CN104349290A - Methods and equipment for sending and receiving paging message in MTC (machine type communication) - Google Patents

Abstract

The present invention provides a method for sending a paging message in machine type communication (MTC), comprising: calculating a cyclic redundancy check (CRC) code of the paging message, wherein the paging message includes a target MTC device identification; appending the calculated CRC code to the paging message; removing at least a part of the identification of the target MTC device from the paging message; sending the paging message. The present invention also provides a method for receiving a paging message in machine type communication (MTC), as well as a base station and an MTC device corresponding to the above method. The present invention simplifies the paging message for low-cost MTC UE with coverage enhancement, the payload size of paging message is reduced, and the coverage enhancement requirement of specific UE is well supported, thereby improving the paging message for low-cost MTC UE. UE spectral efficiency.

Description

Method and apparatus for sending and receiving paging messages in machine type communications

technical field

Embodiments of the present invention generally relate to methods and apparatus for sending and receiving paging messages. More particularly, embodiments of the present invention relate to a method of transmitting and receiving a paging message in machine type communication, a base station, and a machine type communication device.

Background technique

A Machine Type Communication (MTC) device is a type of User Equipment (UE) used by a machine for a specific application. One example of such an MTC device is a smart utility meter. Some of these smart meters are located in basements, they suffer from high penetration loss, and therefore it is difficult for MTC devices to communicate with the network. Therefore, a new work item for low-cost MTC UE and coverage enhancement has been approved in 3GPP. The goal of coverage enhancement is to extend the coverage of such MTC UEs by 15dB. These UEs are referred to as CE-MTC (Coverage Enhanced MTC) UEs in the present invention.

Repetition was identified as the main technique to enhance coverage. The number of repetitions required is expected to be very large (tens or even hundreds), which has a significant impact on spectral efficiency. In an actual cellular network, for different MTC devices in coverage blind spots, the required amount of coverage extension is likely to vary between 0 dB and 15 dB. In order to alleviate the spectrum efficiency loss caused by repeated transmission, it is necessary to configure different coverage enhancement levels for MTC UEs with different coverage requirements. Paging is used to notify UEs in idle mode by broadcasting a paging message for UEs in all cells within the tracking area. In the existing paging message, multiple UEs are multiplexed into one paging message, and the paging message is broadcast in all cells in the tracking area. Paging messages are therefore designed to reach UEs in the cell with the worst radio conditions. However, this mechanism becomes very inefficient for CE-MTC because the number of repetitions between CE-MTC UEs with the weakest radio conditions (i.e. 15dB coverage holes) and acceptable radio conditions (e.g. 5dB coverage holes) The difference is significant. Therefore, the technical problem to be solved is to find an efficient way to transmit paging messages for CE-MTC UEs.

In a recent RAN1#73 meeting, 3GPP has just discussed and agreed on a general strategy to support multiple coverage enhancement levels for low-cost MTC UEs to mitigate the spectrum efficiency of coverage-enhanced MTC. Traditional paging messages do not support such features and cause waste of resources. As far as the inventors are aware, there is currently no substantive discussion regarding UE-specific coverage enhancement level support, and for paging message simplification to make transmission of paging messages efficient.

Contents of the invention

In view of this, the basic idea of the technical solution of the embodiment of the present invention takes the paging message for a specific CE-MTC UE as the target, and simplifies the paging message.

Therefore, according to a first aspect of an embodiment of the present invention, a method for sending a paging message in Machine Type Communication (MTC) is provided. The method includes: calculating a cyclic redundancy check (CRC) code of a paging message, wherein the paging message includes an identifier of a target MTC device; appending the calculated CRC code to the paging message; removing at least a part of the identity of the target MTC device from the paging message; and sending the paging message.

According to a second aspect of embodiments of the present invention, there is provided a method of receiving a paging message in Machine Type Communication (MTC). The method includes: the MTC device receives a paging message; the MTC device attaches at least a part of its own identity to the received paging message; performs a CRC check on the paging message to which the MTC device identity is added; if If the CRC check passes, the MTC device determines that the paging message is sent to itself; if the CRC check fails, the MTC device discards the paging message.

According to a third aspect of the embodiments of the present invention, there is provided a base station, including: a calculation module configured to calculate a cyclic redundancy check (CRC) code of a paging message, wherein the paging message includes a target machine type An identification of a communication (MTC) device; a paging message processing module configured to attach the calculated CRC code to the paging message, and remove all of the target MTC device from the paging message at least a part of the identification; a sending module configured to send the paging message.

According to a fourth aspect of the embodiments of the present invention, there is provided a machine type communication (MTC) device, including: a receiving module configured to receive a paging message; a computing module configured to convert at least Part of it is added to the received paging message, and a CRC check is performed on the paging message with the identifier of the MTC device; the judging module is configured to: if the CRC check passes, the MTC device determines The paging message is sent to itself; if the CRC check fails, the MTC device discards the paging message.

According to a fifth aspect of the embodiments of the present invention, a communication system is provided, including the foregoing base station and a machine type communication device.

According to the technical solution of the embodiment of the present invention, the paging message for the low-cost MTC UE with enhanced coverage is simplified. The payload size of paging messages is reduced and the coverage enhancement needs of specific UEs are well supported. As a result, spectral efficiency for low-cost MTC UEs is improved.

Description of drawings

Fig. 1 shows a flowchart of a method for sending a paging message in Machine Type Communication (MTC) according to an embodiment of the present invention.

Fig. 2 shows a flow chart of a method for receiving a paging message in Machine Type Communication (MTC) according to an embodiment of the present invention.

Fig. 3 shows a structural block diagram of a base station according to an embodiment of the present invention.

Fig. 4 shows a structural block diagram of a machine type communication (MTC) device according to an embodiment of the present invention.

Fig. 5 shows a flow chart of directly removing all or part of UE-identified simple paging messages for MTC according to an embodiment of the present invention.

Fig. 6 shows a flowchart of receiving a paging message by a UE according to an embodiment of the present invention.

Detailed ways

Next, embodiments of the present invention will be described in detail. In the following description, some specific embodiments are only used for the purpose of description, and should not be construed as limiting the invention, and these embodiments are only examples of the present invention. It should be pointed out that the embodiments only describe the differences between the present invention and the prior art, and omit descriptions of conventional structures or means, so as not to cause unclear understanding of the present invention.

First, the inventors realized that a CE-MTC UE has no mobility and thus will be attached to a single cell during idle mode. It should be realized that many CE-MTC UEs are only operational during non-busy hours of the day (eg, 1am to 3am), where it will enter the idle state after sending/receiving short messages. Such spectrum is very inefficient and therefore CE-MTC UEs will most likely be switched off. Therefore, it is very unlikely that there will be any change in the cell during idle mode. This allows paging messages to be targeted to specific CE-MTC UEs using a repetition number appropriate to the radio conditions of the specific CE-MTC UE.

Further, the inventors realized that the first aspect of using existing paging messages to target a single UE would reduce the multiplexing gain and increase the average payload size. If each paging message only corresponds to a specific user's message, then the paging message can determine the appropriate number of repetitions according to the needs of the specific user to avoid unnecessary redundant repetition; and the paging message can be repeated through additional simplification. With the loss of gain, it even brings about the improvement of spectral efficiency. This is done by reducing the size of the user identity in the paging message, eg IMSI or S-IMSI, by transmitting only part of the user identity in the message and the remaining part is masked together with the CRC of the transport block. It should be noted that for such paging messages the legacy P-RNTI is no longer used and thus not masked to the CRC.

In the 3GPP discussion, one alternative is that the PDCCH is not used to indicate possible paging messages to the CE-MTC UE, and the predefined PDSCH resource (eg, indicated in the SIB or in the specification) is used to carry the paging message information. The present invention fully supports the application of this alternative. This PDSCH resource will be repeated and will start at the beginning in the subframe of the paging occasion where the paging message is expected. It should be noted that if there is no paging message, this PDSCH resource can be used for other transmissions and a CE-MTC UE attempting to decode it for a paging message will fail.

Recently, 3GPP proposed to improve the coverage of low-cost MTC UE by 15dB to bring enterprise benefits to MTC vendors and operators. All physical channels that need to be enhanced are based on minimum coupling loss (MCL) calculations. To accomplish this goal, temporal repetition is considered as the most important method.

According to recent simulation results, tens to hundreds of repetitions are required to satisfy the most demanding requirements. However, note that 15dB is only an extreme case, and due to different deployment locations, most MTC UEs may not need such a huge improvement, due to the loss of spectral efficiency, it is not efficient for all MTC UEs to repeat the spectrum the most times . In the recent 3GPP RAN1#73 meeting, a more efficient way was proposed and supported. The key idea is to support multiple levels of coverage enhancement in one cell. For each individual UE, the information is repeated an appropriate number of times according to the best matching coverage enhancement level based on its channel conditions.

However, it is not easy to flexibly support different UE-specific coverage enhancement levels when paging messages are transmitted. The reason is that paging information for multiple UEs is usually multiplexed in one paging message. Therefore, to ensure successful reception by all relevant UEs, the paging message must support the worst UE coverage enhancement level. As a result, paging information for other UEs is excessively repeated. This is a waste of resources, especially considering the significant difference in the number of transmissions required between different levels of coverage enhancement.

Embodiments of the present invention propose an efficient scheme to support specific UE coverage enhancement levels for paging messages. Embodiments of the present invention set each paging message to serve only one specific UE. In such a scenario, embodiments of the present invention simplify the paging message, greatly reducing the payload size of the paging message by at least partially removing the UE identity field. The removed part of the UE identity is obtained by CRC check. In a word, the embodiments of the present invention can obtain at least two advantages: the average payload size for paging a UE is reduced, and the UE-specific coverage enhancement level is well supported.

Exemplary embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings.

Fig. 1 shows a flowchart of a method for sending a paging message in Machine Type Communication (MTC) according to an embodiment of the present invention.

In step 110, a cyclic redundancy check (CRC) code of the paging message is first calculated, wherein the paging message includes an identifier of a target MTC device. According to a preferred embodiment of the present invention, the identifier of the MTC device may be IMSI or S-TMSI. According to another preferred embodiment of the present invention, 1 bit in the bit map (bit map) in the paging message is used to indicate whether the identifier is IMSI or S-TMSI. According to other embodiments of the present invention, the identifier of the MTC device may also be other identifiers used to identify the user equipment. According to another preferred embodiment of the present invention, the MTC device may be a coverage-enhanced MTC (CE-MTC) device.

In step 120, the calculated CRC code is appended to the paging message.

In step 130, at least a part of the target MTC device identity is removed from the paging message. According to an embodiment of the present invention, all of the target MTC device identity can be removed from the paging message. According to another embodiment of the present invention, part of the identity of the target MTC device may also be removed from the paging message.

In step 140, a paging message is sent. According to a preferred embodiment of the present invention, the paging message is channel-coded before being sent. According to another preferred embodiment of the present invention, according to the channel environment of the target MTC device, the number of repeated transmissions of the paging message can be determined, and the repeated transmission of the paging message can be performed.

FIG. 2 shows a flowchart of a method for receiving a paging message in Machine Type Communication (MTC) according to the present invention.

In step 210, the MTC device receives a paging message. According to a preferred embodiment of the present invention, the MTC device may be a coverage-enhanced MTC (CE-MTC) device. According to another preferred embodiment of the present invention, the paging message is subjected to channel decoding after reception.

In step 220, the MTC device appends at least a part of its identity to the received paging message. According to an embodiment of the present invention, the MTC device may only add a part of its identity to the received paging message. According to another embodiment of the present invention, the MTC device may also add all of its own identity to the received paging message. According to an embodiment of the present invention, the identifier of the MTC device is IMSI or S-TMSI. According to another embodiment of the present invention, 1 bit in the bitmap in the paging message is used to indicate whether the identifier is an IMSI or an S-TMSI. According to other embodiments of the present invention, the identifier of the MTC device may also be other identifiers used to identify the user equipment.

In step 230, a CRC check is performed on the paging message with the identifier of the MTC device attached.

In step 240, if the CRC check passes, the MTC device determines that the paging message is sent to itself; if the CRC check fails, the MTC device discards the paging message.

Fig. 3 shows a structural block diagram of a base station 300 according to the present invention.

As shown in FIG. 3 , the base station 300 includes a calculation module 310 . The calculation module 310 is configured to calculate a cyclic redundancy check (CRC) code of a paging message, wherein the paging message includes an identification of a target machine type communication (MTC) device. According to a preferred embodiment of the present invention, the identifier of the MTC device may be IMSI or S-TMSI. According to another preferred embodiment of the present invention, 1 bit in the bitmap in the paging message is used to indicate whether the identifier is an IMSI or an S-TMSI. According to other embodiments of the present invention, the identifier of the MTC device may also be other identifiers used to identify the user equipment. According to another preferred embodiment of the present invention, the MTC device may be a coverage-enhanced MTC (CE-MTC) device.

In addition, the base station 300 also includes a paging message processing module 320 . The paging message processing module 320 is configured to append the calculated CRC code to the paging message, and remove at least a part of the identity of the target MTC device from the paging message. According to an embodiment of the present invention, the paging message processing module 320 may remove all of the target MTC device ID from the paging message, and may also remove a part of the target MTC device ID from the paging message.

In addition, the base station 300 further includes a sending module 330 . The sending module 330 is configured to send the paging message. According to a preferred embodiment of the present invention, the base station 300 may further include a channel coding module, which is used to perform channel coding on the paging message before it is sent. According to another preferred embodiment of the present invention, the sending module 330 can determine the number of repeated sendings of the paging message according to the channel environment of the target MTC device, and send the paging message repeatedly.

FIG. 4 shows a structural block diagram of a machine type communication (MTC) device 400 according to the present invention.

As shown in FIG. 4 , the MTC device 400 includes a receiving module 410 . The receiving module 410 is configured to receive paging messages. According to a preferred embodiment of the present invention, the MTC device may be a coverage-enhanced MTC (CE-MTC) device. According to another preferred embodiment of the present invention, the paging message is subjected to channel decoding after reception.

In addition, the MTC device 400 also includes a computing module 420 . The computing module 420 is configured to add at least a part of the identifier of the MTC device to the received paging message, and perform a CRC check on the paging message to which the identifier of the MTC device is added. According to an embodiment of the present invention, the calculation module may only add a part of the MTC device identifier to the received paging message. According to another embodiment of the present invention, the calculation module may also add all of the MTC device identifiers to the received paging message. According to an embodiment of the present invention, the identifier of the MTC device is IMSI or S-TMSI. According to another embodiment of the present invention, 1 bit in the bitmap in the paging message is used to indicate whether the identifier is an IMSI or an S-TMSI. According to other embodiments of the present invention, the identifier of the MTC device may also be other identifiers used to identify the user equipment. According to an embodiment of the present invention, the MTC device 400 may further include a decoding module, configured to perform channel decoding on the paging message after receiving it.

In addition, the MTC device 400 also includes a judging module 430 . The judging module 430 is configured to: if the CRC check passes, the MTC device determines that the paging message is sent to itself; if the CRC check fails, the MTC device discards the paging message.

Fig. 5 shows a flow chart of directly removing all or part of UE-identified simple paging messages for MTC according to an embodiment of the present invention.

As shown in Figure 5, initially there is a bit map representing the information in the paging message, and then the user identification of the target MTC device is added in the paging message; then the CRC check code is added into the paging message; then from the paging message All or part of the user identity of the target MTC device is removed from the paging message; then the paging message is channel coded and finally transmitted.

Fig. 6 shows a flowchart of receiving a paging message by a UE according to an embodiment of the present invention.

As shown in Figure 6, the paging message in the air interface is first demodulated; then through channel decoding processing; then the MTC device adds all or part of its own IMSI (or TMSI) to the decoded information; Then the CRC check is performed on the information to which all or part of the IMSI (or TMSI) is added; if the check is passed, the paging message is determined to be sent to the MTC device; if the check is not passed, the MTC device will The paging message is discarded.

As briefly mentioned above in this specification, in order to support a specific UE coverage enhancement level, the present invention enables each paging message to only include paging information of one UE. In this way, each paging message can be configured with an appropriate number of repetitions according to the channel condition of the corresponding UE, and unnecessary repetitions can be avoided.

Furthermore, to further improve spectral efficiency, the paging message is simplified to reduce the size of the payload. For a paging message with a paging list, only one MTC UE identity is included, that is, each paging message is aimed at a specific MTC UE. In such a scenario, the UE identity in the paging message (can use IMSI/S-TMSI, or can additionally use IMSI and 1 bit to indicate that the paging message is the IMSI in the paging message corresponding to a normal UE in the existing system or S-TMSI) can be transmitted implicitly. In other words, at least part of the UE identity is not actually transmitted in the air interface, it is implied by the CRC check. This can be done in the following manner.

A key idea of the present disclosure is to implicitly transmit at least part of the UE identity using CRC messages. This can be done by simplifying the UE identity in the transmission block in the eNodeB before transmission. There are two options in generating paging messages. One option is to remove all UE identities. This selected simplification of paging messages for low-cost MTC is described below.

Another option is to remove part of the UE identity. In this option, part of the UE identity is removed to reduce the payload size, and other part of the UE identity is still transmitted to ensure reliable transmission. The flowchart depicted in Figure 5 may still apply. However, a more reliable procedure is illustrated in FIG. 6 . For example, if 24 bits of the IMSI are removed, the remaining 8 bits can ensure almost perfect recovery of the IMSI.

Although the UE identity is removed, the CRC itself contains UE identity information. The UE will check the CRC to know if this paging message is intended for itself. When an MTC UE receives a paging message, it first demodulates and decodes the received packets. After that, the MTC UE appends its own identity to the decoded data to recover the complete transmission block, and then checks the CRC. If the CRC check passes, the UE knows that the paging is for itself, otherwise the UE considers it to be a paging message for other UEs. The flowchart of UE reception is illustrated in FIG. 6 .

Next, the performance of the scheme proposed in this disclosure in terms of bits required by each UE and bit error rate will be analyzed.

First, the number of occupied bits per UE of the normal paging message and the number of occupied bits per UE of the paging message proposed in this disclosure will be compared. For convenience of comparison, it is assumed that the IMSI is included in the paging message for all normal UEs. It should be mentioned that more bits are needed if S-TMSI is used to page normal UEs.

For the paging message that relieves m (0<m<17) normal user indications, its total size is 8 bits (MAC header)+m*(2+32) bits (IMSI)+6 bits (other effective Payload) + 24 bits (CRC). Therefore, each UE occupies 34+38/m bits in a conventional paging message. As analyzed before, m=1 or 2 for UE category with 1.4MHz PDSCH. As a result, the paging information for each UE occupies 60-80 bits.

On the other hand, in the paging message proposed by this disclosure, each UE occupies 6 bits (legacy payload; another option is that a bitmap can be used and 6 bits is sufficient) + 24 bits (CRC) + x = 30+x bits, where x is the number of bits in the IMSI that are not omitted. It should be mentioned that a large x results in a larger payload size, but a lower bit error rate.

It can be seen that the proposed scheme of the present disclosure does not increase the payload size. Instead, it reduces the payload size by about 30%-50% for more efficient use of resources.

The following analyzes the present disclosure in terms of bit error rate.

A concern of this disclosure is that the implicit transmission of UE identity may cause adverse effects on reliability. Noting that the UE identity is not transmitted over the air interface, the inventors claim that the UE identity can be considered to always be perfectly received. Note that the IMSI sequence is longer than the CRC sequence, and additional bit error situations only occur when different UE identities generate the same CRC sequence. In other words, the possibility of additional false alarms should be assessed. Since for the direct cancellation scheme a reliable 24-bit CRC is used to inherently contain the UE identity, and considering the rather limited number of low-cost MTC UEs in the same cell, it can be inferred that the false alarm probability is rather low. Furthermore, if x≥8 is set, additional false alarms are almost eliminated, and the payload size of the paging message is 38 bits, which is significantly lower than the average payload.

It can be seen from the above analysis that the possibility of additional false alarms is very small. Therefore, the scheme proposed in this disclosure is satisfactory in terms of transmission reliability.

Based on the solutions proposed in the present disclosure and the corresponding performance analysis, the benefits of the present disclosure are clear. It flexibly supports UE-specific coverage enhancement levels, and unnecessary duplication will not occur. Furthermore, the simplification of the paging message further improves its efficiency.

The present disclosure simplifies paging messages for coverage-enhanced low-cost MTC UEs. The payload size of paging messages is reduced and the coverage enhancement needs of specific UEs are well supported. As a result, spectral efficiency for low-cost MTC UEs is improved.

In contrast, the solution in the prior art does not support the coverage enhancement requirement of a specific UE, and unnecessary repetition of paging messages occurs. Furthermore, the average payload size of paging messages in the prior art is large. The present disclosure reduces the average payload size by 30%-50% and well supports specific UE coverage enhancement needs.

Although the invention has been described with reference to specific examples, these examples are for illustrative purposes only and do not limit the invention. It will be understood by those skilled in the art that various modifications and changes in form and details may be made to these embodiments without departing from the spirit and scope of the invention. The scope of the invention is determined by the appended claims.

Claims (31)

1. in machine type communication (MTC), send a method for beep-page message, it is characterized in that, described method comprises:

Calculate cyclic redundancy check (CRC) (CRC) code of beep-page message, wherein said beep-page message comprises the mark of a target MTC device;

The CRC code calculated is attached in described beep-page message;

The described mark of described target MTC device is removed at least partially from described beep-page message;

Send described beep-page message.

2. method according to claim 1, is characterized in that, from described beep-page message, only removes a part for the mark of target MTC device, and in described beep-page message, retain another part of the mark of target MTC device.

3. method according to claim 1, is characterized in that, removes the whole of the described mark of described target MTC device from described beep-page message.

4. the method according to any one of claim 1-3, is characterized in that, described method comprises further: according to the channel circumstance of described target MTC device, determines the repetition transmission times of described beep-page message, and repeats to send to described beep-page message.

5. the method according to any one of claim 1-3, is characterized in that, described beep-page message carries out chnnel coding before being sent out.

6. the method according to any one of claim 1-3, is characterized in that, the described mark of described MTC device is IMSI or S-TMSI.

7. method according to claim 6, is characterized in that, it is IMSI or S-TMSI that 1 bit in the bit map (bit map) in described beep-page message is used to indicate described mark.

8. the method according to any one of claim 1-3, is characterized in that, described MTC device is MTC (CE-MTC) equipment of coverage enhancement.

9., in a method for the middle paging receiving message of machine type communication (MTC), it is characterized in that, described method comprises:

MTC device paging receiving message;

The mark of self is attached in received beep-page message by described MTC device at least partially;

CRC check is carried out to the beep-page message of the mark of additional described MTC device;

If described CRC check is passed through, then described MTC device determines that described beep-page message issues oneself; If described CRC check is not passed through, then described MTC device abandons described beep-page message.

10. method according to claim 9, is characterized in that, a part for self identification is only attached in received beep-page message by described MTC device.

11. methods according to claim 9, is characterized in that, the whole of self identification are attached in received beep-page message by described MTC device.

12. methods according to any one of claim 9-11, it is characterized in that, described beep-page message carries out channel-decoding after the receipt.

13. methods according to any one of claim 9-11, it is characterized in that, the described mark of described MTC device is IMSI or S-TMSI.

14. methods according to claim 13, is characterized in that, it is IMSI or S-TMSI that 1 bit in the bit map (bit map) in described beep-page message is used to indicate described mark.

15. methods according to any one of claim 9-11, it is characterized in that, described MTC device is MTC (CE-MTC) equipment of coverage enhancement.

16. 1 kinds of base stations, is characterized in that, described base station comprises:

Computing module, be configured to cyclic redundancy check (CRC) (CRC) code calculating beep-page message, wherein said beep-page message comprises the mark of target machine type communication (MTC) equipment;

Beep-page message processing module, is configured to the CRC code calculated to be attached in described beep-page message, and the described mark removing described target MTC device from described beep-page message at least partially;

Sending module, is configured to send described beep-page message.

17. base stations according to claim 16, it is characterized in that, described beep-page message processing module is configured to a part for the mark only removing target MTC device from described beep-page message further, and in described beep-page message, retain another part of the mark of target MTC device.

18. base stations according to claim 16, is characterized in that, described beep-page message processing module is configured to the whole of the mark removing target MTC device from described beep-page message further.

19. base stations according to any one of claim 16-18, it is characterized in that, described sending module is configured to the channel circumstance according to described target MTC device further, determines the repetition transmission times of described beep-page message, and repeats to send to described beep-page message.

20. base stations according to any one of claim 16-18, it is characterized in that, described base station also comprises: channel coding module, is configured to carry out chnnel coding to it before beep-page message is sent out.

21. base stations according to any one of claim 16-18, it is characterized in that, the described mark of described MTC device is IMSI or S-TMSI.

22. base stations according to claim 21, is characterized in that, it is IMSI or S-TMSI that 1 bit in the bit map (bit map) in described beep-page message is used to indicate described mark.

23. base stations according to any one of claim 16-18, it is characterized in that, described MTC device is MTC (CE-MTC) equipment of coverage enhancement.

24. 1 kinds of machine type communication (MTC) equipment, it is characterized in that, described MTC device comprises:

Receiver module, is configured to paging receiving message;

Computing module, is configured to being attached to the mark of described MTC device at least partially in received beep-page message, and carries out CRC check to the beep-page message of the mark of additional described MTC device;

Judge module, is configured to: if described CRC check is passed through, then described MTC device determines that described beep-page message issues oneself; If described CRC check is not passed through, then described MTC device abandons described beep-page message.

25. MTC device according to claim 24, is characterized in that, described computing module is configured to only a part for the mark of described MTC device be attached in received beep-page message.

26. MTC device according to claim 24, is characterized in that, described computing module is configured to the whole of the mark of described MTC device to be attached in received beep-page message.

27. MTC device according to any one of claim 24-26, is characterized in that, also comprise channel decoding module, are configured to carry out channel-decoding to it after the described beep-page message of reception.

28. MTC device according to any one of claim 24-26, it is characterized in that, the described mark of described MTC device is IMSI or S-TMSI.

29. base stations according to claim 28, is characterized in that, it is IMSI or S-TMSI that 1 bit in the bit map (bit map) in described beep-page message is used to indicate described mark.

30. MTC device according to any one of claim 24-26, it is characterized in that, described MTC device is MTC (CE-MTC) equipment of coverage enhancement.

31. 1 kinds of communication systems, is characterized in that, described system comprises:

Base station according to claim 16-23; And

MTC device according to claim 24-30.