CN108282893B - Transmission method, receiving method, base station and user equipment of common control message - Google Patents
Transmission method, receiving method, base station and user equipment of common control message Download PDFInfo
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- CN108282893B CN108282893B CN201710011840.1A CN201710011840A CN108282893B CN 108282893 B CN108282893 B CN 108282893B CN 201710011840 A CN201710011840 A CN 201710011840A CN 108282893 B CN108282893 B CN 108282893B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
A transmission method, a receiving method, a base station and user equipment of a common control message are provided, wherein the transmission method comprises the following steps: configuring a common control channel, and transmitting scheduling information of the common control message to user equipment on the common control channel; wherein: the common control channel is carried by preset resources; and transmitting the common control message on a physical downlink data channel corresponding to the scheduling information. By adopting the scheme, the transmission of the common control message can be realized.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a transmission method, a reception method, a base station, and a user equipment for a common control message.
Background
In the 5G communication system, signals and channels of a Broadcast type, such as a synchronization signal and a Physical Broadcast Channel (NR-PBCH), etc., are redesigned. However, the redesign of the system also introduces a series of problems.
For example, for a redesigned 5G communication system, how to implement transmission of a common control message becomes an urgent problem to be solved.
Disclosure of Invention
The problem solved by the invention is how to transmit common control messages.
In order to solve the above problem, the present invention provides a method for transmitting a common control message, where the method includes: configuring a common control channel, and transmitting scheduling information of the common control message to user equipment on the common control channel; wherein: the common control channel is carried by preset resources; and transmitting the common control message on a physical downlink data channel corresponding to the scheduling information.
Optionally, the preset resources include: and a downlink control channel.
Optionally, in a time domain, the common control channel is in one or more symbols of the downlink control channel.
Optionally, in the frequency domain, the frequency band occupied by the common control channel is a part of the frequency band occupied by the downlink control channel.
Optionally, the common control channel is in the same transmission bandwidth as the synchronization signal block.
Optionally, the frequency band occupied by the common control channel is indicated by system information carried by a physical broadcast channel or a broadcast message carried by another physical channel.
Optionally, the common control channel corresponds to the emitted scanning beam one to one.
Optionally, the common control channel is transmitted in a beam containing a synchronization signal block.
Optionally, the preset resource is a common control block.
Optionally, the common control block is time division multiplexed or frequency division multiplexed with the synchronization signal block.
Optionally, the common control block is in the same transmission bandwidth as the synchronization signal block.
Optionally, the common control block and the synchronization signal block use the same parameter set.
Optionally, the time-frequency position of the common control block is indicated by system information carried by a physical broadcast channel or a broadcast message carried by another physical channel.
Optionally, the system information carried by the physical broadcast channel or the broadcast message carried by another physical channel indicates the number of physical resource blocks and the number of occupied symbols of the common control block.
Optionally, the sent common control sequence containing a plurality of the common control blocks corresponds to the sent scanning beams one by one.
Optionally, the common control block is transmitted in a beam containing a synchronization signal block.
Optionally, the common control message comprises at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
The embodiment of the invention provides a method for receiving a public control message, which comprises the following steps: receiving scheduling information of the common control message through a common control channel; wherein: the common control channel is carried by preset resources; and receiving the common control message on a physical downlink data channel corresponding to the scheduling information according to the scheduling information.
Optionally, the preset resources include: and a downlink control channel.
Optionally, the preset resource is a common control block.
Optionally, the common control message comprises at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
An embodiment of the present invention provides a base station, where the base station includes: a configuration unit adapted to configure a common control channel; wherein: the common control channel is carried by preset resources; a first transmission unit, adapted to transmit scheduling information of the common control message to a user equipment on the common control channel; and a second transmission unit, adapted to transmit the common control message on a physical downlink data channel corresponding to the scheduling information.
Optionally, the preset resources include: and a downlink control channel.
Optionally, in a time domain, the common control channel is in one or more symbols of the downlink control channel.
Optionally, in the frequency domain, the frequency band occupied by the common control channel is a part of the frequency band occupied by the downlink control channel.
Optionally, the common control channel is in the same transmission bandwidth as the synchronization signal block.
Optionally, the frequency band occupied by the common control channel is indicated by system information carried by a physical broadcast channel or a broadcast message carried by another physical channel.
Optionally, the common control channel corresponds to the emitted scanning beam one to one.
Optionally, the common control channel is transmitted in a beam containing a synchronization signal block.
Optionally, the preset resource is a common control block.
Optionally, the common control block is time division multiplexed or frequency division multiplexed with the synchronization signal block.
Optionally, the common control block is in the same transmission bandwidth as the synchronization signal block.
Optionally, the common control block and the synchronization signal block use the same parameter set.
Optionally, the time-frequency position of the common control block is indicated by system information carried by a physical broadcast channel or a broadcast message carried by another physical channel.
Optionally, the system information carried by the physical broadcast channel or the broadcast message carried by another physical channel indicates the number of physical resource blocks and the number of occupied symbols of the common control block.
Optionally, the sent common control sequence containing a plurality of the common control blocks corresponds to the sent scanning beams one by one.
Optionally, the common control block is transmitted in a beam containing a synchronization signal block.
Optionally, the common control message comprises at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
An embodiment of the present invention provides a user equipment, where the user equipment includes: a first receiving unit adapted to receive scheduling information of the common control message through a common control channel; wherein: the common control channel is carried by preset resources; and a second receiving unit, adapted to receive the common control message on a physical downlink data channel corresponding to the scheduling information according to the scheduling information.
Optionally, the preset resources include: and a downlink control channel.
Optionally, the preset resource is a common control block.
Optionally, the common control message comprises at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
Compared with the prior art, the technical scheme of the invention has the following advantages:
in the above-mentioned scheme, the base station configures the common control channel, and transmits the scheduling information of the common control message on the common control channel, so that the user equipment receives the common control message on the physical downlink data channel corresponding to the scheduling information after receiving the scheduling information, thereby realizing transmission of the common control message.
Further, the downlink control channel is preset as a resource carrying the common control channel, so that the resource of the common control channel can be used by the downlink control channel, and when no common control message needs to be transmitted, the downlink control channel can use the idle resource to transmit other control information, thereby improving the flexible reusability of the resource.
Further, since the common control channel and the synchronization signal block are in the same transmission bandwidth, the ue may receive the common control channel by turning on the narrowband receiver that receives the frequency band occupied by the synchronization signal block when in an idle state, thereby reducing the consumption of communication resources.
Further, since the frequency band occupied by the common control channel can be indicated by system information carried by a physical broadcast channel or broadcast messages carried by other physical channels, the flexibility of the common control channel can be improved.
Furthermore, the common control channels are in one-to-one correspondence with the sent scanning beams, one time slot is a time unit of one beam, the base station transmits one beam in one time slot, and the beam carries the common control channel and the corresponding downlink shared channel, so that the transmission of the common control channel in a high frequency band larger than 6GHz can be supported.
Furthermore, the resource carrying the common control channel is preset as a common control block, and the resource carrying the common control channel is prevented from being overlapped with the resources of other control channels, so that the forward compatibility can be improved, the independent protocol upgrade of the downlink control channel and the common control channel can be realized, and the standardized complexity and the product realization complexity can be further simplified.
Drawings
Fig. 1 is a flowchart illustrating a transmission method of a common control message according to an embodiment of the present invention;
FIG. 2 is a timing diagram illustrating the transmission of a common control message according to an embodiment of the present invention;
FIG. 3 is a timing diagram illustrating another common control message transmission according to an embodiment of the present invention;
FIG. 4 is a timing diagram illustrating another common control message transmission according to an embodiment of the present invention;
FIG. 5 is a timing diagram illustrating another common control message transmission according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a method for receiving a common control message according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a base station in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a user equipment in an embodiment of the present invention.
Detailed Description
In 5G systems, Broadcast type signals and channels, such as the synchronization signal and the Physical Broadcast Channel (NR-PBCH), are redesigned. However, the redesign of the system also introduces a series of problems.
For example, in the LTE System, System Information, which mainly includes a Master Information Block (MIB) and a System Information Block (SIB), is transmitted to a User Equipment (UE) in a broadcast manner. Due to frequent transmission of system information, large inter-cell interference may be caused, especially in Ultra Dense Networks (UDNs). Therefore, in the 5G System, the System Information is divided into two types, one is Minimum System Information (MSI) and the Other is Other System Information (OSI). The minimum system information is still sent to the user equipment in a broadcast manner, and other system information is sent to the user equipment in an on-demand (on-demand) manner, that is, the user sends a request according to the requirement, and then the network side sends the request to the user equipment in a unicast manner. Therefore, only the minimum system information is transmitted to all the user equipments in the cell by broadcasting.
Also, in the 5G system, a synchronization signal block (SS-block) is defined, as well as a corresponding synchronization signal burst (SS-burst) and a set of synchronization signal bursts (SS-burst-set). One synchronization signal block may contain a synchronization signal and an NR-PBCH as data on one beam (beam). The synchronization signal burst may contain a plurality of synchronization signal blocks, i.e. a plurality of beams. The set of synchronization signal bursts may contain multiple synchronization signal bursts as a complete synchronization signal and NR-PBCH over a period of time (e.g., 40 milliseconds). The synchronization signal block is sent periodically and is fixed to be transmitted within a certain bandwidth so that the user equipment is synchronized to the carrier. The synchronization signal block is transmitted in a broadcast manner, that is, the user equipment in the cell can receive the data transmitted in the synchronization signal block in an idle state or a connected state. Since the sync signal block is broadcast, the data contained in the sync signal block is very limited, otherwise the occupied resource overhead is too large. This also results in a very limited number of information bits that can be carried by the NR-PBCH, possibly as many as the number of information bits carried by the PBCH in LTE, which is roughly of the order of 20 bits. In 3GPP resolution, the NR-PBCH may not carry all the minimum system information, but only part of the minimum system information. This presents a problem with the channels and resources carrying the minimum system information remaining.
On the other hand, generally, the paging message (paging) needs to be sent by broadcasting, because in the idle state, the network side still needs to send the paging message to the ue, and at this time, the message cannot be sent to the ue by unicast on the dedicated channel. The paging message is not contained in the current synchronization signal block, and unlike the synchronization signal and the NR-PBCH in the synchronization signal block, the amount of loading of the paging message is dynamic, and thus it may be less suitable to place the paging message in the synchronization signal block. The channel and resources carrying the paging message are also a problem to be solved.
There is also a problem that the NR system supports a flexible slot structure such as a basic slot (slot) or a minimum slot (mini-slot), so that the configuration of the slot may be dynamic and needs to be transmitted to the user equipment in a broadcast manner. The timeslot configuration may be a configuration of a group of timeslots within a period of time, and the configuration content includes reserved resources, duration of the timeslot (i.e. number of symbols), timeslot type (downlink, uplink and hybrid), duration of intra-timeslot control, duration of intra-timeslot protection (downlink-to-uplink switching), and configuration of aperiodic reference signals, etc. The amount of loading of the slot configuration information is also dynamic, and therefore the slot configuration information may not fit well within the sync signal block. The channel and resource carrying the timeslot configuration information is also a problem to be solved.
Therefore, how to transmit common control messages such as the remaining minimum system information, paging messages, and timeslot configuration information in the redesigned 5G communication system becomes an urgent problem to be solved.
In order to solve the above problem, in the embodiments of the present invention, a base station configures a common control channel, and transmits scheduling information of the common control message on the common control channel, so that a user equipment receives the common control message on a physical downlink data channel corresponding to the scheduling information after receiving the scheduling information, thereby implementing transmission of the common control message.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 shows a flow diagram of a transmission method of a common control message in an embodiment of the present invention, and the method is described in detail in steps with reference to fig. 1, where the method may include the following steps:
step S11: a common control channel is configured.
In particular implementations, the base station may configure a common control channel for transmitting scheduling information for the common control message.
In a specific implementation, the common control channel may be carried by a preset resource. The preset resource may be various.
In an embodiment of the present invention, the preset resource may be a downlink control channel (NR-PDCCH), that is, a common control channel uses a part of resources of the downlink control channel. In time domain, the common control channel and one or more symbols of the downlink control channel.
In a specific implementation, in the frequency domain, the frequency band or sub-band occupied by the common control channel may be a part of the frequency band occupied by the downlink control channel, and thus the common control channel is a narrowband transmission. And the resources of the common control channel can be used by the downlink control channel, and when no common control message needs to be transmitted, the downlink control channel can use the idle resources to transmit other control information except the common control message, which brings the advantage of flexible multiplexing of communication resources. Also, in this case, the Common control channel can be regarded as one Common Search Space (CSS) of the downlink control channel.
In specific implementation, the preset resource may be a Common Control Block, that is, a resource unit may be defined as a Common Control Block (CC-Block) to carry a Common Control channel, and overlapping of the resource carrying the Common Control channel and resources of other Control channels may be avoided, so that forward compatibility may be improved, that is, independent protocol upgrade of a downlink Control channel and the Common Control channel may be achieved, and further, standardized complexity and product implementation complexity may be simplified.
In a specific implementation, the common control block and the synchronization signal block may be time division multiplexed. For example, the common control block may occupy only one symbol.
In a specific implementation, the common control block and the synchronization signal block may be in the same transmission bandwidth.
In a specific implementation, the common control block is frequency division multiplexed with the synchronization signal block within one time slot.
In a specific implementation, the common control block and the synchronization signal block may use the same parameter set.
In order to improve the flexibility of communication, in a specific implementation, the time-frequency position of the common control block may be indicated by system information carried by a physical broadcast channel or a broadcast message carried by another physical channel.
In a specific implementation, the system information carried by the physical broadcast channel or the broadcast message carried by another physical channel may indicate a time-frequency size of the common control block, and the time-frequency size of the common control block may specifically include the number of physical resource blocks and the number of occupied symbols of the common control block.
In a specific implementation, a common control sequence sent by the base station and including a plurality of the common control blocks may correspond to the sent scanning beams one to one. In detail, the base station may transmit one beam within one common control block. There are multiple common control blocks in a common control block burst so that the base station can transmit multiple beams.
In particular implementations, the common control message may include at least one of: the remaining minimum system messages, paging messages, and slot configuration information. The timeslot configuration information is a configuration of a group of timeslots within a period of time, and the configuration content includes reserved resources, duration of the timeslot (i.e. number of symbols), timeslot type (downlink, uplink, and hybrid), duration of intra-timeslot control, duration of intra-timeslot protection (downlink to uplink switching), and configuration of aperiodic reference signals. It should be noted that, according to actual needs, those skilled in the art may also set the common control message to include other contents, for example, the common control message may also be set to include scheduling indication information, and the information is used for the base station to wake up the user equipment in the sleep state to receive the scheduling information.
Step S12: and transmitting the scheduling information of the common control message to user equipment on the common control channel.
In a specific implementation, after completing the configuration of the common control channel, the base station may transmit the scheduling information of the common control message to the user equipment on the common control channel.
Step S13: and transmitting the common control message on a physical downlink data channel corresponding to the scheduling information.
It should be noted that in LTE, the physical downlink data channel may also be referred to as a physical downlink shared channel, and is used for sending data to the user equipment. Here, the physical downlink data channel means at least one of: a physical downlink shared channel (NR-PDSCH) or a physical downlink data channel in the NR.
In a specific implementation, the common control message may be carried or transmitted by a downlink shared (data) channel, i.e. the common control message occupies a part of the physical resource blocks of the NR-PDSCH. This is a scheduling structure, and for the user equipment, when the scheduling information on the common control channel is detected, the common control message can be received on the physical resource block of the corresponding NR-PDSCH according to the scheduling information. Therefore, the base station can dynamically adjust the physical resource blocks of the NR-PDSCH according to the size of the common control message, and the waste or consumption of communication resources can be reduced.
In a specific implementation, the common control channel and the synchronization signal block may be in the same transmission bandwidth, in other words, the frequency band occupied by the common control channel may be the frequency band occupied by the synchronization signal block. Therefore, when the user equipment is in an idle state, the user equipment can receive the common control channel only by opening the narrow-band receiver of the frequency band occupied by the received synchronous signal block, and therefore the consumption of communication resources and the power consumption of the user equipment can be reduced.
To make those skilled in the art better understand and implement the present invention, fig. 2 shows a timing diagram of a common control message transmission according to an embodiment of the present invention, in fig. 2, one timeslot is 7 symbols in length, a synchronization signal block is time division multiplexed with a common control channel, a synchronization signal burst (SS-burst) includes a plurality of synchronization signal blocks, timeslot 1 corresponds to 7 symbols, a subcarrier interval is 15kHz, a transmission bandwidth is characterized between two dotted lines, the transmission bandwidth is 5MHz, and an idle state or an inactive state UE can reside in the transmission bandwidth. The space between the two solid lines represents a sub-band, and the bandwidth of the sub-band is 20 MHz. As shown in fig. 2, the common control channel occupies a part of the frequency band of the downlink control channel, the base station transmits scheduling information on the common control channel, and the user equipment can receive a resource block specifically included in the common control message at a position indicated by the scheduling information after receiving the scheduling information.
In a specific implementation, the frequency band occupied by the common control channel may be indicated by system information carried by a physical broadcast channel or broadcast messages carried by other physical channels, so that flexibility of communication resource configuration may be improved.
In order to make the common control channel support beam sweeping (beam sweeping) to be compatible with the communication system, in a specific implementation, the common control channel may correspond to the emitted scanning beams one to one, that is, the common control channel supports the beam sweeping function. Specifically, one slot is a time unit of one beam in which the base station can transmit one beam carrying information of the common control channel and the corresponding NR-PDSCH, and thus can support broadcasting of the common control channel in a high frequency band greater than, for example, 6 GHz.
In a specific implementation, the common control channel is transmitted in a beam that contains the synchronization signal block.
In a particular implementation, the common control block may be transmitted in a beam containing the synchronization signal block.
For those skilled in the art to better understand and implement the present invention, fig. 3 shows a timing diagram of another common control message transmission in the embodiment of the present invention, in fig. 3, a timeslot 2 is 14 symbols in length, a common control channel supports a scanning beam, a synchronization signal block is time-division multiplexed with the common control channel, a synchronization signal burst includes a plurality of synchronization signal blocks, a subcarrier interval is 60kHz, a transmission bandwidth is characterized between two dotted lines, the transmission bandwidth is 20MHz, and an idle state or an inactive state UE may reside in the transmission bandwidth. The space between the two solid lines represents a sub-band, and the bandwidth of the sub-band is 160 MHz. As shown in fig. 3, a common control channel 1 occupies a part of a frequency band of a downlink control channel, the common control channel 1 corresponds to a beam1, at time t1, a base station transmits scheduling information on the common control channel, and after receiving the scheduling information, a user equipment may receive a resource block 1 specifically included in a common control message at a position indicated by the scheduling information, where the resource block 1 corresponds to the beam 1. The common control channel 2 occupies a part of the frequency band of the downlink control channel, the common control channel 2 corresponds to the beam2, at the time t2, the base station transmits scheduling information on the common control channel, and after receiving the scheduling information, the user equipment can receive the resource block 2 specifically included in the common control message at the position indicated by the scheduling information, where the resource block 2 corresponds to the beam 2.
For the case where the common control channel is carried by a common control block, in a particular implementation, the common control block and the synchronization signal block may be frequency division multiplexed within one slot.
For those skilled in the art to better understand and implement the present invention, reference may be made to fig. 4, where fig. 4 shows a timing diagram of another common control message transmission in an embodiment of the present invention, in fig. 4, a timeslot 3 is 7 symbols in length, a synchronization signal block is frequency division multiplexed with a common control channel, a synchronization signal burst includes a plurality of synchronization signal blocks, a subcarrier interval is 15kHz, a transmission bandwidth is characterized between two dotted lines, the transmission bandwidth is 5MHz, and an idle or inactive UE may reside in the transmission bandwidth. The space between the two solid lines represents a sub-band, and the bandwidth of the sub-band is 20 MHz. As shown in fig. 4, a common control burst containing a plurality of common control blocks is independent from a downlink control channel, the base station transmits scheduling information on the common control channel, the common control channel is carried by the common control burst containing the plurality of common control blocks, and after receiving the scheduling information, the user equipment may receive a resource block specifically included in the common control message at a position indicated by the scheduling information.
In a specific implementation, a common control sequence sent by the base station and including a plurality of the common control blocks may correspond to the sent scanning beams one to one. In detail, the base station may transmit one beam within one common control block. There are multiple common control blocks in a common control block burst so that the base station can transmit multiple beams.
To make those skilled in the art better understand and implement the present invention, referring to fig. 5, fig. 5 shows a timing diagram of another common control message transmission in an embodiment of the present invention, in fig. 5, a timeslot 4 is 14 symbols in length, a common control channel supports a scanning beam, a synchronization signal block is frequency division multiplexed with the common control channel, a synchronization signal burst includes a plurality of synchronization signal blocks, a subcarrier interval is 60kHz, a transmission bandwidth is characterized between two dotted lines, the transmission bandwidth is 20MHz, and a UE in an idle state or an inactive state can reside in the transmission bandwidth. The space between the two solid lines represents a sub-band, and the bandwidth of the sub-band is 160 MHz. As shown in fig. 5, the common control burst 1 corresponds to the beam1, at time t3, the base station transmits scheduling information on a common control channel, the common control channel is carried by the common control burst 1, and after receiving the scheduling information, the user equipment may receive a resource block 3 specifically included in the common control message at a position indicated by the scheduling information, where the resource block 3 corresponds to the beam 1. The common control burst 2 corresponds to the beam2, at the time t4, the base station transmits scheduling information on a common control channel, the common control channel is carried by the common control burst 2, and after receiving the scheduling information, the user equipment can receive a resource block 4 specifically included in the common control message at a position indicated by the scheduling information, where the resource block 4 corresponds to the beam 2.
In order to make those skilled in the art better understand and implement the present invention, fig. 6 shows a schematic flow chart of a receiving method of a common control message in the embodiment of the present invention, and the receiving method is described in detail in steps with reference to fig. 6, and the receiving method can be implemented according to the following steps:
step S61: and receiving the scheduling information of the common control message through a common control channel.
In a specific implementation, the common control channel may be carried by a preset resource.
In an embodiment of the present invention, the preset resource may be a downlink control channel, and the resource of the common control channel may be used by the downlink control channel, and when there is no common control message to be transmitted, the downlink control channel may use an idle resource to transmit other control information, so that flexible reusability of the resource may be improved.
In another embodiment of the present invention, the preset resource may be a common control block, which may avoid overlapping of a resource carrying a common control channel with a resource of another control channel, so that forward compatibility may be improved, that is, independent protocol upgrade of a downlink control channel and a common control channel may be implemented, thereby simplifying a standardized complexity and a product implementation complexity.
In particular implementations, the common control message may include at least one of: the remaining minimum system messages and paging messages. The timeslot configuration information is a configuration of a group of timeslots within a period of time, and the configuration content includes reserved resources, duration of the timeslot (i.e. number of symbols), timeslot type (downlink, uplink, and hybrid), duration of intra-timeslot control, duration of intra-timeslot protection (downlink-to-uplink switching), and configuration of aperiodic reference signals, etc. It should be noted that, according to actual needs, those skilled in the art may also set the common control message to include other contents, for example, the common control message may also be set to include scheduling indication information, and the information is used for the base station to wake up the user equipment in the sleep state to receive the scheduling information.
Step S62: and receiving the common control message on a physical downlink data channel corresponding to the scheduling information according to the scheduling information.
In a specific implementation, the ue may receive the common control message on a physical downlink data channel corresponding to the scheduling information according to the scheduling information, so as to implement transmission of the common message.
At present, the implementation of transmission of messages such as the remaining minimum system information, paging messages, and timeslot configuration information becomes an urgent problem to be solved.
In the embodiment of the invention, the base station configures the common control channel, and the scheduling information of the common control message is transmitted on the common control channel, so that the user equipment receives the common control message on the physical downlink data channel corresponding to the scheduling information after receiving the scheduling information, thereby realizing the transmission of the common control message.
In order to make those skilled in the art better understand and implement the present invention, fig. 7 shows a base station in the embodiment of the present invention, and as shown in fig. 7, the base station may include: a configuration unit 71, a first transmission unit 72 and a second transmission unit 73, wherein:
a configuration unit 71 adapted to configure a common control channel; wherein: the common control channel is carried by preset resources;
a first transmitting unit 72 adapted to transmit scheduling information of the common control message to a user equipment on the common control channel;
a second transmission unit 73, adapted to transmit the common control message on a physical downlink data channel corresponding to the scheduling information.
In a specific implementation, the preset resources include: the downlink control channel, the resources of the common control channel can be used by the downlink control channel, and when no common control message needs to be transmitted, the downlink control channel can use the idle resources to transmit other control information, so that the flexible reusability of the resources can be improved.
In a specific implementation, in a time domain, the common control channel is within one or more symbols of the downlink control channel.
In a specific implementation, in a frequency domain, the frequency band occupied by the common control channel is a part of the frequency band occupied by the downlink control channel.
In a specific implementation, the common control channel and the synchronization signal block are in the same transmission bandwidth, and the ue may receive the common control channel by turning on a narrowband receiver that receives a frequency band occupied by the synchronization signal block when the ue is in an idle state, so that consumption of communication resources may be reduced.
In a specific implementation, the frequency band occupied by the common control channel is indicated by system information carried by a physical broadcast channel or a broadcast message carried by another physical channel.
In a specific implementation, the common control channels correspond to the emitted scanning beams one to one.
In a specific implementation, the common control channel is transmitted in a beam containing the synchronization signal block, and one time slot is a time unit of one beam, and the base station transmits one beam in one time slot, and the beam carries the common control channel and the corresponding downlink shared channel, so that the common control channel can be supported to be transmitted in a high frequency band greater than, for example, 6 GHz.
In specific implementation, the preset resource is a common control block, which can avoid overlapping of the resource carrying the common control channel and the resources of other control channels, so that the forward compatibility can be improved, that is, the independent protocol upgrade of the downlink control channel and the common control channel can be realized, and further, the standardized complexity and the product implementation complexity can be simplified.
In a specific implementation, the common control block and the synchronization signal block may be time division multiplexed.
In a specific implementation, the common control block and the synchronization signal block may be in the same transmission bandwidth.
In a specific implementation, the common control block and the synchronization signal block may be frequency division multiplexed.
In a specific implementation, the common control block and the synchronization signal block may use the same parameter set.
In a specific implementation, the time-frequency position of the common control block is indicated by system information carried by a physical broadcast channel or broadcast messages carried by other physical channels, so that the flexibility of the common control channel can be improved.
In a specific implementation, the system information carried by the physical broadcast channel or the broadcast message carried by the other physical channel indicates the number of physical resource blocks and the number of occupied symbols of the common control block.
In a specific implementation, the sent out common control sequence containing a plurality of the common control blocks corresponds to the sent out scanning beams in a one-to-one mode.
In a specific implementation, the common control block is transmitted in a beam containing the synchronization signal block.
In a specific implementation, the common control message includes at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
In order to enable those skilled in the art to better understand and implement the present invention, fig. 8 illustrates a user equipment in an embodiment of the present invention, and as shown in fig. 8, the user equipment may include: a first receiving unit 81 and a second receiving unit 82, wherein:
a first receiving unit 81 adapted to receive scheduling information of the common control message through a common control channel; wherein: the common control channel is carried by preset resources;
a second receiving unit 82, adapted to receive the common control message on a physical downlink data channel corresponding to the scheduling information according to the scheduling information.
In a specific implementation, the preset resources include: and a downlink control channel.
In a specific implementation, the preset resource is a common control block.
In a specific implementation, the common control message includes at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
In summary, the configuration unit 71 of the base station configures a common control channel, and the first transmission unit 72 transmits the scheduling information of the common control message on the common control channel, so that the first receiving unit 81 of the user equipment receives the common control message on the physical downlink data channel corresponding to the scheduling information after receiving the scheduling information, and thus, the transmission of the common control message can be achieved.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (40)
1. A method for transmitting a common control message, comprising:
configuring a common control channel, and transmitting scheduling information of the common control message to user equipment on the common control channel; wherein: the common control channel is carried by preset resources;
transmitting the common control message on a physical downlink data channel corresponding to the scheduling information;
the frequency band occupied by the common control channel is indicated by a master information block, MIB, carried by a physical broadcast channel.
2. The method for transmitting the common control message according to claim 1, wherein the preset resource comprises: and a downlink control channel.
3. The method for transmitting the common control message according to claim 2, wherein the common control channel is within one or more symbols of the downlink control channel in a time domain.
4. The method for transmitting the common control message according to claim 2, wherein the frequency band occupied by the common control channel is a part of the frequency band occupied by the downlink control channel in a frequency domain.
5. The method of claim 4, wherein the common control channel is in a same transmission bandwidth as the synchronization signal block.
6. The method of transmitting a common control message according to claim 2, wherein the common control channel has a one-to-one correspondence with the emitted scanning beams.
7. The method of transmitting a common control message according to claim 6, wherein the common control channel is transmitted in a beam including a synchronization signal block.
8. The method for transmitting the common control message according to claim 1, wherein the predetermined resource is a common control block, and the common control block is a resource unit carrying common control information.
9. The transmission method of a common control message according to claim 8, wherein the common control block is time division multiplexed or frequency division multiplexed with a synchronization signal block.
10. The transmission method of a common control message according to claim 8, wherein the common control block is in the same transmission bandwidth as the synchronization signal block.
11. The transmission method of a common control message according to claim 8, wherein the common control block employs the same parameter set as a synchronization signal block.
12. The method of transmitting a common control message according to claim 8, wherein a time-frequency location of the common control block is indicated by MIB carried by a physical broadcast channel.
13. The transmission method of a common control message according to claim 8, wherein the MIB carried by a physical broadcast channel indicates the number of physical resource blocks and the number of occupied symbols of the common control block.
14. The method for transmitting a common control message according to claim 8, wherein the transmitted common control sequence including a plurality of the common control blocks has a one-to-one correspondence with the transmitted scanning beams.
15. The method of transmitting a common control message according to claim 8, wherein the common control block is transmitted in a beam including a synchronization signal block.
16. The method for transmitting the common control message according to any one of claims 1 to 15, wherein the common control message comprises at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
17. A method for receiving a common control message, comprising:
receiving scheduling information of the common control message through a common control channel; wherein: the common control channel is carried by preset resources;
receiving the common control message on a physical downlink data channel corresponding to the scheduling information according to the scheduling information;
the frequency band occupied by the common control channel is indicated by the MIB carried by the physical broadcast channel.
18. The method of receiving a common control message according to claim 17, wherein the preset resources comprise: and a downlink control channel.
19. The method for receiving a common control message according to claim 17, wherein the preset resource is a common control block, and the common control block is a resource unit carrying common control information.
20. The method of receiving a common control message according to any of claims 17 to 19, wherein the common control message comprises at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
21. A base station, comprising:
a configuration unit adapted to configure a common control channel; wherein: the common control channel is carried by preset resources;
a first transmission unit, adapted to transmit scheduling information of the common control message to a user equipment on the common control channel;
a second transmission unit, adapted to transmit the common control message on a physical downlink data channel corresponding to the scheduling information;
the frequency band occupied by the common control channel is indicated by the MIB carried by the physical broadcast channel.
22. The base station of claim 21, wherein the preset resources comprise: and a downlink control channel.
23. The base station of claim 22, wherein the common control channel is within one or more symbols of the downlink control channel in a time domain.
24. The base station of claim 22, wherein the frequency band occupied by the common control channel is a portion of the frequency band occupied by the downlink control channel in a frequency domain.
25. The base station of claim 24, wherein the common control channel is in a same transmission bandwidth as a synchronization signal block.
26. The base station of claim 22, wherein the common control channels have a one-to-one correspondence with the emitted scanning beams.
27. The base station of claim 26 wherein said common control channel is transmitted in a beam containing a synchronization signal block.
28. The base station of claim 21, wherein the predetermined resource is a common control block, and the common control block is a resource unit carrying common control information.
29. The base station of claim 28, wherein the common control block is time division multiplexed or frequency division multiplexed with a synchronization signal block.
30. The base station of claim 28, wherein the common control block is in a same transmission bandwidth as a synchronization signal block.
31. The base station of claim 28, wherein the common control block employs the same set of parameters as a synchronization signal block.
32. The base station of claim 28, wherein a time-frequency location of the common control block is indicated by a MIB carried by a physical broadcast channel.
33. The base station of claim 28, wherein the MIB carried by a physical broadcast channel indicates a number of physical resource blocks and a number of occupied symbols of the common control block.
34. The base station of claim 28, wherein the common control sequence comprising the plurality of common control blocks is transmitted in a one-to-one correspondence with the transmitted scanning beams.
35. The base station of claim 28 wherein the common control block is transmitted in a beam containing a synchronization signal block.
36. The base station of any of claims 21 to 35, wherein the common control message comprises at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
37. A user device, comprising:
a first receiving unit adapted to receive scheduling information of the common control message through a common control channel;
wherein: the common control channel is carried by preset resources;
a second receiving unit, adapted to receive the common control message on a physical downlink data channel corresponding to the scheduling information according to the scheduling information;
the frequency band occupied by the common control channel is indicated by the MIB carried by the physical broadcast channel.
38. The user equipment of claim 37, wherein the preset resources comprise: and a downlink control channel.
39. The UE of claim 37, wherein the predetermined resource is a common control block, and the common control block is a resource unit carrying common control information.
40. The user equipment according to any of claims 37 to 39, wherein the common control message comprises at least one of: the remaining minimum system messages, paging messages, and slot configuration information.
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| CN104519577B (en) * | 2013-09-27 | 2019-08-30 | 中兴通讯股份有限公司 | Communication resource management method, equipment and system |
| CN104518843B (en) * | 2013-09-27 | 2019-04-05 | 中兴通讯股份有限公司 | Publicly-owned message sending, receiving method, apparatus and system |
| US10015715B2 (en) * | 2013-10-31 | 2018-07-03 | Lg Electronics Inc. | Method of receiving MBMS service in wireless communication system and apparatus thereof |
| WO2015068983A1 (en) * | 2013-11-05 | 2015-05-14 | Lg Electronics Inc. | Method for determining priorities of services and wireless equipment thereof |
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| CN105337712B (en) * | 2014-07-30 | 2022-04-29 | 夏普株式会社 | Method for configuring physical channel start symbol, base station and user equipment |
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| CN105610556B (en) * | 2014-11-07 | 2019-12-31 | 中兴通讯股份有限公司 | Downlink information sending method, downlink information receiving method and device |
| US10652768B2 (en) * | 2015-04-20 | 2020-05-12 | Qualcomm Incorporated | Control channel based broadcast messaging |
| CN106301671B (en) * | 2015-05-15 | 2021-01-22 | 中兴通讯股份有限公司 | Transmission method and configuration method of downlink control channel, terminal and base station |
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