A mobile communication method, comprising: registering, by a user equipment, with access entities of at least two networks, wherein the access entities which accept the registration of the user equipment are associated with one another; characterized by further comprising: initiating, by the user equipment, a location update procedure with an access entity in one of the at least two networks, wherein the location update procedure is a tracking area update, TAU, procedure or a routing area update, RAU, procedure; wherein when the access entity in one of the at least two networks performs the location update for the user equipment, a paging to the user equipment in a paging area administered by an originally associated access entity in another network is prohibited if an area where the user equipment currently locates satisfies a predetermined condition; wherein the predetermined condition comprises one or more of the following: a distance between the area where the user equipment currently locates and the paging area administered by the originally associated access entity in the another network exceeds a predetermined threshold; or these two areas are not adjacent to each other; the access entity in the area where the user equipment currently locates cannot be associated with the originally associated access entity in the another network; or no association needs to be performed according to a configuration; the time that the user equipment stays in a current access system exceeds a threshold; the speed of the user equipment in a current access system is lower than a threshold. registering, by a user equipment, with access entities of at least two networks, wherein the access entities which accept the registration of the user equipment are associated with one another; characterized by further comprising: initiating, by the user equipment, a location update procedure with an access entity in one of the at least two networks, wherein the location update procedure is a tracking area update, TAU, procedure or a routing area update, RAU, procedure; wherein when the access entity in one of the at least two networks performs the location update for the user equipment, a paging to the user equipment in a paging area administered by an originally associated access entity in another network is prohibited if an area where the user equipment currently locates satisfies a predetermined condition; wherein the predetermined condition comprises one or more of the following: a distance between the area where the user equipment currently locates and the paging area administered by the originally associated access entity in the another network exceeds a predetermined threshold; or these two areas are not adjacent to each other; the access entity in the area where the user equipment currently locates cannot be associated with the originally associated access entity in the another network; or no association needs to be performed according to a configuration; the time that the user equipment stays in a current access system exceeds a threshold; the speed of the user equipment in a current access system is lower than a threshold. initiating, by the user equipment, a location update procedure with an access entity in one of the at least two networks, wherein the location update procedure is a tracking area update, TAU, procedure or a routing area update, RAU, procedure; wherein when the access entity in one of the at least two networks performs the location update for the user equipment, a paging to the user equipment in a paging area administered by an originally associated access entity in another network is prohibited if an area where the user equipment currently locates satisfies a predetermined condition; wherein the predetermined condition comprises one or more of the following: a distance between the area where the user equipment currently locates and the paging area administered by the originally associated access entity in the another network exceeds a predetermined threshold; or these two areas are not adjacent to each other; the access entity in the area where the user equipment currently locates cannot be associated with the originally associated access entity in the another network; or no association needs to be performed according to a configuration; the time that the user equipment stays in a current access system exceeds a threshold; the speed of the user equipment in a current access system is lower than a threshold. a distance between the area where the user equipment currently locates and the paging area administered by the originally associated access entity in the another network exceeds a predetermined threshold; or these two areas are not adjacent to each other; the access entity in the area where the user equipment currently locates cannot be associated with the originally associated access entity in the another network; or no association needs to be performed according to a configuration; the time that the user equipment stays in a current access system exceeds a threshold; the speed of the user equipment in a current access system is lower than a threshold.