CN107819557B - Transmission processing method, network side equipment and mobile communication terminal - Google Patents
Transmission processing method, network side equipment and mobile communication terminal Download PDFInfo
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- CN107819557B CN107819557B CN201610821534.XA CN201610821534A CN107819557B CN 107819557 B CN107819557 B CN 107819557B CN 201610821534 A CN201610821534 A CN 201610821534A CN 107819557 B CN107819557 B CN 107819557B
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Abstract
The invention provides a transmission processing method, network side equipment and a mobile communication terminal, which realize flexible configuration of demodulation reference signals when an uplink pilot frequency time slot is used for transmitting a service channel. When the transmission processing method is used on a network side, the method comprises the following steps: acquiring a demodulation reference signal transmitted by a mobile communication terminal through a demodulation reference signal transmission resource; the demodulation reference signal transmission resource is positioned in an uplink pilot frequency time slot of a special subframe and/or an uplink subframe behind the uplink pilot frequency time slot; and demodulating a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by using the acquired demodulation reference signal. The invention realizes flexible configuration of demodulation reference signals when the uplink pilot frequency time slot is used for transmitting the service channel.
Description
Technical Field
The present invention relates to the field of mobile communication technologies, and in particular, to a transmission processing method, a network side device, and a mobile communication terminal.
Background
In the existing LTE system, subframes are divided into three categories: the subframe comprises a Downlink subframe, an Uplink subframe and special subframes, wherein each special subframe comprises a Downlink transmission Time Slot (DwPTS, Downlink Pilot Time Slot), an Uplink and Downlink Guard interval (GP, Guard Period) and an Uplink transmission Time Slot (UpPTS, Uplink Pilot Time Slot). And the uplink pilot timeslot occupies at most 2 SC-FDMA symbols, so that uplink service data is not transmitted in the UpPTS, and only a Physical Random Access Channel (PRACH) and an uplink Sounding Reference Signal (SRS) are transmitted.
When DwPTS is introduced in a special time slot: GP: after the UpPTS is a mixture ratio of 6:2:6, the UpPTS occupying 6 SC-FDMA symbols can transmit a traffic channel, and if the traffic channel is PUSCH, a corresponding Demodulation Reference Signal (DMRS) for channel estimation of uplink correlation detection needs to be designed.
In the prior art, when a conventional Cyclic Prefix (CP) is used, a DMRS for PUSCH demodulation is located at a 4 th Single-carrier Frequency-Division Multiple Access (SC-FDMA) symbol of each uplink slot, and in each subframe, there are two symbols for transmission of the DMRS, one for each slot, as shown in fig. 1. And for extended CP, DMRS is located on the 3 rd SC-FDMA symbol of each slot.
Considering that the UpPTS is located at a position corresponding to the 2 nd timeslot in the time domain of the special subframe, in the prior art, the DMRS configuration of the 2 nd Slot in each subframe is introduced into the UpPTS.
However, the DMRS configuration directly introduced into the 2 nd Slot of the existing normal uplink subframe has the disadvantage of too large overhead caused by configuration solidification, and the effect of UpPTS for enhancing uplink data transmission capability is weakened.
Disclosure of Invention
The embodiment of the invention aims to provide a transmission processing method, network side equipment and a mobile communication terminal, which can realize flexible configuration of DMRS when a UpPTS is used for transmitting a service channel.
In order to achieve the above object, an embodiment of the present invention provides a transmission processing method, used in a network side, including:
acquiring a demodulation reference signal transmitted by a mobile communication terminal through a demodulation reference signal transmission resource; the demodulation reference signal transmission resource is positioned in an uplink pilot frequency time slot of a special subframe and/or an uplink subframe behind the uplink pilot frequency time slot;
and demodulating a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by using the acquired demodulation reference signal.
In order to achieve the above object, an embodiment of the present invention further provides a transmission processing method, used in a mobile communication terminal, including:
determining a demodulation reference signal corresponding to a service data channel transmitted through an uplink pilot time slot;
transmitting the demodulation reference signal to a network side through a demodulation reference signal transmission resource, wherein the demodulation reference signal is used for demodulating a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by the network side; the demodulation reference signal transmission resource is positioned in an uplink pilot time slot of a special subframe and/or an uplink subframe after the uplink pilot time slot.
In order to achieve the above object, an embodiment of the present invention further provides a network side device, including:
the signal acquisition module is used for acquiring a demodulation reference signal transmitted by the mobile communication terminal through a demodulation reference signal transmission resource; the demodulation reference signal transmission resource is positioned in an uplink pilot frequency time slot of a special subframe and/or an uplink subframe behind the uplink pilot frequency time slot;
and the demodulation module is used for demodulating a service data channel transmitted by the mobile communication terminal through the uplink pilot time slot by using the acquired demodulation reference signal.
In order to achieve the above object, an embodiment of the present invention further provides a mobile communication terminal, including:
a first determining module, configured to determine a demodulation reference signal corresponding to a traffic data channel transmitted through an uplink pilot timeslot;
a third transmission module, configured to transmit the demodulation reference signal to a network side through a demodulation reference signal transmission resource, where the demodulation reference signal is used by the network side to demodulate a service data channel transmitted by the mobile communication terminal through the uplink pilot timeslot; the demodulation reference signal transmission resource is positioned in an uplink pilot time slot of a special subframe and/or an uplink subframe after the uplink pilot time slot.
Compared with the prior art, in the specific embodiment of the present invention, the demodulation reference signal for demodulating the service data channel transmitted by the mobile communication terminal through the uplink pilot time slot is not fixedly transmitted through the uplink pilot time slot, but can be transmitted through the following three ways:
1. transmitting through UpPTS alone;
2. transmitting through uplink subframes individually;
3. and jointly transmitting the uplink subframe and the UpPTS.
Therefore, compared with the prior art, the transmission processing method provided by the embodiment of the invention can select the position of the resource for transmitting the DMRS according to the requirement, so that the flexibility of DMRS transmission is improved.
Drawings
Fig. 1 shows a schematic diagram of DMRS distribution in PUSCH;
fig. 2 is a flow chart illustrating a transmission processing method according to a first embodiment of the present invention;
fig. 3 is a flow chart illustrating another transmission processing method according to the first embodiment of the present invention;
fig. 4 is a flowchart illustrating a transmission processing method according to a first embodiment of the present invention;
fig. 5 is a schematic time domain position diagram of a DMRS when UpPTS and a subsequent uplink subframe are jointly scheduled in the transmission processing method according to the first embodiment of the present invention;
fig. 6 is a schematic diagram illustrating another time domain position of a DMRS when a UpPTS and a subsequent uplink subframe are jointly scheduled in the transmission processing method according to the first embodiment of the present invention;
fig. 7 is a schematic time domain position diagram of a DMRS when UpPTS is independently scheduled in the transmission processing method according to the first embodiment of the present invention;
fig. 8 is a schematic diagram illustrating another time domain position of a DMRS when UpPTS is independently scheduled in the transmission processing method according to the first embodiment of the present invention;
fig. 9 is a flowchart illustrating a transmission processing method according to a second embodiment of the present invention;
fig. 10 is a flow chart illustrating another transmission processing method according to a second embodiment of the present invention;
fig. 11 is a flowchart illustrating a transmission processing method according to a second embodiment of the present invention;
fig. 12 is a schematic structural diagram of a network-side device according to a third embodiment of the present invention;
fig. 13 is a schematic structural diagram of another network-side device according to a third embodiment of the present invention;
fig. 14 is a schematic structural diagram of a network-side device according to a third embodiment of the present invention;
fig. 15 is a schematic structural diagram of a mobile communication device according to a fourth embodiment of the present invention;
fig. 16 is a schematic structural diagram of another mobile communication device according to a fourth embodiment of the present invention;
fig. 17 is a schematic structural diagram of another mobile communication device according to a fourth embodiment of the present invention.
Detailed Description
In the embodiment of the invention, when the UpPTS is used for transmitting the service channel, the DMRS corresponding to the service channel transmitted by the UpPTS can be transmitted through the UpPTS or the uplink subframe independently, and can also be transmitted jointly through the UpPTS and the uplink subframe, and the network side and the mobile communication terminal can be selected according to requirements, so that the transmission flexibility of the DMRS is improved.
A transmission processing method according to a first embodiment of the present invention is applied to a network side, and as shown in fig. 2, includes:
Compared with the prior art, in the specific embodiment of the present invention, the demodulation reference signal for demodulating the service data channel transmitted by the mobile communication terminal through the uplink pilot time slot is not fixedly transmitted through the uplink pilot time slot, but can be transmitted through the following three ways:
1. transmitting through UpPTS alone;
2. transmitting through uplink subframes individually;
3. and jointly transmitting the uplink subframe and the UpPTS.
Therefore, compared with the prior art, the transmission processing method provided by the embodiment of the invention can select the position of the resource for transmitting the DMRS according to the requirement, so that the flexibility of DMRS transmission is improved.
In the first embodiment of the present invention, a network side may obtain a demodulation reference signal transmitted by a mobile communication terminal through a demodulation reference signal transmission resource, and the demodulation reference signal is not transmitted through a UpPTS any more, where the demodulation reference signal transmission resource may be a UpPTS located in a special subframe, an uplink subframe located after an uplink pilot time slot, or both the UpPTS and the uplink subframe, and how to determine the demodulation reference signal transmission resource specifically is located in the UpPTS of the special subframe, the uplink subframe after the uplink pilot time slot, or both the UpPTS and the uplink subframe may be determined in various ways, which is described below.
< first mode >
In the first mode, the network side and the mobile communication terminal determine the position of the demodulation reference signal transmission resource according to the same predetermined criterion, that is, determine whether the demodulation reference signal transmission resource is located in the UpPTS of the special subframe, the uplink subframe after the uplink pilot time slot, or both the UpPTS and the uplink subframe according to the same predetermined criterion.
This is exemplified as follows.
If the network side and the mobile communication terminal determine the position of the demodulation reference signal transmission resource according to whether the mobile communication terminal supports the transmission of the demodulation reference signal in the UpPTS or not, when the mobile communication terminal supports the transmission of the demodulation reference signal in the UpPTS, the demodulation reference signal transmission resource is defaulted by both sides to be positioned in the UpPTS of the special subframe or positioned in the UpPTS and the uplink subframe, otherwise, the demodulation reference signal transmission resource is positioned in the uplink subframe.
The above is merely an example of one criterion, and the first embodiment of the present invention does not limit a specific criterion as long as both sides determine the position of the demodulation reference signal transmission resource according to the same criterion.
< second mode >
In the second embodiment, the mobile communication terminal determines the location of the demodulation reference signal transmission resource according to the instruction from the network side, which is described as follows.
In a second mode, as shown in fig. 3, the transmission processing method according to the first embodiment of the present invention further includes, before step 201:
and transmitting first indication information to the mobile communication terminal, wherein the first indication information indicates that the demodulation reference signal transmission resource is positioned in the uplink pilot time slot and/or an uplink subframe after the uplink pilot time slot.
After receiving the first indication information, the mobile communication terminal may determine, according to the first indication information, whether the demodulation reference signal transmission resource is located in the UpPTS of the special subframe, or in the uplink subframe after the uplink pilot timeslot, or in both the UpPTS and the uplink subframe, and transmit the demodulation reference signal according to the determined demodulation reference signal transmission resource.
In the first embodiment of the present invention, when the first indication information indicates that the demodulation reference signal transmission resource includes a transmission resource in the uplink pilot timeslot, the network side and the mobile communication terminal may determine a specific time domain position of the demodulation reference signal transmission resource in the uplink timeslot according to a preset criterion, but in order to improve flexibility of the demodulation reference signal transmission resource configuration, the network side may indicate the specific time domain position of the demodulation reference signal transmission resource in the uplink timeslot, that is, as shown in fig. 4, the transmission processing method according to the first embodiment of the present invention further includes:
In the first embodiment of the present invention, in the time domain, the demodulation reference signal transmission resource located in the uplink pilot time slot is any one symbol in the uplink pilot time slot.
For example, the uplink pilot slot includes 6 SC-FDMA symbols, and the demodulation reference signal transmission resource located in the uplink pilot slot may be a 1 st SC-FDMA symbol, a 2 nd SC-FDMA symbol, a 3 rd SC-FDMA symbol, a 4 th SC-FDMA symbol, a 5 th SC-FDMA symbol, or a 6 th SC-FDMA symbol.
In the first embodiment of the present invention, the first indication information and the second indication information may be transmitted to the mobile communication terminal through a higher layer signaling and/or a real-time control signaling, and the first indication information is taken as an example and described below.
Mode 1: configuration by higher layer signaling
Firstly, a terminal reports terminal capability, wherein the terminal capability comprises the capability of whether the terminal supports transmitting a demodulation reference signal on a UpPTS;
when the base station learns the capability of the terminal supporting the transmission of the demodulation reference signal on the UpPTS, whether the demodulation reference signal is transmitted on the UpPTS is configured for the terminal by a high-level signaling.
If the high-level signaling configures a transmission mode for the terminal to transmit the demodulation reference signal on the UpPTS, the terminal directly transmits the demodulation reference signal on the UpPTS according to the high-level signaling.
This way, the downlink control information DCI for uplink scheduling in the downlink subframe does not need to be changed.
Mode 2: dynamic control information configuration by physical layer
Firstly, a terminal reports terminal capability, wherein the terminal capability comprises the capability of whether the terminal supports transmitting a demodulation reference signal on a UpPTS;
after learning the capability of the terminal supporting the transmission of the demodulation reference signal on the UpPTS, the base station adds a scheduling indication information bit (which may be newly added or may utilize a previous reserved field) in the downlink physical layer Dynamic Control Information (DCI) to indicate whether the demodulation reference signal transmission resource is located in the UpPTS of the special subframe, or in the uplink subframe after the uplink pilot timeslot, or in both the UpPTS and the uplink subframe.
For example, two scheduling indication bits are added to the UL grant, and if the bit is 00, it is identified that the current demodulation reference signal transmission resource is located in the UpPTS of the special subframe; if the bit is 01, identifying that the demodulation reference signal transmission resource is located in the UpPTS and the uplink subframe of the special subframe; if the bit is 10, it is identified that the demodulation reference signal transmission resource is located in the uplink subframe.
The network side adopts the downlink physical layer dynamic control information containing the scheduling indication information to indicate the terminal supporting the capability; for the terminal which does not support the above capability, the base station may adopt the downlink physical layer dynamic control information designed in the existing protocol to perform scheduling.
And at the terminal side, for the terminal supporting the capability, detecting the downlink physical layer dynamic control information containing the scheduling indication, and determining the position of the demodulation reference signal transmission resource according to the value of the bit of the scheduling indication.
Mode 3: jointly configured by high-layer signaling and physical layer dynamic control information
Firstly, a terminal reports terminal capability, wherein the terminal capability comprises the capability of whether the terminal supports transmitting a demodulation reference signal on a UpPTS;
after learning the capability of the terminal supporting the transmission of the demodulation reference signal on the UpPTS, the base station adds a scheduling indication information bit (which may be newly added or may utilize a previous reserved field) in the downlink physical layer Dynamic Control Information (DCI) to indicate whether the demodulation reference signal transmission resource is located in the UpPTS of the special subframe, or in the uplink subframe after the uplink pilot timeslot, or in both the UpPTS and the uplink subframe.
For example, two scheduling indication bits are added to the UL grant, and if the bit is 00, it is identified that the current demodulation reference signal transmission resource is located in the UpPTS of the special subframe; if the bit is 01, identifying that the demodulation reference signal transmission resource is located in the UpPTS and the uplink subframe of the special subframe; if the bit is 10, it is identified that the demodulation reference signal transmission resource is located in the uplink subframe.
When the base station learns the capability of the terminal supporting the transmission of the demodulation reference signal on the UpPTS, whether the demodulation reference signal is transmitted on the UpPTS is configured for the terminal by a high-level signaling.
And at the terminal side, for the terminal supporting the above capability, if the demodulation reference signal has been transmitted on the UpPTS by the high layer signaling configuration, further detecting the above downlink physical layer dynamic control information including the scheduling indication, and determining the specific position for transmitting the demodulation reference signal according to the value of the scheduling indication bit.
And for the demodulation reference signal which does not support the capability or is configured by a high-level signaling and is not transmitted on the UpPTS, scheduling transmission is carried out by adopting the downlink physical layer dynamic control information designed in the existing protocol.
In the specific embodiment of the present invention, the demodulation reference signal transmission resource may be a UpPTS located in a special subframe, may be located in an uplink subframe after an uplink pilot timeslot, and may also be located in both the UpPTS and the uplink subframe, but specifically, what manner is used to transmit the demodulation reference signal may be determined according to various parameters, and one manner of which is described below.
Considering that different mobile communication terminals are in different channel environments, if the channel time-varying experienced by some mobile communication terminals is strong, the channel where the UpPTS is transmitted and the channel where the next adjacent uplink subframe is transmitted are changed greatly, and at this time, if the channel estimation of PUSCH demodulation in the UpPTS is performed by simply using DMRSs of the next adjacent uplink subframe, the channel change experienced by the two terminals is large, which may cause a loss of demodulation performance. In this way, in the specific embodiment of the present invention, DMRS may be introduced into UpPTS.
On the contrary, when the variation between the channel where the UpPTS is transmitted and the channel where the subsequent adjacent uplink subframe is transmitted is small, relatively accurate channel estimation can be performed on the demodulation of the PUSCH in the UpPTS by simply using the DMRS of the subsequent adjacent uplink subframe, and at this time, introducing the DMRS into the UpPTS increases unnecessary overhead and weakens the capability of the UpPTS in enhancing uplink data transmission. Therefore, when the channel time-varying characteristic of the mobile communication terminal is small, the DMRS is directly transmitted in the uplink subframe in the first embodiment of the present invention.
Similarly, when the moving speed is high, a large variation may occur between a channel where the UpPTS is transmitted and a channel where an adjacent uplink subframe is transmitted later.
Also, for example, when the signal-to-noise ratio is low, a channel where the UpPTS is transmitted and a channel where an adjacent uplink subframe is transmitted later may also be largely changed, and usually, when the signal-to-noise ratio is low, the insertion of the pilot signal is also favorable for improving the channel estimation performance, thereby improving the system performance, and therefore, the above scheme for determining the position of the DMRS is also applicable.
That is, in the first embodiment of the present invention, it is determined whether the demodulation reference signal transmission resource includes at least the transmission resource in the uplink pilot timeslot or only the transmission resource in the uplink subframe according to a comparison result between a position determination parameter and a predetermined threshold, where the position determination parameter is a channel time varying characteristic, a moving speed, or a signal-to-noise ratio of the mobile communication terminal.
In the embodiment of the invention, a service data channel is transmitted in the UpPTS, and the scheduling modes of the UpPTS are divided into two types:
1. the UpPTS and the subsequent uplink subframe are jointly scheduled;
2. the UpPTS is scheduled separately.
The different scheduling manners of UpPTS may be different, and the demodulation reference signal transmission resources in the first embodiment of the present invention may be different, which are described below.
When the uplink pilot time slot and the uplink subframe are jointly scheduled, as shown in fig. 5, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or as shown in fig. 6, the demodulation reference signal transmission resource is indicated as a transmission resource in the uplink pilot time slot and a transmission resource in the uplink subframe.
When the UpPTS is scheduled with the subsequent adjacent uplink subframe, Single User Multiple-Input Multiple-Output (SU-MIMO) transmission and multi-User Multiple-Input Multiple-Output (MU-MIMO) transmission can be performed. As shown in fig. 6, when there is no DMRS transmission in UpPTS, orthogonality of SU-MIMO and MU-MIMO transmissions is orthogonally multiplexed by existing cyclic shift and OCC.
This is briefly described as follows.
For SU-MIMO, such as Layer 4, it can be applied to Layer0, 1, 2, 3 by using cyclic shifts 0, 6, 3, 9 of the base sequence. In another example, the DMRSs of the respective layers can be further distinguished by introducing an Orthogonal Code (OCC) between the DMRSs of the two slots. The value of OCC is [ 11 ] and [1-1], and when the cyclic shifts used by the two layers are close, the OCC can be used in a superposition mode to ensure the orthogonality between the layers.
And different OCC codes can be allocated to different UEs during uplink MU-MIMO transmission, and when the bandwidths of two users performing MU-MIMO transmission are different, orthogonality between demodulation reference signals can be achieved by using OCC. In the existing protocol, the OCC code of each Layer is obtained through a 3-bit Cyclic Shift Field in the uplink scheduling grant of the PDCCH, and the Cyclic Shift Field is used to indicate the Cyclic Shift used by the DMRS, the Cyclic Shift of the DMRS of each Layer, and the OCC at the same time, so as to reduce the control signaling overhead.
As shown in fig. 5, when DMRS is transmitted in UpPTS, on one hand, two independent coding blocks may be used for UpPTS and PUSCH of an adjacent uplink subframe behind the UpPTS, and then the DMRS in UpPTS and the DMRS in the adjacent uplink subframe are Orthogonal to each other and are distinguished according to an existing cyclic shift and Orthogonal Code (OCC), while the UpPTS is distinguished by cyclic shift; and on the other hand, DMRSs of different layers and different mobile communication terminals can be distinguished using an orthogonal sequence having a length of 3.
When the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot timeslot and a transmission resource in the uplink subframe, the demodulating, by using the obtained demodulation reference signal, a service data channel transmitted by the mobile communication terminal through the uplink pilot timeslot specifically includes:
performing channel estimation by combining a first demodulation reference signal transmitted by transmission resources in the uplink pilot time slot and a second demodulation reference signal transmitted by the transmission resources in the uplink subframe;
and demodulating the service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by using the channel estimation result.
When the uplink pilot time slot is separately scheduled, as shown in fig. 7, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; wherein the differently padded DMRSs correspond to DMRSs of different mobile communication terminals. Or as shown in fig. 8, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink subframe.
As shown in fig. 8, in the uplink subframe, at the same time domain position, DMRSs corresponding to different mobile communication terminals are multiplexed on the same time domain symbol. At this time, in order to avoid interference of user data and pilot transmitted in a normal uplink subframe adjacent to the network side, the network side may configure different DMRSs in two subframes at the same frequency domain position in an MU-MIMO manner. Different from normal MU-MIMO, the pilot and data of MU-MIMO are both multiplexed on the same time-frequency resource, i.e. the pilot and data are located in uplink subframes at the same time, but in the specific embodiment of the present invention, DMRS is multiplexed on the same time-frequency resource, and data portions are transmitted in UpPTS and adjacent normal uplink subframes, respectively.
In the embodiment of the present invention, the demodulation reference signal transmission resource may be located in the UpPTS of the special subframe, may also be located in the uplink subframe after the uplink pilot timeslot, and may also be located in both the UpPTS and the uplink subframe, but the configuration of the demodulation reference signal is determined directly according to the cyclic shift configuration of the DMRS in the existing uplink scheduling authorization control information, as long as it satisfies the orthogonality of different layers of the DMRSs of the same user and the orthogonality of the DMRSs of different users, and the design of the specific DMRSs does not belong to the scope of the discussion of the embodiment of the present invention, and is not described in detail herein.
A transmission processing method according to a second embodiment of the present invention is applied to a mobile communication terminal, and as shown in fig. 9, includes:
Compared with the prior art, in the specific embodiment of the present invention, the demodulation reference signal for demodulating the service data channel transmitted by the mobile communication terminal through the uplink pilot time slot is not fixedly transmitted through the uplink pilot time slot, but can be transmitted through the following three ways:
1. transmitting through UpPTS alone;
2. transmitting through uplink subframes individually;
3. and jointly transmitting the uplink subframe and the UpPTS.
Therefore, compared with the prior art, the transmission processing method provided by the embodiment of the invention can select the position of the resource for transmitting the DMRS according to the requirement, so that the flexibility of DMRS transmission is improved.
In the second embodiment of the present invention, a mobile communication terminal transmits a demodulation reference signal transmitted by a demodulation reference signal transmission resource, and the demodulation reference signal is not fixedly transmitted by a UpPTS any more, but may be located in a UpPTS of a special subframe, an uplink subframe after an uplink pilot timeslot, or both of the UpPTS and the uplink subframe, and how to specifically determine that the demodulation reference signal transmission resource is located in the UpPTS of the special subframe, the uplink subframe after the uplink pilot timeslot, or both of the UpPTS and the uplink subframe by the mobile communication terminal may be determined in various ways, which is described below.
< first mode >
In the first mode, the network side and the mobile communication terminal determine the position of the demodulation reference signal transmission resource according to the same predetermined criterion, that is, determine whether the demodulation reference signal transmission resource is located in the UpPTS of the special subframe, the uplink subframe after the uplink pilot time slot, or both the UpPTS and the uplink subframe according to the same predetermined criterion.
This is exemplified as follows.
If the network side and the mobile communication terminal support the transmission of the demodulation reference signal in the UpPTS according to whether the mobile communication terminal supports the transmission of the demodulation reference signal in the UpPTS, the default demodulation reference signal transmission resources of the network side and the mobile communication terminal are located in the UpPTS of the special subframe or in the UpPTS and the uplink subframe, otherwise, the default demodulation reference signal transmission resources are located in the uplink subframe.
The above is merely an example of one criterion, and the first embodiment of the present invention does not limit a specific criterion as long as both sides determine the position of the demodulation reference signal transmission resource according to the same criterion.
< second mode >
In the second embodiment, the mobile communication terminal determines the location of the demodulation reference signal transmission resource according to the instruction from the network side, which is described as follows.
In a second embodiment, as shown in fig. 10, the transmission processing method according to the second embodiment of the present invention further includes, before step 901:
After receiving the first indication information, the mobile communication terminal may determine, according to the first indication information, whether the demodulation reference signal transmission resource is located in the UpPTS of the special subframe, or in the uplink subframe after the uplink pilot timeslot, or in both the UpPTS and the uplink subframe, and transmit the demodulation reference signal according to the determined demodulation reference signal transmission resource.
In the second embodiment of the present invention, when the first indication information indicates that the demodulation reference signal transmission resource includes a transmission resource in the uplink pilot timeslot, the network side and the mobile communication terminal may determine a specific time domain position of the demodulation reference signal transmission resource in the uplink timeslot according to a preset criterion, that is:
when the first indication information indicates that the demodulation reference signal transmission resources comprise transmission resources in the uplink pilot time slot, determining the position of the demodulation reference signal transmission resources in the uplink pilot time slot on the time domain according to a predefined criterion.
If the network side and the mobile communication terminal define in advance that the position of the demodulation reference signal transmission resource in the uplink pilot time slot in the time domain is the first SC-FDMA symbol as long as the demodulation reference signal transmission resource includes the transmission resource in the uplink pilot time slot;
for another example, the network side and the mobile communication terminal predefine that, as long as the demodulation reference signal transmission resource includes a transmission resource in the uplink pilot time slot, the position of the demodulation reference signal transmission resource in the uplink pilot time slot on the time domain is a second SC-FDMA symbol;
……
the network side and the mobile communication terminal predefine that the position of the demodulation reference signal transmission resource in the uplink pilot time slot on the time domain is the sixth SC-FDMA symbol as long as the demodulation reference signal transmission resource comprises the transmission resource in the uplink pilot time slot.
However, in order to improve the flexibility of the demodulation reference signal transmission resource configuration, the network side may indicate a specific time domain position of the demodulation reference signal transmission resource in the uplink timeslot, that is, as shown in fig. 11, the transmission processing method according to the second embodiment of the present invention further includes:
In the time domain, the demodulation reference signal transmission resource located in the uplink pilot time slot is any one symbol in the uplink pilot time slot.
And the first indication information and the second indication information are transmitted to the mobile communication terminal through high-layer signaling and/or real-time control signaling.
Considering that different mobile communication terminals are in different channel environments, if the channel time-varying experienced by some mobile communication terminals is strong, the channel where the UpPTS is transmitted and the channel where the next adjacent uplink subframe is transmitted are changed greatly, and at this time, if the channel estimation of PUSCH demodulation in the UpPTS is performed by simply using DMRSs of the next adjacent uplink subframe, the channel change experienced by the two terminals is large, which may cause a loss of demodulation performance. In this way, in the specific embodiment of the present invention, DMRS may be introduced into UpPTS.
On the contrary, when the variation between the channel where the UpPTS is transmitted and the channel where the subsequent adjacent uplink subframe is transmitted is small, relatively accurate channel estimation can be performed on the demodulation of the PUSCH in the UpPTS by simply using the DMRS of the subsequent adjacent uplink subframe, and at this time, introducing the DMRS into the UpPTS increases unnecessary overhead and weakens the capability of the UpPTS in enhancing uplink data transmission. Therefore, when the channel time-varying characteristic of the mobile communication terminal is small, the DMRS is directly transmitted in the uplink subframe in the first embodiment of the present invention.
That is, it is determined whether the demodulation reference signal transmission resource includes at least a transmission resource in the uplink pilot timeslot or only a transmission resource in the uplink subframe according to a comparison result of a position determination parameter with a predetermined threshold, where the position determination parameter is a channel time-varying characteristic, a moving speed, or a signal-to-noise ratio of the mobile communication terminal.
In the embodiment of the invention, a service data channel is transmitted in the UpPTS, and the scheduling modes of the UpPTS are divided into two types:
3. the UpPTS and the subsequent uplink subframe are jointly scheduled;
4. the UpPTS is scheduled separately.
The different scheduling manners of UpPTS may be different, and the demodulation reference signal transmission resources in the first embodiment of the present invention may be different, which are described below.
When the uplink pilot time slot and the uplink subframe are jointly scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink pilot time slot and the transmission resource in the uplink subframe.
The indicating information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot timeslot and a transmission resource in the uplink subframe, and the transmitting the demodulation reference signal to the network side through the demodulation reference signal transmission resource specifically includes:
respectively transmitting a first demodulation reference signal and a second demodulation reference signal to the network side through the transmission resources in the uplink pilot time slot and the transmission resources in the uplink subframe; the first demodulation reference signal and the second demodulation reference signal are used for joint channel estimation at the network side, and a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot is demodulated by using a channel estimation result.
When the uplink pilot time slot is separately scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink subframe.
The third embodiment of the present invention further provides a network side device, as shown in fig. 12, including:
the signal acquisition module is used for acquiring a demodulation reference signal transmitted by the mobile communication terminal through a demodulation reference signal transmission resource; the demodulation reference signal transmission resource is positioned in an uplink pilot frequency time slot of a special subframe and/or an uplink subframe behind the uplink pilot frequency time slot;
and the demodulation module is used for demodulating a service data channel transmitted by the mobile communication terminal through the uplink pilot time slot by using the acquired demodulation reference signal.
As shown in fig. 13, the network-side device further includes:
a first transmission module, configured to transmit first indication information to the mobile communication terminal, indicating that the demodulation reference signal transmission resource is located in the uplink pilot timeslot and/or an uplink subframe after the uplink pilot timeslot.
As shown in fig. 14, the network-side device further includes:
a second transmission module, configured to transmit second indication information to the mobile communication terminal when the first indication information indicates that the demodulation reference signal transmission resource includes a transmission resource in the uplink pilot timeslot, and indicate a position of the demodulation reference signal transmission resource located in the uplink pilot timeslot on a time domain.
In the time domain, the demodulation reference signal transmission resource located in the uplink pilot time slot is any one symbol in the uplink pilot time slot.
In the foregoing network-side device, the first indication information and the second indication information are transmitted to the mobile communication terminal through a higher layer signaling and/or a real-time control signaling.
In the above network side device, it is determined whether the demodulation reference signal transmission resource at least includes a transmission resource in the uplink pilot timeslot or only includes a transmission resource in the uplink subframe according to a comparison result between a position determination parameter and a predetermined threshold, where the position determination parameter is a channel time varying characteristic, a moving speed, or a signal-to-noise ratio of the mobile communication terminal.
In the above network side device, when the uplink pilot time slot and the uplink subframe are jointly scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink pilot time slot and the transmission resource in the uplink subframe.
In the foregoing network side device, where the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot timeslot and a transmission resource in the uplink subframe, the demodulation module specifically includes:
a channel estimation unit, configured to perform channel estimation by combining a first demodulation reference signal transmitted by a transmission resource in the uplink pilot timeslot and a second demodulation reference signal transmitted by a transmission resource in the uplink subframe;
and the demodulation unit is used for demodulating the service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by using the channel estimation result.
In the above network side device, when the uplink pilot time slot is separately scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink subframe.
The fourth embodiment of the present invention also provides a mobile communication terminal, as shown in fig. 15, including:
a first determining module, configured to determine a demodulation reference signal corresponding to a traffic data channel transmitted through an uplink pilot timeslot;
a third transmission module, configured to transmit the demodulation reference signal to a network side through a demodulation reference signal transmission resource, where the demodulation reference signal is used by the network side to demodulate a service data channel transmitted by the mobile communication terminal through the uplink pilot timeslot; the demodulation reference signal transmission resource is positioned in an uplink pilot time slot of a special subframe and/or an uplink subframe after the uplink pilot time slot.
As shown in fig. 16, the mobile communication terminal further includes:
the first receiving module is used for receiving first indication information transmitted by a network side;
a second determining module, configured to determine, according to the first indication information, that the demodulation reference signal transmission resource is located in the uplink pilot timeslot and/or an uplink subframe after the uplink pilot timeslot.
As shown in fig. 17, the mobile communication terminal further includes:
a second receiving module, configured to receive second indication information transmitted by the network side when the first indication information indicates that the demodulation reference signal transmission resource includes a transmission resource in the uplink pilot timeslot;
a third determining module, configured to determine, according to the second indication information, a position of the demodulation reference signal transmission resource located in the uplink pilot timeslot in a time domain.
In the above mobile communication terminal, in the time domain, the demodulation reference signal transmission resource located in the uplink pilot time slot is any one symbol in the uplink pilot time slot.
In the above mobile communication terminal, the first indication information and the second indication information are transmitted to the mobile communication terminal through a high layer signaling and/or a real-time control signaling.
In the above mobile communication terminal, it is determined whether the demodulation reference signal transmission resource at least includes a transmission resource in the uplink pilot timeslot or only includes a transmission resource in the uplink subframe according to a comparison result between a position determination parameter and a predetermined threshold, where the position determination parameter is a channel time varying characteristic, a moving speed, or a signal-to-noise ratio of the mobile communication terminal.
In the above mobile communication terminal, when the uplink pilot time slot and the uplink subframe are jointly scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink pilot time slot and the transmission resource in the uplink subframe.
In the above mobile communication terminal, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot timeslot and a transmission resource in the uplink subframe, and the third transmission module is specifically configured to: respectively transmitting a first demodulation reference signal and a second demodulation reference signal to the network side through the transmission resources in the uplink pilot time slot and the transmission resources in the uplink subframe; the first demodulation reference signal and the second demodulation reference signal are used for joint channel estimation at the network side, and a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot is demodulated by using a channel estimation result.
In the above mobile communication terminal, when the uplink pilot time slot is separately scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink subframe.
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.
Claims (22)
1. A transmission processing method, used on a network side, comprising:
transmitting first indication information to a mobile communication terminal, indicating that a demodulation reference signal transmission resource is located in an uplink pilot time slot of a special subframe and/or an uplink subframe after the uplink pilot time slot, wherein when the uplink pilot time slot and the uplink subframe are jointly scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink pilot frequency time slot and the transmission resource in the uplink subframe; when the uplink pilot time slot is separately scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink subframe;
acquiring a demodulation reference signal transmitted by a mobile communication terminal through a demodulation reference signal transmission resource; the demodulation reference signal transmission resource is positioned in an uplink pilot frequency time slot of a special subframe and/or an uplink subframe behind the uplink pilot frequency time slot, or an uplink subframe behind the uplink pilot frequency time slot;
and demodulating a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by using the acquired demodulation reference signal.
2. The transmission processing method according to claim 1, further comprising:
when the first indication information indicates that the demodulation reference signal transmission resource comprises a transmission resource in the uplink pilot time slot, transmitting second indication information to the mobile communication terminal, indicating the position of the demodulation reference signal transmission resource in the uplink pilot time slot on a time domain;
in the time domain, the demodulation reference signal transmission resource located in the uplink pilot time slot is any one symbol in the uplink pilot time slot.
3. The transmission processing method according to claim 2, wherein the first indication information and the second indication information are transmitted to the mobile communication terminal by higher layer signaling and/or real-time control signaling.
4. The transmission processing method according to claim 1, wherein the demodulation reference signal transmission resource is determined according to a comparison result of a position determination parameter and a predetermined threshold, and at least includes the transmission resource in the uplink pilot time slot or only includes the transmission resource in the uplink subframe; the position determination parameter is a channel time-varying characteristic, a moving speed or a signal-to-noise ratio of the mobile communication terminal.
5. The transmission processing method according to claim 1, wherein the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot timeslot and a transmission resource in the uplink subframe, and the demodulating, by using the obtained demodulation reference signal, a traffic data channel transmitted by the mobile communication terminal through the uplink pilot timeslot specifically includes:
performing channel estimation by combining a first demodulation reference signal transmitted by transmission resources in the uplink pilot time slot and a second demodulation reference signal transmitted by the transmission resources in the uplink subframe;
and demodulating the service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by using the channel estimation result.
6. A transmission processing method for a mobile communication terminal, comprising:
receiving first indication information transmitted by a network side;
determining that a demodulation reference signal transmission resource is located in an uplink pilot time slot and/or an uplink subframe after the uplink pilot time slot according to the first indication information, wherein when the uplink pilot time slot and the uplink subframe are jointly scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink pilot frequency time slot and the transmission resource in the uplink subframe; when the uplink pilot time slot is separately scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink subframe;
determining a demodulation reference signal corresponding to a service data channel transmitted through an uplink pilot time slot;
transmitting the demodulation reference signal to a network side through a demodulation reference signal transmission resource, wherein the demodulation reference signal is used for demodulating a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by the network side; the demodulation reference signal transmission resource is positioned in an uplink pilot time slot of a special subframe and/or an uplink subframe after the uplink pilot time slot, or an uplink subframe after the uplink pilot time slot.
7. The transmission processing method according to claim 6, used for a mobile communication terminal, further comprising:
receiving first indication information transmitted by a network side;
and determining that the demodulation reference signal transmission resource is positioned in the uplink pilot time slot and/or an uplink subframe after the uplink pilot time slot according to the first indication information.
8. The transmission processing method according to claim 6, further comprising:
receiving second indication information transmitted by the network side when the first indication information indicates that the demodulation reference signal transmission resources comprise transmission resources in the uplink pilot time slot; determining the position of the demodulation reference signal transmission resource in the uplink pilot time slot on a time domain according to the second indication information;
or:
when the first indication information indicates that the demodulation reference signal transmission resource comprises a transmission resource in the uplink pilot time slot, determining the position of the demodulation reference signal transmission resource in the uplink pilot time slot on a time domain according to a predefined criterion; in the time domain, the demodulation reference signal transmission resource located in the uplink pilot time slot is any one symbol in the uplink pilot time slot.
9. The transmission processing method according to claim 8, wherein the first indication information and the second indication information are transmitted to the mobile communication terminal by higher layer signaling and/or real-time control signaling.
10. The transmission processing method according to claim 6, wherein it is determined whether the demodulation reference signal transmission resource at least includes the transmission resource in the uplink pilot timeslot or only includes the transmission resource in the uplink subframe according to a comparison result of a position determination parameter with a predetermined threshold, wherein the position determination parameter is a channel time varying characteristic, a moving speed or a signal-to-noise ratio of the mobile communication terminal.
11. The transmission processing method according to claim 6, wherein the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot timeslot and a transmission resource in the uplink subframe, and the transmitting the demodulation reference signal to the network side via the demodulation reference signal transmission resource specifically includes:
respectively transmitting a first demodulation reference signal and a second demodulation reference signal to the network side through the transmission resources in the uplink pilot time slot and the transmission resources in the uplink subframe; the first demodulation reference signal and the second demodulation reference signal are used for joint channel estimation at the network side, and a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot is demodulated by using a channel estimation result.
12. A network-side device, comprising:
a first transmission module, configured to transmit first indication information to a mobile communication terminal, indicating that a demodulation reference signal transmission resource is located in an uplink pilot time slot and/or an uplink subframe after the uplink pilot time slot, where when the uplink pilot time slot and the uplink subframe are jointly scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink pilot frequency time slot and the transmission resource in the uplink subframe; when the uplink pilot time slot is separately scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink subframe;
the signal acquisition module is used for acquiring a demodulation reference signal transmitted by the mobile communication terminal through a demodulation reference signal transmission resource; the demodulation reference signal transmission resource is positioned in an uplink pilot frequency time slot of a special subframe and/or an uplink subframe behind the uplink pilot frequency time slot, or an uplink subframe behind the uplink pilot frequency time slot;
and the demodulation module is used for demodulating a service data channel transmitted by the mobile communication terminal through the uplink pilot time slot by using the acquired demodulation reference signal.
13. The network-side device of claim 12, further comprising:
a first transmission module, configured to transmit first indication information to the mobile communication terminal, indicating that the demodulation reference signal transmission resource is located in the uplink pilot timeslot and/or an uplink subframe after the uplink pilot timeslot.
14. The network-side device of claim 13, further comprising:
a second transmission module, configured to transmit second indication information to the mobile communication terminal when the first indication information indicates that the demodulation reference signal transmission resource includes a transmission resource in the uplink pilot timeslot, indicating a position of the demodulation reference signal transmission resource located in the uplink pilot timeslot on a time domain;
in the time domain, the demodulation reference signal transmission resource located in the uplink pilot time slot is any one symbol in the uplink pilot time slot.
15. The network-side device of claim 14, wherein the first indication information and the second indication information are transmitted to the mobile communication terminal through higher layer signaling and/or real-time control signaling.
16. The network side device according to claim 13, wherein it is determined whether the demodulation reference signal transmission resource at least includes a transmission resource in the uplink pilot timeslot or only includes a transmission resource in the uplink subframe according to a comparison result between a location determination parameter and a predetermined threshold, where the location determination parameter is a channel time varying characteristic, a moving speed, or a signal-to-noise ratio of the mobile communication terminal.
17. The network-side device of claim 12, wherein the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot timeslot and a transmission resource in the uplink subframe, and the demodulation module specifically includes:
a channel estimation unit, configured to perform channel estimation by combining a first demodulation reference signal transmitted by a transmission resource in the uplink pilot timeslot and a second demodulation reference signal transmitted by a transmission resource in the uplink subframe;
and the demodulation unit is used for demodulating the service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot by using the channel estimation result.
18. A mobile communication terminal, comprising:
the first receiving module is used for receiving first indication information transmitted by a network side;
a second determining module, configured to determine, according to the first indication information, that the demodulation reference signal transmission resource is located in an uplink pilot timeslot and/or an uplink subframe after the uplink pilot timeslot; wherein, when the uplink pilot time slot and the uplink subframe are jointly scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as a transmission resource in the uplink pilot time slot and a transmission resource in the uplink subframe, when the uplink pilot time slot is separately scheduled, the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot time slot; or indicating the demodulation reference signal transmission resource as the transmission resource in the uplink subframe;
a first determining module, configured to determine a demodulation reference signal corresponding to a traffic data channel transmitted through an uplink pilot timeslot;
a third transmission module, configured to transmit the demodulation reference signal to a network side through a demodulation reference signal transmission resource, where the demodulation reference signal is used by the network side to demodulate a service data channel transmitted by the mobile communication terminal through the uplink pilot timeslot; the demodulation reference signal transmission resource is positioned in an uplink pilot time slot of a special subframe and/or an uplink subframe after the uplink pilot time slot, or an uplink subframe after the uplink pilot time slot.
19. The mobile communication terminal of claim 18, further comprising:
a second receiving module, configured to receive second indication information transmitted by the network side when the first indication information indicates that the demodulation reference signal transmission resource includes a transmission resource in the uplink pilot timeslot; a third determining module, configured to determine, according to the second indication information, a position of the demodulation reference signal transmission resource located in the uplink pilot timeslot on a time domain;
or:
a fourth determining module, configured to determine, according to a predefined criterion, a position of the demodulation reference signal transmission resource located in the uplink pilot timeslot in a time domain when the first indication information indicates that the demodulation reference signal transmission resource includes a transmission resource in the uplink pilot timeslot; in the time domain, the demodulation reference signal transmission resource located in the uplink pilot time slot is any one symbol in the uplink pilot time slot.
20. The mobile communication terminal according to claim 19, wherein the first indication information and the second indication information are transmitted to the mobile communication terminal by higher layer signaling and/or real-time control signaling.
21. The mobile communication terminal of claim 18, wherein the demodulation reference signal transmission resource is determined to at least include the transmission resource in the uplink pilot timeslot or only include the transmission resource in the uplink subframe according to a comparison result between a location determination parameter and a predetermined threshold, wherein the location determination parameter is a channel time varying characteristic, a moving speed or a signal-to-noise ratio of the mobile communication terminal.
22. The mobile communication terminal according to claim 18, wherein the first indication information indicates that the demodulation reference signal transmission resource is a transmission resource in the uplink pilot timeslot and a transmission resource in the uplink subframe, and the third transmission module is specifically configured to: respectively transmitting a first demodulation reference signal and a second demodulation reference signal to the network side through the transmission resources in the uplink pilot time slot and the transmission resources in the uplink subframe; the first demodulation reference signal and the second demodulation reference signal are used for joint channel estimation at the network side, and a service data channel transmitted by the mobile communication terminal through the uplink pilot frequency time slot is demodulated by using a channel estimation result.
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| CN102685890A (en) * | 2011-03-08 | 2012-09-19 | 中兴通讯股份有限公司 | Pilot frequency transmitting method and system |
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| CN104995979A (en) * | 2013-03-27 | 2015-10-21 | 夏普株式会社 | Terminal device, base station device, communication method, and integrated circuit |
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| CN101365232A (en) * | 2007-08-10 | 2009-02-11 | 中兴通讯股份有限公司 | Demodulation reference signal mode notifying method in long-term evolution system |
| CN102685890A (en) * | 2011-03-08 | 2012-09-19 | 中兴通讯股份有限公司 | Pilot frequency transmitting method and system |
| CN103944662A (en) * | 2013-01-18 | 2014-07-23 | 中兴通讯股份有限公司 | Method and system for transmitting uplink demodulation reference signal |
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