implementation of the aggregation process and increases the realizability.
With reference to the first implementation manner of the first aspect of the present invention, in a second implementation manner of the first aspect of the present invention, the CQI further includes a CQI of a primary component carrier, and when the base station acquires channel quality of a secondary component carrier according to the CQI of the secondary component carrier in the CQI, the method further includes: and the base station selects a subframe corresponding to the primary component carrier with the channel quality reaching a second threshold according to the CQI of the primary component carrier in the received CQI, schedules the subframe to provide service for the UE, and the subframe is a downlink subframe.
with reference to the second implementation manner of the first aspect of the present invention, in a third implementation manner of the first aspect of the present invention, the obtaining, by the base station, the channel quality of the primary component carrier according to the CQI of the primary component carrier includes: the base station acquires the channel quality of the primary component carrier according to the CQI of the primary component carrier sent by the UE, wherein the primary component carrier comprises a periodic primary component carrier or an aperiodic primary component carrier. It can be seen that the carrier property of the primary component carrier is refined, the carrier types of the configured CQI of the primary component carrier are increased, and the specific implementation manners are increased.
With reference to the first implementation manner of the first aspect of the present embodiment, in a fourth implementation manner of the first aspect of the present embodiment, the obtaining, by the base station, the channel quality of the secondary component carrier according to the CQI of the secondary component carrier in the CQI includes: and the base station acquires the channel quality of the auxiliary component carrier according to the CQI of the auxiliary component carrier sent by the UE, wherein the auxiliary component carrier comprises a periodic auxiliary component carrier or an aperiodic auxiliary component carrier. It can be seen that the carrier property of the secondary component carrier is refined, the carrier types of the configured secondary component carrier CQI are increased, and specific implementation manners are increased.
a second aspect of an embodiment of the present invention provides a base station, where the base station includes: the first determining unit is used for determining a frequency band of a first preset bandwidth in a Time Division Duplex (TDD) frequency band as a main component carrier; a second determining unit, configured to determine a frequency band of a second preset bandwidth in a frequency division duplex FDD frequency band as an auxiliary component carrier, where the FDD frequency band and the TDD frequency band belong to a same standard frequency band; an aggregation unit configured to aggregate the primary component carrier with the secondary component carrier; and the first scheduling unit is used for scheduling the downlink subframe corresponding to the secondary component carrier when the primary component carrier is in downlink scheduling. It can be seen that, when the primary component carrier is in downlink scheduling, the downlink subframe of the secondary component carrier does not collide with the uplink subframe and the special subframe of the primary component carrier, thereby avoiding spectrum interference generated when only the FDD spectrum and the TDD spectrum of the same standard frequency band are aggregated.
With reference to the second aspect of the present embodiment, in a first implementation manner of the second aspect of the present embodiment, the base station further includes: a sending unit, configured to send an aggregation indication message to a user equipment UE, where the aggregation indication message is used to indicate that the primary component carrier and the secondary component carrier complete aggregation, so that the UE configures a channel quality indication CQI according to the aggregation indication message; a receiving unit, configured to receive a CQI of an aggregated carrier sent by the UE, where when the primary component carrier is in an uplink subframe reported by the CQI, the base station does not schedule a downlink subframe corresponding to a secondary component carrier; and the second scheduling unit is used for acquiring the channel quality of the secondary component carrier according to the CQI of the secondary component carrier in the CQI when the primary component carrier is in downlink scheduling, and scheduling the downlink subframe corresponding to the secondary component carrier of which the channel quality reaches a first threshold. It can be seen that, after the carrier aggregation is completed, the process of configuring the CQI by the UE is added, which perfects the implementation of the aggregation process and increases the realizability.
With reference to the first implementation manner of the second aspect of the present embodiment, in the second implementation manner of the second aspect of the present embodiment, the CQI further includes a CQI of a primary component carrier, and when the base station acquires channel quality of a secondary component carrier according to the CQI of the secondary component carrier in the CQI, the base station further includes: and the third scheduling unit is used for acquiring the channel quality of the primary component carrier according to the CQI of the primary component carrier and scheduling the downlink subframe corresponding to the primary component carrier of which the channel quality reaches a second threshold value. It can be seen that the CQI types sent by the UE are refined, and the implementation of the CQI is increased.
With reference to the second implementation manner of the second aspect of the embodiment of the present invention, in a third implementation manner of the second aspect of the embodiment of the present invention, the third scheduling unit includes: a first obtaining module, configured to obtain channel quality of a primary component carrier according to a CQI of a periodic primary component carrier or a CQI of an aperiodic primary component carrier sent by the UE. It can be seen that the carrier property of the primary component carrier is refined, the carrier types of the configured CQI of the primary component carrier are increased, and the specific implementation manners are increased.
With reference to the first implementation manner of the second aspect of the embodiment of the present invention, in a fourth implementation manner of the second aspect of the embodiment of the present invention, the second scheduling unit includes: a second obtaining module, configured to obtain channel quality of the secondary component carrier according to the CQI of the periodic secondary component carrier or the CQI of the aperiodic secondary component carrier sent by the UE. It can be seen that the carrier property of the secondary component carrier is refined, the carrier types of the configured secondary component carrier CQI are increased, and specific implementation manners are increased.
a third aspect of the present invention provides a base station, where the base station is configured to implement the functions of the method provided in the first aspect or any optional implementation manner of the first aspect, and the base station is implemented by hardware, where the hardware includes units corresponding to the functions.
a fourth aspect of the present invention provides a computer storage medium storing a program for collaborative scheduling according to the first aspect or any one of the optional implementation manners of the first aspect.
A fifth aspect of the present invention provides a database management system, comprising: a base station and a UE, wherein the terminal device is the base station of the second aspect or the third aspect.
According to the technical scheme, the embodiment of the invention has the following advantages:
A base station determines a frequency band of a first preset bandwidth in a Time Division Duplex (TDD) frequency band as a primary component carrier, determines a frequency band of a second preset bandwidth in a Frequency Division Duplex (FDD) frequency band as a secondary component carrier, and the FDD frequency band and the TDD frequency band belong to the same standard frequency band; the base station aggregates the primary component carrier and the secondary component carrier; and when the primary component carrier is in downlink scheduling, the base station schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the downlink subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
Drawings
FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention;
FIG. 2 is a diagram of an embodiment of a method for collaborative scheduling according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another embodiment of a method for collaborative scheduling according to an embodiment of the present invention;
Fig. 4 is a schematic diagram of a specific application scenario of the cooperative scheduling method in the embodiment of the present invention;
Fig. 5 is a schematic diagram of an embodiment of a base station in an embodiment of the present invention;
fig. 6 is a schematic diagram of another embodiment of a base station in the embodiment of the present invention;
Fig. 7 is a schematic diagram of another embodiment of a base station in the embodiment of the present invention;
Fig. 8 is a schematic diagram of another embodiment of a base station in the embodiment of the present invention;
Fig. 9 is a schematic diagram of another embodiment of a base station in the embodiment of the present invention;
fig. 10 is a schematic diagram of another embodiment of the base station in the embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method for cooperative scheduling, which is used for avoiding spectrum interference generated when only FDD spectrum and TDD spectrum of the same standard frequency band are aggregated.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
the embodiment of the present invention can be applied to a network architecture as shown in fig. 1, in which the E-UTRAN includes an eNodeB and other enodebs, and may further include a Multicast Coordination Entity (MCE). An eNodeB may be connected with other enodebs through a backhaul (e.g., X2 interface). The MCE may allocate time-frequency radio resources for the eMBMS and determine a radio configuration (e.g., MCS) for the eMBMS. The MCE may be an entity separate from the eNodeB or may be part of the eNodeB.
the eNodeB provides access for the UE to the EPC, to which the eNodeB is connected. The EPC may include MME, HSS, other MME, SGW, MBMS GW, BM-SC, PGW. The MME is a control node that handles signaling between the UE and the EPC, providing bearer and connection management. All user IP packets are sent through the SGW, and the SGW is connected with the PGW. The PGW provides UE IP address assignment as well as other functions. The PGW and BM-SC are connected to IP services, which may include Internet, intranet, IP Multimedia Subsystem (IMS), PS Streaming Service (PSS), and/or other IP services. The BM-SC may serve the functions of location and delivery for MBMS users. The BM-SC may serve as an entry for content provider MBMS transmissions, may be used within the PLMN to authorize and initiate MBMS bearer services, and may also be used to schedule and deliver MBMS transmissions. The MBMS Gateway can be used as an eNodeB for distributing MBMS services to MBSFN areas belonging to one broadcast specific service, and can also be used for call back management (start/stop) and collecting eMBMS related charging information.
the UE is capable of signal communication through an LTE network and a millimeter wave (mmW) system. Thus, the UE may communicate with the eNodeB and/or other enodebs over the LTE link. In addition, the communication may also be performed with other Connection Points (CPs) or base stations via mmW links.
In the embodiment of the invention, a base station determines a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier and determines a frequency band of a second preset bandwidth in an FDD frequency band as a secondary component carrier; the base station aggregates the primary component carrier and the secondary component carrier; and when the primary component carrier is in downlink scheduling, the base station schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the downlink subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
referring to fig. 2, an embodiment of a method for cooperative scheduling according to the embodiment of the present invention includes:
201. the base station determines a frequency band of a first preset bandwidth in a Time Division Duplex (TDD) frequency band as a main component carrier.
the base station determines the size of a first preset bandwidth according to a preset rule, selects a frequency band with the first preset bandwidth size from a TDD frequency band and takes the frequency band as a main component carrier; the base station determines the frequency band outside the main component carrier in the TDD frequency band as an isolated frequency band, and the isolated frequency band is used for suppressing the interference between frequency spectrums.
202. And the base station determines a frequency band of a second preset bandwidth in the frequency division duplex FDD frequency band as an auxiliary component carrier.
and the base station determines the size of a second preset bandwidth according to a preset rule, selects a frequency band with the second preset bandwidth size from the FDD frequency band and takes the frequency band as an auxiliary component carrier. The secondary component carrier and the primary component carrier belong to the same standard frequency band, which may be 2600M standard frequency band, or other standard frequency bands, such as 2100M standard frequency band, and the details are not limited herein.
203. the base station aggregates the primary component carrier with the secondary component carrier.
and the base station gathers the determined primary component carrier and the secondary component carrier together by utilizing a carrier aggregation technology according to a preset rule.
204. and when the primary component carrier is in downlink scheduling, the base station schedules a downlink subframe corresponding to the secondary component carrier.
and the base station schedules the downlink subframe of the secondary component carrier when the primary component carrier is in a downlink scheduling state according to the service requirement, wherein the downlink subframe corresponds to the downlink subframe of the primary component carrier and does not conflict with the uplink subframe and the special subframe of the primary component carrier.
The base station determines a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier, determines a frequency band of a second preset bandwidth in an FDD frequency band as a secondary component carrier, and the FDD frequency band and the TDD frequency band belong to the same standard frequency band; the base station aggregates the primary component carrier and the secondary component carrier; and when the primary component carrier is in downlink scheduling, the base station schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the downlink subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
referring to fig. 3, another embodiment of the method for cooperative scheduling according to the embodiment of the present invention includes:
301. the base station determines a frequency band of a first preset bandwidth in a Time Division Duplex (TDD) frequency band as a main component carrier.
302. And the base station determines a frequency band of a second preset bandwidth in the frequency division duplex FDD frequency band as an auxiliary component carrier.
303. The base station aggregates the primary component carrier with the secondary component carrier.
steps 301 to 303 in this embodiment are similar to steps 201 to 203 in the embodiment shown in fig. 2, and are not described herein again.
304. And the base station sends an aggregation indication message to the user equipment UE.
the base station determines UE needing to use the aggregated carrier, and sends a message of carrier aggregation completion to the UE, so that the UE configures Channel Quality Indication (CQI) information according to the aggregation indication message, and the base station schedules a primary component carrier and an auxiliary component carrier for the UE according to the CQI information.
305. and the UE configures the CQI according to the aggregation indication message.
And the UE receives the aggregation indication message sent by the base station, the UE configures the CQI of the aggregated carrier according to the message, and when the main component carrier is in the uplink subframe reported by the CQI, the base station does not schedule the downlink subframe corresponding to the auxiliary component carrier.
306. The base station receives the CQI of the periodic primary component carrier or the CQI of the aperiodic primary component carrier transmitted by the UE.
the base station receives CQI information sent by the UE, the CQI information being generated according to an aggregation indication message sent by the base station, the CQI information including CQI of a primary component carrier, which may be a periodic carrier or an aperiodic carrier.
307. And the base station receives the CQI of the periodic secondary component carrier or the CQI of the aperiodic secondary component carrier sent by the UE.
the base station receives CQI information sent by the UE, the CQI information is generated according to an aggregation indication message sent by the base station, the CQI information comprises CQI of a secondary component carrier, and the secondary component carrier can be a periodic carrier or an aperiodic carrier.
308. And when the primary component carrier is in downlink scheduling, the base station schedules the downlink subframe corresponding to the secondary component carrier according to the received CQI.
and the UE has the capability of using the aggregated carrier service, and when the UE needs to use the aggregated carrier, the base station acquires the channel quality of the carrier according to the received CQI information and starts to schedule the aggregated carrier. On the basis of scheduling the primary component carrier, when the primary component carrier is in downlink scheduling, the base station schedules a downlink subframe corresponding to the secondary component carrier of which the channel quality reaches a first threshold. And when the primary component carrier is in downlink scheduling, the base station also schedules a downlink subframe corresponding to the primary component carrier of which the channel quality reaches a second threshold.
The base station determines a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier, determines a frequency band of a second preset bandwidth in an FDD frequency band as a secondary component carrier, and the FDD frequency band and the TDD frequency band belong to the same standard frequency band; the base station aggregates the primary component carrier and the secondary component carrier; and when the primary component carrier is in downlink scheduling, the base station schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the downlink subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
For ease of understanding, the present embodiment is described below with reference to specific application scenarios:
Different countries have different divisions of the spectrum, and the following detailed description is based on the spectral division standard of Poland. As shown in fig. 4, polish divides the spectrum of the 2600M standard band into three different operators, namely operator a, operator B and operator C, wherein operator a owns both band7(FDD) and band38(TDD), and operator B and operator C only own one band38(TDD) spectrum in the 2600M standard band. Operator a owns both band7(FDD) and band38(TDD) spectrum, so it can aggregate both spectra.
An operator a has a TDD spectrum 50M and FDD spectrum uplink and downlink 20M, when a user equipment UE needs to use a carrier aggregation service function, a base station K of the operator a determines a spectrum with a size of 40M in the TDD spectrum as a primary component carrier, the base station K determines a spectrum with a size of 20M in the uplink and downlink in the FDD spectrum as a secondary component carrier, and the base station K determines a remaining TDD spectrum with a size of 10M as an isolated frequency band, so as to reduce interference between the spectrums. The sizes of the primary component carrier and the secondary component carrier may be preset according to the actual needs of the operator.
a base station K aggregates a primary component carrier and a secondary component carrier; a base station K sends an aggregation indication message of carrier aggregation completion to UE, after receiving the aggregation indication message, the UE starts to configure CQI information, wherein the CQI information comprises a periodic CQI of a primary component carrier and a periodic CQI of a secondary component carrier, and the base station K schedules the secondary component carrier according to the received CQI information;
when the primary component carrier is in downlink scheduling, the base station K schedules a downlink subframe of the secondary component carrier of which the channel quality reaches a first threshold, and the called downlink subframe of the secondary component carrier does not conflict with an uplink subframe and a special subframe of the primary component carrier. In other words, when the primary component carrier is in downlink scheduling, the base station K only calls a part of downlink subframes corresponding to the primary component carrier downlink subframes in the secondary component carrier. When the primary component carrier is in downlink scheduling, the base station K may schedule the uplink subframe of the secondary component carrier, and may not schedule the downlink subframe of the secondary component carrier. And the base station K sends the scheduling information to the UE, and the UE can use the frequency spectrum scheduled by the base station K for network service.
In the above description of the method for cooperative scheduling in the embodiment of the present invention, referring to fig. 5, a base station in the embodiment of the present invention is described below, where the base station in the embodiment of the present invention includes:
A first determining unit 501, configured to determine a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier;
a second determining unit 502, configured to determine a frequency band of a second preset bandwidth in a frequency division duplex FDD frequency band as an auxiliary component carrier, where the FDD frequency band and the TDD frequency band belong to the same standard frequency band;
an aggregation unit 503, configured to aggregate the primary component carrier and the secondary component carrier;
A first scheduling unit 504, configured to schedule a downlink subframe corresponding to the secondary component carrier when the primary component carrier is in downlink scheduling.
In the embodiment of the present invention, a first determining unit 501 determines a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier, and a second determining unit 502 determines a frequency band of a second preset bandwidth in an FDD frequency band as a secondary component carrier; an aggregation unit 503 aggregates the primary component carrier and the secondary component carrier; when the primary component carrier is in downlink scheduling, the first scheduling unit 504 schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
referring to fig. 6, another embodiment of a base station in the embodiment of the present invention includes:
A first determining unit 601, configured to determine a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier;
A second determining unit 602, configured to determine a frequency band of a second preset bandwidth in a frequency division duplex FDD frequency band as an auxiliary component carrier, where the FDD frequency band and the TDD frequency band belong to the same standard frequency band;
An aggregation unit 603 configured to aggregate the primary component carrier and the secondary component carrier;
The first scheduling unit 604 is configured to schedule a downlink subframe corresponding to the secondary component carrier when the primary component carrier is in downlink scheduling.
In this embodiment, the base station may further include:
A sending unit 605, configured to send an aggregation indication message to a user equipment UE, where the aggregation indication message is used to indicate that a primary component carrier and a secondary component carrier complete aggregation, so that the UE configures a channel quality indication CQI according to the aggregation indication message;
a receiving unit 606, configured to receive a CQI of an aggregated carrier sent by a UE, where when a primary component carrier is in an uplink subframe reported by the CQI, a base station does not schedule a downlink subframe corresponding to a secondary component carrier;
A second scheduling unit 607, configured to, when the primary component carrier is in downlink scheduling, obtain the channel quality of the secondary component carrier according to the CQI of the secondary component carrier in the CQI, and schedule a downlink subframe corresponding to the secondary component carrier whose channel quality reaches the first threshold.
in the embodiment of the present invention, a first determining unit 601 determines a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier, and a second determining unit 602 determines a frequency band of a second preset bandwidth in an FDD frequency band as a secondary component carrier; the aggregation unit 603 aggregates the primary component carrier and the secondary component carrier; when the primary component carrier is in downlink scheduling, the first scheduling unit 604 schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
Referring to fig. 7, another embodiment of a base station in the embodiment of the present invention includes:
A first determining unit 701, configured to determine a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier;
a second determining unit 702, configured to determine a frequency band of a second preset bandwidth in a frequency division duplex FDD frequency band as an auxiliary component carrier, where the FDD frequency band and the TDD frequency band belong to the same standard frequency band;
An aggregation unit 703 configured to aggregate the primary component carrier and the secondary component carrier;
A first scheduling unit 704, configured to schedule a downlink subframe corresponding to the secondary component carrier when the primary component carrier is in downlink scheduling.
In this embodiment, the base station may further include:
A sending unit 705, configured to send an aggregation indication message to a user equipment UE, where the aggregation indication message is used to indicate that a primary component carrier and a secondary component carrier complete aggregation, so that the UE configures a channel quality indication CQI according to the aggregation indication message;
A receiving unit 706, configured to receive a CQI of an aggregated carrier sent by a UE, where when a primary component carrier is in an uplink subframe reported by the CQI, a base station does not schedule a downlink subframe corresponding to a secondary component carrier;
The second scheduling unit 707 is configured to, when the primary component carrier is in downlink scheduling, obtain the channel quality of the secondary component carrier according to the CQI of the secondary component carrier in the CQI, and schedule a downlink subframe corresponding to the secondary component carrier whose channel quality reaches a first threshold.
The third scheduling unit 708 is configured to obtain the channel quality of the primary component carrier according to the CQI of the primary component carrier, and schedule the downlink subframe corresponding to the primary component carrier whose channel quality reaches the second threshold.
In the embodiment of the present invention, a first determining unit 701 determines a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier, and a second determining unit 702 determines a frequency band of a second preset bandwidth in an FDD frequency band as a secondary component carrier; the aggregation unit 703 aggregates the primary component carrier and the secondary component carrier; when the primary component carrier is in downlink scheduling, the first scheduling unit 704 schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
referring to fig. 8, another embodiment of a base station in the embodiment of the present invention includes:
A first determining unit 801, configured to determine a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier;
A second determining unit 802, configured to determine a frequency band of a second preset bandwidth in a frequency division duplex FDD frequency band as an auxiliary component carrier, where the FDD frequency band and the TDD frequency band belong to the same standard frequency band;
An aggregation unit 803 configured to aggregate the primary component carrier with the secondary component carrier;
A first scheduling unit 804, configured to schedule a downlink subframe corresponding to a secondary component carrier when the primary component carrier is in downlink scheduling.
In this embodiment, the base station may further include:
a sending unit 805, configured to send an aggregation indication message to a user equipment UE, where the aggregation indication message is used to indicate that a primary component carrier and a secondary component carrier complete aggregation, so that the UE configures a channel quality indication CQI according to the aggregation indication message;
A receiving unit 806, configured to receive a CQI of an aggregated carrier sent by a UE, where when a primary component carrier is in an uplink subframe reported by the CQI, a base station does not schedule a downlink subframe corresponding to a secondary component carrier;
the second scheduling unit 807, when the primary component carrier is in downlink scheduling, is configured to obtain the channel quality of the secondary component carrier according to the CQI of the secondary component carrier in the CQI, and schedule a downlink subframe corresponding to the secondary component carrier whose channel quality reaches the first threshold.
a third scheduling unit 808, configured to obtain the channel quality of the primary component carrier according to the CQI of the primary component carrier, and schedule a downlink subframe corresponding to the primary component carrier whose channel quality reaches a second threshold.
wherein the third scheduling unit 808 includes:
A first obtaining module 8081, configured to obtain the channel quality of the primary component carrier according to the CQI of the periodic primary component carrier or the CQI of the aperiodic primary component carrier sent by the UE.
in the embodiment of the present invention, a first determining unit 801 determines a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier, and a second determining unit 802 determines a frequency band of a second preset bandwidth in an FDD frequency band as a secondary component carrier; an aggregation unit 803 aggregates the primary component carrier with the secondary component carrier; when the primary component carrier is in downlink scheduling, the first scheduling unit 804 schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
Referring to fig. 9, another embodiment of a base station in the embodiment of the present invention includes:
A first determining unit 901, configured to determine a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier;
A second determining unit 902, configured to determine a frequency band of a second preset bandwidth in a frequency division duplex FDD frequency band as an auxiliary component carrier, where the FDD frequency band and the TDD frequency band belong to the same standard frequency band;
An aggregation unit 903 configured to aggregate the primary component carrier and the secondary component carrier;
a first scheduling unit 904, configured to schedule a downlink subframe corresponding to the secondary component carrier when the primary component carrier is in downlink scheduling.
in this embodiment, the base station may further include:
A sending unit 905, configured to send an aggregation indication message to a user equipment UE, where the aggregation indication message is used to indicate that a primary component carrier and a secondary component carrier complete aggregation, so that the UE configures a channel quality indication CQI according to the aggregation indication message;
A receiving unit 906, configured to receive a CQI of an aggregated carrier sent by a UE, where when a primary component carrier is in an uplink subframe reported by the CQI, a base station does not schedule a downlink subframe corresponding to a secondary component carrier;
a second scheduling unit 907, configured to, when the primary component carrier is in downlink scheduling, obtain channel quality of the secondary component carrier according to a CQI of the secondary component carrier in the CQI, and schedule a downlink subframe corresponding to the secondary component carrier whose channel quality reaches a first threshold.
A third scheduling unit 908, configured to obtain the channel quality of the primary component carrier according to the CQI of the primary component carrier, and schedule a downlink subframe corresponding to the primary component carrier whose channel quality reaches a second threshold.
The second scheduling unit 907 includes:
A second obtaining module 9071, configured to obtain channel quality of the secondary component carrier according to the CQI of the periodic secondary component carrier or the CQI of the aperiodic secondary component carrier sent by the UE.
In the embodiment of the present invention, a first determining unit 901 determines a frequency band of a first preset bandwidth in a TDD frequency band as a primary component carrier, and a second determining unit 902 determines a frequency band of a second preset bandwidth in an FDD frequency band as a secondary component carrier; an aggregation unit 903 aggregates the primary component carrier and the secondary component carrier; when the primary component carrier is in downlink scheduling, the first scheduling unit 904 schedules a downlink subframe corresponding to the secondary component carrier. The base station ensures that the subframe of the scheduled secondary component carrier after carrier aggregation does not conflict with the special subframe and the uplink subframe of the primary component carrier, and avoids the frequency spectrum interference generated when only the FDD frequency spectrum and the TDD frequency spectrum of the same standard frequency band are aggregated.
Fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention, where the base station 1000 may have a relatively large difference due to different configurations or performances, and may include one or more Central Processing Units (CPUs) 1022 (e.g., one or more processors) and a memory 1032, and one or more storage media 1030 (e.g., one or more mass storage devices) storing an application 1042 or data 1044. Memory 1032 and storage medium 1030 may be, among other things, transient or persistent storage. The program stored on the storage medium 1030 may include one or more modules (not shown), each of which may include a series of instruction operations for the base station. Still further, the central processor 1022 may be configured to communicate with the storage medium 1030 to execute a series of instruction operations in the storage medium 1030 on the base station 1000.
the base station 1000 may also include one or more power supplies 1026, one or more wired or wireless network interfaces 1050, one or more input-output interfaces 1058, and/or one or more operating systems 1041, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
The method embodiments of cooperative scheduling described in fig. 2 to fig. 4 may be implemented based on the base station structure shown in fig. 10.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
in the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for coordinated scheduling, comprising:
a base station determines a frequency band of a first preset bandwidth in a Time Division Duplex (TDD) frequency band as a main component carrier;
the base station determines a frequency band of a second preset bandwidth in a Frequency Division Duplex (FDD) frequency band as an auxiliary component carrier, wherein the FDD frequency band and the TDD frequency band belong to the same standard frequency band;
The base station aggregating the primary component carrier with the secondary component carrier;
When the primary component carrier is in downlink scheduling, the base station schedules a downlink subframe corresponding to a secondary component carrier, wherein the downlink subframe of the secondary component carrier corresponds to the downlink subframe of the primary component carrier and does not conflict with an uplink subframe and a special subframe of the primary component carrier;
after the base station aggregates the primary component carrier and the secondary component carrier, the method further includes: the base station sends an aggregation indication message to User Equipment (UE), wherein the aggregation indication message is used for indicating that the primary component carrier and the secondary component carrier complete aggregation, so that the UE configures Channel Quality Indication (CQI) according to the aggregation indication message;
The base station receives a CQI of an aggregated carrier sent by the UE, and when the primary component carrier is in an uplink subframe reported by the CQI, the base station does not schedule a downlink subframe corresponding to a secondary component carrier;
And when the primary component carrier is in downlink scheduling, the base station acquires the channel quality of the secondary component carrier according to the CQI of the secondary component carrier in the CQI, and schedules a downlink subframe corresponding to the secondary component carrier of which the channel quality reaches a first threshold value.
2. The method of claim 1, wherein the CQI further includes a CQI of a primary component carrier, and when the base station acquires the channel quality of a secondary component carrier according to the CQI of the secondary component carrier in the CQI, the method further includes:
And the base station acquires the channel quality of the primary component carrier according to the CQI of the primary component carrier and schedules a downlink subframe corresponding to the primary component carrier of which the channel quality reaches a second threshold value.
3. the method of claim 2, wherein the base station obtaining the channel quality of the primary component carrier according to the CQI of the primary component carrier comprises:
and the base station acquires the channel quality of the primary component carrier according to the CQI of the periodic primary component carrier or the CQI of the aperiodic primary component carrier sent by the UE.
4. the method of claim 1, wherein the base station obtaining the channel quality of the secondary component carrier according to the CQI of the secondary component carrier in the CQI comprises:
And the base station acquires the channel quality of the secondary component carrier according to the CQI of the periodic secondary component carrier or the CQI of the aperiodic secondary component carrier sent by the UE.
5. a base station, comprising:
the first determining unit is used for determining a frequency band of a first preset bandwidth in a Time Division Duplex (TDD) frequency band as a main component carrier;
A second determining unit, configured to determine a frequency band of a second preset bandwidth in a frequency division duplex FDD frequency band as an auxiliary component carrier, where the FDD frequency band and the TDD frequency band belong to a same standard frequency band;
an aggregation unit configured to aggregate the primary component carrier with the secondary component carrier;
a first scheduling unit, configured to schedule a downlink subframe corresponding to a secondary component carrier when the primary component carrier is in downlink scheduling, where the downlink subframe of the secondary component carrier corresponds to the downlink subframe of the primary component carrier and does not conflict with both an uplink subframe and a special subframe of the primary component carrier; the base station further comprises:
A sending unit, configured to send an aggregation indication message to a user equipment UE, where the aggregation indication message is used to indicate that the primary component carrier and the secondary component carrier complete aggregation, so that the UE configures a channel quality indication CQI according to the aggregation indication message;
a receiving unit, configured to receive a CQI of an aggregated carrier sent by the UE, where when the primary component carrier is in an uplink subframe reported by the CQI, the base station does not schedule a downlink subframe corresponding to a secondary component carrier;
And the second scheduling unit is used for acquiring the channel quality of the secondary component carrier according to the CQI of the secondary component carrier in the CQI when the primary component carrier is in downlink scheduling, and scheduling the downlink subframe corresponding to the secondary component carrier of which the channel quality reaches a first threshold.
6. the base station according to claim 5, wherein the CQI further includes a CQI of a primary component carrier, and when the base station acquires the channel quality of a secondary component carrier according to the CQI of the secondary component carrier in the CQI, the base station further includes:
And the third scheduling unit is used for acquiring the channel quality of the primary component carrier according to the CQI of the primary component carrier and scheduling the downlink subframe corresponding to the primary component carrier of which the channel quality reaches a second threshold value.
7. The base station of claim 6, wherein the third scheduling unit comprises:
A first obtaining module, configured to obtain channel quality of a primary component carrier according to a CQI of a periodic primary component carrier or a CQI of an aperiodic primary component carrier sent by the UE.
8. The base station of claim 6, wherein the second scheduling unit comprises:
A second obtaining module, configured to obtain channel quality of the secondary component carrier according to the CQI of the periodic secondary component carrier or the CQI of the aperiodic secondary component carrier sent by the UE.
9. A base station, characterized in that the base station comprises:
the device comprises an input device, an output device, a central processing unit, a memory and a bus;
The input device, the output device, the central processor and the memory are connected through the bus;
The central processor invokes program instructions in the memory to cause the base station to perform the method of cooperative scheduling according to any of claims 1 to 4.
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| CN201610863948.9A CN106412989B (en) | 2016-09-29 | 2016-09-29 | Cooperative scheduling method and base station |
| PCT/CN2017/092347 WO2018059064A1 (en) | 2016-09-29 | 2017-07-10 | Cooperative scheduling method and base station |
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| CN111132340A (en) * | 2019-12-23 | 2020-05-08 | 维沃移动通信有限公司 | Time slot adjusting method, electronic device and computer readable storage medium |
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| CN104685817A (en) * | 2012-09-24 | 2015-06-03 | 高通股份有限公司 | Method and apparatus for supporting hybrid carrier aggregation |
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| CN102958064B (en) * | 2011-08-18 | 2016-05-25 | 中国移动通信集团公司 | In carrier aggregation system, reduce the method, system and device that disturb |
| US9584284B2 (en) * | 2013-09-26 | 2017-02-28 | Qualcomm Incorporated | Simplified FDD-TDD carrier aggregation |
| US10271313B2 (en) * | 2015-03-10 | 2019-04-23 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for selecting and adapting carrier aggregation configurations |
| CN106412989B (en) * | 2016-09-29 | 2019-12-17 | 上海华为技术有限公司 | Cooperative scheduling method and base station |
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| CN102413505A (en) * | 2010-09-21 | 2012-04-11 | 夏普株式会社 | Downlink ACK (acknowledgement)/NACK (negative acknowledgement) feedback resource allocation method and corresponding base station and user equipment |
| CN104685817A (en) * | 2012-09-24 | 2015-06-03 | 高通股份有限公司 | Method and apparatus for supporting hybrid carrier aggregation |
| CN104349487A (en) * | 2013-08-09 | 2015-02-11 | 上海贝尔股份有限公司 | Method and device for cross-carrier multi-sub-frame scheduling of TDD (time division duplex)-FDD (frequency division duplex) combined system |
| CN104811411A (en) * | 2014-01-26 | 2015-07-29 | 中国移动通信集团公司 | Data transmission method, device and system |
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