CN106612547B - Scheduling method and base station supporting non-standard bandwidth - Google Patents
Scheduling method and base station supporting non-standard bandwidth Download PDFInfo
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- CN106612547B CN106612547B CN201510688842.5A CN201510688842A CN106612547B CN 106612547 B CN106612547 B CN 106612547B CN 201510688842 A CN201510688842 A CN 201510688842A CN 106612547 B CN106612547 B CN 106612547B
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- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
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- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
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Abstract
The invention discloses a scheduling method and a base station supporting non-standard bandwidth, comprising the following steps: the base station configures a first system bandwidth and a second system bandwidth, and issues the second system bandwidth to the terminal through broadcast information, wherein the first system bandwidth minus the second system bandwidth is an extended bandwidth; when the terminal accesses the cell in the second system bandwidth, receiving indication information which is sent by the terminal and used for indicating whether the terminal supports the non-standard bandwidth; and when the terminal is determined to support the non-standard bandwidth according to the indication information, issuing a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth, wherein the cross-carrier scheduling identifier is used for indicating the terminal to schedule on the extended bandwidth and/or the second system bandwidth.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a scheduling method and a base station supporting a non-standard bandwidth.
Background
Certain standard bandwidths are defined in some standards for network architectures, such as the third generation partnership project (3GPP, 3)rdLong Term Evolution (LTE) in the Generation Partnership Project) standard defines cell bandwidths for six standards, 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20 MHz.
In practical applications, the bandwidth owned by the operator may not be the standard bandwidth. To be able to use an LTE network, operators have to use a standard bandwidth that is smaller than the bandwidth they own. For example, an operator has a bandwidth of 12MHz, and finally the operator can only use a standard bandwidth of 10MHz, and the remaining 2MHz bandwidth causes a waste of spectrum resources.
By utilizing the prior art, two schemes are provided for solving the problem that the frequency spectrum resources cannot be effectively utilized when an operator owns a non-standard bandwidth:
the first scheme is as follows: the non-standard bandwidth is divided into the combination of the standard bandwidths, and then the two standard bandwidths are aggregated by adopting a carrier aggregation mode. This approach has certain limitations, i.e., the non-standard bandwidth owned by the operator cannot necessarily be split exactly into a combination of several standard bandwidths. As described above, an operator has an air interface bandwidth of 12MHz, and in order to fully utilize spectrum resources, the air interface bandwidth can be only divided into a combination of standard bandwidths of 10MHz and 1.4MHz, or a part of spectrum resources are wasted and not all bandwidth combinations can be subjected to carrier aggregation, and at the same time, hardware equipment may need to be added, which results in an increase in cost.
Scheme II: in order to reduce and avoid the interference of adjacent frequencies, a certain bandwidth is reserved at both ends of each standard bandwidth in the LTE protocol as a protection bandwidth, and useful data is not transmitted. In order to fully utilize the owned non-standard bandwidth, the standard bandwidth may be strictly filtered, so that the standard bandwidth is reserved with a guard bandwidth smaller than the standard guard bandwidth. If an operator has a 19.2MHz non-standard bandwidth, because the standard protection bandwidth of the 20MHz bandwidth is 1MHz, the middle 18MHz is used to transmit useful data, and after strict filtering, the protection bandwidths at the two ends of the 18MHz bandwidth are smaller than 1MHz, and the protection bandwidth after filtering is 0.6MHz, the 19.2MHz non-standard bandwidth can be used. The scheme is only suitable for the scene that the nonstandard bandwidth is slightly smaller than the standard bandwidth, and can not meet the requirement of diversified nonstandard bandwidth.
The two schemes for solving the frequency spectrum resource waste have certain limitations and cannot meet the requirement of diversified non-standard bandwidths.
Disclosure of Invention
In order to solve the above technical problem, embodiments of the present invention provide a scheduling method and a base station supporting a non-standard bandwidth.
The scheduling method supporting the non-standard bandwidth provided by the embodiment of the invention is applied to a base station, and the method comprises the following steps:
configuring a first system bandwidth and a second system bandwidth;
the second system bandwidth is sent to a terminal through broadcast information, wherein the first system bandwidth minus the second system bandwidth is an extended bandwidth;
when the terminal accesses the cell in the second system bandwidth, receiving indication information which is sent by the terminal and used for indicating whether the terminal supports the nonstandard bandwidth;
and when the terminal is determined to support the non-standard bandwidth according to the indication information, issuing a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth, wherein the cross-carrier scheduling identifier is used for indicating the terminal to schedule on the extended bandwidth and/or the second system bandwidth.
In the embodiment of the present invention, the method further includes:
for a terminal supporting a non-standard bandwidth, allocating a Physical Resource Block (PRB) to the terminal in the extended bandwidth or the second system bandwidth, and when the PRB of the extended bandwidth or the second system bandwidth cannot meet the terminal requirement, issuing a Medium access Control Element (MAC CE) to the terminal to notify the terminal to allocate the PRB to the terminal in the extended bandwidth and the second system bandwidth at the same time.
In the embodiment of the present invention, the method further includes: when the extended bandwidth or the second system bandwidth is separately scheduled, a PDCCH is issued within a Transmission Time Interval (TTI) to schedule the resource of the extended bandwidth or the second system bandwidth;
when the extended bandwidth and the second system bandwidth are scheduled simultaneously, two PDCCHs are issued in one TTI to schedule the resources of the extended bandwidth and the second system bandwidth respectively, the DCI format in the PDCCH supports cross-carrier scheduling, and the DCI distinguishes the PDCCH scheduled by the extended bandwidth resources and the PDCCH scheduled by the second system bandwidth resources by the increased CIF identification bit.
In the embodiment of the present invention, the method further includes:
and when the resources of the extended bandwidth and the second system bandwidth are scheduled at the same time, according to the PRB utilization rate on each system bandwidth and the requirement of the terminal on the PRB, when the PRB of the extended bandwidth or the second system bandwidth is used independently and can meet the requirement of the terminal, the MAC CE is issued to the terminal so as to inform the terminal to allocate the PRB to the terminal only in the extended bandwidth or the second system bandwidth.
In the embodiment of the present invention, when configuring a first system bandwidth and a second system bandwidth, a location identifier of the extended bandwidth and the second system bandwidth is also configured, where the location identifier represents a preset location relationship between the extended bandwidth and the second system bandwidth.
In this embodiment of the present invention, the issuing the second system bandwidth to the terminal through broadcast information includes:
issuing a downlink second system bandwidth in a Master Information Block (MIB);
issuing an uplink second System bandwidth in a System message Block 2(SIB2, System Information Block 2);
when the SIB2 does not have the uplink second system bandwidth, the downlink second system bandwidth is the same as the uplink second system bandwidth.
In an embodiment of the present invention, the method further includes:
for a terminal supporting a non-standard bandwidth, at least the following information is issued in a reconfiguration message: the first system bandwidth, the extended bandwidth, the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal calculates the extended bandwidth and the location thereof.
In the embodiment of the present invention, the method further includes:
for a terminal supporting a non-standard bandwidth, calculating the extended bandwidth according to the second system bandwidth and the first system bandwidth;
issuing in a reconfiguration message at least the following information: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and the location thereof.
In the embodiment of the present invention, the method further includes:
at least the following information is issued in the broadcast information SIB 2: the first system bandwidth, the extended bandwidth and the second system bandwidth are identified in position, so that the terminal can calculate the extended bandwidth and the position thereof;
and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
In the embodiment of the present invention, the method further includes:
calculating to obtain the extended bandwidth according to the second system bandwidth and the first system bandwidth;
at least the following information is issued in the broadcast information SIB 2: expanding the bandwidth, the expanded bandwidth and the position identification of the second system bandwidth so that the terminal obtains the expanded bandwidth and the position of the expanded bandwidth;
and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
In the embodiment of the present invention, the method further includes:
judging whether the extended bandwidth meets the terminal requirement, and if so, allocating PRB to the terminal in the extended bandwidth;
when the extended bandwidth does not meet the terminal requirement, judging whether the second system bandwidth meets the terminal requirement, and when the second system bandwidth meets the terminal requirement, allocating PRB to the terminal in the second system bandwidth;
and when the second system bandwidth does not meet the requirement of the terminal, allocating PRB to the terminal at the extended bandwidth and the second system bandwidth simultaneously.
The base station provided by the embodiment of the invention comprises:
the device comprises a configuration unit, a first processing unit and a second processing unit, wherein the configuration unit is used for configuring a first system bandwidth and a second system bandwidth, and the first system bandwidth minus the second system bandwidth is an extended bandwidth;
the issuing unit is used for issuing the second system bandwidth to a terminal through broadcast information;
a receiving unit, configured to receive, when a terminal accesses a cell in the second system bandwidth, indication information sent by the terminal and used for indicating whether the terminal supports a non-standard bandwidth;
the issuing unit is further configured to issue a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth when it is determined that the terminal supports the non-standard bandwidth according to the indication information, where the cross-carrier scheduling identifier is used to indicate that the terminal schedules on the extended bandwidth and/or the second system bandwidth.
In the embodiment of the present invention, the base station further includes:
and the allocating unit is used for allocating PRBs to the terminal at the extended bandwidth or the second system bandwidth for the terminal supporting the non-standard bandwidth, and when the PRBs of the extended bandwidth or the second system bandwidth cannot meet the terminal requirement, issuing an MAC CE to the terminal to inform the terminal of allocating the PRBs to the terminal at the extended bandwidth and the second system bandwidth simultaneously.
In this embodiment of the present invention, the issuing unit is further configured to issue a PDCCH within a TTI to schedule the resource of the extended bandwidth or the second system bandwidth when the extended bandwidth or the second system bandwidth is separately scheduled; when the extended bandwidth and the second system bandwidth are scheduled simultaneously, two PDCCHs are issued in one TTI to schedule the resources of the extended bandwidth and the second system bandwidth respectively, the DCI format in the PDCCH supports cross-carrier scheduling, and the DCI distinguishes the PDCCH scheduled by the extended bandwidth resources and the PDCCH scheduled by the second system bandwidth resources by the increased CIF identification bit.
In the embodiment of the present invention, the base station further includes:
and the dynamic allocation unit is used for simultaneously scheduling resources of the extended bandwidth and the second system bandwidth, and when the PRB of the extended bandwidth or the second system bandwidth is independently used and can meet the requirement of the terminal on the PRB according to the utilization rate of the PRB on each system bandwidth and the requirement of the terminal on the PRB, sending an MAC CE to the terminal so as to inform the terminal to allocate the PRB to the terminal only in the extended bandwidth or the second system bandwidth. .
In this embodiment of the present invention, the configuration unit is further configured to, when configuring a first system bandwidth and a second system bandwidth, further configure location identifiers of the extended bandwidth and the second system bandwidth, where the location identifiers represent a preset location relationship between the extended bandwidth and the second system bandwidth.
In the embodiment of the present invention, the issuing unit is further configured to issue a downlink second system bandwidth in the MIB; issuing an uplink second system bandwidth in an SIB 2; when the SIB2 does not have the uplink second system bandwidth, the downlink second system bandwidth is the same as the uplink second system bandwidth.
In this embodiment of the present invention, the issuing unit is further configured to issue, in the reconfiguration message, at least the following information for a terminal supporting a non-standard bandwidth: the first system bandwidth, the extended bandwidth, the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal calculates the extended bandwidth and the location thereof.
In the embodiment of the present invention, the base station further includes:
a calculating unit, configured to calculate, for a terminal that supports a non-standard bandwidth, the extended bandwidth according to the second system bandwidth and the first system bandwidth;
the issuing unit is further configured to issue at least the following information in the reconfiguration message: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and the location thereof.
In this embodiment of the present invention, the issuing unit is further configured to issue at least the following information in the broadcast information SIB 2: the first system bandwidth, the extended bandwidth and the second system bandwidth are identified in position, so that the terminal can calculate the extended bandwidth and the position thereof; and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
In the embodiment of the present invention, the base station further includes:
the calculation unit is used for calculating the extended bandwidth according to the second system bandwidth and the first system bandwidth;
the issuing unit is further configured to issue at least the following information in the broadcast information SIB 2: expanding the bandwidth, the expanded bandwidth and the position identification of the second system bandwidth so that the terminal obtains the expanded bandwidth and the position of the expanded bandwidth; and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
In the embodiment of the present invention, the base station further includes:
a first judging unit, configured to judge whether the extended bandwidth meets the terminal requirement, and if so, allocate a PRB to the terminal in the extended bandwidth;
a second determining unit, configured to determine whether the second system bandwidth meets the terminal requirement when the extended bandwidth does not meet the terminal requirement, and allocate a PRB to the terminal in the second system bandwidth when the second system bandwidth meets the terminal requirement; and when the second system bandwidth does not meet the requirement of the terminal, allocating PRB to the terminal at the extended bandwidth and the second system bandwidth simultaneously.
In the technical scheme of the embodiment of the invention, the base station is configured with two system bandwidths, the actual bandwidth owned by an operator is called a first system bandwidth, the standard bandwidth smaller than the first system bandwidth is called a second system bandwidth, and the difference between the first system bandwidth and the second system bandwidth is called an extended bandwidth. And the base station transmits the second system bandwidth to the terminal through broadcast information. The terminal searches broadcast information, when accessing a cell, if the terminal supports the non-standard bandwidth, the terminal is sent to support the non-standard bandwidth, if the terminal does not support the non-standard bandwidth, the base station considers that the terminal only supports the standard bandwidth; for a terminal supporting a non-standard bandwidth, a base station issues a cross-carrier scheduling identifier, and the terminal can use a Physical Downlink Control Channel (PDCCH) in a second system bandwidth to schedule a PRB on the second system bandwidth and/or an extended bandwidth; for a terminal supporting a non-standard bandwidth, a base station firstly allocates PRB to the terminal in an extended bandwidth or a second system bandwidth independently, if the PRB which uses the extended bandwidth or the second system bandwidth independently cannot meet the requirement of the terminal, the base station issues an MAC CE to inform the terminal, and the base station allocates PRB to the terminal in the extended bandwidth and the second system bandwidth simultaneously; after the base station allocates the PRBs to the terminal on the extended bandwidth and the second system bandwidth at the same time, the base station may also dynamically notify the terminal that the PRBs are allocated only on the extended bandwidth or the second system bandwidth according to the PRBs that the terminal needs to allocate and the remaining PRBs on the bandwidth. Based on the data transmission, the data transmission can be carried out on the second system bandwidth and the expanded bandwidth for the terminal and the base station which support the non-standard bandwidth; and the terminal which does not support the non-standard bandwidth can communicate and transmit data with the base station in the normal second system bandwidth. Therefore, the base station of the embodiment of the invention can ensure that the terminal supporting the standard bandwidth can normally work without any change, thereby ensuring the compatibility of the system. For a terminal supporting a non-standard bandwidth, more air interface resource blocks of the base station can be used, so that the throughput of data and the frequency spectrum utilization rate can be improved. The operator can make full use of the owned non-standard bandwidth, and the utilization rate of the frequency spectrum resources is improved.
Drawings
Fig. 1 is a flowchart illustrating a scheduling method supporting a non-standard bandwidth according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a base station according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of PRBs in LTE;
FIG. 4 is a diagram illustrating the relationship between the extended bandwidth and the standard bandwidth according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of cross-carrier scheduling according to an embodiment of the present invention;
fig. 6 is a schematic diagram of non-standard bandwidth scheduling according to an embodiment of the present invention.
Detailed Description
So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.
Fig. 1 is a flowchart illustrating a scheduling method supporting a non-standard bandwidth according to an embodiment of the present invention, where the scheduling method supporting a non-standard bandwidth in this example is applied to a base station, and as shown in fig. 1, the scheduling method supporting a non-standard bandwidth includes the following steps:
step 101: configuring a first system bandwidth and a second system bandwidth, and sending the second system bandwidth to a terminal through broadcast information, wherein the first system bandwidth minus the second system bandwidth is an extended bandwidth.
In the embodiment of the present invention, when configuring a first system bandwidth and a second system bandwidth, a location identifier of the extended bandwidth and the second system bandwidth is also configured, where the location identifier represents a preset location relationship between the extended bandwidth and the second system bandwidth.
In this embodiment of the present invention, the issuing the second system bandwidth to the terminal through broadcast information includes:
issuing a downlink second system bandwidth in the MIB;
issuing an uplink second system bandwidth in an SIB 2;
when the SIB2 does not have the uplink second system bandwidth, the downlink second system bandwidth is the same as the uplink second system bandwidth.
Step 102: and when the terminal accesses the cell in the second system bandwidth, receiving indication information which is sent by the terminal and used for indicating whether the terminal supports the nonstandard bandwidth.
In the embodiment of the invention, for a terminal supporting a non-standard bandwidth, a PRB is allocated to the terminal in the extended bandwidth or the second system bandwidth, and when the PRB of the extended bandwidth or the second system bandwidth cannot meet the requirement of the terminal, an MAC CE is issued to the terminal to inform the terminal of allocating the PRB to the terminal in the extended bandwidth and the second system bandwidth simultaneously.
In the embodiment of the invention, when the extended bandwidth or the second system bandwidth is separately scheduled, a PDCCH is issued in a TTI to schedule the resources of the extended bandwidth or the second system bandwidth;
when the extended bandwidth and the second system bandwidth are scheduled simultaneously, two PDCCHs are issued in one TTI to schedule the resources of the extended bandwidth and the second system bandwidth respectively, at the moment, the used DCI format is a DCI format supporting cross-carrier scheduling, namely, a 3-bit CIF identification bit is added in front of the DCI, and the PDCCH for scheduling the extended bandwidth resources and the PDCCH for scheduling the second system bandwidth resources are distinguished through the CFI identification bit.
In the embodiment of the invention, whether the extended bandwidth meets the requirement of the terminal is judged, and when the extended bandwidth meets the requirement, PRB is distributed to the terminal in the extended bandwidth;
when the extended bandwidth does not meet the terminal requirement, judging whether the second system bandwidth meets the terminal requirement, and when the second system bandwidth meets the terminal requirement, allocating PRB to the terminal in the second system bandwidth;
and when the second system bandwidth does not meet the requirement of the terminal, allocating PRB to the terminal at the extended bandwidth and the second system bandwidth simultaneously.
Step 103: and when the terminal is determined to support the non-standard bandwidth according to the indication information, issuing a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth, wherein the cross-carrier scheduling identifier is used for indicating the terminal to schedule on the extended bandwidth and/or the second system bandwidth.
In the embodiment of the invention, for the terminal supporting the non-standard bandwidth, at least the following information is issued in the reconfiguration message: the first system bandwidth, the extended bandwidth, the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal calculates the extended bandwidth and the location thereof.
In the embodiment of the invention, for a terminal supporting a non-standard bandwidth, the extended bandwidth is obtained by calculation according to the second system bandwidth and the first system bandwidth;
issuing in a reconfiguration message at least the following information: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and the location thereof.
In the embodiment of the invention, at least the following information is issued in the broadcast information SIB 2: the first system bandwidth, the extended bandwidth and the second system bandwidth are identified in position, so that the terminal can calculate the extended bandwidth and the position thereof;
and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
In the embodiment of the invention, the extended bandwidth is obtained by calculation according to the second system bandwidth and the first system bandwidth;
at least the following information is issued in the broadcast information SIB 2: expanding the bandwidth, the expanded bandwidth and the position identification of the second system bandwidth so that the terminal obtains the expanded bandwidth and the position of the expanded bandwidth;
and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
In the embodiment of the present invention, when the resources of the extended bandwidth and the second system bandwidth are scheduled simultaneously, according to the utilization rate of the PRB on each system bandwidth and the requirement of the terminal for the PRB, when the PRB of the extended bandwidth or the second system bandwidth is used alone to meet the requirement of the terminal, the MAC CE is issued to the terminal to notify the terminal that the PRB is allocated to the terminal only in the extended bandwidth or the second system bandwidth.
Fig. 2 is a schematic structural diagram of a base station according to an embodiment of the present invention, and as shown in fig. 2, the base station includes:
a configuration unit 21, configured to configure a first system bandwidth and a second system bandwidth, where the first system bandwidth minus the second system bandwidth is an extended bandwidth;
the issuing unit 22 is configured to issue the second system bandwidth to a terminal through broadcast information;
a receiving unit 23, configured to receive, when a terminal accesses a cell in the second system bandwidth, indication information sent by the terminal and used for indicating whether the terminal supports a non-standard bandwidth;
the issuing unit 22 is further configured to issue a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth when it is determined that the terminal supports the non-standard bandwidth according to the indication information, where the cross-carrier scheduling identifier is used to indicate that the terminal schedules on the extended bandwidth and/or the second system bandwidth.
The base station further comprises:
an allocating unit 24, configured to allocate, for a terminal that supports a non-standard bandwidth, a PRB to the terminal in the extended bandwidth or the second system bandwidth, and when the PRB of the extended bandwidth or the second system bandwidth cannot meet the terminal requirement, issue an MAC CE to the terminal to notify the terminal that the PRB is allocated to the terminal in the extended bandwidth and the second system bandwidth at the same time.
The issuing unit is further configured to issue a PDCCH within a TTI to schedule resources of the extended bandwidth or the second system bandwidth when the extended bandwidth or the second system bandwidth is separately scheduled; when the extended bandwidth and the second system bandwidth are scheduled simultaneously, two PDCCHs are issued in one TTI to schedule the resources of the extended bandwidth and the second system bandwidth respectively, at the moment, the used DCI format is a DCI format supporting cross-carrier scheduling, namely, a 3-bit CIF identification bit is added in front of the DCI, and the PDCCH for scheduling the extended bandwidth resources and the PDCCH for scheduling the second system bandwidth resources are distinguished through the CFI identification bit.
The base station further comprises:
and a dynamic allocation unit 25, configured to, when scheduling resources of the extended bandwidth and the second system bandwidth simultaneously, according to the utilization rate of PRBs in each system bandwidth and the requirement of the terminal for PRBs, when the PRBs that use the extended bandwidth or the second system bandwidth alone can meet the requirement of the terminal, issue an MAC CE to the terminal to notify the terminal to allocate PRBs to the terminal only in the extended bandwidth or the second system bandwidth. .
The configuration unit 21 is further configured to, when configuring a first system bandwidth and a second system bandwidth, further configure location identifiers of the extended bandwidth and the second system bandwidth, where the location identifiers represent a preset location relationship between the extended bandwidth and the second system bandwidth.
The issuing unit 22 is further configured to issue a downlink second system bandwidth in the MIB; issuing an uplink second system bandwidth in an SIB 2; when the SIB2 does not have the uplink second system bandwidth, the downlink second system bandwidth is the same as the uplink second system bandwidth.
The issuing unit 22 is further configured to issue, in the reconfiguration message, at least the following information for a terminal supporting a non-standard bandwidth: the first system bandwidth, the extended bandwidth, the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal calculates the extended bandwidth and the location thereof.
The base station further comprises:
a calculating unit 26, configured to calculate, for a terminal that supports a non-standard bandwidth, the extended bandwidth according to the second system bandwidth and the first system bandwidth;
the issuing unit 22 is further configured to issue at least the following information in the reconfiguration message: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and the location thereof.
The issuing unit 22 is further configured to issue at least the following information in the broadcast information SIB 2: the first system bandwidth, the extended bandwidth and the second system bandwidth are identified in position, so that the terminal can calculate the extended bandwidth and the position thereof; and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
A calculating unit 26, configured to calculate the extended bandwidth according to the second system bandwidth and the first system bandwidth;
the issuing unit 22 is further configured to issue at least the following information in the broadcast information SIB 2: expanding the bandwidth, the expanded bandwidth and the position identification of the second system bandwidth so that the terminal obtains the expanded bandwidth and the position of the expanded bandwidth; and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
The base station further comprises:
a first determining unit 27, configured to determine whether the extended bandwidth meets the terminal requirement, and if so, allocate a PRB to the terminal in the extended bandwidth;
a second determining unit 28, configured to determine whether the second system bandwidth meets the terminal requirement when the extended bandwidth does not meet the terminal requirement, and if so, allocate a PRB to the terminal in the second system bandwidth; and when the second system bandwidth does not meet the requirement of the terminal, allocating PRB to the terminal at the extended bandwidth and the second system bandwidth simultaneously.
It should be understood by those skilled in the art that the functions implemented by the units in the base station according to the embodiments of the present invention can be understood by referring to the foregoing description of the scheduling method supporting the non-standard bandwidth.
The following describes the scheduling method supporting the non-standard bandwidth in detail with reference to specific embodiments.
Example one
The embodiment of the invention configures the extended bandwidth through the reconfiguration message.
The LTE standard bandwidth defined in the 3GPP protocol is: six of 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz, the corresponding maximum available resource block numbers are respectively 6, 15, 25, 50, 75 and 100, which can be represented by n6, n15, n25, n50, n75 and n100, wherein the number part represents the maximum available PRB corresponding to the bandwidth. Referring to fig. 3, fig. 3 is a schematic diagram illustrating a PRB structure in LTE, where one PRB is composed of 12 vertical subcarriers and 7 horizontal Orthogonal Frequency Division Multiplexing (OFDM) symbols.
For the case of non-standard bandwidth, n may be used to represent, where x represents the number of PRBs of the non-standard bandwidth. Therefore, the value range is any value except 6, 15, 25, 50, 75 and 100 in the [7,200] interval, namely, the value range can also be expressed as [7,14], [16,24], [26,74], [76,99] and [101,200 ]. When LTE is deployed, one of these standard system bandwidths is typically employed and signals are transmitted within the corresponding bandwidth.
In the embodiment of the present invention, the non-standard bandwidth owned by the operator is referred to as a first system bandwidth, and the standard bandwidth smaller than the first system bandwidth is referred to as a second system bandwidth. When the first system bandwidth and the second system bandwidth are different, the second system bandwidth may be any standard bandwidth smaller than the first system bandwidth. For example, the first system bandwidth is n80, the second system bandwidth may be set to any one of n6, n15, n25, n50 and n75, and the expansion bandwidth may be n74, n65, n55, n30 and n 5. In the embodiment of the present invention, only the largest second system bandwidth smaller than the first system bandwidth is described.
In the base station of the embodiment of the present invention, the first system bandwidth, the second system bandwidth, the extended bandwidth, and the second system bandwidth location identifier need to be configured. The extended bandwidth may be located to the right of the second system bandwidth, as shown in case a in fig. 4; the extended bandwidth may also be to the left of the second system bandwidth, as shown in case B in fig. 4; the extended bandwidth may also be evenly distributed across the second system bandwidth, as shown in case C in fig. 4. The base station determines the relationship between the second system bandwidth and the extended bandwidth by issuing three parameters, namely a first system bandwidth or an extended bandwidth, the second system bandwidth, the extended bandwidth and a second system bandwidth location identifier, wherein the first system bandwidth and the second system bandwidth can be represented by the number of PRBs, and the extended bandwidth and the second system bandwidth location identifier can represent three conditions of the second system bandwidth and the extended bandwidth location by using 2-bit (bit) data.
The base station issues the second system bandwidth in a broadcast manner, the Downlink (DL) second system bandwidth is issued in the MIB, the Uplink (UL) second system bandwidth is issued in the SIB2, and if there is no UL second system bandwidth in the SIB2, the DL second system bandwidth and the UL second system bandwidth are considered to be the same. All terminals receive the broadcast information on the second system bandwidth and initiate access on the second system bandwidth.
And the terminal searches a cell in a second system bandwidth configured by the base station, receives the broadcast information and initiates an access process. The terminal supporting the non-standard bandwidth transmits the capability supporting the non-standard bandwidth to the base station through the UE capability message. For a terminal supporting a non-standard bandwidth, a base station issues in a reconfiguration message: the number of the first system bandwidth resource blocks, the position identification of the second system bandwidth and the extended bandwidth, the indication supporting cross-carrier scheduling and the like. The terminal reconfigures the first system bandwidth and the second system bandwidth received in the message and the position identifier of the extended bandwidth according to the second system bandwidth received in the broadcast information, and can calculate the number and the position of the resource blocks of the extended bandwidth. The terminal determines whether the base station schedules the second system bandwidth, the extended bandwidth or the simultaneous scheduling of two parts of resources according to a Carrier Indicator Field (CIF) in a Downlink Control Information (DCI) format.
When the base station issues the first system bandwidth resource block number in the reconfiguration message, the UE is required to calculate the resource block number of the extended bandwidth. Or, another method may be adopted, the base station calculates the number of the bandwidth expansion resource blocks and then issues the bandwidth expansion resource blocks to the terminal through the reconfiguration message, and at this time, the base station needs to issue parameters such as the bandwidth expansion, the second system bandwidth, the bandwidth expansion position identifier, the cross-carrier scheduling support indication and the like in the reconfiguration message.
Example two
The embodiment of the invention configures the extended bandwidth through the broadcast message.
The first system bandwidth or the extended bandwidth, the extended bandwidth and the second system bandwidth location identification can also be issued in the system broadcast. The base station transmits the broadcast message on the second system bandwidth, the DL second system bandwidth is transmitted in the MIB, the UL second system bandwidth is transmitted in the SIB2, and if the SIB2 has no UL second system bandwidth, the DL second system bandwidth and the UL second system bandwidth are considered to be the same. The number of resource blocks of the first system bandwidth, the second system bandwidth and the extended bandwidth location identifier of the DL and the UL are sent to the terminal in SIB2, and the terminal can calculate the number and location of resource blocks of the extended bandwidth by using the received first system bandwidth, second system bandwidth, extended bandwidth and the second system bandwidth location identifier. The terminal initiates access on a second system bandwidth, the terminal supporting the non-standard bandwidth reports the capability of supporting the non-standard bandwidth in a UE capability report message, the base station issues a cross-carrier scheduling indication in a reconfiguration message according to whether the UE supports the non-standard bandwidth, and the UE judges whether the base station schedules the second system bandwidth, the extended bandwidth or the two parts of resources at the same time according to a CIF in DCI issued by the base station.
When the base station issues the first system bandwidth in the SIB2 message, the terminal needs to calculate the number of resource blocks of the extended bandwidth according to the first system bandwidth and the second system bandwidth. The base station may also calculate the number of resource blocks for the extended bandwidth and broadcast the extended bandwidth, and the second system bandwidth location identification in a SIB2 message.
EXAMPLE III
The embodiment of the invention explains the allocation situation of the resources on the first system bandwidth.
For a terminal which does not support the non-standard bandwidth, the base station directly allocates resource blocks to the terminal in the second system bandwidth, the information of uplink and Downlink scheduling is sent to the terminal through the PDCCH, and the terminal demodulates a Physical Downlink Shared Channel/a Physical uplink Shared Channel (PDSCH/PUSCH, Physical Downlink Shared Channel/Physical uplink Shared Channel) according to DCI issued by the PDCCH, so as to realize data transmission.
In order to improve the utilization rate of resource blocks on the first system bandwidth of the base station without increasing the power consumption of the terminal, for the terminal supporting the non-standard bandwidth, the resource allocation steps are as follows:
the first step is as follows: preferentially judging whether the resources of the extended bandwidth can meet the requirements of the terminal, and setting two threshold parameters of the resource utilization rate for the extended bandwidth in order to measure the use condition of the resources of the extended bandwidth: e _ Threshold1 and E _ Threshold 2. E1(T) represents the actual PRB usage of the extended bandwidth at the current time, and E2(T) represents the PRB usage of the extended bandwidth after estimation for allocation of PRBs to UEs.
If E1(T) < E _ Threshold1 and E2(T) < E _ Threshold2
If the resource utilization rate of the extended bandwidth is not too high, the requirement of the terminal resource can be met, the terminal is allocated with the resource on the extended bandwidth, otherwise, if the resource utilization rate of the extended bandwidth is higher, the terminal is not allocated with the resource on the extended bandwidth, and the process goes to the second step.
The second step is that: in order to balance the second system bandwidth resource usage, two Threshold parameters of resource utilization, N _ Threshold1 and N _ Threshold2, are also set. N1(T) represents the actual PRB utilization of the second system bandwidth at the current time, and N2(T) represents the RRB utilization of the second system bandwidth after the PRBs are allocated to the UE.
If N1(T) < N _ Threshold1 and N2(T) < N _ Threshold2
And if the resource utilization rate of the second system bandwidth is not high enough to meet the requirement of allocating resources for the terminal, allocating resources for the terminal on the second system bandwidth, otherwise, turning to the third step.
The third step: since the resource utilization rates of the extended bandwidth and the second system bandwidth are both high, resource blocks need to be allocated to the terminal on the two bandwidths simultaneously, and in order to enable the terminal to detect the resource allocation on the extended bandwidth and the second system bandwidth simultaneously, the base station needs to issue an MAC CE to notify the terminal to schedule the extended bandwidth and the second system bandwidth simultaneously. The base station uses resources of a second system bandwidth to send two PDCCHs within 1 TTI, one PDCCH is used for allocating the resources of the second system bandwidth, the other PDCCH is used for allocating extended bandwidth resources, and the terminal can blindly detect the two PDCCHs within 1 TTI.
The fourth step: because the terminal blindly detects two PDCCHs at the same time, power consumption of the terminal is increased, and in order to reduce power consumption of the terminal, the base station is required to schedule only resources of the extended bandwidth or the second system bandwidth when the extended bandwidth or the second system bandwidth can meet the requirement of the terminal. In order to measure the resource usage of the terminal in the extended bandwidth and the second system bandwidth, two parameters, E _ UE _ Threshold and N _ UE _ Threshold, are set. N _ UE (t) represents an average of a ratio of total RBs in the second system bandwidth allocated for the UE at the second system bandwidth; e _ UE (t) represents the average of the ratio of total RBs in the extended bandwidth for the RBs allocated for the UE at the extended bandwidth.
If N _ UE (T) < N _ UE _ Threshold or E _ UE (T) < E _ UE _ Threshold
The base station needs to continuously judge the resource use condition on the extended bandwidth, and if the conditions are met:
e1(T) < E _ Threshold1 and E2(T) < E _ Threshold2, the base station issues MAC CE to inform the terminal to schedule it only on the extended bandwidth, and the terminal also demodulates PDSCH/PUSCH only within the extended bandwidth. Otherwise, the base station continues to judge the second system bandwidth resource allocation, if the following conditions are met:
n1(T) < N _ Threshold1 and N2(T) < N _ Threshold2
The base station issues the MAC CE to inform the terminal to schedule the terminal only in the second system bandwidth, and the terminal also demodulates the PDSCH/PUSCH only in the second system bandwidth.
If the above conditions are not met, the base station continues to schedule the terminal within the extended bandwidth and the second system bandwidth.
Example four
The embodiment of the invention explains the scheduling condition of the bandwidth and the extended bandwidth resource of the second system.
When the base station schedules the terminal on the extended bandwidth and the second system bandwidth, two PDCCHs need to be issued for scheduling. The DCI containing a 3-bit CIF supporting cross-carrier scheduling is used at this time.
Referring to fig. 5, fig. 5 is a schematic diagram of cross-carrier scheduling according to an embodiment of the present invention, after receiving a PDCCH scheduled for a resource block of a second system bandwidth, a terminal demodulates downlink data on a PDSCH of the second system bandwidth or transmits uplink data on a PUSCH according to a DCI message. When demodulating PDSCH, the symbol position needs to be determined according to a Control Format Indicator (CFI) of a cell. And if the uplink data transmission is carried out, the terminal analyzes the PDCCH and then sends the uplink data on the corresponding PUSCH resource position.
And after receiving the PDCCH scheduled for the resource block of the extended bandwidth, the terminal demodulates the downlink data on the PDSCH of the extended bandwidth or transmits the uplink data on the PUSCH according to the DCI message. Since the extended bandwidth is not provided with a control channel PDCCH, the symbol position of the PDSCH is not dependent on the CFI configured by the base station, and all symbols are used for transmitting the PDSCH. And if the uplink data transmission is carried out, the terminal analyzes the PDCCH and then sends the uplink data on the corresponding PUSCH resource position.
Referring to fig. 6, fig. 6 is a schematic diagram illustrating a non-standard bandwidth scheduling method according to an embodiment of the present invention, in which when an extended bandwidth and a second system bandwidth resource are used simultaneously, a base station issues two PDCCHs, so that the base station and a terminal need to maintain two Hybrid Automatic Repeat Request (harq) entities at the same time, and for downlink data, the UE needs to feed back 4 pieces of ACK/NACK information at most, and for uplink data, the UE needs to feed back 4 pieces of ACK/NACK at most.
The technical schemes described in the embodiments of the present invention can be combined arbitrarily without conflict.
In the embodiments provided in the present invention, it should be understood that the disclosed method and intelligent device may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
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, that is, 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, all the functional units in the embodiments of the present invention may be integrated into one second processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (21)
1. A scheduling method supporting non-standard bandwidth, applied to a base station, is characterized in that the method comprises:
configuring a first system bandwidth and a second system bandwidth;
the second system bandwidth is sent to a terminal through broadcast information, wherein the first system bandwidth minus the second system bandwidth is an extended bandwidth;
when the terminal accesses the cell in the second system bandwidth, receiving indication information which is sent by the terminal and used for indicating whether the terminal supports the nonstandard bandwidth;
when the terminal is determined to support the non-standard bandwidth according to the indication information, issuing a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth, wherein the cross-carrier scheduling identifier is used for indicating the terminal to schedule on the extended bandwidth and/or the second system bandwidth;
for a terminal supporting a non-standard bandwidth, allocating Physical Resource Blocks (PRBs) to the terminal in the extended bandwidth or the second system bandwidth, and when the PRBs of the extended bandwidth or the second system bandwidth cannot meet the requirements of the terminal, notifying the terminal to allocate PRBs to the terminal in the extended bandwidth and the second system bandwidth at the same time.
2. The scheduling method of claim 1, wherein the notifying the terminal to allocate PRBs to the terminal at the extended bandwidth and the second system bandwidth simultaneously comprises:
and issuing a media access control unit (MAC CE) to the terminal to inform the terminal of allocating PRB to the terminal at the extended bandwidth and the second system bandwidth simultaneously.
3. The scheduling method supporting non-standard bandwidth according to claim 1, wherein the method further comprises:
when the extended bandwidth or the second system bandwidth is separately scheduled, a Physical Downlink Control Channel (PDCCH) is issued in a Transmission Time Interval (TTI) to schedule the resources of the extended bandwidth or the second system bandwidth;
when the extended bandwidth and the second system bandwidth are scheduled simultaneously, two PDCCHs are issued in one TTI to schedule the resources of the extended bandwidth and the second system bandwidth respectively, the format of Downlink Control Information (DCI) in the PDCCHs supports cross-carrier scheduling, and the DCI distinguishes the PDCCH scheduled by the extended bandwidth resources and the PDCCH scheduled by the second system bandwidth resources by increased Carrier Indication Field (CIF) identification bits.
4. The method of claim 3, wherein the method further comprises:
when the extended bandwidth and the second system bandwidth are scheduled simultaneously, according to the PRB utilization rate on each system bandwidth and the demand of the terminal on the PRB, if the PRB of the extended bandwidth or the second system bandwidth is used independently to meet the demand of the terminal, the MAC CE is issued to the terminal to inform the terminal to allocate the PRB to the terminal in the extended bandwidth or the second system bandwidth.
5. The scheduling method supporting non-standard bandwidth according to claim 1, wherein when configuring the first system bandwidth and the second system bandwidth, a location identifier of the extended bandwidth and the second system bandwidth is further configured, wherein the location identifier is used to characterize a preset location relationship between the extended bandwidth and the second system bandwidth.
6. The scheduling method of claim 1, wherein the issuing the second system bandwidth to the terminal through the broadcast information comprises:
issuing a downlink second system bandwidth in a master message block MIB;
issuing an uplink second system bandwidth in a system message block 2SIB 2;
when the SIB2 does not have the uplink second system bandwidth, the downlink second system bandwidth is the same as the uplink second system bandwidth.
7. The method of claim 5, wherein the method further comprises:
for a terminal supporting a non-standard bandwidth, at least the following information is issued in a reconfiguration message: the first system bandwidth, the extended bandwidth, the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal calculates the extended bandwidth and the location thereof.
8. The method of claim 5, wherein the method further comprises:
for a terminal supporting a non-standard bandwidth, calculating the extended bandwidth according to the second system bandwidth and the first system bandwidth;
issuing in a reconfiguration message at least the following information: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and the location thereof.
9. The method of claim 5, wherein the method further comprises:
at least the following information is issued in the broadcast information SIB 2: the first system bandwidth, the extended bandwidth and the second system bandwidth are identified in position, so that the terminal can calculate the extended bandwidth and the position thereof;
and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
10. The method of claim 5, wherein the method further comprises:
calculating to obtain the extended bandwidth according to the second system bandwidth and the first system bandwidth;
at least the following information is issued in the broadcast information SIB 2: and expanding the bandwidth, and identifying the expanded bandwidth and the position of the second system bandwidth so that the terminal determines the expanded bandwidth and the position thereof.
11. The method of claim 2, wherein the method further comprises:
judging whether the extended bandwidth meets the requirement of the terminal, and if so, allocating PRB to the terminal in the extended bandwidth;
when the extended bandwidth does not meet the terminal requirement, judging whether the second system bandwidth meets the terminal requirement, and when the second system bandwidth meets the terminal requirement, allocating PRB to the terminal in the second system bandwidth;
and when the second system bandwidth does not meet the requirement of the terminal, allocating PRB to the terminal at the extended bandwidth and the second system bandwidth simultaneously.
12. A base station, characterized in that the base station comprises:
the device comprises a configuration unit, a first processing unit and a second processing unit, wherein the configuration unit is used for configuring a first system bandwidth and a second system bandwidth, and the first system bandwidth minus the second system bandwidth is an extended bandwidth;
the issuing unit is used for issuing the second system bandwidth to a terminal through broadcast information;
a receiving unit, configured to receive, when a terminal accesses a cell in the second system bandwidth, indication information sent by the terminal and used for indicating whether the terminal supports a non-standard bandwidth;
the issuing unit is further configured to issue a cross-carrier scheduling identifier to the terminal supporting the non-standard bandwidth when it is determined that the terminal supports the non-standard bandwidth according to the indication information, where the cross-carrier scheduling identifier is used to indicate that the terminal schedules on the extended bandwidth and/or the second system bandwidth;
and the allocating unit is used for allocating PRBs to the terminal in the extended bandwidth or the second system bandwidth for the terminal supporting the non-standard bandwidth, and when the PRBs of the extended bandwidth or the second system bandwidth cannot meet the requirement of the terminal, informing the terminal to allocate PRBs to the terminal in the extended bandwidth and the second system bandwidth at the same time.
13. The base station of claim 12, wherein the issuing unit is further configured to issue one PDCCH for scheduling resources of the extended bandwidth or the second system bandwidth within one TTI when the extended bandwidth or the second system bandwidth is separately scheduled; when the extended bandwidth and the second system bandwidth are scheduled simultaneously, two PDCCHs are issued in one TTI to schedule the resources of the extended bandwidth and the second system bandwidth respectively, the DCI format in the PDCCH supports cross-carrier scheduling, and the DCI distinguishes the PDCCH scheduled by the extended bandwidth resources and the PDCCH scheduled by the second system bandwidth resources by the increased CIF identification bit.
14. The base station of claim 13, wherein the base station further comprises:
and the dynamic allocation unit is used for simultaneously scheduling resources of the extended bandwidth and the second system bandwidth, and when the PRB of the extended bandwidth or the second system bandwidth is independently used and can meet the requirement of the terminal on the PRB according to the utilization rate of the PRB on each system bandwidth and the requirement of the terminal on the PRB, sending an MAC CE to the terminal so as to inform the terminal to allocate the PRB to the terminal only in the extended bandwidth or the second system bandwidth.
15. The base station of claim 12, wherein the configuring unit is further configured to, when configuring a first system bandwidth and a second system bandwidth, further configure location identifiers of the extended bandwidth and the second system bandwidth, where the location identifiers represent a preset location relationship between the extended bandwidth and the second system bandwidth.
16. The base station of claim 12, wherein the issuing unit is further configured to issue a downlink second system bandwidth in the MIB; issuing an uplink second system bandwidth in an SIB 2; when the SIB2 does not have the uplink second system bandwidth, the downlink second system bandwidth is the same as the uplink second system bandwidth.
17. The base station of claim 15, wherein the issuing unit is further configured to issue at least the following information in a reconfiguration message for a terminal supporting a non-standard bandwidth: the first system bandwidth, the extended bandwidth, the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal calculates the extended bandwidth and the location thereof.
18. The base station of claim 17, wherein the base station further comprises:
a calculating unit, configured to calculate, for a terminal that supports a non-standard bandwidth, the extended bandwidth according to the second system bandwidth and the first system bandwidth;
the issuing unit is further configured to issue at least the following information in the reconfiguration message: the extended bandwidth, the extended bandwidth and the location identifier of the second system bandwidth, and the cross-carrier scheduling identifier, so that the terminal obtains the extended bandwidth and the location thereof.
19. The base station of claim 15, wherein the issuing unit is further configured to issue at least the following information in a broadcast information SIB 2: the first system bandwidth, the extended bandwidth and the second system bandwidth are identified in position, so that the terminal can calculate the extended bandwidth and the position thereof; and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
20. The base station of claim 15, wherein the base station further comprises:
the calculation unit is used for calculating the extended bandwidth according to the second system bandwidth and the first system bandwidth;
the issuing unit is further configured to issue at least the following information in the broadcast information SIB 2: expanding the bandwidth, the expanded bandwidth and the position identification of the second system bandwidth so that the terminal obtains the expanded bandwidth and the position of the expanded bandwidth; and for the terminal supporting the non-standard bandwidth, issuing the cross-carrier scheduling identifier in a reconfiguration message.
21. The base station of claim 12, wherein the base station further comprises:
a first judging unit, configured to judge whether the extended bandwidth meets the terminal requirement, and if so, allocate a PRB to the terminal in the extended bandwidth;
a second determining unit, configured to determine whether the second system bandwidth meets the terminal requirement when the extended bandwidth does not meet the terminal requirement, and allocate a PRB to the terminal in the second system bandwidth when the second system bandwidth meets the terminal requirement; and when the second system bandwidth does not meet the requirement of the terminal, allocating PRB to the terminal at the extended bandwidth and the second system bandwidth simultaneously.
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| CN109309960B (en) * | 2017-07-28 | 2023-09-08 | 中国移动通信有限公司研究院 | Multi-terminal scheduling method, signaling conflict processing method, base station and terminal |
| WO2019024084A1 (en) * | 2017-08-04 | 2019-02-07 | 北京小米移动软件有限公司 | Data transmission method and device, and computer-readable storage medium |
| CN109451854B (en) * | 2017-08-11 | 2021-02-19 | 北京小米移动软件有限公司 | Cross-carrier scheduling method and device |
| KR20200086293A (en) * | 2017-11-15 | 2020-07-16 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Method for data transmission, terminal device and network device |
| EP3761731A4 (en) * | 2018-04-04 | 2021-03-24 | Huawei Technologies Co., Ltd. | Communication method, communication apparatus, and system |
| CN110958662B (en) * | 2018-09-27 | 2022-11-22 | 维沃移动通信有限公司 | Access control method, terminal and network side device |
| CN117915353A (en) * | 2022-10-09 | 2024-04-19 | 中国电信股份有限公司 | Terminal-specific bandwidth configuration method, system, equipment and medium |
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| CN102045865A (en) * | 2009-10-23 | 2011-05-04 | 华为技术有限公司 | Communication method between base station and user terminal and corresponding devices |
| CN104348600A (en) * | 2013-08-02 | 2015-02-11 | 中国移动通信集团公司 | Indication method, system and device for dynamic idle frequency |
| CN104871581A (en) * | 2012-11-02 | 2015-08-26 | 瑞典爱立信有限公司 | Flexible spectrum support in cellular wireless communications |
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| CN102045865A (en) * | 2009-10-23 | 2011-05-04 | 华为技术有限公司 | Communication method between base station and user terminal and corresponding devices |
| CN104871581A (en) * | 2012-11-02 | 2015-08-26 | 瑞典爱立信有限公司 | Flexible spectrum support in cellular wireless communications |
| CN104348600A (en) * | 2013-08-02 | 2015-02-11 | 中国移动通信集团公司 | Indication method, system and device for dynamic idle frequency |
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