CN107690186B

CN107690186B - System message transmission method, system message receiving method, base station and user equipment

Info

Publication number: CN107690186B
Application number: CN201610633751.6A
Authority: CN
Inventors: 柯颋; 侯雪颖; 沈晓冬; 刘建军; 童辉; 徐晓东
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2016-08-04
Filing date: 2016-08-04
Publication date: 2021-07-20
Anticipated expiration: 2036-08-04
Also published as: CN107690186A

Abstract

The invention discloses a system message transmission method, a system message receiving method, a base station and user equipment, wherein the method comprises the following steps: and carrying and sending at least one key system message and/or one supplementary system message in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) of a DRS sending occasion.

Description

System message transmission method, system message receiving method, base station and user equipment

Technical Field

The present invention relates to information transmission technology in the field of communications, and in particular, to a system message transmission method, a system message reception method, a base station, and a user equipment.

Background

In the existing communication system, especially in the Long Term Evolution (LTE) system, the system messages are divided into MIB messages and SIB messages. For the UE in RRC idle state, only after the MIB message and SIB message are successfully received in sequence, the UE can initiate a random access procedure to obtain LTE system services.

In the unlicensed band, the system is open to all Radio Access Technologies (RATs) and all operators, and different operators have the same right to deploy respective RAT systems (e.g., WIFI and unlicensed band LTE) in the unlicensed band. Because sites deployed by different RAT operators (such as WIFI and unlicensed band LTE) are not subjected to interference coordination planning (such as site planning), the sites are not allowed to transmit services at the same time, otherwise, a strong mutual interference phenomenon is caused.

When the LTE system is applied to an unlicensed spectrum, there are a plurality of operating modes, including: a transmission mode based on carrier aggregation, a transmission mode based on dual connectivity, and an unlicensed spectrum LTE system independent deployment mode. In the operating mode in which the unlicensed spectrum LTE system is deployed independently, only the unlicensed spectrum is available, so the eNB needs to send system messages such as MIB messages and SIB messages on the unlicensed spectrum, and the UE needs to receive the MIB messages and SIB messages on the unlicensed spectrum. However, in the unlicensed spectrum application scenario, the conventional periodic MIB message and SIB message transmission rules will no longer be adapted.

Disclosure of Invention

The present invention mainly aims to provide a message transmission method, a base station and a system, which aim to solve the above problems in the prior art.

In order to achieve the above object, the present invention provides a system message transmission method, including:

and carrying and sending at least one key system message and/or one supplementary system message in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) of a DRS sending occasion.

The invention provides a system message receiving method, which comprises the following steps:

and the UE receives and demodulates at least one key system message and/or at least one supplementary system message in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) at the time of sending the DRS.

The invention provides a base station, comprising:

and an information sending unit, configured to carry and send at least one key system message and/or at least one supplemental system message in a physical downlink shared channel PDSCH and/or an enhanced physical downlink shared channel ePDSCH of a DRS sending occasion.

The present invention provides a user equipment, which is characterized in that the user equipment comprises:

an information receiving unit, configured to receive and demodulate at least one critical system message and/or at least one supplemental system message in a physical downlink shared channel PDSCH and/or an enhanced physical downlink shared channel ePDSCH at a DRS sending occasion.

The system message transmission method, the receiving method, the base station and the user equipment can select at least one key system message and a supplementary system message from the system messages, and select different transmission periods for each type of system messages in DRS opportunity and transmit the system messages. Therefore, the sending density of the system message is ensured, and the transmission reliability of the system message is ensured.

Drawings

FIG. 1 is a flow chart of a message transmission method according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the setup positions of various system messages in a period according to an embodiment of the present invention;

FIG. 3 is a first diagram illustrating the periodic division of various system messages according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating the periodic division of various system messages according to an embodiment of the present invention;

FIG. 5 is a block diagram of a base station according to an embodiment of the present invention;

fig. 6 is a configuration diagram of a ue according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.

The first embodiment,

The embodiment of the invention provides a system message transmission method, which comprises the following steps: and in the sending opportunity of the cell Discovery Reference Signal (DRS), sending at least one system message of the key system message and the supplementary system message.

Specifically, the system message transmission method provided in this embodiment, as shown in fig. 1, includes:

step 101: dividing at least one system message into at least one key system message and at least one supplementary system message;

step 102: and carrying and sending at least one key system message and/or one supplementary system message in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) of a DRS sending occasion.

The embodiment can be applied to a base station in a mobile communication system, and particularly can be applied to an evolved node b (eNB). It should be noted that the new application scenario described in this embodiment is not limited to applying the LTE technology to the unlicensed spectrum. The present embodiment can also be applied to other various communication systems, such as applying 5G technology to unlicensed spectrum. Furthermore, in some new LTE or 5G application scenarios, such as an ultra-dense networking scenario or a flexible uplink and downlink transmission scenario, the embodiment may also be applied to the licensed spectrum.

The present embodiment first describes time domain transmission of a system message, which is specifically as follows:

the transmission critical system message and the supplemental system message may be sent in a cell discovery reference signal sending opportunity.

Aiming at the LTE technology, the at least one system message at least comprises a master information block MIB and at least two system message blocks SIB; the at least two SIBs may be one or more of SIBs 1 to SIB13, and the specific number of the SIBs is not limited in this embodiment.

Dividing MIB in the at least one system message and partial SIB in the at least two SIB into key system messages; and dividing at least one SIB except the partial SIB divided into the first basic type into supplementary system messages.

Specifically, in the LTE system, the critical system messages may be system messages such as MIB messages, SIB1 messages, SIB2 messages, and the like; while other SIB messages are considered supplemental system messages.

For the 5G technology, the category of the system message may have other new definitions, and the affiliation between the key system message and the supplemental system message may be newly divided, which is not exhaustive in this embodiment.

Further, the method further comprises: transmitting a system message by finding an available subframe within a DMTC window configured for a reference signal transmission opportunity. The DMTC window is specifically a discovery reference signal transmission Timing Configuration (DRS Measurement Timing Configuration) window. In addition, the available subframe may be different in different application scenarios, for example, in an unlicensed spectrum application scenario, the available subframe may be determined according to a result of LBT on the base station side, and specifically, if the result of LBT on the base station side indicates that the subframe position may be used for transmitting data, the subframe may be an available subframe; in a 5G application scenario, the eNB may select an available subframe within the DMTC window to transmit the system message through a preset rule, for example, some technical criteria, which is not exhaustive in this embodiment.

For example, referring to fig. 2, it may be determined that 6ms is determined as the DMTC window in every 10ms radio subframe in the transmission subframe. Note that the eNB will only transmit 1 DRS occasion at most within each DMTC window.

The eNB first needs to configure the DMTC window. The default DMTC window configuration is standardized (i.e., the default DMTC transmission period and subframe offset are specified in the standard). The eNB selects a subset from the default DMTC window set to construct the DMTC window actually adopted by the eNB. The eNB tries to send a DRS signal in an actually adopted DMTC window;

setting the default DMTC window period as T1 and the subframe Offset as Offset 1;

the period of the DMTC window actually used by the eNB is N1 × T1, and the Offset is Offset1+ k × T1, where k is 0,1, …, N1-1;

the eNB notifies the served UE of the actually adopted DMTC window configuration (i.e. transmission period and transmission offset) through the first system message, where the specific notification field may be N1, k;

and/or the presence of a gas in the gas,

the eNB informs the served UE of the DMTC window configuration (i.e., transmission period and transmission offset) actually adopted by the neighboring cell through RRC signaling. The specific notification field may be N1, k if a default DMTC window period and subframe offset are defined. Otherwise, the specific notification field may be a transmission period and a transmission offset expressed in a subframe.

And transmitting the first system message in all or part of available subframes in the DMTC window according to a preset rule.

It should be further noted that, in the DMTC window set in this embodiment, the system messages are carried in a paging (paging) manner in the time domain, that is, some system messages are configured to be transmitted in each DMTC window, and some system messages are configured to be transmitted only in a part of the DMTC windows. Note that a system message is configured to be transmitted within a particular DMTC window, and does not necessarily have a transmission opportunity available on behalf of the system message.

A period and an offset (offset) are defined for each system message, wherein the period and the offset of the system message are defined on the basis of DMTC periods.

In this embodiment, the following time domain setting modes may be used:

a first, configuring a transmission period and a transmission offset for at least one system message; and the transmission period and the transmission offset are integer multiples of a DMTC window configured by finding the reference signal sending opportunity.

For information transmitted in each DRS transmission opportunity in this processing manner, referring to fig. 3, a transmission cycle and a transmission offset configuration of each system message are illustrated by table 1 in combination with fig. 3:

TABLE 1

On the basis of the processing at the base station side, further explaining a manner that the UE obtains the time domain configuration of the system message may include: the transmission period and transmission offset of some critical system messages are predefined by standard protocols. For example, in the present embodiment, the system message 1 and the second system message are predefined to be transmitted in each DMTC window by a standard protocol. Thus, the UE attempts to receive and demodulate the corresponding system message 1 and second system message at each DMTC window.

In particular, in fig. 3, a system message in which a transmission period and a transmission offset are previously specified by a standard protocol is referred to as a first-type critical system message. In the second system message, time domain configuration information of other parts of supplementary system information is carried, including transmission period and transmission offset.

When the UE successfully receives and demodulates the second system message, the transmission period and transmission offset of the other remaining system messages can be obtained. Then, the UE calculates its corresponding DMTC windows according to the transmission periods and the transmission offsets of the system messages, and then tries to receive and demodulate the corresponding system messages in the DMTC windows. In particular, in fig. 3, critical system messages in which a transmission period and a transmission offset are specified by a second system message are referred to as second-type critical system messages.

In particular, the second system message is the same as or different from the first system message. By the first system message being the same as the second system message, it is meant that the first system message includes a transmission period and a transmission offset of at least one other system message and/or system message group, and a DMTC window configuration parameter.

The information contained in the second system message may be referred to in table 2:

	number of DMTC cycles	Transmission offset	Remarks for note
				System message
2	1	0	Repeat in each DMTC
				System message
3	2	0	Period 2TDMTC
				System message
4	2	1	Period 2TDMTC
				System message
5	4	0	Period 4TDMTC
				System messages
6	4	1	Period 4TDMTC
				System messages
7	4	2	Period 4TDMTC
				System messages
8	4	3	Period 4TDMTC

TABLE 2

A second kind,

Establishing a mapping relation between a system message group and a system message SI window, wherein the system message group comprises at least one system message; configuring a transmission period and a transmission offset for at least one SI window; wherein, the transmission period and the transmission offset are integer multiples of the DMTC window.

By taking a concept of a System Information (SI) window in the LTE System as a reference, a period and an offset of the SI window are defined, and a mapping relationship between the SI window and the System message is defined, wherein the period and the offset of the SI window are defined on the basis of a DMTC period.

In the first time domain setting mode, the transmission period and transmission offset of some critical system messages are first predefined by a standard protocol. For example, in the present embodiment, the system message 1 and the second system message are predefined to be transmitted in each DMTC window by a standard protocol. Thus, the UE attempts to receive and demodulate the corresponding system message 1 and second system message at each DMTC window. In particular, in fig. 4, a system message in which a transmission period and a transmission offset are previously specified by a standard protocol is referred to as a first-type critical system message.

Controlling the second system message to inform the UE of the transmission period and the transmission offset of at least one supplementary system message and/or SI window based on the preset transmission period and transmission offset; specifically, in the second system message, the configuration information of the SI window corresponding to the other part of the system information group is carried, including the transmission period and the transmission offset of each SI window, and the mapping relationship between the SI window and at least one system message. After the UE successfully receives and demodulates the second system message, the transmission period and transmission offset of the SI window corresponding to the other remaining system message groups can be obtained. Then, the UE calculates its corresponding DMTC windows according to the transmission periods and transmission offsets of the SI windows, and then tries to receive and demodulate the corresponding system messages in the DMTC windows. In particular, in fig. 4, critical system messages in which a transmission period and a transmission offset are specified by a second system message are referred to as second-type critical system messages.

The information contained in the second system message may be referred to in table 3:

TABLE 3

Further, determining a first DMTC window for transmitting the system message or the system message group according to the configured transmission period and the configured transmission offset; transmitting the system message or the set of system messages through available subframes within the first DMTC window.

The sending, in the DRS sending occasion, at least one system message of the critical system message and the supplementary system message, including:

and at least one of the key system message and the supplementary system message is loaded in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) of the DRS sending occasion and sent.

Therefore, by adopting the scheme, at least one key system message and a supplementary system message can be selected from the system messages, and different transmission periods are selected in the DRS opportunity and transmitted for each type of system messages. Therefore, the sending density of the system message is ensured, and the transmission reliability of the system message is ensured.

Example II,

The embodiment of the invention provides a message transmission method, which comprises the following steps: and at least one key system message and/or one supplementary system message is carried in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) of a DRS sending occasion and is sent.

Based on the processing scenario provided in the first embodiment, the present embodiment gives emphasis to the frequency domain resource location for each type of system message, which is specifically as follows:

scene one,

And independently scheduling different frequency domain resource blocks for each system message, wherein the position of the frequency domain resource block of each system message is indicated by the DCI corresponding to each system message, and each DCI is scrambled by the corresponding DCI scrambling code special for the system message.

Specifically, for each system message, different frequency domain resource blocks are scheduled independently, and the frequency domain resource location of each system is indicated by DCI scrambled by SI-RNTI dedicated to each system message.

It should be understood that, in the mobile communication system, both the base station side and the User Equipment (UE) side define the corresponding dedicated SI-RNTI scrambling code for each system message in the standard protocol, for example, the dedicated scrambling code for each system message may be defined in the form of a mapping table.

Under the scene, the UE descrambles DCI signaling corresponding to the special SI-RNTI scrambling code in a DRS occase subframe to obtain the frequency domain resource position corresponding to the system information.

Scene two,

And scheduling all system messages into a first frequency domain resource block in a centralized manner, wherein the position of the first frequency domain resource block is indicated by first DCI, and the first DCI is scrambled by a first DCI scrambling code.

Specifically, all system messages transmitted in the same DMTC window are dispatched to the same frequency domain resource block in a centralized manner, and the position of the frequency domain resource block is indicated by DCI scrambled by the first SI-RNTI.

Scene three,

For system messages configured to be sent within each DMTC window, the second frequency domain resource blocks are scheduled collectively, and the locations of the second frequency domain resource blocks are specified by a protocol.

In an embodiment, the system information configured to be transmitted in each DMTC window may be key system information, that is, all the key system information is scheduled in the second frequency domain resource block.

Scene four,

And intensively scheduling the system messages configured to be transmitted in each DMTC window into a third frequency domain resource block, wherein the position of the third frequency domain resource block is indicated by second DCI, and the second DCI is scrambled by a second DCI scrambling code.

The difference between the current scene and the previous scene is that the frequency domain resource block of the key system information is not specified through a protocol in the current scene; but is indicated by the second DCI scrambled by the second DCI scrambling code.

Scene five,

For system messages not configured to be transmitted within each DMTC window, scheduling into a fourth frequency domain resource block collectively, and the location of the fourth frequency domain resource block is indicated by a third DCI, and the third DCI is scrambled with a third DCI scrambling code.

Specifically, in an embodiment, the system message not configured to be transmitted in each DMTC window may include a supplemental system message, and the portion of the system message is collectively scheduled into the same frequency-domain resource block, and the position of the frequency-domain resource block is indicated by the DCI scrambled by the third DCI, i.e., the third SI-RNTI.

A sixth scene,

Different frequency domain resource blocks are independently scheduled for each SI window, the frequency domain resource position of each SI window is indicated through corresponding DCI, and each DCI adopts the DCI scrambling code special for the corresponding SI window to scramble.

Specifically, different frequency domain resource blocks are independently scheduled for each SI window, and the frequency domain resource position of each SI window is indicated by DCI scrambled by SI-RNTI special for each SI window;

aiming at each SI window, defining a corresponding special SI-RNTI scrambling code in a standard protocol;

correspondingly, the UE descrambles the DCI signaling corresponding to the special SI-RNTI scrambling code in the DRS occase subframe to obtain the frequency domain resource position corresponding to the SI window.

In the various scenarios, at least one system message is transmitted through a PDSCH channel and/or an ePDSCH channel in a downlink burst traffic subframe cluster, and different DCI scrambling codes are set for DCI signals used for indicating the location of frequency domain resources of the system message in a DRS transmission occasion and DCI signals used for indicating the location of frequency domain resources of the system message in the downlink burst traffic subframe cluster. In addition, if the above scenarios simultaneously support that the system message is also carried in the PDSCH channel of the normal downlink subframe, and considering that the number of non-empty OFDM symbols used in the DRS occasion subframe and the normal downlink subframe may be different, it is required that the SI-RNTI scrambling code adopted in the DRS occasion subframe should be different from the SI-RNTI scrambling code used in the normal downlink subframe, so that the UE can perform correct rate matching operation on the received data according to the received SI-RNTI scrambling code sequence.

For the case that multiple system messages are simultaneously carried in the same spectrum resource block, the UE further distinguishes and confirms which system messages exist in the spectrum resource block.

The first method is as follows:

based on the scene about the frequency domain resource allocation, the system message contains a system message type identifier field for identifying the system message to which the current data block belongs;

correspondingly, the present embodiment further provides an allocation method for allocating multiple system messages to the same resource block:

and secondly, when one frequency domain resource block is used for scheduling at least one system message, arranging the system messages in the frequency domain resource block according to a preset sequence.

Specifically, the preset sequence may be that a plurality of system messages are arranged in a sequence from a small system message sequence number to a large system message sequence number; the plurality of system messages may be arranged in the order of the message sequence numbers from large to small. The preset sequence described in this embodiment is also only an example, and other sorting manners may be adopted, which is not exhaustive in this embodiment.

And thirdly, when one frequency domain resource block is used for scheduling at least one SI window, arranging the SI windows according to a preset sequence, and arranging at least one system message contained in each SI window according to the preset sequence.

And determining the arrangement sequence of the at least one system message contained in each SI window in the corresponding frequency resource block. Specifically, the specified system messages are firstly arranged according to the sequence of the SI window sequence numbers from small to large; then, inside each SI window, the system message sequence numbers are arranged in the order from small to large, or in the order from large to small, and other ordering manners may also be adopted, which is not exhaustive in this embodiment.

Therefore, by adopting the scheme, at least one key system message and a supplementary system message can be selected from the system messages, and different transmission periods are selected in the DRS opportunity and transmitted aiming at each type of system messages. Therefore, the sending density of the system message is ensured, and the transmission reliability of the system message is ensured.

Example III,

The embodiment provides a method for receiving a system message, which comprises the following steps:

The UE determines a DMTC window for listening to system messages according to at least one of the following methods, and receives and demodulates corresponding system messages in the determined DMTC window:

1) the method comprises the following steps: the UE obtains the transmission period and the transmission offset configuration of a default DMTC window, and determines a second DMTC window according to the obtained transmission period and the obtained transmission offset configuration. Wherein the transmission period and the transmission offset of the default DMTC window may be specified by a protocol to obtain the above configuration.

One embodiment is that when the UE is in RRC IDLE state, when the UE obtains frame/subframe timing, the UE expects the presence of DRS interference and attempts to receive the first system message within each default DMTC window.

Upon successful reception and demodulation of the first system message, the UE can confirm the DMTC window configuration actually used by its serving base station. Compared with the DRS occasting position which is completely randomly configured, the processing complexity of the RRC idle state UE for blind detection of the DRS occasting can be simplified through the operation, and further the power consumption of the UE can be reduced.

2) The second method comprises the following steps: the UE obtains the transmission period and the transmission offset configuration of the DMTC window, and determines a third DMTC window according to the obtained transmission period and the obtained transmission offset configuration.

The UE may obtain the transmission period and the transmission offset configuration of the DMTC window through RRC configuration specification of the primary carrier. Alternatively, the first and second electrodes may be,

as described in method one, the UE attempts to receive the first system message in each default DMTC window. Upon successful reception and demodulation of the first system message, the UE may obtain a transmission period and transmission offset configuration of the DMTC window.

After obtaining the DMTC window configuration, the UE further attempts to receive all or part of the system message in all or part of the DMTC window.

One embodiment is: the transmission period and transmission offset configuration of at least one critical system message are predefined by standard protocols. Wherein the at least one critical system message comprises a first system message and/or a second system message. Wherein the second system message comprises a transmission period and a transmission offset of at least one supplemental system message and/or the SI window. One default rule is to transmit the system message in every DMTC window.

Correspondingly, the UE listens to the above key system messages, including the second system message, in all or part of the actually configured DMTC windows based on the preset rule, so as to determine the DMTC window configurations (i.e., the transmission periods and transmission offsets of the DMTC windows) of other system messages and/or system message groups.

3) The third method comprises the following steps: when the UE simultaneously obtains the actual DMTC configuration and the transmission period and transmission offset configuration of each system message, the UE determines a fourth DMTC window according to the configured transmission period and transmission offset configuration; and the UE receives and demodulates the corresponding system message in the determined fourth DMTC window. In particular, the UE may listen to the second system message first, and then obtain the transmission period and the transmission offset corresponding to the other system messages.

4) The method four comprises the following steps: when the UE simultaneously obtains the actual DMTC configuration and the transmission period and transmission offset configuration of each SI window; the UE determines a fifth DMTC window according to the configured transmission period and transmission offset configuration; and the UE receives and demodulates the corresponding system message in the determined fifth DMTC window. Specifically, the UE may listen to the second system message first, and then obtain the transmission period and the transmission offset of the SI window corresponding to the other system message group.

It should be noted that the second to fifth DMTC windows may be the same or different, and the second to fifth DMTC windows may be the same or different from the first DMTC window mentioned in the foregoing embodiment.

Note that in the unlicensed spectrum LTE system, the eNB cannot guarantee that a downlink transmission opportunity is obtained in each DMTC, so the eNB tries to transmit DRS signals while the UE tries to receive DRS signals in the corresponding DMTC window.

For the eNB, the eNB operates through LBT, and when it is determined that the channel is idle, the DRS transmission occasion may be transmitted. The eNB refers to a subframe capable of transmitting the DRS transmission occasion as an available subframe. However, the UE cannot know in advance which subframes are available. The UE tries to blindly detect whether there is a DRS transmission opportunity in all subframes in the DMTC window.

Specifically, the UE attempts to demodulate a system message in a physical downlink shared channel of a DRS transmission occasion. That is, the UE may specifically receive and demodulate the system message in the physical downlink shared channel PDSCH and/or the enhanced physical downlink shared channel ePDSCH.

The following describes a manner of determining frequency domain resource blocks corresponding to system messages:

a first kind,

The UE tries to listen to the DCI scrambled by the DCI scrambling code special for the specific system message in all or part of the subframes in the determined DMTC window, and receives and demodulates the corresponding system message in the frequency domain resource block indicated by the listened DCI.

Each system message can correspond to one DCI scrambling code, and the corresponding DCI scrambling code can be stored in the UE side through a list in advance, so that the UE side can perform DCI descrambling based on the stored DCI scrambling code and obtain the system message indicated by the DCI.

A second kind,

And the UE tries to monitor DCI scrambled by a DCI scrambling code special for a specific SI window in all or part of subframes in the determined DMTC window, and receives and demodulates at least one system message contained in the corresponding SI window in a frequency domain resource block indicated by the monitored DCI.

That is, each SI window corresponds to a system message group, and a system message group includes at least one system message, which may be at least one of a critical system message and/or a supplementary system message. The DCI scrambling code corresponding to the SI window may be indicated according to a preset list.

A third one,

The UE tries to monitor DCI scrambled by any one of a first DCI scrambling code, a second DCI scrambling code and a third DCI scrambling code in all or part of subframes in the determined DMTC window; and receiving and demodulating a corresponding system message in a frequency domain resource block indicated by the sensed DCI.

When all system messages are loaded to one frequency domain resource block, one piece of DCI can be scrambled by one piece of DCI scrambling code to indicate the frequency domain resource block corresponding to the system messages. At this time, the first DCI scrambling code may correspond to a scenario in which all system messages are scheduled to the first frequency domain resource block; the second DCI scrambling code and the DCI corresponding to the second DCI scrambling code may be used for the system message sent in each DMTC window, and the system message is centrally scheduled to a scene of a third frequency domain resource block, where the DCI scrambled by the second DCI scrambling code is used for indicating; system messages not configured to be transmitted within each DMTC window may be scheduled collectively into a fourth frequency domain resource block to indicate DCI scrambled by a third DCI scrambling code.

A fourth step of,

The UE tries to receive and demodulate a corresponding system message in a second frequency domain resource block in all or part of subframes in the determined DMTC window; wherein the position of the second frequency domain resource block is a position specified by a protocol.

That is, the system message is demodulated at the location of the second frequency domain resource block as specified by the protocol.

The first method is as follows:

after the UE successfully demodulates the frequency domain resource block, the UE extracts a corresponding system message from a bit stream obtained by demodulation according to a system message type identifier field; wherein, the system message type identifier field is used for identifying the system message of the current data block;

the second method comprises the following steps:

after the UE successfully demodulates the frequency domain resource block, the UE firstly confirms which system messages are contained in the frequency domain resource block, and further confirms a preset arrangement sequence of the system messages in a bit stream obtained by demodulation, and then extracts corresponding system messages according to the preset arrangement sequence.

The third method comprises the following steps:

after the UE successfully demodulates the frequency domain resource block, the UE firstly determines which SI windows are included in the frequency domain resource block and which system messages are included in the SI windows, and further determines a preset arrangement sequence of the SI windows and the system messages included in the SI windows in a demodulated bitstream, and then extracts corresponding system messages according to the preset arrangement sequence.

Specifically, the specified system messages are firstly arranged according to the sequence of the SI window sequence numbers from small to large; then, inside each SI window, the system message sequence numbers are arranged in the order from small to large, or in the order from large to small, and other ordering manners may also be adopted, which is not exhaustive in this embodiment.

Example four,

An embodiment of the present invention provides a base station, as shown in fig. 5, including:

an information sending unit 51, configured to bear and send at least one key system message and/or at least one supplemental system message in a physical downlink shared channel PDSCH and/or an enhanced physical downlink shared channel ePDSCH of a DRS sending occasion.

Specifically, the base station further includes:

a configuration unit 52, configured to transmit a first system message through an available subframe within a DMTC window configured at each discovery reference signal transmission opportunity; wherein the first system message is a key system message;

and/or the presence of a gas in the gas,

a configuration unit 52, configured to transmit the second system message through the available subframes in the partial DMTC window; wherein the second system message is a critical system message or a supplemental system message.

Specifically, in the LTE system, the critical system messages may be system messages such as MIB messages, SIB1 messages, SIB2 messages, and the like; while the other SIB messages are considered as supplementary system messages, i.e. supplementary system messages. For the 5G technology, the category of the system message may have other new definitions, and the affiliation between the key system message and the supplemental system message may be newly divided, which is not exhaustive in this embodiment.

The available subframe may be different in different application scenarios, for example, in an unlicensed spectrum application scenario, the available subframe may be determined according to the LBT result, and specifically, the LBT result indicates that the subframe position may be used for transmitting data, and then the subframe may be an available subframe; in a 5G application scenario, the eNB may select an available subframe within the DMTC window to transmit the first system message through a preset rule, for example, some technical criteria, which is not exhaustive in this embodiment.

Transmitting a system message by finding an available subframe within a DMTC window configured for a reference signal transmission opportunity. The DMTC window is specifically a discovery reference signal transmission opportunity configuration window. In addition, the available subframe may be different in different application scenarios, for example, in an unlicensed spectrum application scenario, the available subframe may be determined according to a result of LBT on the base station side, and specifically, if the result of LBT on the base station side indicates that the subframe position may be used for transmitting data, the subframe may be an available subframe; in a 5G application scenario, the eNB may select an available subframe within the DMTC window to transmit the system message through a preset rule, for example, some technical criteria, which is not exhaustive in this embodiment.

the eNB informs the served UE of the actually adopted DMTC window configuration, e.g. N1, k, through one or more of first system message, RRC signaling.

In this embodiment, the following time domain setting modes may be used:

a first, configuring unit, configured to configure a transmission period and a transmission offset for at least one system message; and the transmission period and the transmission offset are integer multiples of a DMTC window configured by finding the reference signal sending opportunity.

For information transmitted in each DRS transmission opportunity in this processing manner, referring to fig. 3, a transmission cycle and a transmission offset configuration of each system message are illustrated by table 1 in combination with fig. 3. On the basis of the processing at the base station side, further explaining a manner that the UE obtains the time domain configuration of the system message may include: the transmission period and transmission offset of some critical system messages are predefined by standard protocols. For example, in the present embodiment, the system message 1 and the second system message are predefined to be transmitted in each DMTC window by a standard protocol. Thus, the UE attempts to receive and demodulate the corresponding system message 1 and second system message at each DMTC window.

In particular, the second system message is the same as or different from the first system message, i.e. the first system message includes the transmission period and transmission offset of at least one other system message and/or system message group, and the DMTC window configuration parameter.

The information contained in the second system message may be as shown in table 2.

A second kind,

The system comprises a configuration unit, a service unit and a service unit, wherein the configuration unit is used for establishing a mapping relation between a system message group and a system message SI window, and the system message group comprises at least one system message; configuring a transmission period and a transmission offset for at least one SI window; wherein, the transmission period and the transmission offset are integer multiples of the DMTC window.

Controlling the second system message to inform the UE of the transmission period and the transmission offset of at least one supplementary system message and/or SI window based on the preset transmission period and transmission offset; specifically, in the second system message, the configuration information of the SI window corresponding to the other part of the system information group is carried, including the transmission period and the transmission offset of each SI window, and the mapping relationship between the SI window and at least one system message. After the UE successfully receives and demodulates the second system message, the transmission period and transmission offset of the SI window corresponding to the other remaining system message groups can be obtained. Then, the UE calculates its corresponding DMTC windows according to the transmission periods and transmission offsets of the SI windows, and then tries to receive and demodulate the corresponding system messages in the DMTC windows. In particular, in fig. 4, critical system messages in which a transmission period and a transmission offset are specified by a second system message are referred to as second-type critical system messages. The information contained in the second system message may be as shown in table 3. Further, determining a first DMTC window for transmitting the system message or the system message group according to the configured transmission period and the configured transmission offset; transmitting the system message or the set of system messages through available subframes within the first DMTC window.

The sending, in the DRS sending occasion, at least one system message of the critical system message and the supplementary system message, including: and at least one of the key system message and the supplementary system message is loaded in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) of the DRS sending occasion and sent.

Specifically, each key system message is carried in a physical downlink shared channel PDSCH in a first transmission period; and determining a transmission time domain position corresponding to each supplementary system message according to the second transmission period and the transmission offset of each supplementary system message, and loading the supplementary system message in a Physical Downlink Shared Channel (PDSCH) corresponding to the transmission time domain position.

The following describes the frequency domain resource location of the system message for each class, and the configuration unit is further configured to perform at least one of the following processes:

scene one,

Scene two,

Specifically, one or more system messages of the system messages, all supplementary system messages and all non-critical system messages transmitted in the same DMTC window are intensively scheduled to the same frequency domain resource block, and the position of the frequency domain resource block is indicated by DCI scrambled by the first SI-RNTI.

Scene three,

The system information configured to be transmitted in each DMTC window may be key system information, that is, all the key system information is scheduled in the second frequency domain resource block.

Scene four,

Scene five,

Specifically, the system messages that are not configured to be transmitted in each DMTC window may include supplemental system messages, and the portions of the system messages are collectively scheduled in the same frequency domain resource block, and the position of the frequency domain resource block is indicated by DCI scrambled by the third DCI, i.e., the third SI-RNTI.

A sixth scene,

in a first mode, the configuration unit is further configured to arrange the system messages in the frequency domain resource block according to a preset sequence when one frequency domain resource block is used for scheduling at least one system message.

And the configuration unit is further configured to arrange the SI windows according to a preset order and arrange at least one system message included in each SI window according to the preset order when one frequency domain resource block is used for scheduling at least one SI window.

Therefore, by adopting the scheme, at least one key system message and a supplementary system message can be selected from the system messages, and different transmission periods are selected in the DRS opportunity and transmitted aiming at each type of system messages. Therefore, the sending density of the system message is ensured, the transmission reliability of the system message is ensured, and particularly, the performance of controlling the system message to carry out periodic transmission on the unauthorized frequency spectrum is ensured.

Example V,

The present embodiment provides a user equipment, as shown in fig. 6, the user equipment includes:

an information receiving unit 61, configured to receive and demodulate at least one critical system message and/or at least one supplemental system message in a physical downlink shared channel PDSCH and/or an enhanced physical downlink shared channel ePDSCH at a DRS sending occasion.

The user equipment further comprises:

a demodulation unit 62, configured to determine a DMTC window for intercepting a system message according to at least one of the following methods, and then receive and demodulate a corresponding system message within the determined DMTC window;

when the UE is in an RRC IDLE state, when the UE obtains frame/subframe timing, the UE expects DRS occast and system messages in each default DMTC window; compared with the DRS occasting position which is completely randomly configured, the processing complexity of the RRC idle state UE for blind detection of the DRS occasting can be simplified through the operation, and further the power consumption of the UE can be reduced.

When the UE is in an RRC connected state, the UE obtains the actual DMTC configuration of the attributive eNB through RRC configuration. And the UE monitors the DRS sending time and the system message in all or part of the DMTC window which is actually configured according to a preset rule. The transmission period and transmission offset configuration of at least one critical system message are predefined by standard protocols. Wherein the at least one critical system message comprises a first system message and/or a second system message. One default rule is to transmit the system message in every DMTC window. And the UE monitors the key system message in all or part of the practically configured DMTC window according to a preset rule.

the UE obtains the transmission period and the transmission offset configuration of a default DMTC window, and determines a second DMTC window according to the obtained transmission period and the obtained transmission offset configuration. The configuration can be obtained through the transmission period and the transmission offset of the DMTC window according to the protocol specification; one embodiment is that the UE attempts to receive the system message in every default DMTC window.

The UE obtains the transmission period and the transmission offset configuration of the DMTC window, and determines a third DMTC window according to the obtained transmission period and the obtained transmission offset configuration. Wherein, the transmission period and the transmission offset of the DMTC window can obtain the configuration through RRC configuration specification of the primary carrier; one embodiment is: the UE attempts to receive system messages, such as some critical system messages, in each DMTC window.

When the UE simultaneously obtains the actual DMTC configuration and the transmission period and transmission offset configuration of each system message, the UE determines a second DMTC window according to the configured transmission period and transmission offset configuration; the UE receives and demodulates the corresponding system message in the determined fourth DMTC window; in particular, the UE may listen to the second system message first, and then obtain the transmission period and the transmission offset corresponding to the other system messages.

When the UE simultaneously obtains the actual DMTC configuration and the transmission period and transmission offset configuration of each SI window; the UE determines a fifth DMTC window according to the configured transmission period and transmission offset configuration; and the UE receives and demodulates the corresponding system message in the determined fifth DMTC window.

Specifically, the UE may listen to the second system message first, and then obtain the transmission period and the transmission offset of the SI window corresponding to the other system message group.

a first kind,

The demodulation unit is configured to try to listen to the DCI scrambled by the DCI scrambling code dedicated to the specific system message in all or part of the subframes within the determined DMTC window, and receive and demodulate the corresponding system message in the frequency domain resource block indicated by the listened DCI.

A second kind,

The demodulation unit is configured to try to listen to the DCI scrambled by the DCI scrambling code specific to the specific SI window in all or part of the subframes within the determined DMTC window, and receive and demodulate at least one system message included in the corresponding SI window in the frequency domain resource block indicated by the listened DCI.

A third one,

The demodulation unit is used for trying to monitor the DCI scrambled by any one of the first DCI scrambling code, the second DCI scrambling code and the third DCI scrambling code in all or part of subframes in the determined DMTC window; and receiving and demodulating a corresponding system message in a frequency domain resource block indicated by the sensed DCI.

A fourth step of,

The demodulation unit is used for trying to receive and demodulate the corresponding system message in a second frequency domain resource block in all or part of the sub-frames in the determined DMTC window; wherein the position of the second frequency domain resource block is a position specified by a protocol.

The UE acquires a system message type identifier field from a system message; wherein, the system message type identifier field is used for identifying the system message of the current data block;

the demodulation unit is used for arranging and demodulating the system messages in a frequency domain resource block according to a preset sequence when at least one system message is detected from the frequency domain resource block;

And/or the presence of a gas in the gas,

a demodulation unit, configured to, when the UE detects at least one SI window from one frequency domain resource block, arrange the SI windows according to a preset order, arrange at least one system message included in each SI window according to the preset order, and demodulate the at least one system message according to the arranged order.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A method for system message transmission, the method comprising:

at least one key system message and/or one supplementary system message are loaded and sent in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) when a DRS is sent;

configuring a transmission period and a transmission offset for at least one critical system message and/or at least one supplemental system message; the transmission period and the transmission offset are integer multiples of DMTC windows configured for finding the reference signal sending opportunity; and/or establishing a mapping relation between a system message group and a system message SI window, wherein the system message group comprises at least one key system message or at least one supplementary system message; configuring a transmission period and a transmission offset for at least one SI window; wherein, the transmission period and the transmission offset are integer multiples of the DMTC window.

2. The transmission method according to claim 1, further comprising:

determining a first DMTC window for transmitting the at least one critical system message and/or the at least one supplemental system message, or for transmitting a group of system messages, according to the configured transmission period and transmission offset;

transmitting the at least one critical system message and/or at least one supplemental system message, or a group of system messages, over available subframes within the first DMTC window.

3. The method of claim 1, further comprising:

and informing the user equipment UE of the DMTC window configuration parameters of other cells through RRC signaling.

4. The method of claim 1, further comprising:

configuring the DMTC window to enable the configured DMTC window to be a subset of default DMTC window configuration;

and notifying the DMTC window configuration parameters to User Equipment (UE) through a first system message.

5. The transmission method according to claim 1, further comprising:

setting a transmission period and a transmission offset configuration of at least one key system message;

and controlling the second system message to inform the UE of the transmission period and the transmission offset of at least one supplementary system message and/or the SI window based on the preset transmission period and the transmission offset.

6. The method of claim 1, further comprising at least one of:

different frequency domain resource blocks are independently scheduled aiming at each key system message or supplementary system message, the position of the frequency domain resource block of each key system message or supplementary system message is indicated through DCI corresponding to each system message, and each DCI is scrambled by a DCI scrambling code special for the corresponding key system message or supplementary system message;

different frequency domain resource blocks are independently scheduled for each SI window, the frequency domain resource position of each SI window is indicated through corresponding DCI, and each DCI adopts a DCI scrambling code special for the corresponding SI window to scramble;

scheduling all key system messages and/or supplementary system messages into a first frequency domain resource block in a centralized manner, wherein the position of the first frequency domain resource block is indicated by first DCI, and the first DCI is scrambled by a first DCI scrambling code;

the key system messages and/or the supplementary system messages configured to be sent in each DMTC window are intensively scheduled into a second frequency domain resource block, and the position of the second frequency domain resource block is regulated by a protocol;

the method comprises the steps that key system messages and/or supplementary system messages configured to be sent in each DMTC window are intensively scheduled into a third frequency domain resource block, the position of the third frequency domain resource block is indicated by second DCI, and the second DCI is scrambled by a second DCI scrambling code;

for critical system messages and/or supplemental system messages that are not configured to be transmitted within each DMTC window, scheduling centrally into a fourth frequency domain resource block, and the location of the fourth frequency domain resource block is indicated by a third DCI, and the third DCI is scrambled with a third DCI scrambling code.

7. The method of claim 6, further comprising:

transmitting at least one key system message and/or at least one supplementary system message through a PDSCH channel and/or an ePDSCH channel in a downlink burst service subframe cluster;

and different DCI scrambling codes are set for the DCI signals used for indicating the frequency domain resource positions in the DRS transmission opportunity and the DCI signals used for indicating the frequency domain resource positions in the downlink burst service subframe cluster.

8. The method of claim 1, further comprising:

adding a system message type identifier field in the key system message and the supplementary system message; wherein the system message type identifier field is used for identifying the system message type to which the current data block belongs.

9. The method of claim 1, further comprising:

when one frequency domain resource block is used for scheduling at least one key system message and/or at least one supplementary system message, arranging the at least one key system message and/or the at least one supplementary system message in the frequency domain resource block according to a preset sequence;

and/or the presence of a gas in the gas,

when one frequency domain resource block is used for scheduling at least one SI window, the SI windows are arranged according to a preset sequence, and at least one key system message and/or at least one supplementary system message contained in each SI window are arranged according to the preset sequence.

10. A method for receiving a system message, the method comprising:

user Equipment (UE) receives and demodulates at least one key system message and/or at least one supplementary system message in a Physical Downlink Shared Channel (PDSCH) and/or an enhanced physical downlink shared channel (ePDSCH) when a DRS is sent; wherein the content of the first and second substances,

the transmission period and transmission offset of the at least one key system message and/or the at least one supplementary system message are integral multiples of the DMTC window; and/or the transmission period and the transmission offset of the system message SI window corresponding to the system message group are integral multiples of the DMTC window.

11. The receiving method according to claim 10, characterized in that the method further comprises:

the UE determines a DMTC window for listening system messages according to at least one of the following methods, and receives and demodulates at least one key system message and/or at least one supplementary system message in the determined DMTC window:

the UE obtains the transmission period and transmission offset configuration of a default DMTC window, and determines a second DMTC window according to the obtained transmission period and transmission offset configuration;

the UE obtains the transmission period and transmission offset configuration of the DMTC window, and determines a third DMTC window according to the obtained transmission period and transmission offset configuration;

the UE obtains the transmission period and transmission offset configuration of each key system message or each supplementary system message, and the UE determines a fourth DMTC window according to the configured transmission period and transmission offset configuration;

the UE obtains the transmission period and transmission offset configuration of each SI window; and the UE determines a fifth DMTC window according to the configured transmission period and transmission offset configuration.

12. The receiving method according to claim 11, characterized in that the method further comprises:

and the UE obtains the transmission period and the transmission offset of at least one key system message or supplementary system message and/or system message group through the second system message.

13. The receiving method according to claim 10, further comprising at least one of:

the UE monitors DCI scrambled by a DCI scrambling code special for a specific system message in all or part of subframes in the determined DMTC window, and receives and demodulates the corresponding system message in a frequency domain resource block indicated by the monitored DCI;

the UE monitors DCI scrambled by a DCI scrambling code special for a specific SI window in all or part of subframes in the determined DMTC window, and receives and demodulates at least one key system message or supplementary system message contained in the corresponding SI window in a frequency domain resource block indicated by the monitored DCI;

the UE monitors DCI scrambled by any one of a first DCI scrambling code, a second DCI scrambling code and a third DCI scrambling code in all or part of subframes in the determined DMTC window; receiving and demodulating a corresponding system message in a frequency domain resource block indicated by the monitored DCI;

the UE receives and demodulates corresponding key system messages or supplementary system messages in second frequency domain resource blocks in all or part of subframes in the determined DMTC window; wherein the position of the second frequency domain resource block is a position specified by a protocol.

14. The receiving method according to claim 10, further comprising:

obtaining a system message type identifier field in a key system message and a supplementary system message; wherein the system message type identifier field is used for identifying the system message type to which the current data block belongs.

15. The method of claim 10, further comprising:

when the UE confirms that one frequency domain resource block at least comprises one key system message and/or supplementary system message, the corresponding key system message and/or supplementary system message is proposed from the demodulation data according to the preset system message arrangement sequence;

and/or the presence of a gas in the gas,

when the UE confirms that one frequency domain resource block at least comprises one SI window and the SI window at least comprises one system message, the corresponding key system message or supplementary system message is proposed from the demodulation data according to the preset SI window arrangement sequence and the arrangement sequence of the system messages in the SI window.

16. A base station, characterized in that the base station comprises:

an information sending unit, configured to carry and send at least one key system message and/or at least one supplemental system message in a physical downlink shared channel PDSCH and/or an enhanced physical downlink shared channel ePDSCH at a DRS sending occasion;

a configuration unit for configuring a transmission period and a transmission offset for at least one critical system message and/or at least one supplementary system message; the transmission period and the transmission offset are integer multiples of DMTC windows configured for finding the reference signal sending opportunity; and/or, a configuration unit, configured to establish a mapping relationship between a system message group and a system message SI window, where the system message group includes at least one key system message or at least one supplementary system message; configuring a transmission period and a transmission offset for at least one SI window; wherein, the transmission period and the transmission offset are integer multiples of the DMTC window.

17. The base station of claim 16,

the configuration unit is configured to determine, according to the configured transmission cycle and transmission offset, a first DMTC window for transmitting at least one critical system message and/or at least one supplementary system message, or for transmitting a system message group;

correspondingly, the information sending unit is configured to transmit the at least one critical system message and/or the at least one supplementary system message, or the system message group, through an available subframe in the first DMTC window.

18. The base station of claim 16, wherein the configuring unit is configured to configure the DMTC window such that the configured DMTC window is a subset of a default DMTC window configuration.

19. The base station according to claim 18, wherein the configuring unit is configured to notify the DMTC window configuration parameter to the user equipment UE through a first system message;

and/or the presence of a gas in the gas,

20. The base station of claim 18, wherein the configuration unit is configured to preset a transmission period and a transmission offset configuration of at least one critical system message;

and/or the presence of a gas in the gas,

21. The base station according to claim 16, wherein the configuration unit is further configured to perform at least one of the following processes:

22. The base station according to claim 21, wherein the configuration unit is further configured to send at least one critical system message and/or at least one supplemental system message through a PDSCH channel and/or an ePDSCH channel in a downlink burst traffic subframe cluster; and different DCI scrambling codes are set for DCI signals used for indicating the positions of the frequency domain resources of the system messages in the DRS sending opportunity and DCI signals used for indicating the positions of the frequency domain resources of the system messages in the downlink burst service subframe cluster.

23. The base station of claim 16, wherein the configuration unit is further configured to add a system message type identifier field in critical system messages and supplemental system messages; wherein the system message type identifier field is used for identifying the system message type to which the current data block belongs.

24. The base station according to claim 16, wherein the configuration unit is further configured to arrange at least one critical system message and/or at least one supplementary system message in one frequency domain resource block according to a preset order when the one frequency domain resource block is used for scheduling the at least one critical system message and/or the at least one supplementary system message;

and/or the presence of a gas in the gas,

25. A user equipment, the user equipment comprising:

an information receiving unit, configured to receive and demodulate at least one key system message and/or at least one supplemental system message in a physical downlink shared channel PDSCH and/or an enhanced physical downlink shared channel ePDSCH at a DRS sending occasion; wherein the content of the first and second substances,

the transmission period and transmission offset corresponding to the at least one key system message and/or the at least one supplementary system message are integral multiples of the DMTC window; and/or the transmission period and the transmission offset of the system message SI window corresponding to the system message group are integral multiples of the DMTC window.

26. The user equipment of claim 25, wherein the user equipment further comprises:

a demodulation unit for determining a DMTC window for listening to system messages according to at least one of the following methods:

receiving and demodulating a corresponding at least one critical system message and/or at least one supplemental system message within the determined DMTC window:

acquiring a transmission period and transmission offset configuration of a default DMTC window, and determining a second DMTC window according to the acquired transmission period and transmission offset configuration;

acquiring a transmission cycle and transmission offset configuration of a DMTC window, and determining a third DMTC window according to the acquired transmission cycle and transmission offset configuration;

acquiring the transmission period and transmission offset configuration of each system message, and determining a fourth DMTC window by the UE according to the configured transmission period and transmission offset configuration;

acquiring a transmission period and a transmission offset configuration of each SI window; and the UE determines a fifth DMTC window according to the configured transmission period and transmission offset configuration.

27. The UE of claim 26, wherein the information receiving unit is configured to obtain a transmission period and a transmission offset of at least one critical system message and/or at least one supplementary system message and/or a system message group via the second system message.

28. The UE of claim 25, wherein the information receiving unit is configured to perform at least one of the following:

in all or part of subframes in the determined DMTC window, monitoring DCI scrambled by a DCI scrambling code special for a specific system message, and receiving and demodulating corresponding key system messages or supplementary system messages in frequency domain resource blocks indicated by the monitored DCI;

in all or part of subframes in the determined DMTC window, monitoring DCI scrambled by a DCI scrambling code special for a specific SI window, and receiving and demodulating at least one key system message and/or supplementary system message contained in the corresponding SI window in a frequency domain resource block indicated by the monitored DCI;

in all or part of the sub-frames in the determined DMTC window, monitoring DCI scrambled by any one of a first DCI scrambling code, a second DCI scrambling code and a third DCI scrambling code; receiving and demodulating corresponding key system messages or supplementary system messages in the monitored frequency domain resource blocks indicated by the DCI;

receiving and demodulating a corresponding key system message or a supplementary system message in a second frequency domain resource block in all or part of subframes in the determined DMTC window; wherein the position of the second frequency domain resource block is a position specified by a protocol.

29. The user equipment of claim 28, wherein the user equipment further comprises:

a demodulation unit, for obtaining the system message type identifier field in the key system message and the supplementary system message; wherein the system message type identifier field is used for identifying the system message type to which the current data block belongs.

30. The user equipment of claim 28, wherein the user equipment further comprises:

the demodulation unit is used for arranging and demodulating the key system messages and/or the supplementary system messages in a frequency domain resource block according to a preset sequence when at least one key system message and/or supplementary system message is detected from the frequency domain resource block;

and/or the presence of a gas in the gas,

a demodulation unit, configured to, when at least one SI window is detected from one frequency domain resource block, arrange the SI windows according to a preset order, arrange at least one system message included in each SI window according to the preset order, and demodulate the at least one key system message and/or the supplemental system message according to the arranged order.