WO2013177964A1

WO2013177964A1 - Communication method, base station, and user equipment

Info

Publication number: WO2013177964A1
Application number: PCT/CN2013/072108
Authority: WO
Inventors: 夏金环
Original assignee: 华为技术有限公司
Priority date: 2012-05-28
Filing date: 2013-03-04
Publication date: 2013-12-05
Also published as: CN103458509A; CN103458509B

Abstract

A communication method, base station, and user equipment (UE). The communication method comprises: determining on a physical downlink shared channel (PDSCH) a common message sub-band and a data sub-band; transmitting a common message on the common message sub-band to the UE; and, transmitting downlink data on the data sub-band to the UE. With the division into the common message sub-band and the data sub-band, embodiments of the present invention allow the common message and the data message to be transmitted respectively on the different sub-bands to the narrow-band UE, thus preventing resource wastage due to repeated transmission of the common message, and facilitating an increased resource utilization rate.

Description

Communication method, base station and user equipment

The present application claims priority to Chinese Patent Application No. 201210169144.0, entitled "Communication Method, Base Station and User Equipment", filed on May 28, 2012, the entire contents of . Technical field

Embodiments of the present invention relate to the field of wireless communications, and more particularly, to a communication method, a base station, and a user equipment. Background technique

The current Long Term Evolution (LTE) LTE version (Release) 8 system supports a maximum bandwidth of 20MHz, which is suitable for data throughput of user equipment (User Equipment, UE). The narrowband UE only has the ability to receive '〗, bandwidth, such as system bandwidth 1.4/3 /5MHz. When the system bandwidth is 20 MHz, according to the prior art, the narrowband UE cannot access the system with a bandwidth of 20 MHz.

In order to allow narrowband UEs to access the current LTE system, the conventional scheme divides dedicated subbands for narrowband UEs. The bandwidth of these subbands does not exceed the reception capability of the narrowband UE. The narrowband UE receives downlink data on these subbands. When initially accessing the network, the narrowband UE first receives a Physical Broadcasting Channel (PBCH) or an extended PBCH channel to obtain whether the cell supports narrowband UE access and each subband is in a physical downlink shared channel (Physical Downlmk Shared Channel). , referred to as PDSCH) Information on the location of the resource. The narrowband UE selects a subband to camp on and receives downlink data on the subband. When the location of the dedicated subband changes, the subband may be indicated by the PBCH or the extended PBCH channel, or the UE may be paged and notified to receive the updated system. Information, indicating the new position of the subband in the system message. A plurality of subbands are divided for the narrowband UE, and the narrowband UE is semi-statically resident on a certain subband to receive downlink data. The base station side needs to send public messages, such as paging messages, system messages, etc., on each sub-band. Especially for system messages, the content of system messages sent on multiple sub-bands is the same, but is sent multiple times, resulting in wasted resources and low efficiency. Summary of the invention

The embodiment of the invention provides a communication method, which enables the narrowband UE to access the current LTE system, and avoids repeatedly sending public messages and saves system resources.

In one aspect, a communication method is provided, the method comprising:

The physical downlink shared channel PDSCH determines a common message subband and a data subband;

Transmitting a public message to the user equipment UE in the common message subband;

Transmitting downlink data to the UE in the data subband.

In another aspect, a communication method is provided, the method comprising:

Receiving a public message sent by the base station in the public message subband;

Receiving downlink data sent by the base station in the data subband.

In another aspect, a communication method is provided, the method comprising:

Determining a common search space on the physical downlink shared channel PDSCH;

Transmitting, in the common search space, first downlink control information DCI for scheduling a system message, where the system message is used to indicate a location of a dedicated search space for the UE;

Transmitting, by the dedicated search space, a second DCI to the UE, where the second DCI is used to indicate a location of a downlink data resource that is sent to the UE; And transmitting downlink data to the UE at a location of the downlink data resource indicated by the second DCI. In another aspect, a communication method is provided, the method comprising:

Receiving, in the common search space, a first DCI sent by a base station for scheduling a system message, where the system message is used to indicate a location of a dedicated search space for the user equipment UE;

Receiving, in the dedicated search space, a second DCI sent by the base station, where the second DCI is used to indicate a location of a downlink data resource sent to the UE, where a location of the downlink data resource and a location of the dedicated search space Same in the bandwidth range of the UE;

Receiving downlink data sent by the base station at a location of the downlink data resource indicated by the second DCI.

In another aspect, a base station is provided, the base station including:

a processing unit, configured to determine a common message subband and a data subband in a physical downlink shared channel PDSCH; a sending unit, configured to send a common message to the user equipment UE in the common message subband, and also used in the data subband Sending downlink data to the UE.

In another aspect, a user equipment is provided, where the user equipment includes:

a processing unit, configured to determine a common message subband and a data subband in the physical downlink shared channel PDSCH; a receiving unit, configured to receive, in the common message subband, a public message sent by the base station; the receiving unit is further configured to: The data subband receives downlink data sent by the base station.

In another aspect, a base station is provided, where the base station includes:

a processing unit, configured to determine a common search space on the physical downlink shared channel PDSCH; a sending unit, in the common search space, send a first DCI for scheduling a system message, where the first DCI is used to indicate The location of the dedicated search space of the UE; The sending unit is further configured to send, in the dedicated search space, a second DCI for scheduling downlink data to the UE, where the second DCI is used to indicate a location of a downlink data resource that is sent to the UE; The sending unit is further configured to send downlink data to the UE at a location of the downlink data resource indicated by the second DCI. In another aspect, a user equipment is provided, where the user equipment includes: a processing unit, configured to determine a common search space on a physical downlink shared channel PDSCH; and a receiving unit, configured to receive, by the base station, in the common search space The first DCI of the scheduling system message, where the system message is used to indicate a location of a dedicated search space for the user equipment UE; the receiving unit is further configured to receive, in the dedicated search space, a second DCI sent by the base station, The second DCI is used to indicate a location of a downlink data resource that is sent to the UE, where a location of the downlink data resource and a location of the dedicated search space are within a bandwidth range of the UE; The location of the downlink data resource indicated by the second DCI, where the receiving unit is configured to receive downlink data sent by the base station. According to the embodiment of the present invention, by dividing the common message sub-band and the data sub-band, the common message and the data message can be sent to the narrow-band UE in different sub-bands respectively, thereby avoiding waste of resources caused by repeated sending of the common message, which is beneficial to improving resources. Utilization.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a schematic flow chart of a communication method according to an embodiment of the present invention; 2 is a schematic diagram of a location of a common message subband and a data subband determined according to an embodiment of the present invention; FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present invention;

4 is a schematic flow chart of a communication method according to an embodiment of the present invention;

FIG. 5 is a schematic flow chart of a communication method according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a base station according to an embodiment of the present invention;

Figure Ί is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive work are all within the scope of the present invention.

1 is a schematic flow chart of a communication method 100 in accordance with an embodiment of the present invention. As shown in Figure 1, method 100 includes:

110: sharing a channel in the physical downlink PDSCH determines a common message subband and a data subband;

120: Send a public message to the user equipment UE in the common message subband;

130: Send downlink data to the UE in the data subband.

The embodiments of the present invention will be specifically described below with reference to specific examples.

As shown in FIG. 2, for example, a common message subband, a data subband 1 and a data subband 2 can be determined on the PDSCH. The common message subband here is used to send a common message to the narrowband UE, and the data subband can be used. The downlink data is sent to the narrowband UE. The public message described herein refers to, for example, a public message sent by a base station to a user equipment for all UEs or a group of UEs in a cell. According to an embodiment of the present invention, the public message referred to herein includes a paging message, a System Information Block (SIB), a random access response message, and the like. The location of the common message subband on the PDSCH may be fixed, for example, the base station indicates to the UE the location of the common message subband on the PDSCH through the PBCH or the extended PBCH channel. In this case, after the step 110, the method of the embodiment of the present invention specifically includes: sending a physical broadcast channel PBCH or an extended PBCH to the UE, indicating the common message sub-in the PBCH or the extended PBCH. The position in the PDSCH. Alternatively, according to another aspect of the embodiment of the present invention, the location of the common message subband on the PDSCH may be determined by frequency hopping according to a preset frequency hopping mode. In this case, the step 110 specifically includes: determining, according to a preset first frequency hopping mode, a location of the common message subband in the PDSCH. The number of data subbands is related to the number of narrowband UEs that the cell accommodates. The number of data subbands can be set as needed. For example, several narrowband UEs share one data subband to improve resource utilization. In special cases, a dedicated data subband can even be set for a particular narrowband UE to meet the needs of a particular application scenario. The location of the data subband on the PDSCH may be fixed or semi-statically changed, for example, by the system message or higher layer signaling to inform the UE of the location of the data subband on the PDSCH. In this case, the step 120 specifically includes: sending, by the common message sub-band, an SIB or a radio resource control (Radio Resource Control), where the SIB or the upper layer RRC signaling is sent to the UE. Information carrying a location indicating the data subband in the PDSCH is carried. According to another aspect of the embodiment of the present invention, the position of the data subband on the PDSCH may also be determined by frequency hopping according to a preset frequency hopping mode. In this case, the step 110 specifically includes: determining a location of the data subband in the PDSCH according to a preset second frequency hopping mode. The frequency hopping mode adopted in the embodiment of the present invention is, for example:

3⁄4 O ) = U + (M - l) - f _m (n _subfram )modM ^J ) d ^ mod( — 1) + 1) mod

/ (- i) = o,

^ ^ 1

c = N ^csl{ where represents the available index corresponding to the inner common message subband, "mod" represents the modulo operation, ^ represents the subframe number, and the position of the data subband in the first subframe is calculated by the subframe number. The random number obtained. ^e (') is a pseudo-random sequence function, and ^e « is the initialization value of the random sequence function. For example, in the FDD (Frequency Division Duplexing) system, ^N m; in the TDD (Time Division Duplexing) system, "2 ² ^ ¹¹¹ ^ ⁴ ) - ¹ "^ ¹ ; M is The number of possible locations of the common message subband over the entire system bandwidth. The possible locations of each common message subband are fixed.

For paging messages, the base station can send the same paging message to the wideband UE and the narrowband UE. The difference is that the paging message sent to the broadband UE can be sent in the traditional manner, or can be sent on the common message sub-band, and the paging message sent to the narrowband UE can only be on the public message sub-band. send. According to another aspect of the embodiments of the present invention, the paging message sent to the narrowband UE may be different from the paging message sent to the broadband UE.

For a Random Access Response (RAR) message, the base station can send the same RAR message to the broadband UE and the narrowband UE. The difference is that the RAR message sent to the broadband UE can be sent in the traditional manner or on the common message sub-band, and the RAR message sent to the narrowband UE can only be sent on the common message sub-band. Implemented in accordance with the present invention In another aspect of the example, the RAR message sent to the narrowband UE may be different from the RAR message sent to the broadband UE. In this case, for example, the base station may identify a narrowband UE on a preamble or a Physical Random Access Channel (PRAH) resource, and send a RAR only for the narrowband UE on the common message subband. And message 4 of the random access procedure, that is, a random access conflict resolution (Contention Resolution) message.

For the system message block SIB, the base station can transmit the same SIB to the wideband UE and the narrowband UE. The difference is that the SIB sent to the broadband UE can be sent in the traditional manner or on the public message sub-band, and the SIB sent to the narrowband UE can only be sent on the common message sub-band. According to another aspect of the embodiments of the present invention, the SIB transmitted to the narrowband UE may be different from the SIB transmitted to the broadband UE.

According to an embodiment of the present invention, for a narrowband UE that initially accesses the network and a narrowband UE that is in an idle state, it is only necessary to receive a message on a common message subband. For example, if the common message subband is in the extended control channel E-PDCCH, the narrowband UE in the idle state can listen to the paging in the common search space of the E-PDCCH according to paging DRX (Discontinuous Reception). - Paging-Radio Network Temporary Identifier (RNTI) plus Downlink Control Information (DCI), and monitors SIB1 scrambled by SI-RNTI in subframe 5, and Other SIB messages are received on the corresponding subframe according to the period defined in SIB1. According to an embodiment of the invention, the narrowband UE initially accessing the network first receives the system message and the RAR on the common message subband.

According to an embodiment of the present invention, for a narrowband UE in a connected state, when the system message is updated, the base station may send a paging message to the narrowband UE on the data subband to indicate system message update. For the sake of distinction, such a paging message is referred to as a second paging message. The base station sends a narrowband UE to the UE during a system message modification period After the second paging message is sent, the narrowband UE of the connected state is not scheduled in the next system message modification period to ensure that the narrowband UE receives the updated SIB from the common message subband.

In the application scenario of the embodiment of the present invention, the payload of the public message may exceed the receiving capability of the narrowband UE. According to the embodiment of the present invention, a capacity of a transport block (TB) for carrying a common message may be determined according to a bandwidth of the UE, and a public message is sent to the user equipment UE in the common message sub-band based on the capacity, for example The TB capacity of the new category (Category) is defined for the narrowband UE, and the restricted common message can be received by the narrowband UE. Here, the capacity of the transport block TB refers to the maximum number of bits transmitted by the upper layer to the physical layer, and the maximum number of bits is determined by the size of the physical layer resource. The bandwidth of the UE determines the ability of the maximum number of bits that the UE can handle. The transmission of the public message is to ensure that the UE has the capability to process, so the transmission of the common message is determined according to the processing capability of the UE, and the size of the transport block of the public message transmitted by the high layer to the physical layer (ie, the number of bits of the transport block TB). Such a scheme facilitates the relatively small reception capability of compatible narrowband UEs.

According to another aspect of the embodiments of the present invention, the common message segment may also be sent within the common message subband and sent in consecutive subframes. In this case, the step 120 may include: transmitting, in the common message sub-band, a DCI to the UE, where the DCI includes segment indication information and a message segment carrying the common message, where the segment indication information A subframe indicating that there are other message segments carrying a common message after the current subframe. For example, a bit in the DCI is used as the segmentation indication information. When the value of the bit is 0, it indicates a message segment of the common message that is not segmentally transmitted after the subframe. When the bit is 1, the sub- The frame includes a message segment of the segmented transmitted common message, and the subsequent subframe also has a segment of the public message of the segmented transmission. In the case of a segment transmission public message, the public message may be sent to the broadband UE again in a one-time manner, so that the application scenario of the broadband UE and the narrowband UE may exist in the compatible network at the same time. The above is a description of the method of the embodiment of the present invention from the perspective of a base station. The method of the embodiment of the present invention is further explained below from the perspective of the UE. FIG. 3 is a schematic flow diagram of a method 300 in accordance with an embodiment of the present invention. As shown in FIG. 3, method 300 includes:

310: determining a common message subband and a data subband at the PD SCH;

320: receiving, in the common message subband, a public message sent by a base station;

330: Receive, in the data subband, downlink data sent by the base station.

It should be understood by those skilled in the art that, corresponding to the method on the base station side, the features of the embodiments of the present invention are also applicable to the UE side.

For example, after the step 310, the method may include: receiving a PBCH or an extended PBCH sent by the base station, indicating, in the PBCH or the extended PBCH, the common message subband in the PDSCH. s position.

According to an embodiment of the present invention, the step 310 may include: determining a location of the common message subband in the PDSCH according to a preset first frequency hopping mode.

According to an embodiment of the present invention, the step 320 may include: receiving the SIB or the high layer RRC signaling sent by the base station in the common message subband, where the SIB or the high layer RRC signaling carries the indication that the data subband is in the Information about the location in the PDSCH.

According to an embodiment of the present invention, the step 310 may include: determining a location of the data subband in the PDSCH according to a preset second frequency hopping mode.

According to an embodiment of the present invention, the method 300 may further include:

Receiving, in the data subband, a second paging message sent by the base station, where the second paging message is used to indicate a system message update;

Receiving an updated system message sent by the base station in the common message subband. According to an embodiment of the present invention, the step 320 further includes: determining, according to a bandwidth of the user equipment UE, a capacity of the transport block TB for carrying the common message, and receiving, according to the capacity, the public message sent by the base station in the common message subband. ,.

According to an embodiment of the present invention, step 320 further includes: receiving the public message segment according to a bandwidth of the user equipment UE.

According to the embodiment of the present invention, the public message segment is received in the common message sub-band according to the bandwidth of the user equipment UE, specifically:

Receiving, by the common message sub-band, a DCI sent by the base station, where the DCI includes segment indication information and a message segment carrying the common message, where the segment indication information is used to indicate that the public message is still after the current DCI. Message segment.

By dividing the common message subband and the data subband, the common message and the data message can be sent to the narrowband UE in different subbands respectively, which avoids waste of resources caused by repeated sending of the public message, and is beneficial to improving resource utilization.

According to another aspect of an embodiment of the present invention, a communication method is also proposed. As shown in FIG. 4, a communication method 400 according to an embodiment of the present invention includes:

410: Determine a common search space on the physical downlink shared channel PDSCH;

420: Send, in the common search space, a first DCI for scheduling a system message, where the system message is used to indicate a location of a dedicated search space for the UE;

430: Send, in the dedicated search space, a second DCI for scheduling downlink data to the UE, where the second DCI is used to indicate a location of a downlink data resource that is sent to the UE.

440: Send downlink data to the UE at a location of the downlink data resource indicated by the second DCI. According to the embodiment of the present invention, the common search space may be set to a preset position on the PDSCH, or the location of the common search space may be determined on the PDSCH by using a preset frequency hopping manner. According to the embodiment of the present invention, in the common search space, the base station may send a public message such as a paging message, a random access response message, or a message 4 of a random access procedure to the UE.

In addition, in order to meet the receiving capability requirement of the narrowband UE, the location of the dedicated search space and the location of the downlink data resource may be in the bandwidth range of the narrowband UE by using scheduling indication information in the first DCI and the second DCI. Therefore, the narrowband UE can acquire downlink control information and data resources in its frequency band.

From the perspective of the base station, as shown in FIG. 5, the method 500 of the embodiment of the present invention includes:

510: Determine a common search space on the physical downlink shared channel PDSCH;

520: Receive, in the public search space, a first DCI that is sent by a base station and that is used to schedule a system message, where the system message is used to indicate a location of a dedicated search space for the user equipment UE;

530: The second DCI sent by the base station is received in the dedicated search space, where the second DCI is used to indicate a location of a downlink data resource that is sent to the UE.

540: Receive downlink data sent by the base station at a location of the downlink data resource indicated by the second DCI.

According to the embodiment of the present invention, the common search space may be set to a preset position on the E-PDCCH, or the location of the common search space may be determined on the E-PDCCH by using a preset frequency hopping manner. According to the embodiment of the present invention, in the common search space, the UE may receive a public message such as a paging message, a random access response message, or a message 4 of a random access procedure sent by the base station.

In addition, in order to meet the receiving capability requirement of the narrowband UE, the location of the dedicated search space and the downlink data resource may be indicated by scheduling indication information in the first DCI and the second DCI. The location is within the bandwidth of the narrowband UE such that the narrowband UE can acquire downlink control information and data resources within its frequency band.

With such a scheme of the embodiment of the present invention, it is not necessary to explicitly indicate or define that the dedicated search space and the downlink resource location are in a narrow band, but it is invisibly natural to first through resource scheduling.

The embodiment of the present invention further provides a base station and a user equipment for implementing the method of the embodiment of the present invention. As shown in FIG. 6, a base station 600 according to an embodiment of the present invention includes:

The processing unit 610 is configured to determine a common message subband and a data subband in the physical downlink shared channel PDSCH;

The sending unit 620 is configured to send a public message to the user equipment UE in the common message subband, and to send downlink data to the UE in the data subband.

According to the embodiment of the present invention, the sending unit 620 is configured to send a physical broadcast channel PBCH or an extended PBCH to the UE, and indicate the common message subband in the PDSCH in the PBCH or the extended PBCH. s position.

According to the embodiment of the present invention, the processing unit 610 is configured to determine a location of the common message subband in the PDSCH according to a preset first frequency hopping mode.

According to an embodiment of the present invention, the public message is at least one of the following messages: a paging message pagmg, a random access response message RA, a random access procedure message 4, and a system message block SIB.

According to the embodiment of the present invention, the sending unit 620 is configured to send, by using the common message sub-band, SIB or high-layer RRC signaling to the UE, where the SIB or the high-layer RRC signaling carries the indication that the data sub-band is in the Information about the location in the PDSCH.

According to an embodiment of the present invention, the processing unit 610 is configured to determine a location of the data subband in the PDSCH according to a preset second frequency hopping mode. According to an embodiment of the present invention, the sending unit 620 is configured to send a second paging message to the UE in the data subband, where the second paging message is used to indicate a system message update.

The sending unit 620 is further configured to send the updated system message to the UE in the common message subband.

According to an embodiment of the present invention, the processing unit 61 is configured to determine, according to a bandwidth of the UE, a capacity of a transport block TB for carrying the common message, and the sending unit 620 is configured to use the capacity according to the capacity. The common message subband sends a public message to the user equipment UE.

According to an embodiment of the present invention, the sending unit 620 is configured to send the public message segment according to the bandwidth of the UE.

According to an embodiment of the present invention, the sending unit 620 is configured to send a DCI to the UE in the common message sub-band, where the DCI includes segment indication information and a message segment of the common message, where the segment indication The information is used to indicate a message segment of the public message after the current DCI.

As shown in FIG. 7, the user equipment 700 according to an embodiment of the present invention includes:

The processing unit 710 is configured to determine a common message subband and a data subband in the physical downlink shared channel PDSCH;

The receiving unit 720 is configured to receive, in the common message subband, a public message sent by the base station, where the receiving unit 720 is further configured to receive the downlink data sent by the base station in the data subband.

According to an embodiment of the present invention, the receiving unit 720 is further configured to receive a PBCH or an extended PBCH sent by the base station, and indicate, in the PBCH or the extended PBCH, the common message subband in the PDSCH. position.

According to the embodiment of the present invention, the processing unit 710 is configured to determine a location of the common message subband in the PDSCH according to a preset first frequency hopping mode. According to an embodiment of the present invention, the receiving unit 720 is configured to receive the SIB or the high layer RRC signaling sent by the base station in the common message subband, where the SIB or the upper layer RRC signaling carries the data subband in the Information about the location in the PDSCH.

According to the embodiment of the present invention, the processing unit 710 is configured to determine a location of the data subband in the PDSCH according to a preset second frequency hopping mode.

According to an embodiment of the present invention, the receiving unit 720 is configured to receive, by the data subband, a second paging message sent by the base station, where the second paging message is used to indicate a system message update; 720 is further configured to receive, in the common message subband, an updated system message sent by the base station. According to an embodiment of the present invention, the processing unit 710 is configured to determine, according to a bandwidth of the user equipment UE, a capacity of a transport block TB for carrying the common message, and the receiving unit 720 is configured to be in the public based on the capacity. The message subband receives the public message sent by the base station.

According to the embodiment of the present invention, the receiving unit 720 is configured to receive the public message segment according to the bandwidth of the user equipment UE.

According to an embodiment of the present invention, the receiving unit 720 is configured to receive, by using the common message sub-band, the base station to send a DCI, where the DCI includes segment indication information and a message segment of the common message, where the segment indication The information is used to indicate a message segment of the public message after the current DCI.

Another aspect of an embodiment of the present invention is directed to another base station and user equipment for implementing the method of another aspect of an embodiment of the present invention.

As shown in FIG. 8, a base station 800 according to another aspect of an embodiment of the present invention includes:

The processing unit 810 is configured to determine a common search space on the PDSCH;

The sending unit 820, in the common search space, sends a first DCI for scheduling a system message, where the system message is used to indicate a location of a dedicated search space for the UE; The sending unit 820 is further configured to send, in the dedicated search space, a second DCI for scheduling downlink data to the UE, where the second DCI is used to indicate a location of a downlink data resource that is sent to the UE; The sending unit 820 is further configured to send downlink data to the UE at a location of the downlink data resource indicated by the second DCI.

According to an embodiment of the present invention, the processing unit 810 is configured to set the common search space to a preset position on the PDSCH.

According to an embodiment of the invention, the processing unit 810 is configured to determine the common search space on the PDSCH by using a preset frequency hopping mode.

According to the embodiment of the present invention, the sending unit 820 is further configured to: send, in the common search space, a paging message, a random access response message RAR, or a random access procedure message 4.

As shown in FIG. 9, a user equipment 900 according to another aspect of an embodiment of the present invention includes:

The processing unit 910 is configured to determine a common search space on the PDSCH;

The receiving unit 920 is configured to receive, in the common search space, a first DCI that is used by the base station to send a system message, where the system message is used to indicate a location of a dedicated search space for the user equipment UE;

The receiving unit 920 is further configured to receive, in the dedicated search space, a second DCI sent by a base station, where the second DCI is used to indicate a location of a downlink data resource sent to the UE, where a location of the downlink data resource The receiving unit 920 is configured to receive the downlink data sent by the base station, where the location of the downlink data resource indicated by the second DCI is the same as the location of the dedicated search space. .

According to an embodiment of the present invention, the processing unit 910 is configured to set the common search space to a preset location on the PDSCH. According to an embodiment of the invention, the processing unit 910 is configured to determine the common search space on the PDSCH by using a preset frequency hopping mode.

According to an embodiment of the present invention, the receiving unit 920 is further configured to receive, in the common search space, the paging message paging, the random access response message RAR, or the random access procedure message 4 sent by the base station.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It will be apparent to those skilled in the art that the specific operation of the system, the device and the unit described above may be referred to the corresponding process in the foregoing method embodiments for the convenience of the description and the cleaning process, and details are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be located in one place, or Distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A communication method, the method comprising:

Transmitting downlink data to the UE in the data subband.

2. The method of claim 1 wherein

After the determining, by the physical downlink shared channel, the PDSCH, the common message subband and the data subband, the method further includes:

And transmitting, to the UE, a physical broadcast channel PBCH or an extended PBCH, where the location of the common message subband in the PDSCH is indicated in the PBCH or the extended PBCH.

3. The method of claim 1 or 2, wherein

The determining, by the physical downlink shared channel, the PDSCH, the common message subband and the data subband includes: determining a location of the common message subband in the PDSCH according to a preset first frequency hopping mode.

The method according to any one of claims 1 to 3, characterized in that

The public message is at least one of the following messages: paging message paging, random access response message RAR, message of random access procedure 4, system message block SIB.

The method according to any one of claims 1 to 4, characterized in that

Sending the public message to the user equipment UE in the common message sub-band includes:

Transmitting SIB or higher layer RRC signaling to the UE in the common message subband, wherein the SIB or higher layer RRC signaling carries information indicating a location of the data subband in the PDSCH.

The method according to any one of claims 1 to 4, characterized in that

The determining, by the physical downlink shared channel, the PDSCH, the common message subband and the data subband includes: determining a location of the data subband in the PDSCH according to a preset second frequency hopping mode.

The method according to any one of claims 1 to 6, wherein the method further comprises:

Sending, in the data subband, a second paging message to the UE, where the second paging message is used to indicate a system message update;

An updated system message is sent to the UE at the common message subband.

The method according to any one of claims 1 to 7, wherein the sending the public message to the user equipment UE in the common message sub-band further comprises: determining, according to the bandwidth of the UE, Carrying a capacity of the transport block TB of the common message, and transmitting a public message to the user equipment UE in the common message sub-band based on the capacity.

The method according to any one of claims 1 to 7, wherein

And the sending, by the common message sub-band, the public message to the user equipment UE, further comprising: sending, in the common message sub-band, the public message segment according to the bandwidth of the UE.

10. The method of claim 9 wherein:

And sending the public message segment according to the bandwidth of the UE, including:

Transmitting a DCI to the UE in the common message sub-band, where the DCI includes segment indication information and a message segment carrying the common message, where the segment indication information is used to indicate that there is a bearer after the current subframe. A sub-frame of other message segments of the public message.

A communication method, characterized in that the method comprises:

Receiving a public message sent by the base station in the common message subband;

Receiving downlink data sent by the base station in the data subband.

12. The method of claim 11 wherein

And receiving, by the base station, a PBCH or an extended PBCH, and indicating, in the PBCH or the extended PBCH, a location of the common message subband in the PDSCH.

13. The method of claim 11 or 12, wherein

The method according to any one of claims 11 to 13, wherein

The method according to any one of claims 11 to 14, wherein Receiving, by the common message sub-band, a public message sent by the base station, including:

Receiving SIB or higher layer RRC signaling sent by the base station in the common message subband, where the SIB or higher layer RRC signaling carries information indicating a location of the data subband in the PDSCH.

The method according to any one of claims 11 to 14, wherein

The method according to any one of claims 11 to 16, wherein the method further comprises:

Receiving an updated system message sent by the base station in the common message subband.

The method according to any one of claims 11 to 17, wherein

The receiving, by the common message sub-band, the public message sent by the base station, further includes: determining, according to a bandwidth of the user equipment UE, a capacity of a transport block TB for carrying the public message, and The common message subband receives the public message sent by the base station.

The method according to any one of claims 11 to 17, wherein

The receiving, by the common message sub-band, the public message sent by the base station, further includes:

Within the common message subband, the public message segment is received according to the bandwidth of the user equipment UE.

20. The method of claim 19, wherein

Receiving the public message segment according to the bandwidth of the UE, including:

Receiving, by the common message sub-band, the DCI sent by the base station, where the DCI includes segment indication information and a message segment carrying the common message, where the segment indication information is used to indicate that there is a bearer after the current subframe. A subframe of other message segments of the common message.

21. A communication method, the method comprising:

Transmitting, in the common search space, first downlink control information DCI for scheduling a system message, where the system message is used to indicate a location of a dedicated search space for the UE; Transmitting, in the dedicated search space, a second DCI to the UE, where the second DCI is used to indicate a location of a downlink data resource that is sent to the UE;

And transmitting downlink data to the UE at a location of the downlink data resource indicated by the second DCI.

22. The method of claim 21, wherein

The determining a common search space on the PDSCH includes:

The common search space is set at a preset position on the PDSCH.

23. The method of claim 21, wherein

The determining a common search space on the PDSCH includes:

The common search space is determined on the PDSCH using a preset frequency hopping pattern.

The method according to any one of claims 21 to 23, wherein the method further comprises:

Sending to the UE in the public search space: paging message paging, random access response message RAR or message 4 of the random access procedure.

25. A communication method, the method comprising:

26. The method of claim 25, wherein

The determining a common search space on the PDSCH includes:

The common search space is set at a preset position on the PDSCH.

27. The method of claim 25, wherein

Determining a common search space on the PDSCH includes:

The method according to any one of claims 25 to 27, wherein the method further comprises:

Receiving, in the common search space, the paging message paging, the random access response message RAR or the message 4 of the random access procedure sent by the base station.

29. A base station, the base station comprising:

a processing unit, configured to determine a common message subband and a data subband in the physical downlink shared channel PDSCH;

And a sending unit, configured to send a public message to the user equipment UE in the common message sub-band, and to send downlink data to the UE in the data sub-band.

30. The base station of claim 29, wherein

The sending unit is configured to send a physical broadcast channel PBCH or an extended PBCH to the UE, and indicate, in the PBCH or the extended PBCH, a location of the common message subband in the PDSCH.

31. The base station of claim 29, wherein:

The processing unit is configured to determine a location of the public message subband in the PDSCH according to a preset first frequency hopping mode.

32. The base station of claim 29, wherein

The sending unit is configured to send, by the common message sub-band, SIB or high-layer RRC signaling to the UE, where the SIB or high-layer RRC signaling carries information indicating a location of the data sub-band in the PDSCH. .

33. The base station of claim 29, wherein

The processing unit is configured to determine a location of the data subband in the PDSCH according to a preset second frequency hopping mode.

34. A user equipment, wherein the user equipment comprises:

a receiving unit, configured to receive, in the common message subband, a public message sent by the base station; the receiving unit is further configured to receive, in the data subband, downlink data sent by the base station.

35. The user equipment of claim 34, wherein The receiving unit is further configured to receive a PBCH or an extended PBCH sent by the base station, and indicate, in the PBCH or the extended PBCH, a location of the common message subband in the PDSCH.

36. The user equipment of claim 34, wherein

37. The user equipment of claim 34, wherein

The receiving unit is configured to receive the SIB or the high layer RRC signaling sent by the base station in the common message subband, where the SIB or the high layer RRC signaling carries a location indicating the location of the data subband in the PDSCH. information.

38. The user equipment of claim 34, wherein

39. A base station, wherein the base station comprises:

a processing unit, configured to determine a common search space on the physical downlink shared channel PDSCH; a sending unit, in the common search space, send a first DCI for scheduling a system message, where the first DCI is used to indicate The location of the dedicated search space of the UE;

The sending unit is further configured to send, in the dedicated search space, a second DCI for scheduling downlink data to the UE, where the second DCI is used to indicate a location of a downlink data resource that is sent to the UE; The sending unit is further configured to send downlink data to the UE at a location of the downlink data resource indicated by the second DCI.

40. The base station of claim 39, wherein:

The processing unit is configured to set the common search space to a preset position on the PDSCH.

41. The base station of claim 39, wherein:

The processing unit 810 is configured to determine the public search space on the PDSCH by using a preset frequency hopping mode.

42. A user equipment, the user equipment comprising:

a processing unit, configured to determine a common search space on the physical downlink shared channel PDSCH; a receiving unit, configured to receive, in the common search space, a first DCI that is sent by a base station and used to schedule a system message, where the system message is used to indicate a location of a dedicated search space for the user equipment UE;

The receiving unit is further configured to receive, in the dedicated search space, a second DCI sent by the base station, where the second DCI is used to indicate a location of a downlink data resource that is sent to the UE, where a location of the downlink data resource is The location of the dedicated search space is within the bandwidth of the UE;

And at a location of the downlink data resource indicated by the second DCI, the receiving unit is configured to receive downlink data sent by the base station.

43. The user equipment of claim 42, wherein

44. The user equipment of claim 42, wherein

The processing unit is configured to determine the public search on the PDSCH by using a preset frequency hopping mode